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Adding in the android studio project

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This commit is contained in:
Lucas Oskorep
2019-04-14 18:58:34 -05:00
parent ef71399199
commit d3aac99da9
36 changed files with 2603 additions and 2 deletions
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android-tflite/app/build.gradle
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apply plugin: 'com.android.application'
project.ext.ASSET_DIR = projectDir.toString() + '/src/main/assets'
assert file(project.ext.ASSET_DIR + "/graph.lite").exists()
assert file(project.ext.ASSET_DIR + "/labels.txt").exists()
android {
compileSdkVersion 26
defaultConfig {
applicationId "android.example.com.tflitecamerademo"
minSdkVersion 21
targetSdkVersion 26
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
lintOptions {
abortOnError false
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
aaptOptions {
noCompress "tflite"
noCompress "lite"
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
}
repositories {
maven {
url 'https://google.bintray.com/tensorflow'
}
google()
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
implementation 'com.android.support:appcompat-v7:25.2.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.0'
implementation 'com.android.support:design:25.2.0'
implementation 'com.android.support:support-annotations:25.3.1'
implementation 'com.android.support:support-v13:25.2.0'
implementation 'org.tensorflow:tensorflow-lite:+'
testImplementation 'junit:junit:4.12'
}
android-tflite/app/src/main/AndroidManifest.xml
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<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright 2014 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.android.tflitecamerademo">
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<application android:allowBackup="true"
android:label="@string/app_name"
android:icon="@drawable/ic_launcher"
android:theme="@style/MaterialTheme">
<activity android:name="com.example.android.tflitecamerademo.CameraActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
android-tflite/app/src/main/assets/BUILD
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package(default_visibility = ["//visibility:private"])
licenses(["notice"]) # Apache 2.0
exports_files(
glob(
["**/*"],
exclude = [
"BUILD",
],
),
)
filegroup(
name = "all_files",
srcs = glob(
["**/*"],
exclude = [
"**/METADATA",
"**/OWNERS",
],
),
visibility = ["//tensorflow:__subpackages__"],
)
android-tflite/app/src/main/assets/graph.lite
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android-tflite/app/src/main/assets/labels.txt
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android-tflite/app/src/main/java/com/example/android/tflitecamerademo/AutoFitTextureView.java
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/* Copyright 2017 The TensorFlow Authors. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/
package com.example.android.tflitecamerademo;
import android.content.Context;
import android.util.AttributeSet;
import android.view.TextureView;
/** A {@link TextureView} that can be adjusted to a specified aspect ratio. */
public class AutoFitTextureView extends TextureView {
private int mRatioWidth = 0;
private int mRatioHeight = 0;
public AutoFitTextureView(Context context) {
this(context, null);
}
public AutoFitTextureView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public AutoFitTextureView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
/**
* Sets the aspect ratio for this view. The size of the view will be measured based on the ratio
* calculated from the parameters. Note that the actual sizes of parameters don't matter, that is,
* calling setAspectRatio(2, 3) and setAspectRatio(4, 6) make the same result.
*
* @param width Relative horizontal size
* @param height Relative vertical size
*/
public void setAspectRatio(int width, int height) {
if (width < 0 || height < 0) {
throw new IllegalArgumentException("Size cannot be negative.");
}
mRatioWidth = width;
mRatioHeight = height;
requestLayout();
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int width = MeasureSpec.getSize(widthMeasureSpec);
int height = MeasureSpec.getSize(heightMeasureSpec);
if (0 == mRatioWidth || 0 == mRatioHeight) {
setMeasuredDimension(width, height);
} else {
if (width < height * mRatioWidth / mRatioHeight) {
setMeasuredDimension(width, width * mRatioHeight / mRatioWidth);
} else {
setMeasuredDimension(height * mRatioWidth / mRatioHeight, height);
}
}
}
}
android-tflite/app/src/main/java/com/example/android/tflitecamerademo/Camera2BasicFragment.java
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/* Copyright 2017 The TensorFlow Authors. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/
package com.example.android.tflitecamerademo;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.app.Fragment;
import android.content.Context;
import android.content.DialogInterface;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.graphics.ImageFormat;
import android.graphics.Matrix;
import android.graphics.Point;
import android.graphics.RectF;
import android.graphics.SurfaceTexture;
import android.hardware.camera2.CameraAccessException;
