本文介绍了无法将图像上传到App和Firebase Android Studio的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
请帮助我，我成功地用图库和照相机选择了图像.但图像未显示在图像视图或Firebase存储中.
please help me, I success to pick an image with a gallery and camera. but image not showing in image view or firebase storage.
这是我的清单
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA"/>
这是我显示或上传图片的代码
this is my code to show or upload images
FirebaseAuth firebaseAuth;
FirebaseUser user;
ImageView ava,cover2;
TextView nametv,biotv;
FirebaseDatabase firebaseDatabase;
DatabaseReference databaseReference;
FloatingActionButton floatingActionButton;
ProgressDialog progressDialog;
private static final int CAMERA_REQUEST_CODE = 100;
private static final int STORAGE_REQUEST_CODE = 200;
private static final int IMAGE_PICK_CAMERA_CODE = 300;
private static final int IMAGE_PICK_GALLERY_CODE = 400;
String cameraPermissions[];
String storagePermissions[];
Uri image_uri;
String profilorcover;
StorageReference storageReference;
String storagePath = "Users_Profile_Cover_Imgs/";
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_prof, container, false);
firebaseAuth = FirebaseAuth.getInstance();
user = firebaseAuth.getCurrentUser();
firebaseDatabase = FirebaseDatabase.getInstance();
databaseReference = firebaseDatabase.getReference("Users");
progressDialog = new ProgressDialog(getActivity());
ava = view.findViewById(R.id.avaim);
nametv = view.findViewById(R.id.namatv);
biotv = view.findViewById(R.id.biotv);
cover2 = view.findViewById(R.id.rela);
floatingActionButton = view.findViewById(R.id.editbtn);
storageReference = getInstance().getReference();
相机权限
cameraPermissions = new String [] {Manifest.permission.CAMERA，Manifest.permission.WRITE_EXTERNAL_STORAGE}； storagePermissions = new String [] {Manifest.permission.WRITE_EXTERNAL_STORAGE};
cameraPermissions = new String[]{Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE}; storagePermissions = new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE};
Query query = databaseReference.orderByChild("email").equalTo(user.getEmail());
query.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
for(DataSnapshot ds : dataSnapshot.getChildren()){
String name = ""+ ds.child("name").getValue();
String email = ""+ ds.child("email").getValue();
String bio = ""+ ds.child("bio").getValue();
String image = ""+ ds.child("image").getValue();
String cover = ""+ds.child("cover").getValue();
nametv.setText(name);
biotv.setText(bio);
try {
Picasso.get().load(image).into(ava);
}
catch (Exception e){
Picasso.get().load(R.drawable.ic_cam_name).into(ava);
}
try {
Picasso.get().load(cover).into(cover2);
}
catch (Exception e){
}
}
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
floatingActionButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
editprofil();
}
});
return view;
}
private boolean checkstorage(){
boolean result = ContextCompat.checkSelfPermission(getActivity(), Manifest.permission.WRITE_EXTERNAL_STORAGE)
== (PackageManager.PERMISSION_GRANTED);
return result;
}
private void reqstorage(){
requestPermissions(storagePermissions, STORAGE_REQUEST_CODE);
}
private boolean checkcam(){
boolean result = ContextCompat.checkSelfPermission(getActivity(), Manifest.permission.CAMERA)
== (PackageManager.PERMISSION_GRANTED);
boolean result1 = ContextCompat.checkSelfPermission(getActivity(), Manifest.permission.WRITE_EXTERNAL_STORAGE)
== (PackageManager.PERMISSION_GRANTED);
return result && result1;
}
private void reqcam(){
requestPermissions(cameraPermissions, CAMERA_REQUEST_CODE);
}
private void editprofil() {
String pengaturan[] = {"Edit Foto Profil", "Edit Foto Sampul", "Edit Nama", "Edit Bio"};
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle("Edit Profil");
builder.setItems(pengaturan, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
if (i == 0){
progressDialog.setMessage("Mengubah Profil");
profilorcover = "image";
showimage();
}
else if (i == 1){
progressDialog.setMessage("Mengubah Profil");
profilorcover = "cover";
showimage();
}
else if (i == 2){
progressDialog.setMessage("Mengubah Profil");
shownamebio("name");
}
else if (i == 3){
progressDialog.setMessage("Mengubah Profil");
shownamebio("bio");
}
}
});
builder.create().show();
}
private void showimage() {
