getDownloadUrl（）出现此错误，我不知道如何解决更新DownloadUrl（）之后的问题。
Java：
import android.annotation.SuppressLint;
import android.app.ProgressDialog;
import android.content.ContentResolver;
import android.content.Intent;
import android.media.Image;
import android.net.Uri;
import android.os.Message;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.webkit.MimeTypeMap;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import com.google.android.gms.tasks.Continuation;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.auth.UserProfileChangeRequest;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import com.google.firebase.storage.FirebaseStorage;
import com.google.firebase.storage.StorageReference;
import com.google.firebase.storage.StorageTask;
import com.google.firebase.storage.UploadTask;
import com.squareup.picasso.Picasso;
import com.theartofdev.edmodo.cropper.CropImage;
import com.theartofdev.edmodo.cropper.CropImageView;
import java.util.HashMap;
import de.hdodenhof.circleimageview.CircleImageView;
public class SettingActivity extends AppCompatActivity {
private Button updateaccountsettings;
private EditText username, userstatus;
private CircleImageView userprofileimage;
private String currentUserID,downloadImageUrl;
private FirebaseAuth mAuth;
private DatabaseReference RootRef;
private StorageReference UserProfileImagesRef;
private static final int RESULT_OK= 1;
public Uri imageUri;
private StorageTask uploadTask;
private static final int GalleryPick = 1;
private ProgressDialog loadingBar;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_setting);
mAuth = FirebaseAuth.getInstance();
currentUserID = mAuth.getCurrentUser().getUid();
RootRef = FirebaseDatabase.getInstance().getReference();
UserProfileImagesRef=FirebaseStorage.getInstance().getReference().child("Profile Images");
loadingBar = new ProgressDialog(this);
IntitializeFiels();
updateaccountsettings.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
UpdateSetting();
}
});
RetrieveUserInfo();
userprofileimage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent gallerIntent=new Intent();
gallerIntent.setAction(Intent.ACTION_GET_CONTENT);
gallerIntent.setType("iamge/*");
startActivityForResult(gallerIntent,GalleryPick);
}
});
}
private void IntitializeFiels() {
updateaccountsettings = (Button) findViewById(R.id.update);
username = (EditText) findViewById(R.id.setuser);
userstatus = (EditText) findViewById(R.id.setprofilestatus);
userprofileimage = (CircleImageView) findViewById(R.id.profile_image);
loadingBar=new ProgressDialog(this);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
if(requestCode==GalleryPick && resultCode==RESULT_OK && data!=null)
{
Uri ImageUri=data.getData();
CropImage.activity()
.setGuidelines(CropImageView.Guidelines.ON)
.setAspectRatio(1,1)
.start(this);
}
if (requestCode == CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE) {
CropImage.ActivityResult result = CropImage.getActivityResult(data);
if(resultCode==RESULT_OK)
{
loadingBar.setTitle("Set Profile Image");
loadingBar.setMessage("Please Wait");
loadingBar.setCanceledOnTouchOutside(false);
loadingBar.show();
Uri resultUri=result.getUri();
StorageReference filepath=UserProfileImagesRef.child(currentUserID +".jpg");
filepath.putFile(resultUri).addOnCompleteListener(new OnC
ompleteListener<UploadTask.TaskSnapshot>() {
@Override
public void onComplete(@NonNull Task<UploadTask.TaskSnapshot> task)
{
if(task.isSuccessful())
{
Toast.makeText(SettingActivity.this, "Profile Image Uploaded Successfully ", Toast.LENGTH_SHORT).show();
final String downloadUrl=task.getResult().getDownloadUrl().toString();
RootRef.child("Users").child(currentUserID).child("image")
.setValue(downloadUrl)
.addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task)
{
if(task.isSuccessful())
{
Toast.makeText(SettingActivity.this, "Saved in Database ", Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
}
else
{
Toast.makeText(SettingActivity.this, "Not Saved ", Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
}
}
});
}
else
{
String message=task.getException().toString();
Toast.makeText(SettingActivity.this, "Error: "+message, Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
}
}
});
}
}
}
private void UpdateSetting() {
String setUserName = username.getText().toString();
String setStatus = userstatus.getText().toString();
if (TextUtils.isEmpty(setUserName)) {
Toast.makeText(SettingActivity.this, "Please Write your Username first....", Toast.LENGTH_SHORT).show();
}
if (TextUtils.isEmpty(setStatus)) {
Toast.makeText(SettingActivity.this, "Please Write your Status....",Toast.LENGTH_SHORT).show();
}
else {
HashMap<String, String> profileMap = new HashMap<>();
profileMap.put("uid", currentUserID);
profileMap.put("name", setUserName);
profileMap.put("status", setStatus);
RootRef.child("Users").child(currentUserID).setValue(profileMap)
.addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
if (task.isSuccessful()) {
SendUserToMainActivity();
Toast.makeText(SettingActivity.this, "Profile Updated Successfully.... ", Toast.LENGTH_SHORT).show();
}
else {
String message = task.getException().toString();
Toast.makeText(SettingActivity.this, "Error " + message, Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
}
}
});
}
}
private void SendUserToMainActivity() {
Intent MainIntent = new Intent(SettingActivity.this, MainActivity.class);
MainIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(MainIntent);
}
private void RetrieveUserInfo() {
RootRef.child("Users").child(currentUserID)
.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
if ((dataSnapshot.exists()) && (dataSnapshot.hasChild("name") && (dataSnapshot.hasChild("image")))) {
String retrieveUserName = dataSnapshot.child("name").getValue().toString();
String retrieveStatus = dataSnapshot.child("status").getValue().toString();
String retrieveProfileImage = dataSnapshot.child("image").getValue().toString();
username.setText(retrieveUserName);
userstatus.setText(retrieveStatus);
Picasso.get().load(retrieveProfileImage).into(userprofileimage);
} else if ((dataSnapshot.exists()) && (dataSnapshot.hasChild("name"))) {
String retrieveUserName = dataSnapshot.child("name").getValue().toString();
String retrieveStatus = dataSnapshot.child("status").getValue().toString();
username.setText(retrieveUserName);
userstatus.setText(retrieveStatus);
} else {
Toast.makeText(SettingActivity.this, "Please set @update your profile Information ", Toast.LENGTH_SHORT).show();
}
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
}
}