android---利用反射实现的屏幕录制技术

ScreenShotService.java

package com.screenshot.ui;      import android.annotation.SuppressLint;  import android.app.Service;  import android.content.Intent;  import android.graphics.Bitmap;  import android.graphics.Bitmap.Config;  import android.graphics.Canvas;  import android.graphics.Paint;  import android.os.Environment;  import android.os.Handler;  import android.os.IBinder;  import android.os.Message;  import android.view.View;    import java.io.File;  import java.io.FileNotFoundException;  import java.io.FileOutputStream;  import java.io.IOException;  import java.lang.reflect.Field;      public class ScreenShotService extends Service {      public static final boolean SSS_DEFAULT_START = false;      public static final boolean SSS_START = true;      public static final boolean SSS_STOP = false;      public static final String TRANSCRIBE_TAG = "TRANSCRIBE_TAG";      public static final long SSS_DELAY_MILLIS = 100L;      public static final  String SSS_FILE_PATH = "/luzhi/";      public static final int SSS_MSG_WHAT = 256;      private ScreenShotServiceHandler handler;      private boolean isStart = SSS_STOP;          private View[] getWindowDecorViews() throws Exception {          Class<?> windowManager = Class                  .forName("android.view.WindowManagerImpl");          Field viewsField = windowManager.getDeclaredField("mViews");          Field instanceField = windowManager.getDeclaredField("mWindowManager");          viewsField.setAccessible(true);          instanceField.setAccessible(true);          Object instance = instanceField.get(null);          View[] viewarray = (View[]) viewsField.get(instance);              if ((viewarray == null) || (viewarray.length < 0)) {              return null;          }          int i = 0;          View[] views = new View[viewarray.length];          for (View v : viewarray) {              views[i++] = v;          }              int[] arrayOfInt = new int[2];          View localView;          int j = 0;          int length = views.length;          for (i = 0; i < length; i++) {              localView = views[i];              localView.getLocationOnScreen(arrayOfInt);              if ((arrayOfInt[0] > 0) || (arrayOfInt[1] > 0)) {                  for (j = i + 1; j < views.length; j++) {                      views[j - 1] = views[j];                  }                  views[views.length - 1] = localView;                  length--;                  i--;              }          }          return views;      }          private void savePic(Bitmap paramBitmap, String paramString) {          FileOutputStream fos = null;          try {              fos = new FileOutputStream(paramString);              if (null != fos) {                  paramBitmap.compress(Bitmap.CompressFormat.PNG, 90, fos);                  fos.flush();                  fos.close();              }          } catch (FileNotFoundException e) {              e.printStackTrace();          } catch (IOException e) {              e.printStackTrace();          }      }          private void screenShot() {          try {              View[] arrayOfView = getWindowDecorViews();              Bitmap localBitmap = view2Bitmap(arrayOfView);              new saveFileThread(localBitmap).start();          } catch (Exception localException) {              localException.printStackTrace();          }      }          private Bitmap view2Bitmap(View paramView) {          Log.e("saveFileThread view2Bitmap(View view)");          paramView.setDrawingCacheEnabled(true);          paramView.buildDrawingCache();          Bitmap localBitmap1 = paramView.getDrawingCache();          Bitmap localBitmap2 = null;          if (localBitmap1 != null) {              localBitmap2 = Bitmap.createBitmap(localBitmap1);          }          paramView.destroyDrawingCache();          return localBitmap2;      }          private Bitmap view2Bitmap(View[] paramArrayOfView) {          Canvas localCanvas = null;          Paint localPaint = null;          Bitmap newbitmap = null;          int[] arrayOfInt = new int[2];              for (View localView : paramArrayOfView) {              Bitmap localBitmap = view2Bitmap(localView);              localView.getLocationOnScreen(arrayOfInt);              if (localBitmap != null) {                  if (localCanvas == null) {                      newbitmap = Bitmap.createBitmap(localView.getWidth(),                              localView.getHeight(), Config.ARGB_8888);// 创建一个新的和SRC                      localCanvas = new Canvas(newbitmap);                      localPaint = new Paint();                  }                  localCanvas.drawBitmap(localBitmap, arrayOfInt[0],                          arrayOfInt[1], localPaint);                  localBitmap.recycle();                  localBitmap = null;              }          }          if (localCanvas != null) {              localCanvas.save(Canvas.ALL_SAVE_FLAG);// 保存              localCanvas.restore();// 存储          }          return newbitmap;      }          public IBinder onBind(Intent paramIntent) {          return null;      }          public void onCreate() {          super.onCreate();          Log.e("ScreenShotService onCreate");          handler = new ScreenShotServiceHandler();      }          public void onStart(Intent paramIntent, int paramInt) {          super.onStart(paramIntent, paramInt);          Log.e("ScreenShotService onStart -----start----");          String str = TRANSCRIBE_TAG;          boolean localstart = paramIntent                  .getBooleanExtra(str, SSS_DEFAULT_START);          if (this.isStart != localstart) {              this.isStart = localstart;              if (this.isStart == SSS_START) {                  handler.sendEmptyMessageDelayed(SSS_MSG_WHAT, SSS_DELAY_MILLIS);              } else {                  handler.removeMessages(SSS_MSG_WHAT);              }          }      }          @SuppressLint({ "HandlerLeak", "HandlerLeak" })      private class ScreenShotServiceHandler extends Handler {          public void handleMessage(Message paramMessage) {              if (paramMessage.what == SSS_MSG_WHAT) {                  ScreenShotService.this.screenShot();                  if (ScreenShotService.this.isStart) {                      ScreenShotService.this.handler.sendEmptyMessageDelayed(                              SSS_MSG_WHAT, SSS_DELAY_MILLIS);                  }              }          }      }          private class saveFileThread extends Thread {          private Bitmap mbitmap;              public saveFileThread(Bitmap arg2) {              this.mbitmap = arg2;          }              public void run() {              if (this.mbitmap == null) {                  Log.e("saveFileThread run mbitmap is null ");              }              File localFile1 = Environment.getExternalStorageDirectory();              File localFile2 = new File(localFile1, SSS_FILE_PATH);              if (!localFile2.exists()) {                  localFile2.mkdirs();              }              String filename = localFile2.getAbsolutePath() + "/"                      + System.currentTimeMillis() + ".png";              Log.e("saveFileThread run picPath = " + filename);              ScreenShotService.this.savePic(mbitmap, filename);              this.mbitmap.recycle();              this.mbitmap = null;          }      }  }  

