在android中从gallery中选择大图像后禁用自动旋转

当我从gallery中选择图像并将其缩放以适应视图时，有时图像显示会自动旋转-90度。这很奇怪。 我注意到只有当选定的图像太大时才会发生这种情况。 代码或android可能有什么问题

我使用了以下代码-

public class MainActivity extends Activity {

TextView textTargetUri;
ImageView targetImage;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Button buttonLoadImage = (Button)findViewById(R.id.loadimage);
    textTargetUri = (TextView)findViewById(R.id.targeturi);
    targetImage = (ImageView)findViewById(R.id.targetimage);

    buttonLoadImage.setOnClickListener(new Button.OnClickListener(){

        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
            Intent intent = new Intent(Intent.ACTION_PICK,
                    android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
            startActivityForResult(intent, 0);
        }});

}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    // TODO Auto-generated method stub
    super.onActivityResult(requestCode, resultCode, data);

    if (resultCode == RESULT_OK){
        Uri targetUri = data.getData();
        textTargetUri.setText(targetUri.toString());

        Toast.makeText(getApplicationContext(), 
                "ImageView: " + targetImage.getWidth() + " x " + targetImage.getHeight(), 
                Toast.LENGTH_LONG).show();

        Bitmap bitmap;
        bitmap = decodeSampledBitmapFromUri(
                targetUri,
                targetImage.getWidth(), targetImage.getHeight());

        if(bitmap == null){
            Toast.makeText(getApplicationContext(), "the image data could not be decoded", Toast.LENGTH_LONG).show();

        }else{
            Toast.makeText(getApplicationContext(), 
                    "Decoded Bitmap: " + bitmap.getWidth() + " x " + bitmap.getHeight(), 
                    Toast.LENGTH_LONG).show();
            targetImage.setImageBitmap(bitmap);
        }   
    }
}

/*
 *  How to "Loading Large Bitmaps Efficiently"?
 *  Refer: http://developer.android.com/training/displaying-bitmaps/load-bitmap.html
 */

public Bitmap decodeSampledBitmapFromUri(Uri uri, int reqWidth, int reqHeight) {

    Bitmap bm = null;

    try{
        // First decode with inJustDecodeBounds=true to check dimensions
        final BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(getContentResolver().openInputStream(uri), null, options);

       //  Calculate inSampleSize
        options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);

        options.inJustDecodeBounds = false;
        bm = BitmapFactory.decodeStream(getContentResolver().openInputStream(uri), null, options);




    } catch (FileNotFoundException e) {
        e.printStackTrace();
        Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
    }

    return bm;
}

public int calculateInSampleSize(
        BitmapFactory.Options options, int reqWidth, int reqHeight) {
    // Raw height and width of image
    final int height = options.outHeight;
    final int width = options.outWidth;
    int inSampleSize = 1;

    if (height > reqHeight || width > reqWidth) {
        if (width > height) {
            inSampleSize = Math.round((float)height / (float)reqHeight);    
        } else {
            inSampleSize = Math.round((float)width / (float)reqWidth);  
        }   
    }
    return inSampleSize;    
}

}

移除

m.postRotate(90);

从你的代码 改变

options.inSampleSize = 2; 

而不是

options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);

移除

android:scaleType="centerCrop" 

也可以从图像视图 希望有帮助

删除

m.postRotate(90);

从你的代码 改变

options.inSampleSize = 2; 

而不是

options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);

移除

android:scaleType="centerCrop" 

也可以从图像视图

---

希望获得帮助

发布代码或将活动屏幕方向设置为“尝试选项”。inSampleSize=2；而不是options.inSampleSize=计算样本大小（选项、reqWidth、reqHeight）@DeepakSwami-我确实根据您的要求进行了更改，但同样的问题您是否可以粘贴您的活动？\u main.xml和manifest.xml？我也有同样的问题，我认为问题只会发生在大型设备上。仍然无法获得解决方案。发布代码或将活动屏幕方向设置为“尝试选项”。inSampleSize=2；而不是options.inSampleSize=计算样本大小（选项、reqWidth、reqHeight）@DeepakSwami-我确实根据您的要求进行了更改，但同样的问题您是否可以粘贴您的活动？\u main.xml和manifest.xml？我也有同样的问题，我认为问题只会发生在大型设备上。仍然没有得到解决方案。