当我尝试从Firebase下载文件时，它显示此错误：
02-25 17:29:47.377 2297-2297/cyber.com.obsi.blackorn E/System: elements.add : /mnt/asec/cyber.com.obsi.blackorn-2/base.apk /mnt/asec/cyber.com.obsi.blackorn-2/base.apk /mnt/asec/cyber.com.obsi.blackorn-2/base.apk
02-25 17:29:49.514 2297-2297/cyber.com.obsi.blackorn E/MediaPlayer-JNI: QCMediaPlayer mediaplayer NOT present
02-25 17:30:07.323 2297-2413/cyber.com.obsi.blackorn E/StorageException: StorageException has occurred.
User does not have permission to access this object.
Code: -13021 HttpResult: 403
02-25 17:30:07.331 2297-2413/cyber.com.obsi.blackorn E/StorageException: { "error": { "code": 403, "message": "Permission denied. Could not perform this operation" }}
java.io.IOException: { "error": { "code": 403, "message": "Permission denied. Could not perform this operation" }}
at com.google.firebase.storage.network.NetworkRequest.parseResponse(com.google.firebase:firebase-storage@@16.0.5:455)
at com.google.firebase.storage.network.NetworkRequest.parseErrorResponse(com.google.firebase:firebase-storage@@16.0.5:435)
at com.google.firebase.storage.network.NetworkRequest.processResponseStream(com.google.firebase:firebase-storage@@16.0.5:426)
at com.google.firebase.storage.network.NetworkRequest.performRequest(com.google.firebase:firebase-storage@@16.0.5:280)
at com.google.firebase.storage.network.NetworkRequest.performRequest(com.google.firebase:firebase-storage@@16.0.5:294)
at com.google.firebase.storage.internal.ExponentialBackoffSender.sendWithExponentialBackoff(com.google.firebase:firebase-storage@@16.0.5:65)
at com.google.firebase.storage.internal.ExponentialBackoffSender.sendWithExponentialBackoff(com.google.firebase:firebase-storage@@16.0.5:57)
at com.google.firebase.storage.GetDownloadUrlTask.run(com.google.firebase:firebase-storage@@16.0.5:71)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:818)
02-25 17:30:18.884 2297-2437/cyber.com.obsi.blackorn E/StorageException: StorageException has occurred.
User does not have permission to access this object.
Code: -13021 HttpResult: 403
02-25 17:30:18.885 2297-2437/cyber.com.obsi.blackorn E/StorageException: { "error": { "code": 403, "message": "Permission denied. Could not perform this operation" }}
java.io.IOException: { "error": { "code": 403, "message": "Permission denied. Could not perform this operation" }}
at com.google.firebase.storage.network.NetworkRequest.parseResponse(com.google.firebase:firebase-storage@@16.0.5:455)
at com.google.firebase.storage.network.NetworkRequest.parseErrorResponse(com.google.firebase:firebase-storage@@16.0.5:435)
at com.google.firebase.storage.network.NetworkRequest.processResponseStream(com.google.firebase:firebase-storage@@16.0.5:426)
at com.google.firebase.storage.network.NetworkRequest.performRequest(com.google.firebase:firebase-storage@@16.0.5:280)
at com.google.firebase.storage.network.NetworkRequest.performRequest(com.google.firebase:firebase-storage@@16.0.5:294)
at com.google.firebase.storage.internal.ExponentialBackoffSender.sendWithExponentialBackoff(com.google.firebase:firebase-storage@@16.0.5:65)
at com.google.firebase.storage.internal.ExponentialBackoffSender.sendWithExponentialBackoff(com.google.firebase:firebase-storage@@16.0.5:57)
at com.google.firebase.storage.GetDownloadUrlTask.run(com.google.firebase:firebase-storage@@16.0.5:71)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:818)'
请在下面找到程序，我也更新了Firebase中的规则
package cyber.com.obsi.blackorn;
import android.app.DownloadManager;
import android.content.Context;
import android.content.Intent;
import android.graphics.PorterDuff;
import android.net.Uri;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.SeekBar;
import android.widget.TextView;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.storage.FirebaseStorage;
import com.google.firebase.storage.StorageReference;
import static android.os.Environment.DIRECTORY_DOWNLOADS;
public class Showdata extends AppCompatActivity {
private android.widget.VideoView videoView;
private android.widget.MediaController mediaController;
private FirebaseAuth firebaseAuth;
FirebaseStorage firebaseStorage;
StorageReference storageReference;
StorageReference ref;
private TextView txtview;
Intent intent=getIntent();
private String url;
int reqcode;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_showdata);
videoView = findViewById(R.id.videoView);
txtview =findViewById(R.id.downldtv);
firebaseAuth =FirebaseAuth.getInstance();
txtview.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
download();
}
});
Intent mintent= getIntent();
reqcode=mintent.getIntExtra("reqcode",0);
if(reqcode==0)
{
url="https://firebasestorage.googleapis.com/v0/b/blackcorncyber-aa14f.appspot.com/o/vlog.mp4?alt=media&token=3892d367-e151-4982-b4b5-38e62effb21d";
}
if(reqcode==1)
{
url= "https://firebasestorage.googleapis.com/v0/b/blackcorncyber-aa14f.appspot.com/o/y2mate.com%20-%20what_is_cyber_security_introduction_to_cyber_security_cyber_security_training_edureka_ooJSgsB5fIE_360p.mp4?alt=media&token=35e7e62d-46ec-4154-914b-652107e2b3ec";
}
String fullScreen = getIntent().getStringExtra("fullScreenInd");
if("y".equals(fullScreen)){
getWindow().setFlags(android.view.WindowManager.LayoutParams.FLAG_FULLSCREEN,
android.view.WindowManager.LayoutParams.FLAG_FULLSCREEN);
getSupportActionBar().hide();
}
android.net.Uri videoUri = android.net.Uri.parse(url);
videoView.setVideoURI(videoUri);
mediaController = new FullScreenMediaController(this);
mediaController.setAnchorView(videoView);
videoView.setMediaController(mediaController);
videoView.start();
}
public void download()
{
storageReference = firebaseStorage.getInstance().getReference();
ref =storageReference.child("Ashumatlabcerti.pdf");
ref.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
@Override
public void onSuccess(Uri uri) {
String url=uri.toString();
downloadfiles(Showdata.this,"Ashumatlabcerti","pdf",DIRECTORY_DOWNLOADS,url);
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
}
});
}
public void downloadfiles(Context context,String filename,String fileextension,String destinationdirectory,String url)
{
DownloadManager downloadManager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
Uri uri=Uri.parse(url);
DownloadManager.Request request= new DownloadManager.Request(uri);
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
request.setDestinationInExternalFilesDir(context,destinationdirectory,filename+fileextension);
downloadManager.enqueue(request);
}
}