获取Bitmap附加到BitView

6 回答

• 0

  Bitmap bitmap = ((BitmapDrawable)image.getDrawable()).getBitmap();
  

  回复于 2024-05-02T13:45:29+08:00
• 42

  这将从 ImageView 获得 Bitmap . 但是，它与您设置的位图对象不同 . 这是一个新的 .

  imageView.buildDrawingCache();
  Bitmap bitmap = imageView.getDrawingCache();
  

  ===编辑===

  imageView.setDrawingCacheEnabled(true);
   imageView.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), 
                     MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
   imageView.layout(0, 0, 
                    imageView.getMeasuredWidth(), imageView.getMeasuredHeight()); 
   imageView.buildDrawingCache(true);
   Bitmap bitmap = Bitmap.createBitmap(imageView.getDrawingCache());
   imageView.setDrawingCacheEnabled(false);
  

  回复于 2024-05-02T13:45:29+08:00
• -9

  写下面的代码

  ImageView yourImageView = (ImageView) findViewById(R.id.yourImageView);
  Bitmap bitmap = ((BitmapDrawable)yourImageView.getDrawable()).getBitmap();
  

  回复于 2024-05-02T13:45:29+08:00
• -1

  这段代码更好 .

  public static  byte[] getByteArrayFromImageView(ImageView imageView)
      {
          BitmapDrawable bitmapDrawable = ((BitmapDrawable) imageView.getDrawable());
          Bitmap bitmap;
          if(bitmapDrawable==null){
              imageView.buildDrawingCache();
              bitmap = imageView.getDrawingCache();
              imageView.buildDrawingCache(false);
          }else
          {
              bitmap = bitmapDrawable .getBitmap();
          }
          ByteArrayOutputStream stream = new ByteArrayOutputStream();
          bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
          return stream.toByteArray();
      }
  

  回复于 2024-05-02T13:45:29+08:00
• 1

  获取图像位图的其他方法是这样做：

  Bitmap imagenAndroid = BitmapFactory.decodeResource(getResources(),R.drawable.jellybean_statue);
  imageView.setImageBitmap(imagenAndroid);
  

  回复于 2024-05-02T13:45:29+08:00
• 769

  试试这段代码：

  Bitmap bitmap;
  bitmap = ((BitmapDrawable)image.getDrawable()).getBitmap();
  

  回复于 2024-05-02T13:45:29+08:00