import android.hardware.camera2.CameraCaptureSession;
import android.hardware.camera2.CameraCharacteristics;
import android.hardware.camera2.CameraDevice;
import android.hardware.camera2.CameraManager;
import android.hardware.camera2.CaptureRequest;
import android.hardware.camera2.CaptureResult;
import android.hardware.camera2.TotalCaptureResult;
import android.hardware.camera2.params.StreamConfigurationMap;
import android.media.ImageReader;
import android.os.Bundle;
import android.os.Handler;
import android.os.HandlerThread;
import android.support.annotation.NonNull;
import android.support.v13.app.FragmentCompat;
import android.support.v4.content.ContextCompat;
import android.util.Log;
import android.util.Size;
import android.view.LayoutInflater;
import android.view.Surface;
import android.view.TextureView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.concurrent.Semaphore;
import java.util.concurrent.TimeUnit;
/** Basic fragments for the Camera. */
public class Camera2BasicFragment extends Fragment
implements FragmentCompat.OnRequestPermissionsResultCallback {
/** Tag for the {@link Log}. */
private static final String TAG = "TfLiteCameraDemo";
private static final String FRAGMENT_DIALOG = "dialog";
private static final String HANDLE_THREAD_NAME = "CameraBackground";
private static final int PERMISSIONS_REQUEST_CODE = 1;
private final Object lock = new Object();
private boolean runClassifier = false;
private boolean checkedPermissions = false;
private TextView textView;
private ImageClassifier classifier;
/** Max preview width that is guaranteed by Camera2 API */
private static final int MAX_PREVIEW_WIDTH = 1920;
/** Max preview height that is guaranteed by Camera2 API */
private static final int MAX_PREVIEW_HEIGHT = 1080;
/**
* {@link TextureView.SurfaceTextureListener} handles several lifecycle events on a {@link
* TextureView}.
*/
private final TextureView.SurfaceTextureListener surfaceTextureListener =
new TextureView.SurfaceTextureListener() {
@Override
public void onSurfaceTextureAvailable(SurfaceTexture texture, int width, int height) {
openCamera(width, height);
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture texture, int width, int height) {
configureTransform(width, height);
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture texture) {
return true;
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture texture) {}
};
/** ID of the current {@link CameraDevice}. */
private String cameraId;
/** An {@link AutoFitTextureView} for camera preview. */
private AutoFitTextureView textureView;
/** A {@link CameraCaptureSession } for camera preview. */
private CameraCaptureSession captureSession;
/** A reference to the opened {@link CameraDevice}. */
private CameraDevice cameraDevice;
/** The {@link android.util.Size} of camera preview. */
private Size previewSize;
/** {@link CameraDevice.StateCallback} is called when {@link CameraDevice} changes its state. */
private final CameraDevice.StateCallback stateCallback =
new CameraDevice.StateCallback() {
@Override
public void onOpened(@NonNull CameraDevice currentCameraDevice) {
// This method is called when the camera is opened. We start camera preview here.
cameraOpenCloseLock.release();
cameraDevice = currentCameraDevice;
createCameraPreviewSession();
}
@Override
public void onDisconnected(@NonNull CameraDevice currentCameraDevice) {
cameraOpenCloseLock.release();
currentCameraDevice.close();
cameraDevice = null;
}
@Override
public void onError(@NonNull CameraDevice currentCameraDevice, int error) {
cameraOpenCloseLock.release();
currentCameraDevice.close();
cameraDevice = null;
Activity activity = getActivity();
if (null != activity) {
activity.finish();
}
}
};
/** An additional thread for running tasks that shouldn't block the UI. */
private HandlerThread backgroundThread;
/** A {@link Handler} for running tasks in the background. */
private Handler backgroundHandler;
/** An {@link ImageReader} that handles image capture. */
private ImageReader imageReader;
/** {@link CaptureRequest.Builder} for the camera preview */
private CaptureRequest.Builder previewRequestBuilder;
/** {@link CaptureRequest} generated by {@link #previewRequestBuilder} */
private CaptureRequest previewRequest;
/** A {@link Semaphore} to prevent the app from exiting before closing the camera. */
private Semaphore cameraOpenCloseLock = new Semaphore(1);
/** A {@link CameraCaptureSession.CaptureCallback} that handles events related to capture. */
private CameraCaptureSession.CaptureCallback captureCallback =
new CameraCaptureSession.CaptureCallback() {
@Override
public void onCaptureProgressed(
@NonNull CameraCaptureSession session,
@NonNull CaptureRequest request,
@NonNull CaptureResult partialResult) {}
@Override
public void onCaptureCompleted(
@NonNull CameraCaptureSession session,
@NonNull CaptureRequest request,
@NonNull TotalCaptureResult result) {}
};
/**
* Shows a {@link Toast} on the UI thread for the classification results.
*
* @param text The message to show
*/
private void showToast(final String text) {
final Activity activity = getActivity();
if (activity != null) {
activity.runOnUiThread(
new Runnable() {
@Override
public void run() {
textView.setText(text);
}
});
}
}
/**
* Resizes image.
