我有一个Recycle View用于显示所有照片缩略图项。当点击某个项时,我使用转换将此项中的ImageView传递到详细活动中。问题在于,图片源是通过UIL从互联网上获取的。并且有时(并非总是),图像不能重新加载正确的大小,如下所示:
// on view holder item click
final Pair<View, String>[] pairs = TransitionHelper.createSafeTransitionParticipants(this, false,
new Pair<>(((ItemViewHolder) viewHolder).thumbnail, getString(R.string.TransitionName_Profile_Image)),
new Pair<>(((ItemViewHolder) viewHolder).tvName, getString(R.string.TransitionName_Profile_Name)));
ActivityOptionsCompat transitionActivityOptions = ActivityOptionsCompat.makeSceneTransitionAnimation(this, pairs);
startActivityForResult(intent, requestCode, transitionActivityOptions.toBundle());
详细活动
// try to post pone transition until UIL load finish
ActivityCompat.postponeEnterTransition(this);
getSupportFragmentManager().beginTransaction().replace(R.id.layoutContent, new DetailFragment()).commit();
片段详情
ImageLoader.getInstance().displayImage(url, imageViewDetail, new ImageLoadingListener() {
@Override
public void onLoadingStarted(String imageUri, View view) {
}
@Override
public void onLoadingFailed(String imageUri, View view, FailReason failReason) {
finishAnimation();
}
@Override
public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
finishAnimation();
}
@Override
public void onLoadingCancelled(String imageUri, View view) {
finishAnimation();
}
});
private void finishAnimation(){
ActivityCompat.startPostponedEnterTransition(getActivity());
imageViewDetail.invalidate();
}
fragment_detail.xml
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<ImageView
android:transitionName="@string/TransitionName.Profile.Image"
android:id="@+id/imageViewDetail"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:adjustViewBounds="true"
android:scaleType="centerCrop"/>
</FrameLayout>
我甚至等待视图布局完成后再加载图片,但仍然不起作用:
imageViewDetail.getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
@Override
public boolean onPreDraw() {
// code load image from UIL
return false;
}
});
有什么方法可以避免这个问题吗?