android不知不觉偷拍他人功能实现（手机关闭依然拍照）

private static int number = 0;
private static boolean clearVoice = false;
private Intent intent;

private InitTimetoTakePic(Context context) {
this.mContext = context;
}

public synchronized static InitTimetoTakePic getInstance(Context context) {
mInstance = null;
mInstance = new InitTimetoTakePic(context);

return mInstance;
}

public void initView(FrameLayout surfaceViewFrame) {
mSurfaceViewFrame = surfaceViewFrame;
}

/**
* 启动定时拍照并上传功能
*/
Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case 1:
LogUtils.v("开始拍照");
initCarema();
break;
case 2:
if (mCamera == null) {
releaseCarema();
number = 0;
mHandler.removeCallbacksAndMessages(null);
} else {
if (number < Integer.valueOf(cameraStop)) {
mCamera.autoFocus(new AutoFocusCallback() {
@Override
public void onAutoFocus(boolean success, Camera camera) {
// 从Camera捕获图片
LogUtils.v("自动聚焦111" + success);
try {
mCamera.takePicture(null, null, mPicture);
mHandler.sendEmptyMessageDelayed(1, Integer.valueOf(cameraNumber) * 1000);
} catch (Exception e) {
releaseCarema();
mHandler.removeCallbacksAndMessages(null);
}
}
});
} else {
releaseCarema();
number = 0;
mHandler.removeCallbacksAndMessages(null);
}
}
break;
}
}
};

public void start() {
mHandler.sendEmptyMessageDelayed(1, 1 * 1000); //7s 后开始启动相机
}

private void initCarema() {
LogUtils.v("initCarema");
if (mCamera == null) {
LogUtils.v("camera=null");
mCamera = getCameraInstance();
mPreview = new CameraPreview(mContext, mCamera);
mSurfaceViewFrame.removeAllViews();
mSurfaceViewFrame.addView(mPreview);
}
LogUtils.v(mCamera == null ? "mCamera is null" : "mCamera is not null");
mCamera.startPreview();
mHandler.sendEmptyMessageDelayed(2, Integer.valueOf(cameraStart) * 1000); //3s后拍照
}

/**
* 检测设备是否存在Camera硬件
*/
private boolean checkCameraHardware(Context context) {
if (context.getPackageManager().hasSystemFeature(
PackageManager.FEATURE_CAMERA)) {
// 存在
return true;
} else {
// 不存在
return false;
}
}

/**
* 打开一个Camera
*/
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
public static Camera getCameraInstance() {
Camera c = null;
try {
c = Camera.open(cameraType);
c.setDisplayOrientation(90);
Camera.Parameters mParameters = c.getParameters();
//快门声音
c.enableShutterSound(clearVoice);
//可以用得到当前所支持的照片大小，然后
//List<Size> ms = mParameters.getSupportedPictureSizes();
//mParameters.setPictureSize(ms.get(0).width, ms.get(0).height);  //默认最大拍照取最大清晰度的照片
String[] xes = resolutionString.split("x");
// LogUtils.i("ms.get(0).width==>"+ms.get(0).width);
// LogUtils.i("ms.get(0).height==>"+ms.get(0).height);
// LogUtils.i("Integer.valueOf(xes[0])==>"+Integer.valueOf(xes[0]));
// LogUtils.i("Integer.valueOf(xes[1])==>"+Integer.valueOf(xes[1]));
mParameters.setPictureSize(Integer.valueOf(xes[0]), Integer.valueOf(xes[1]));  //默认最大拍照取最大清晰度的照片
c.setParameters(mParameters);
} catch (Exception e) {
LogUtils.v("打开Camera失败失败");
}
return c;
}

private PictureCallback mPicture = new PictureCallback() {

@Override
public void onPictureTaken(byte[] data, Camera camera) {
// 获取Jpeg图片，并保存在sd卡上
String path = saveLocation;
File dirF = new File(path);
if (!dirF.exists()) {
dirF.mkdirs();
}
File pictureFile = new File(path + "/" + System.currentTimeMillis() + "." + extension);//扩展名
try {
FileOutputStream fos = new FileOutputStream(pictureFile);
fos.write(data);
fos.close();

LogUtils.v("保存图成功");
number++;
intent = new Intent();
intent.setAction("CameraFragment.start");
intent.putExtra("number", number);
mContext.sendBroadcast(intent);
} catch (Exception e) {
LogUtils.v("保存图片失败");
e.printStackTrace();
}
releaseCarema();
}
};

public void releaseCarema() {
if (mCamera != null) {
mCamera.stopPreview();
mCamera.release();
mCamera = null;
}
}
}

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.ddv.www.candidphotodemo">
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
<uses-permission android:name="android.permission.GET_TASKS" />

<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />

<uses-permission android:name="android.permission.CAMERA"></uses-permission>
<uses-permission android:name="android.permission.RECORD_AUDIO"></uses-permission>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name=".PhotoWindowService" />
</application>

</manifest>