*
* Attempting to use too large a preview size could exceed the camera bus' bandwidth limitation,
* resulting in gorgeous previews but the storage of garbage capture data.
*
* Given {@code choices} of {@code Size}s supported by a camera, choose the smallest one that is
* at least as large as the respective texture view size, and that is at most as large as the
* respective max size, and whose aspect ratio matches with the specified value. If such size
* doesn't exist, choose the largest one that is at most as large as the respective max size, and
* whose aspect ratio matches with the specified value.
*
* @param choices The list of sizes that the camera supports for the intended output class
* @param textureViewWidth The width of the texture view relative to sensor coordinate
* @param textureViewHeight The height of the texture view relative to sensor coordinate
* @param maxWidth The maximum width that can be chosen
* @param maxHeight The maximum height that can be chosen
* @param aspectRatio The aspect ratio
* @return The optimal {@code Size}, or an arbitrary one if none were big enough
*/
private static Size chooseOptimalSize(
Size[] choices,
int textureViewWidth,
int textureViewHeight,
int maxWidth,
int maxHeight,
Size aspectRatio) {
// Collect the supported resolutions that are at least as big as the preview Surface
List<Size> bigEnough = new ArrayList<>();
// Collect the supported resolutions that are smaller than the preview Surface
List<Size> notBigEnough = new ArrayList<>();
int w = aspectRatio.getWidth();
int h = aspectRatio.getHeight();
for (Size option : choices) {
if (option.getWidth() <= maxWidth
&& option.getHeight() <= maxHeight
&& option.getHeight() == option.getWidth() * h / w) {
if (option.getWidth() >= textureViewWidth && option.getHeight() >= textureViewHeight) {
bigEnough.add(option);
} else {
notBigEnough.add(option);
}
}
}
// Pick the smallest of those big enough. If there is no one big enough, pick the
// largest of those not big enough.
if (bigEnough.size() > 0) {
return Collections.min(bigEnough, new CompareSizesByArea());
} else if (notBigEnough.size() > 0) {
return Collections.max(notBigEnough, new CompareSizesByArea());
} else {
Log.e(TAG, "Couldn't find any suitable preview size");
return choices[0];
}
}
public static Camera2BasicFragment newInstance() {
return new Camera2BasicFragment();
}
/** Layout the preview and buttons. */
@Override
public View onCreateView(
LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_camera2_basic, container, false);
}
/** Connect the buttons to their event handler. */
@Override
public void onViewCreated(final View view, Bundle savedInstanceState) {
textureView = (AutoFitTextureView) view.findViewById(R.id.texture);
textView = (TextView) view.findViewById(R.id.text);
}
/** Load the model and labels. */
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
try {
classifier = new ImageClassifier(getActivity());
} catch (IOException e) {
Log.e(TAG, "Failed to initialize an image classifier.");
}
startBackgroundThread();
}
@Override
public void onResume() {
super.onResume();
startBackgroundThread();
// When the screen is turned off and turned back on, the SurfaceTexture is already
// available, and "onSurfaceTextureAvailable" will not be called. In that case, we can open
// a camera and start preview from here (otherwise, we wait until the surface is ready in
// the SurfaceTextureListener).
if (textureView.isAvailable()) {
openCamera(textureView.getWidth(), textureView.getHeight());
} else {
textureView.setSurfaceTextureListener(surfaceTextureListener);
}
}
@Override
public void onPause() {
closeCamera();
stopBackgroundThread();
super.onPause();
}
@Override
public void onDestroy() {
classifier.close();
super.onDestroy();
}
/**
* Sets up member variables related to camera.
*
* @param width The width of available size for camera preview
* @param height The height of available size for camera preview
*/
private void setUpCameraOutputs(int width, int height) {
Activity activity = getActivity();
CameraManager manager = (CameraManager) activity.getSystemService(Context.CAMERA_SERVICE);
try {
for (String cameraId : manager.getCameraIdList()) {
CameraCharacteristics characteristics = manager.getCameraCharacteristics(cameraId);
// We don't use a front facing camera in this sample.
Integer facing = characteristics.get(CameraCharacteristics.LENS_FACING);
if (facing != null && facing == CameraCharacteristics.LENS_FACING_FRONT) {
continue;
}
StreamConfigurationMap map =
characteristics.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
if (map == null) {
continue;
}
// // For still image captures, we use the largest available size.
