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Android 如何实现偷拍功能（手机关闭依然拍照）的教程
时间：2016-12-16 编辑：简简单单 来源：一聚教程网
Android 偷拍功能/手机关闭能拍照
效果如下：
其实偷拍与偷录实现方式是一样的，都是使用到的WindowManager来绘制桌面小控件的原理。那我就不多说了…
一、首先我们需要一个SurfaceView：
|
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/small_window_layout"
android:layout_width="1dip"
android:layout_height="1dip"
>
android:id="@+id/percent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
/>
|
二、然后进行的操作就是生产这个小控件了：
|
publicPhotoWindowSmallView(Context context) {
super(context);
windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
LayoutInflater.from(context).inflate(R.layout.float_window_small,this);
View view = findViewById(R.id.small_window_layout);
viewWidth = view.getLayoutParams().width;
viewHeight = view.getLayoutParams().height;
// SurfaceView percentView = (SurfaceView) findViewById(R.id.percent);
// percentView.setText(MyWindowManager.getUsedPercentValue(context));
}
/**
* 将小悬浮窗的参数传入，用于更新小悬浮窗的位置。
*
* @param params 小悬浮窗的参数
*/
publicvoidsetParams(WindowManager.LayoutParams params) {
mParams = params;
}
|
三、那桌面控件有了，下面当然就是使用WindowManager添加到桌面上了：
|
/**
* 创建一个小悬浮窗。初始位置为屏幕的右部中间位置。
*
* @param context 必须为应用程序的Context.
*/
publicvoidcreateSmallWindow(Context context) {
mContext = context;
WindowManager windowManager = getWindowManager(context);
intscreenWidth = windowManager.getDefaultDisplay().getWidth();
intscreenHeight = windowManager.getDefaultDisplay().getHeight();
if(smallWindow ==null) {
smallWindow =newPhotoWindowSmallView(context);
if(smallWindowParams ==null) {
smallWindowParams =newLayoutParams();
smallWindowParams.type = LayoutParams.TYPE_PHONE;
smallWindowParams.format = PixelFormat.RGBA_8888;
smallWindowParams.flags = LayoutParams.FLAG_NOT_TOUCH_MODAL
| LayoutParams.FLAG_NOT_FOCUSABLE;
smallWindowParams.gravity = Gravity.LEFT | Gravity.TOP;
smallWindowParams.width = PhotoWindowSmallView.viewWidth;
smallWindowParams.height = PhotoWindowSmallView.viewHeight;
smallWindowParams.x = screenWidth;
smallWindowParams.y = screenHeight /2;
}
smallWindow.setParams(smallWindowParams);
windowManager.addView(smallWindow, smallWindowParams);
mSurfaceview = (FrameLayout) smallWindow.findViewById(R.id.percent);
}
}
/**
* 将小悬浮窗从屏幕上移除。
*
* @param context 必须为应用程序的Context.
*/
publicvoidremoveSmallWindow(Context context) {
if(smallWindow !=null) {
WindowManager windowManager = getWindowManager(context);
windowManager.removeView(smallWindow);
smallWindow =null;
}
}
|
四、这个时候我们需要的SurfaceView就有了，那么，怎么在后台进行操作呢？自然而然就想到了Service了
在Service中执行桌面控件的操作：
|
@Override
publicintonStartCommand(Intent intent,intflags,intstartId) {
myWindowManager =newMyPhotoWindowManager();
createWindow();
returnsuper.onStartCommand(intent, flags, startId);
}
@Override
publicvoidonDestroy() {
super.onDestroy();
}
privatevoidcreateWindow() {
// 当前界面是桌面，且没有悬浮窗显示，则创建悬浮窗。
myWindowManager.removeSmallWindow(getApplicationContext());
myWindowManager.createSmallWindow(getApplicationContext());
}
|
五、在activity中对Service绑定，进行拍照的操作
|
privateclassMyServiceConnimplementsServiceConnection {
@Override
publicvoidonServiceConnected(ComponentName name, IBinder service) {
// TODO Auto-generated method stub
binder = (PhotoWindowService.myServiceBinder) service;
if(isVedio) {
binder.startCarema();
}else{
binder.stopCarema();
}
}
@Override
publicvoidonServiceDisconnected(ComponentName name) {
// TODO Auto-generated method stub
}
}
|
六、在Service中控制myWindowManager中的拍照的开始和结束
|
publicclassmyServiceBinderextendsBinder {
publicvoidstartCarema() {
myWindowManager.startCarema();
}
publicvoidstopCarema() {
myWindowManager.stopCarema();
}
}
|
七、在MyPhotoWindowManager开启或终止拍照操作
|
publicvoidstartCarema() {
