从图库中选取图像，并在图像视图中设置相同大小的图像视图

Question

我想从图库中选择图像并在活动中的imageview中设置相同大小的图像，但我编写了代码，但它在imageview中没有以相同的大小显示。 它的显示很小。如何实现相同的尺寸。

这是它的图像视图的设置大小

mainImageView.setLayoutParams(new LayoutParams(VirtualMirrorActivity.convertDpToPixel(270,this),VirtualMirrorActivity.convertDpToPixel(280, this)));
mainImageView.setBackgroundResource(R.layout.border);
LinearLayout linearLayout=(LinearLayout)findViewById(R.id.linearLayout);
linearLayout.addView(mainImageView);

从库中选取图像的意图。

Intent intent = new Intent(Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(Intent.createChooser(intent, "Select Picture"),10);
if (requestCode == 10 && resultCode == Activity.RESULT_OK) 
            {             
                Uri contentUri = data.getData();          
                String[] proj = { MediaStore.Images.Media.DATA };         
                Cursor cursor = managedQuery(contentUri, proj, null, null, null);         
                int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);         
                cursor.moveToFirst();         
                imageUri = Uri.parse(cursor.getString(column_index));
                InputStream stream = getContentResolver().openInputStream(data.getData());
                tempBitmap = BitmapFactory.decodeStream(stream);
                mainImageView.setImageBitmap(tempBitmap);
                if(tempBitmap!=null)
                {
                    isModel = false;
                    VMAdjustFrame.issaved = false;
                    isPhotofromAccount = false;
                    isPhotoChanged = true;
                }
            }
        }

Answer 1

mainImageView.setLayoutParams().height = 270 mainImageView.setLayoutParams().width= 270

图像大小

删除它并尝试上面的代码 mainImageView.setLayoutParams(new LayoutParams(VirtualMirrorActivity.convertDpToPixel(270,this),VirtualMirrorActivity.convertDpToPixel(280, this)));