Size largest =
Collections.max(
Arrays.asList(map.getOutputSizes(ImageFormat.JPEG)), new CompareSizesByArea());
imageReader =
ImageReader.newInstance(
largest.getWidth(), largest.getHeight(), ImageFormat.JPEG, /*maxImages*/ 2);
// Find out if we need to swap dimension to get the preview size relative to sensor
// coordinate.
int displayRotation = activity.getWindowManager().getDefaultDisplay().getRotation();
// noinspection ConstantConditions
/* Orientation of the camera sensor */
int sensorOrientation = characteristics.get(CameraCharacteristics.SENSOR_ORIENTATION);
boolean swappedDimensions = false;
switch (displayRotation) {
case Surface.ROTATION_0:
case Surface.ROTATION_180:
if (sensorOrientation == 90 || sensorOrientation == 270) {
swappedDimensions = true;
}
break;
case Surface.ROTATION_90:
case Surface.ROTATION_270:
if (sensorOrientation == 0 || sensorOrientation == 180) {
swappedDimensions = true;
}
break;
default:
Log.e(TAG, "Display rotation is invalid: " + displayRotation);
}
Point displaySize = new Point();
activity.getWindowManager().getDefaultDisplay().getSize(displaySize);
int rotatedPreviewWidth = width;
int rotatedPreviewHeight = height;
int maxPreviewWidth = displaySize.x;
int maxPreviewHeight = displaySize.y;
if (swappedDimensions) {
rotatedPreviewWidth = height;
rotatedPreviewHeight = width;
maxPreviewWidth = displaySize.y;
maxPreviewHeight = displaySize.x;
}
if (maxPreviewWidth > MAX_PREVIEW_WIDTH) {
maxPreviewWidth = MAX_PREVIEW_WIDTH;
}
if (maxPreviewHeight > MAX_PREVIEW_HEIGHT) {
maxPreviewHeight = MAX_PREVIEW_HEIGHT;
}
previewSize =
chooseOptimalSize(
map.getOutputSizes(SurfaceTexture.class),
rotatedPreviewWidth,
rotatedPreviewHeight,
maxPreviewWidth,
maxPreviewHeight,
largest);
// We fit the aspect ratio of TextureView to the size of preview we picked.
int orientation = getResources().getConfiguration().orientation;
if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
textureView.setAspectRatio(previewSize.getWidth(), previewSize.getHeight());
} else {
textureView.setAspectRatio(previewSize.getHeight(), previewSize.getWidth());
}
this.cameraId = cameraId;
return;
}
} catch (CameraAccessException e) {
e.printStackTrace();
} catch (NullPointerException e) {
// Currently an NPE is thrown when the Camera2API is used but not supported on the
// device this code runs.
ErrorDialog.newInstance(getString(R.string.camera_error))
.show(getChildFragmentManager(), FRAGMENT_DIALOG);
}
}
private String[] getRequiredPermissions() {
Activity activity = getActivity();
try {
PackageInfo info =
activity
.getPackageManager()
.getPackageInfo(activity.getPackageName(), PackageManager.GET_PERMISSIONS);
String[] ps = info.requestedPermissions;
if (ps != null && ps.length > 0) {
return ps;
} else {
return new String[0];
}
} catch (Exception e) {
return new String[0];
}
}
/** Opens the camera specified by {@link Camera2BasicFragment#cameraId}. */
private void openCamera(int width, int height) {
if (!checkedPermissions && !allPermissionsGranted()) {
FragmentCompat.requestPermissions(this, getRequiredPermissions(), PERMISSIONS_REQUEST_CODE);
return;
} else {
checkedPermissions = true;
}
setUpCameraOutputs(width, height);
configureTransform(width, height);
Activity activity = getActivity();
CameraManager manager = (CameraManager) activity.getSystemService(Context.CAMERA_SERVICE);
try {
if (!cameraOpenCloseLock.tryAcquire(2500, TimeUnit.MILLISECONDS)) {
throw new RuntimeException("Time out waiting to lock camera opening.");
}
manager.openCamera(cameraId, stateCallback, backgroundHandler);
} catch (CameraAccessException e) {
e.printStackTrace();
} catch (InterruptedException e) {
throw new RuntimeException("Interrupted while trying to lock camera opening.", e);
}
}
private boolean allPermissionsGranted() {
for (String permission : getRequiredPermissions()) {
if (ContextCompat.checkSelfPermission(getActivity(), permission)
!= PackageManager.PERMISSION_GRANTED) {
return false;
}
}
return true;
}
@Override
public void onRequestPermissionsResult(
int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
/** Closes the current {@link CameraDevice}. */
private void closeCamera() {
try {
cameraOpenCloseLock.acquire();
if (null != captureSession) {
captureSession.close();
captureSession = null;
}
if (null != cameraDevice) {
cameraDevice.close();
cameraDevice = null;
}
if (null != imageReader) {
imageReader.close();
imageReader = null;
}
} catch (InterruptedException e) {
throw new RuntimeException("Interrupted while trying to lock camera closing.", e);
} finally {
cameraOpenCloseLock.release();
}
}
