当我使用Fresco使用
ImagePipeline获取Bitmap时,不明白行为.当我调试我的代码时,它正在执行onNewResultImpl或onFailureImpl,当我运行应用程序不工作意味着它没有被调用onFailureImpl或onNewResultImpl(我在运行应用程序时使用Toast和Log检查它).我见过这个
SO Question and take ref from it 和
from
Fresco's doc.
@Override
protected void onActivityResult(int requestCode,int resultCode,Intent data) {
super.onActivityResult(requestCode,resultCode,data);
if (resultCode == Activity.RESULT_OK) {
switch (requestCode) {
case ACTION_OPEN_GALLERY:
mImageCaptureUri = data.getData();
if (mImageCaptureUri != null) {
commentImgView.setImageURI(mImageCaptureUri);//mImageCaptureUri is working fine
try {
imageRequest = ImageRequestBuilder
.newBuilderWithSource(mImageCaptureUri)
.setRequestPriority(Priority.HIGH)
.setLowestPermittedRequestLevel(ImageRequest.RequestLevel.FULL_FETCH)
.build();
dataSource = imagePipeline.fetchDecodedImage(imageRequest,CommentActivity.this);
dataSource.subscribe(new BaseBitmapDataSubscriber() {
@Override
protected void onNewResultImpl(@Nullable Bitmap bitmap) {
if (bitmap != null) {
bmp = Bitmap.createBitmap(bitmap);
Log.d("Bitmap ","after callback");
Toast.makeText(CommentActivity.this,"has bitmap",Toast.LENGTH_SHORT).show();
} else {
Log.d("Bitmap is null ","bitmap is null",Toast.LENGTH_SHORT).show();
}
}
@Override
protected void onFailureImpl(DataSource<CloseableReference<CloseableImage>> dataSource) {
Log.d("Bitmap ","after callback failure");
Toast.makeText(CommentActivity.this,"Failure",Toast.LENGTH_SHORT).show();
}
},CallerThreadExecutor.getInstance());
} catch (Exception e){
e.printStackTrace();
} finally {
if (dataSource != null) {
dataSource.close();
}
}
}
}
}
}
注意：我试图从jpg图像获取位图,而不是从任何动画gif图像
解决方法
我已经删除了try并最终阻止并关闭了onNewResultImpl和onFailureImpl中的Datasource
代码段
ImageRequest imageRequest = ImageRequestBuilder
.newBuilderWithSource(mImageCaptureUri)
.setAutoRotateEnabled(true)
.build();
ImagePipeline imagePipeline = Fresco.getImagePipeline();
final DataSource<CloseableReference<CloseableImage>>
dataSource = imagePipeline.fetchDecodedImage(imageRequest,this);
dataSource.subscribe(new BaseBitmapDataSubscriber() {
@Override
public void onNewResultImpl(@Nullable Bitmap bitmap) {
if (dataSource.isFinished() && bitmap != null){
Log.d("Bitmap","has come");
bmp = Bitmap.createBitmap(bitmap);
dataSource.close();
}
}
@Override
public void onFailureImpl(DataSource dataSource) {
if (dataSource != null) {
dataSource.close();
}
}
},CallerThreadExecutor.getInstance());
