设置图像位图在 android 棉花糖中不起作用

Question

当我使用设置图像 Bitmap 方法在 ImageView 中设置 Bitmap 时，它在 android kitkat 中工作正常，但在 Marshmallow 它不起作用，我尝试通过复制图像 Bitmap 但没有成功，请帮助我解决这个问题任何帮助将不胜感激

 PictureCallback cameraPictureCallbackJpeg = new PictureCallback() 
  {  
    @Override
    public void onPictureTaken(byte[] data, Camera camera) 
    {
      // TODO Auto-generated method stub   
      Bitmap cameraBitmap = BitmapFactory.decodeByteArray(data, 0, data.length);

   int   wid = cameraBitmap.getWidth();
     int  hgt = cameraBitmap.getHeight();

    //  Toast.makeText(getApplicationContext(), wid+""+hgt, Toast.LENGTH_SHORT).show();
       newImage = Bitmap.createBitmap
                                        (wid, hgt, Bitmap.Config.ARGB_8888);

      Canvas canvas = new Canvas(newImage);

      canvas.drawBitmap(cameraBitmap, 0f, 0f, null);

     Drawable drawable = getResources().getDrawable(R.drawable.mark3);
        drawable.setBounds(20, 30, drawable.getIntrinsicWidth()+20, drawable.getIntrinsicHeight()+30);
        drawable.draw(canvas);


        lastimage = newImage.copy(newImage.getConfig(), true);


        if (newImage != null && !newImage.isRecycled()) {
            newImage.recycle();
            newImage = null;
        }

        imageview_visinon.setVisibility(View.VISIBLE);
        imageview_visinon.setImageBitmap(newImage);





        linear_capture.setVisibility(View.GONE);

        linear_okcancelpic.setVisibility(View.VISIBLE);

    }
  };

Answer 1

有时位图太大。这就是为什么 imageview 变成空白的原因！我想在这里你可以找到你需要的东西：http://developer.android.com/training/displaying-bitmaps/load-bitmap.html

Answer 2

if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        boolean hasPermission = (ContextCompat.checkSelfPermission(getBaseContext(),
                Manifest.permission.READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED);
        if (!hasPermission) {
            ActivityCompat.requestPermissions(this,
                    new String[]{Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE,
                            Manifest.permission.ACCESS_NETWORK_STATE, Manifest.permission.RECORD_AUDIO, Manifest.permission.MODIFY_AUDIO_SETTINGS, Manifest.permission.INTERNET
                    },
                    112);
        }
    }

设置图像位图在 android 棉花糖中不起作用

Set image bitmap not working in android marshmallow

android

canvas

bitmap

drawable

android-6.0-marshmallow