/** Starts a background thread and its {@link Handler}. */
private void startBackgroundThread() {
backgroundThread = new HandlerThread(HANDLE_THREAD_NAME);
backgroundThread.start();
backgroundHandler = new Handler(backgroundThread.getLooper());
synchronized (lock) {
runClassifier = true;
}
backgroundHandler.post(periodicClassify);
}
/** Stops the background thread and its {@link Handler}. */
private void stopBackgroundThread() {
backgroundThread.quitSafely();
try {
backgroundThread.join();
backgroundThread = null;
backgroundHandler = null;
synchronized (lock) {
runClassifier = false;
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}
/** Takes photos and classify them periodically. */
private Runnable periodicClassify =
new Runnable() {
@Override
public void run() {
synchronized (lock) {
if (runClassifier) {
classifyFrame();
}
}
backgroundHandler.post(periodicClassify);
}
};
/** Creates a new {@link CameraCaptureSession} for camera preview. */
private void createCameraPreviewSession() {
try {
SurfaceTexture texture = textureView.getSurfaceTexture();
assert texture != null;
// We configure the size of default buffer to be the size of camera preview we want.
texture.setDefaultBufferSize(previewSize.getWidth(), previewSize.getHeight());
// This is the output Surface we need to start preview.
Surface surface = new Surface(texture);
// We set up a CaptureRequest.Builder with the output Surface.
previewRequestBuilder = cameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
previewRequestBuilder.addTarget(surface);
// Here, we create a CameraCaptureSession for camera preview.
cameraDevice.createCaptureSession(
Arrays.asList(surface),
new CameraCaptureSession.StateCallback() {
@Override
public void onConfigured(@NonNull CameraCaptureSession cameraCaptureSession) {
// The camera is already closed
if (null == cameraDevice) {
return;
}
// When the session is ready, we start displaying the preview.
captureSession = cameraCaptureSession;
try {
// Auto focus should be continuous for camera preview.
previewRequestBuilder.set(
CaptureRequest.CONTROL_AF_MODE,
CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE);
// Finally, we start displaying the camera preview.
previewRequest = previewRequestBuilder.build();
captureSession.setRepeatingRequest(
previewRequest, captureCallback, backgroundHandler);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
@Override
public void onConfigureFailed(@NonNull CameraCaptureSession cameraCaptureSession) {
showToast("Failed");
}
},
null);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
/**
* Configures the necessary {@link android.graphics.Matrix} transformation to `textureView`. This
* method should be called after the camera preview size is determined in setUpCameraOutputs and
* also the size of `textureView` is fixed.
*
* @param viewWidth The width of `textureView`
* @param viewHeight The height of `textureView`
*/
private void configureTransform(int viewWidth, int viewHeight) {
Activity activity = getActivity();
if (null == textureView || null == previewSize || null == activity) {
return;
}
int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, previewSize.getHeight(), previewSize.getWidth());
float centerX = viewRect.centerX();
float centerY = viewRect.centerY();
if (Surface.ROTATION_90 == rotation || Surface.ROTATION_270 == rotation) {
bufferRect.offset(centerX - bufferRect.centerX(), centerY - bufferRect.centerY());
matrix.setRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.FILL);
float scale =
Math.max(
(float) viewHeight / previewSize.getHeight(),
(float) viewWidth / previewSize.getWidth());
matrix.postScale(scale, scale, centerX, centerY);
matrix.postRotate(90 * (rotation - 2), centerX, centerY);
} else if (Surface.ROTATION_180 == rotation) {
matrix.postRotate(180, centerX, centerY);
}
textureView.setTransform(matrix);
}
/** Classifies a frame from the preview stream. */
private void classifyFrame() {
if (classifier == null || getActivity() == null || cameraDevice == null) {
showToast("Uninitialized Classifier or invalid context.");
return;
}
Bitmap bitmap =
textureView.getBitmap(ImageClassifier.DIM_IMG_SIZE_X, ImageClassifier.DIM_IMG_SIZE_Y);
String textToShow = classifier.classifyFrame(bitmap);
bitmap.recycle();
showToast(textToShow);
}
/** Compares two {@code Size}s based on their areas. */
private static class CompareSizesByArea implements Comparator<Size> {
@Override
public int compare(Size lhs, Size rhs) {
// We cast here to ensure the multiplications won't overflow
return Long.signum(
(long) lhs.getWidth() * lhs.getHeight() - (long) rhs.getWidth() * rhs.getHeight());
