如何在背景中捕捉surfaceview的截图

Question

我的应用程序中我想捕捉与surfaceview屏幕，但我不能捕获屏幕上与background.how绘制与background.please一起绘制屏幕我如何解决这个问题。

  View content = findViewById(R.id.relative21); 
     content.setDrawingCacheEnabled(true); 

     SurfaceHolder sfhTrack = drawingSurface.getHolder(); 
       sfhTrack.setFormat(PixelFormat.TRANSPARENT); 

       private void getScreen() { 
      // TODO Auto-generated method stub 

      View content = findViewById(R.id.relative21); 
       Bitmap bitmap = content.getDrawingCache(); 
      File myDir=new File("/sdcard/saved_images"); 
       myDir.mkdirs(); 
       Random generator = new Random(); 
       int n = 10000; 
       n = generator.nextInt(n); 
       String fname = "Image-"+ n +".png"; 
       File file = new File (myDir, fname); 
       try 
       { 

        FileOutputStream ostream = new FileOutputStream(file); 
        bitmap.compress(CompressFormat.PNG, 100, ostream); 
        ostream.close(); 
       } 
       catch (Exception e) 
       { 
        e.printStackTrace(); 
       } 
    } 

我试过上面的代码我能够保存背景，但我不能保存绘制。

Answer 1

public static Bitmap overlay(Bitmap bmp1,Bitmap bmp2) { 
     Bitmap bmOverlay = Bitmap.createBitmap(bmp1.getWidth(), bmp1.getHeight(),  bmp1.getConfig()); 
     Canvas canvas = new Canvas(bmOverlay); 
     canvas.drawBitmap(bmp1, 0,0, null); 

     canvas.drawBitmap(bmp2, 0, 0, null); 
     Log.i("bmOverlay.......",""+bmOverlay); 
     bmp3=bmOverlay; 
     return bmOverlay; 
    } 

     private void getScreen() { 
     Toast.makeText(BookType1.this, "saved", Toast.LENGTH_SHORT).show(); 
      File myDir=new File("/sdcard/saved_images"); 
      myDir.mkdirs(); 
      Random generator = new Random(); 
      int n = 10000; 
      n = generator.nextInt(n); 
      String fname = "Image-"+ n +".png"; 
      File file = new File (myDir, fname); 


     try 
     { 

      FileOutputStream ostream = new FileOutputStream(file); 
      bmp3.compress(CompressFormat.PNG, 100, ostream); 


      ostream.close(); 
     } 
     catch (Exception e) 
     { 
      e.printStackTrace(); 
     } 
    } 

通过重叠两个位图i的一个位图我捕获背景解决这个问题，并在第二位图我捕获表面视图和我都重叠在此我得到溶液。