问题描述
Picasso 在使用图像 Uri 在 android 10 中显示图像时存在图像旋转问题
Uri uri = "content://media/external/images/media/12155";
Picasso.get().load(uri).into(imageView);
我使用的是最新版本 2.8
这是原图
如果 android API 28 例如该问题发生在大于或等于 android 29 时未发现此问题
解决方法
这个类解决问题
https://daniel.perez.sh/blog/2015/image-orientation-picasso/
package com.example.util;
import android.annotation.TargetApi;
import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.net.Uri;
import android.os.Build;
import android.provider.MediaStore;
import com.squareup.picasso.Transformation;
@TargetApi(Build.VERSION_CODES.KITKAT)
public class ExifTransformation implements Transformation {
private static final String[] CONTENT_ORIENTATION = new String[] {
MediaStore.Images.ImageColumns.ORIENTATION
};
final Context context;
final Uri uri;
public ExifTransformation(Context context,Uri uri) {
this.context = context;
this.uri = uri;
}
@Override
public Bitmap transform(Bitmap source) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) return source;
int exifRotation = getExifOrientation(context,uri);
if (exifRotation != 0) {
Matrix matrix = new Matrix();
matrix.preRotate(exifRotation);
Bitmap rotated =
Bitmap.createBitmap(source,source.getWidth(),source.getHeight(),matrix,true);
if (rotated != source) {
source.recycle();
}
return rotated;
}
return source;
}
@Override
public String key() {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) return "documentTransform()";
return "documentExifTransform(" + uri.toString() + ")";
}
public static int getExifOrientation(Context context,Uri photoUri) {
Cursor cursor = context.getContentResolver().query(photoUri,CONTENT_ORIENTATION,null,null);
if (cursor.getCount() != 1) {
return -1;
}
cursor.moveToFirst();
return cursor.getInt(0);
}
}
加载图像时,下面给出了想要的结果:
Picasso
.with(this)
.load(uri)
.transform(new ExifTransformation(this,uri))
.into(imageView);