PlayActivity.java

package com.screenshot.ui;    import android.app.Activity;  import android.graphics.Bitmap;  import android.graphics.BitmapFactory;  import android.os.Bundle;  import android.os.Environment;  import android.os.Handler;  import android.os.Message;  import android.view.Window;  import android.view.WindowManager;  import android.widget.ImageView;  import java.io.File;  import java.util.Arrays;  import java.util.Comparator;    import com.screenshot.R;    public class PlayActivity extends Activity {      private PlayActivityHandler mHandler;      private ImageView play_iv;      private File[] arrayOfFile2;        private File[] getFileList() {          File localFile1 = Environment.getExternalStorageDirectory();          File localFile2 = new File(localFile1, ScreenShotService.SSS_FILE_PATH);          File[] arrayOfFile;          if (!localFile2.exists()) {              return null;          }          arrayOfFile = localFile2.listFiles();          Arrays.sort(arrayOfFile, new Comparator<File>() {                @Override              public int compare(File paramFile1, File paramFile2) {                  long file1name = Long.valueOf(getFileNameNoEx(paramFile1                          .getName()));                  long file2name = Long.valueOf(getFileNameNoEx(paramFile2                          .getName()));                  return (int) (file1name - file2name);              }            });          return arrayOfFile;      }        private void play() {          arrayOfFile2 = getFileList();          mHandler.setCount(0);          mHandler.sendEmptyMessageDelayed(ScreenShotService.SSS_MSG_WHAT,                  ScreenShotService.SSS_DELAY_MILLIS);      }        public String getExtensionName(String paramString) {          if ((paramString != null) && (paramString.length() > 0)) {              int i = paramString.lastIndexOf('.');              if (i > -1) {                  int j = paramString.length() + -1;                  if (i < j) {                      int k = i + 1;                      paramString = paramString.substring(k);                  }              }          }          return paramString;      }        public String getFileNameNoEx(String paramString) {          if ((paramString != null) && (paramString.length() > 0)) {              int i = paramString.lastIndexOf('.');              if (i > -1) {                  int j = paramString.length();                  if (i < j)                      paramString = paramString.substring(0, i);              }          }          return paramString;      }        protected void onCreate(Bundle paramBundle) {          super.onCreate(paramBundle);          // 设置无标题          requestWindowFeature(Window.FEATURE_NO_TITLE);          // 设置全屏          getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,                  WindowManager.LayoutParams.FLAG_FULLSCREEN);            setContentView(R.layout.play);          this.play_iv = (ImageView) findViewById(R.id.play_iv);          mHandler = new PlayActivityHandler();          play();      }        private class PlayActivityHandler extends Handler {          private int count = 0;          //private Bitmap localBitmap;          public void setCount(int vaule) {              count = vaule;          }            @Override          public void handleMessage(Message msg) {              if (arrayOfFile2 != null && count < arrayOfFile2.length) {                                 Bitmap localBitmap = BitmapFactory                          .decodeFile(arrayOfFile2[count++].getAbsolutePath());                  play_iv.setImageBitmap(localBitmap);                  mHandler.sendEmptyMessageDelayed(                          ScreenShotService.SSS_MSG_WHAT,                          ScreenShotService.SSS_DELAY_MILLIS);                              }          }        }  }