}
}
/** Shows an error message dialog. */
public static class ErrorDialog extends DialogFragment {
private static final String ARG_MESSAGE = "message";
public static ErrorDialog newInstance(String message) {
ErrorDialog dialog = new ErrorDialog();
Bundle args = new Bundle();
args.putString(ARG_MESSAGE, message);
dialog.setArguments(args);
return dialog;
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
final Activity activity = getActivity();
return new AlertDialog.Builder(activity)
.setMessage(getArguments().getString(ARG_MESSAGE))
.setPositiveButton(
android.R.string.ok,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
activity.finish();
}
})
.create();
}
}
}
android-tflite/app/src/main/java/com/example/android/tflitecamerademo/CameraActivity.java
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/* Copyright 2017 The TensorFlow Authors. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/
package com.example.android.tflitecamerademo;
import android.app.Activity;
import android.os.Bundle;
/** Main {@code Activity} class for the Camera app. */
public class CameraActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_camera);
if (null == savedInstanceState) {
getFragmentManager()
.beginTransaction()
.replace(R.id.container, Camera2BasicFragment.newInstance())
.commit();
}
}
}
android-tflite/app/src/main/java/com/example/android/tflitecamerademo/ImageClassifier.java
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/* Copyright 2017 The TensorFlow Authors. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/
package com.example.android.tflitecamerademo;
import android.app.Activity;
import android.content.res.AssetFileDescriptor;
import android.graphics.Bitmap;
import android.os.SystemClock;
import android.util.Log;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import java.util.AbstractMap;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.Map;
import java.util.PriorityQueue;
import org.tensorflow.lite.Interpreter;
/** Classifies images with Tensorflow Lite. */
public class ImageClassifier {
/** Tag for the {@link Log}. */
private static final String TAG = "TfLiteCameraDemo";
/** Name of the model file stored in Assets. */
private static final String MODEL_PATH = "graph.lite";
/** Name of the label file stored in Assets. */
private static final String LABEL_PATH = "labels.txt";
/** Number of results to show in the UI. */
private static final int RESULTS_TO_SHOW = 3;
/** Dimensions of inputs. */
private static final int DIM_BATCH_SIZE = 1;
private static final int DIM_PIXEL_SIZE = 3;
static final int DIM_IMG_SIZE_X = 224;
static final int DIM_IMG_SIZE_Y = 224;
private static final int IMAGE_MEAN = 128;
private static final float IMAGE_STD = 128.0f;
/* Preallocated buffers for storing image data in. */
private int[] intValues = new int[DIM_IMG_SIZE_X * DIM_IMG_SIZE_Y];
/** An instance of the driver class to run model inference with Tensorflow Lite. */
private Interpreter tflite;
/** Labels corresponding to the output of the vision model. */
private List<String> labelList;
/** A ByteBuffer to hold image data, to be feed into Tensorflow Lite as inputs. */
private ByteBuffer imgData = null;
/** An array to hold inference results, to be feed into Tensorflow Lite as outputs. */
private float[][] labelProbArray = null;
/** multi-stage low pass filter **/
private float[][] filterLabelProbArray = null;
private static final int FILTER_STAGES = 3;
private static final float FILTER_FACTOR = 0.4f;
private PriorityQueue<Map.Entry<String, Float>> sortedLabels =
new PriorityQueue<>(
RESULTS_TO_SHOW,
new Comparator<Map.Entry<String, Float>>() {
@Override
public int compare(Map.Entry<String, Float> o1, Map.Entry<String, Float> o2) {
return (o1.getValue()).compareTo(o2.getValue());
}
});
/** Initializes an {@code ImageClassifier}. */
ImageClassifier(Activity activity) throws IOException {
tflite = new Interpreter(loadModelFile(activity));
labelList = loadLabelList(activity);
imgData =
ByteBuffer.allocateDirect(
4 * DIM_BATCH_SIZE * DIM_IMG_SIZE_X * DIM_IMG_SIZE_Y * DIM_PIXEL_SIZE);
imgData.order(ByteOrder.nativeOrder());
labelProbArray = new float[1][labelList.size()];
filterLabelProbArray = new float[FILTER_STAGES][labelList.size()];
Log.d(TAG, "Created a Tensorflow Lite Image Classifier.");
}
/** Classifies a frame from the preview stream. */
String classifyFrame(Bitmap bitmap) {
if (tflite == null) {
Log.e(TAG, "Image classifier has not been initialized; Skipped.");
return "Uninitialized Classifier.";
}
convertBitmapToByteBuffer(bitmap);
// Here's where the magic happens!!!