itt = InitTimetoTakePic.getInstance(mContext);
itt.initView(mSurfaceview);
itt.start();
}
publicvoidstopCarema() {
if(itt !=null)
itt.releaseCarema();
}
|
八、在InitTimetoTakePic进行拍照的相关处理
|
packagecom.ddv.www.candidphotodemo;
importandroid.annotation.TargetApi;
importandroid.app.Activity;
importandroid.content.Context;
importandroid.content.Intent;
importandroid.content.pm.PackageManager;
importandroid.hardware.Camera;
importandroid.hardware.Camera.AutoFocusCallback;
importandroid.hardware.Camera.PictureCallback;
importandroid.os.Build;
importandroid.os.Handler;
importandroid.os.Message;
importandroid.widget.FrameLayout;
importjava.io.File;
importjava.io.FileOutputStream;
/**
* 设置定时拍照功能
*
* @author
* 创建定时拍照任务
* cameraType 摄像头
* resolutionString 分辨率
* tvSaveLocation 保存地址
* etExtension 拓展名
* cameraStart, 开始拍摄时间
* cameraNumber, 拍摄次数
* cameraStop 拍摄张数
*/
publicclassInitTimetoTakePic {
privatestaticInitTimetoTakePic mInstance;
privatestaticintcameraType =1;
Context mContext;
staticFrameLayout mSurfaceViewFrame;
privatestaticCamera mCamera;
privatestaticCameraPreview mPreview;
privatestaticString resolutionString ="1920x1080";
privatestaticString saveLocation = AppUtils.getSDCardPath();
privatestaticString extension ="JPG";
privatestaticString cameraStart ="1";
privatestaticString cameraNumber ="1";
privatestaticString cameraStop ="10";
privatestaticintnumber =0;
privatestaticbooleanclearVoice =false;
privateIntent intent;
privateInitTimetoTakePic(Context context) {
this.mContext = context;
}
publicsynchronizedstaticInitTimetoTakePic getInstance(Context context) {
mInstance =null;
mInstance =newInitTimetoTakePic(context);
returnmInstance;
}
publicvoidinitView(FrameLayout surfaceViewFrame) {
mSurfaceViewFrame = surfaceViewFrame;
}
/**
* 启动定时拍照并上传功能
*/
Handler mHandler =newHandler() {
@Override
publicvoidhandleMessage(Message msg) {
switch(msg.what) {
case1:
LogUtils.v("开始拍照");
initCarema();
break;
case2:
if(mCamera ==null) {
releaseCarema();
number =0;
mHandler.removeCallbacksAndMessages(null);
}else{
if(number < Integer.valueOf(cameraStop)) {
mCamera.autoFocus(newAutoFocusCallback() {
@Override
publicvoidonAutoFocus(booleansuccess, 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;
}
}
};
publicvoidstart() {
mHandler.sendEmptyMessageDelayed(1,1*1000);//7s 后开始启动相机
}
privatevoidinitCarema() {
LogUtils.v("initCarema");
if(mCamera ==null) {
LogUtils.v("camera=null");
mCamera = getCameraInstance();
mPreview =newCameraPreview(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
*/
privatebooleancheckCameraHardware(Context context) {
if(context.getPackageManager().hasSystemFeature(
PackageManager.FEATURE_CAMERA)) {
// 存在
returntrue;
}else{
// 不存在
returnfalse;
}
}
/**
* 打开一个Camera
*/
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
publicstaticCamera 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
//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");
}
returnc;
}
privatePictureCallback mPicture =newPictureCallback() {
@Override
publicvoidonPictureTaken(byte[] data, Camera camera) {
// 获取Jpeg图片，并保存在sd卡上
String path = saveLocation;
File dirF =newFile(path);
if(!dirF.exists()) {
dirF.mkdirs();
}
File pictureFile =newFile(path +"/"+ System.currentTimeMillis() +"."+ extension);//扩展名
try{
FileOutputStream fos =newFileOutputStream(pictureFile);
fos.write(data);
fos.close();
LogUtils.v("保存图成功");
number++;
intent =newIntent();
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();
}
};
publicvoidreleaseCarema() {
if(mCamera !=null) {
mCamera.stopPreview();
mCamera.release();
mCamera =null;
}
}
}
|
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