Picasso无法在StorageReference的onSuccess方法中加载图像

Question

在运行时onStart()方法上尝试Picasso时,它通常使用控制台的下载链接从Firebase加载图像.

但是当我尝试在StorageReference onSuccess方法中加载图像时,它就无法工作.

这个类正在扩展片段:

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    if (requestCode == GALLERY_IN && resultCode == Activity.RESULT_OK) {
        isGranted = true;
        String path = FireStorage.retUID() + "/";
        showIndProgress();
        Uri uri = data.getData();

        StorageReference childPathRef = FireStorage.storageRef.child(path + uri.getLastPathSegment());
        childPathRef.putFile(uri)
                .addOnCompleteListener(new OnCompleteListener<UploadTask.TaskSnapshot>() {
                    @Override
                    public void onComplete(@NonNull Task<UploadTask.TaskSnapshot> task) {
                        if(task.isSuccessful()) {
                            Picasso.with(mContext).load(task.getResult().getDownloadUrl())
                                    .into(profView);

                            Picasso.Builder build = new Picasso.Builder(mContext);
                            build.listener(new Picasso.Listener() {
                                @Override
                                public void onImageLoadFailed(Picasso picasso, Uri uri, Exception exception) {
                                    Toast.makeText(mContext, "exception\n" + exception.toString(), Toast.LENGTH_SHORT).show();

                                }
                            });
                            progressDialog.dismiss();
                        } else {
                            //failed
                        }

                    }
                });

    }

}

这是我在另一个类上的FirebaseStorage实例:

public static FirebaseStorage storage = FirebaseStorage.getInstance();
public static StorageReference storageRef = 
                           storage.getReferenceFromUrl("gs://myurl.appspot.com/");

表现:

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

我的XML布局:

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="200dp"
    android:background="@drawable/gcover"
    android:id="@+id/relativeLayout">

    <de.hdodenhof.circleimageview.CircleImageView xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/profPhoto"
        android:clickable="true"
        android:layout_width="120dp"
        android:layout_height="120dp"
        android:padding="20dp"
        android:src="@drawable/default_prof"
        android:scaleType="centerCrop"
        app:civ_border_color="@color/trans"
        app:civ_border_width="2dp"
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true" />

</RelativeLayout>

我的观点初始化:

@Override
public View onCreateView(LayoutInflater inflater,
                         ViewGroup container,
                         Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_prof, container, false);
    profView = (CircleImageView) view.findViewById(R.id.profPhoto);

    btn1 = (Button) view.findViewById(R.id.btn_1);
    btn2 = (Button) view.findViewById(R.id.btn_2);
    btn3 = (Button) view.findViewById(R.id.btn_3);
    return view;
}

Answer 1

更新2:

虽然我发布的代码对我有效,但您表明它对您失败了.我的测试没有使用片段,我不知道你正在使用什么版本的库,现在知道如何将片段添加到布局等等.有太多可能的原因导致不同的行为有效地调试它在SO上.

作为实验,您可以尝试使用Glide和FirebaseUI来执行下载而不是Picasso.代码如下所示,适合我.由于下载来自存储引用而非URL,因此此方法需要对存储的读取权限.您还需要将这些行添加到构建依赖项中:

// FirebaseUI 2.0.1 is the version to use for Firebase SDK version 11.0.1
// SDK/Firebase version compatibility is important.
// See the FirebaseUI docs for a table of compatible versions.
compile 'com.firebaseui:firebase-ui-storage:2.0.1'
compile 'com.github.bumptech.glide:glide:3.8.0'

.

childPathRef.putFile(Uri.fromFile(file))
    .addOnCompleteListener(new OnCompleteListener<UploadTask.TaskSnapshot>() {
        @Override
        public void onComplete(@NonNull Task<UploadTask.TaskSnapshot> task) {
            if (task.isSuccessful()) {
                Log.d(TAG, "Upload: SUCCESS");

                Glide.with(mContext)
                    .using(new FirebaseImageLoader())
                    .load(childPathRef)
                    .dontAnimate()
                    .listener(new RequestListener<StorageReference, GlideDrawable>() {
                        @Override
                        public boolean onException(Exception e, StorageReference model,
                               Target<GlideDrawable> target, boolean isFirstResource) {
                            Log.e(TAG, "Download: FAILED: ", e);
                            return false;
                        }
                        @Override
                        public boolean onResourceReady(GlideDrawable resource,
                               StorageReference model, Target<GlideDrawable> target,
                               boolean isFromMemoryCache, boolean isFirstResource) {
                            Log.d(TAG, "Download: SUCCESS");
                            return false;
                        }
                    })
                    .into(mCircleImageView);
            } else {
                Log.e(TAG, "Upload: FAILED: " + task.getException().getMessage());
            }
        }
    });

更新:

其他调试显示上传和下载都是成功完成的.问题在于渲染下载的图像.CircleImageView的文档表明noFade()从毕加索下载时必须使用:

如果您使用像Picasso或Glide这样的图像加载库,则需要禁用其淡入淡出动画以避免混淆图像.毕加索使用该noFade()选项,适用于Glide dontAnimate().

还发现渲染了小图像,但是大图像显示为黑色.fit()被添加以使毕加索调整图像大小.

要检测上载成功和失败,请使用完成侦听器而不仅仅是成功侦听器,然后进行测试task.isSuccessful().由于安全规则,上传可能会失败,或者无效StorageReference:

StorageReference childPathRef = Class.storageRef.child(path + uri.getLastPathSegment());
childPathRef.putFile(uri).addOnCompleteListener(new OnCompleteListener<UploadTask.TaskSnapshot>() {
    @Override
    public void onComplete(@NonNull Task<UploadTask.TaskSnapshot> task) {
        if (task.isSuccessful()) {
            Log.d(TAG, "Upload: SUCCESS");
            Picasso.with(mContext)
                .load(task.getResult().getDownloadUrl())
                .noFade()
                .fit()
                .into(profView, new Callback() {
                    @Override
                    public void onSuccess() {
                        Log.d(TAG, "Download: SUCCESS");
                        Toast.makeText(mContext, "download done" , Toast.LENGTH_SHORT).show();                        }

                    @Override
                    public void onError() {
                        Log.d(TAG, "Download: FAILED");
                    }
                });
            Toast.makeText(mContext, "upload done" , Toast.LENGTH_SHORT).show();
        } else {
            Log.e(TAG, "Upload: FAILED: " + task.getException().getMessage());
        }
        progressDialog.dismiss();
    }
});

Answer 2

我刚刚从CircleImageView切换到普通ImageView，它突然起作用了。