long startTime = SystemClock.uptimeMillis();
tflite.run(imgData, labelProbArray);
long endTime = SystemClock.uptimeMillis();
Log.d(TAG, "Timecost to run model inference: " + Long.toString(endTime - startTime));
// smooth the results
applyFilter();
// print the results
String textToShow = printTopKLabels();
textToShow = Long.toString(endTime - startTime) + "ms" + textToShow;
return textToShow;
}
void applyFilter(){
int num_labels = labelList.size();
// Low pass filter `labelProbArray` into the first stage of the filter.
for(int j=0; j<num_labels; ++j){
filterLabelProbArray[0][j] += FILTER_FACTOR*(labelProbArray[0][j] -
filterLabelProbArray[0][j]);
}
// Low pass filter each stage into the next.
for (int i=1; i<FILTER_STAGES; ++i){
for(int j=0; j<num_labels; ++j){
filterLabelProbArray[i][j] += FILTER_FACTOR*(
filterLabelProbArray[i-1][j] -
filterLabelProbArray[i][j]);
}
}
// Copy the last stage filter output back to `labelProbArray`.
for(int j=0; j<num_labels; ++j){
labelProbArray[0][j] = filterLabelProbArray[FILTER_STAGES-1][j];
}
}
/** Closes tflite to release resources. */
public void close() {
tflite.close();
tflite = null;
}
/** Reads label list from Assets. */
private List<String> loadLabelList(Activity activity) throws IOException {
List<String> labelList = new ArrayList<String>();
BufferedReader reader =
new BufferedReader(new InputStreamReader(activity.getAssets().open(LABEL_PATH)));
String line;
while ((line = reader.readLine()) != null) {
labelList.add(line);
}
reader.close();
return labelList;
}
/** Memory-map the model file in Assets. */
private MappedByteBuffer loadModelFile(Activity activity) throws IOException {
AssetFileDescriptor fileDescriptor = activity.getAssets().openFd(MODEL_PATH);
FileInputStream inputStream = new FileInputStream(fileDescriptor.getFileDescriptor());
FileChannel fileChannel = inputStream.getChannel();
long startOffset = fileDescriptor.getStartOffset();
long declaredLength = fileDescriptor.getDeclaredLength();
return fileChannel.map(FileChannel.MapMode.READ_ONLY, startOffset, declaredLength);
}
/** Writes Image data into a {@code ByteBuffer}. */
private void convertBitmapToByteBuffer(Bitmap bitmap) {
if (imgData == null) {
return;
}
imgData.rewind();
bitmap.getPixels(intValues, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.getHeight());
// Convert the image to floating point.
int pixel = 0;
long startTime = SystemClock.uptimeMillis();
for (int i = 0; i < DIM_IMG_SIZE_X; ++i) {
for (int j = 0; j < DIM_IMG_SIZE_Y; ++j) {
final int val = intValues[pixel++];
imgData.putFloat((((val >> 16) & 0xFF)-IMAGE_MEAN)/IMAGE_STD);
imgData.putFloat((((val >> 8) & 0xFF)-IMAGE_MEAN)/IMAGE_STD);
imgData.putFloat((((val) & 0xFF)-IMAGE_MEAN)/IMAGE_STD);
}
}
long endTime = SystemClock.uptimeMillis();
Log.d(TAG, "Timecost to put values into ByteBuffer: " + Long.toString(endTime - startTime));
}
/** Prints top-K labels, to be shown in UI as the results. */
private String printTopKLabels() {
for (int i = 0; i < labelList.size(); ++i) {
sortedLabels.add(
new AbstractMap.SimpleEntry<>(labelList.get(i), labelProbArray[0][i]));
if (sortedLabels.size() > RESULTS_TO_SHOW) {
sortedLabels.poll();
}
}
String textToShow = "";
final int size = sortedLabels.size();
for (int i = 0; i < size; ++i) {
Map.Entry<String, Float> label = sortedLabels.poll();
textToShow = String.format("\n%s: %4.2f",label.getKey(),label.getValue()) + textToShow;
}
return textToShow;
}
}
android-tflite/app/src/main/res/drawable-hdpi/ic_action_info.png
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android-tflite/app/src/main/res/layout-land/fragment_camera2_basic.xml
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<?xml version="1.0" encoding="utf-8"?><!--
Copyright 2014 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.example.android.tflitecamerademo.AutoFitTextureView
android:id="@+id/texture"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true" />
<FrameLayout
android:id="@+id/control"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:layout_alignParentTop="true"
android:layout_toRightOf="@id/texture"
android:background="@color/control_background"
android:orientation="horizontal">
<TextView android:id="@+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingTop="20dp"
android:textColor="#FFF"
android:textSize="20sp"
android:textStyle="bold" />
</FrameLayout>
</RelativeLayout>
android-tflite/app/src/main/res/layout/activity_camera.xml
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<?xml version="1.0" encoding="utf-8"?><!--
Copyright 2014 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#000"
tools:context="com.example.android.tflitecamerademo.CameraActivity" />
android-tflite/app/src/main/res/layout/fragment_camera2_basic.xml
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<?xml version="1.0" encoding="utf-8"?><!--
Copyright 2014 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.example.android.tflitecamerademo.AutoFitTextureView
