Android:Java . io . file Not found exception:不是整个文件

Question

我制作了一个聊天应用程序进行练习，并尝试使用我的可绘制文件夹中的add1.png图像作为默认配置文件图像，无论用户是否放置图像

这是我的代码片段

if (imageUri == null) { //when user has no image
                        //use default image as a profile image that in drawable folder
       imageUri = Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE +
                 "://" + getResources().getResourcePackageName(R.drawable.add1)
                 + '/' + getResources().getResourceTypeName(R.drawable.add1)
                 + '/' + getResources().getResourceEntryName(R.drawable.add1));
}

//insert into firebase storage
FirebaseStorage.getInstance().getReference().child("userImages").child(uid).putFile(imageUri).addOnCompleteListener(new OnCompleteListener<UploadTask.TaskSnapshot>() {...}

如果运行应用，则会发生异常，但默认映像 （add1.png） 会正确插入到 firebase 存储中。

这里有个例外。

 W/UploadTask: could not retrieve file size for upload android.resource://com.example.harag.myapplication/drawable/add1
          java.io.FileNotFoundException: Not a whole file
              at android.content.ContentResolver.openFileDescriptor(ContentResolver.java:812)
              at android.content.ContentResolver.openFileDescriptor(ContentResolver.java:749)
              at com.google.firebase.storage.UploadTask.<init>(Unknown Source)
              at com.google.firebase.storage.StorageReference.putFile(Unknown Source)
              at com.example.harag.myapplication.SignUpActivity$2$1.onComplete(SignUpActivity.java:92)
              at com.google.android.gms.tasks.zzf.run(Unknown Source)
              at android.os.Handler.handleCallback(Handler.java:739)
              at android.os.Handler.dispatchMessage(Handler.java:95)
              at android.os.Looper.loop(Looper.java:148)
              at android.app.ActivityThread.main(ActivityThread.java:5417)
              at java.lang.reflect.Method.invoke(Native Method)
              at       com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

谢谢大家！

Answer 1

您可以尝试以下代码。

Uri uri = Uri.parse("android.resource://org.xyz.abc/drawable/myimage");
or 
Uri uri=Uri.parse("android.resource://"+context.getPackageName()+"/drawable/myimage");

Answer 2

您需要使用上传任务。上传任务，可用于管理和监视上传的状态。

Uri file = Uri.fromFile(new File("path/to/images/rivers.jpg"));
StorageReference riversRef = storageRef.child("images/"+file.getLastPathSegment());
uploadTask = riversRef.putFile(file);

// Register observers to listen for when the download is done or if it fails
uploadTask.addOnFailureListener(new OnFailureListener() {
    @Override
    public void onFailure(@NonNull Exception exception) {
        // Handle unsuccessful uploads
    }
}).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
    @Override
    public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
        // taskSnapshot.getMetadata() contains file metadata such as size, content-type, and download URL.
        Uri downloadUrl = taskSnapshot.getDownloadUrl();
    }
});

Firebase上传文件