android:id="@+id/texture"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true" />
<FrameLayout
android:id="@+id/control"
android:layout_width="match_parent"
android:layout_height="112dp"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:background="@color/control_background">
<TextView android:id="@+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="80dp"
android:textColor="#FFF"
android:textSize="20sp"
android:textStyle="bold" />
</FrameLayout>
</RelativeLayout>
android-tflite/app/src/main/res/values-sw600dp/template-dimens.xml
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<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<!-- Semantic definitions -->
<dimen name="horizontal_page_margin">@dimen/margin_huge</dimen>
<dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
</resources>
android-tflite/app/src/main/res/values-sw600dp/template-styles.xml
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<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<style name="Widget.SampleMessage">
<item name="android:textAppearance">?android:textAppearanceLarge</item>
<item name="android:lineSpacingMultiplier">1.2</item>
<item name="android:shadowDy">-6.5</item>
</style>
</resources>
android-tflite/app/src/main/res/values-v11/template-styles.xml
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<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<!-- Activity themes -->
<style name="Theme.Base" parent="android:Theme.Holo.Light" />
</resources>
android-tflite/app/src/main/res/values-v21/base-colors.xml
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<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
</resources>
android-tflite/app/src/main/res/values-v21/base-template-styles.xml
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<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<!-- Activity themes -->
<style name="Theme.Base" parent="android:Theme.Material.Light">
</style>
</resources>
android-tflite/app/src/main/res/values/base-strings.xml
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<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<string name="app_name">TensorDex</string>
<string name="intro_message">
<![CDATA[
This sample demonstrates the basic use of TfLite API. Check the source code to see how
you can use TfLite for efficient, on-device inference with trained TensorFlow models.
]]>
</string>
</resources>
android-tflite/app/src/main/res/values/colors.xml
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<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2015 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<color name="control_background">#cc4285f4</color>
</resources>
android-tflite/app/src/main/res/values/strings.xml
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<?xml version="1.0" encoding="utf-8"?><!--
Copyright 2014 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<string name="picture">Picture</string>
<string name="description_info">Info</string>
<string name="request_permission">This sample needs camera permission.</string>
<string name="camera_error">This device doesn\'t support Camera2 API.</string>
<string name="toggle_turn_on">NN:On</string>
<string name="toggle_turn_off">NN:Off</string>
<string name="toggle">Use NNAPI</string>
</resources>
android-tflite/app/src/main/res/values/styles.xml
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<?xml version="1.0" encoding="utf-8"?><!--
Copyright 2014 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<style name="MaterialTheme" parent="android:Theme.Material.Light.NoActionBar.Fullscreen" />
</resources>
android-tflite/app/src/main/res/values/template-dimens.xml
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<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<!-- Define standard dimensions to comply with Holo-style grids and rhythm. -->
<dimen name="margin_tiny">4dp</dimen>
<dimen name="margin_small">8dp</dimen>
<dimen name="margin_medium">16dp</dimen>
<dimen name="margin_large">32dp</dimen>
<dimen name="margin_huge">64dp</dimen>
<!-- Semantic definitions -->
<dimen name="horizontal_page_margin">@dimen/margin_medium</dimen>
<dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
</resources>
android-tflite/app/src/main/res/values/template-styles.xml
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<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<!-- Activity themes -->
<style name="Theme.Base" parent="android:Theme.Light" />
<style name="Theme.Sample" parent="Theme.Base" />
<style name="AppTheme" parent="Theme.Sample" />
<!-- Widget styling -->
<style name="Widget" />
<style name="Widget.SampleMessage">
<item name="android:textAppearance">?android:textAppearanceMedium</item>
<item name="android:lineSpacingMultiplier">1.1</item>
</style>
<style name="Widget.SampleMessageTile">
<item name="android:background">@drawable/tile</item>
<item name="android:shadowColor">#7F000000</item>
<item name="android:shadowDy">-3.5</item>
<item name="android:shadowRadius">2</item>
</style>
</resources>