String pengaturan[] = {"Camera", "Gallery"};
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle("Edit Profil");
builder.setItems(pengaturan, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
if (i == 0){
if (!checkcam()){
reqcam();
}
else{
memilih();
}
}
else if (i == 1){
if (!checkstorage()){
reqstorage();
}
else{
memilihgal();
}
}
}
});
builder.create().show();
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
switch (requestCode){
case CAMERA_REQUEST_CODE:{
if (grantResults.length >0){
boolean cameraacc = grantResults[0] == PackageManager.PERMISSION_GRANTED;
boolean writestor = grantResults[1] == PackageManager.PERMISSION_GRANTED;
if(cameraacc && writestor){
memilih();
}
else {
Toast.makeText(getActivity(), "Setujui Kamera dan File Manager", Toast.LENGTH_SHORT).show();
}
}
}
break;
case STORAGE_REQUEST_CODE:{
if (grantResults.length >0){
boolean writestor = grantResults[0] == PackageManager.PERMISSION_GRANTED;
if(writestor){
memilihgal();
}
else {
Toast.makeText(getActivity(), "Setujui File Manager", Toast.LENGTH_SHORT).show();
}
}
}
break;
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
if (requestCode == RESULT_OK){
if(requestCode == IMAGE_PICK_GALLERY_CODE){
image_uri = data.getData();
uploadprofile(image_uri);
}
if (requestCode == IMAGE_PICK_CAMERA_CODE){
uploadprofile(image_uri);
}
}
super.onActivityResult(requestCode, resultCode, data);
}
private void uploadprofile(Uri uri) {
progressDialog.show();
String file = storagePath+ ""+ profilorcover +"_"+ user.getUid();
StorageReference storageReference2 = storageReference.child(file);
storageReference2.putFile(uri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
Task<Uri> uriTask = taskSnapshot.getStorage().getDownloadUrl();
while (!uriTask.isSuccessful());
Uri downloaduri = uriTask.getResult();
if (uriTask.isSuccessful()){
HashMap<String, Object> results = new HashMap<>();
results.put(profilorcover, downloaduri.toString());
databaseReference.child(user.getUid()).updateChildren(results)
.addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid) {
progressDialog.dismiss();
Toast.makeText(getActivity(), "Mengubah Gambar...", Toast.LENGTH_SHORT).show();
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
progressDialog.dismiss();
Toast.makeText(getActivity(), "Tidak dapat mengubah gambar...", Toast.LENGTH_SHORT).show();
}
});
}
else{
progressDialog.dismiss();
Toast.makeText(getActivity(), "Error", Toast.LENGTH_SHORT).show();
}
}
})
.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
progressDialog.dismiss();
Toast.makeText(getActivity(), e.getMessage(), Toast.LENGTH_SHORT).show();
}
});
}
private void memilih() {
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.TITLE, "Temp Pic");
values.put(MediaStore.Images.Media.DESCRIPTION, "Temp Description");
image_uri = getActivity().getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
Intent camerai = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
camerai.putExtra(MediaStore.EXTRA_OUTPUT, image_uri);
startActivityForResult(camerai, IMAGE_PICK_CAMERA_CODE);
}
private void memilihgal() {
Intent gall = new Intent(Intent.ACTION_PICK);
gall.setType("image/*");
startActivityForResult(gall, IMAGE_PICK_GALLERY_CODE);
}
}
推荐答案
获取下载URL的方式看起来很糟糕.在您的Android代码中使用任何while (!uriTask.isSuccessful());都不可能获得预期的结果.
The way you're getting the download URL looks fishy. Having any sort of while (!uriTask.isSuccessful()); in your Android code is unlikely to ever give the desired result.
这是我将其标准化的方式:
This is how I'd normalize it:
String file = storagePath+ ""+ profilorcover +"_"+ user.getUid();
StorageReference storageReference2 = storageReference.child(file);
storageReference2.putFile(uri).continueWithTask(new Continuation<UploadTask.TaskSnapshot, Task<Uri>>() {
@Override
public Task<Uri> then(@NonNull Task<UploadTask.TaskSnapshot> task) throws Exception {
if (!task.isSuccessful()) {
throw task.getException();
}
// Continue with the task to get the download URL
return ref.getDownloadUrl();
}
}).addOnCompleteListener(new OnCompleteListener<Uri>() {
@Override
public void onComplete(@NonNull Task<Uri> task) {
if (task.isSuccessful()) {
Uri downloadUri = task.getResult();
HashMap<String, Object> results = new HashMap<>();
results.put(profilorcover, downloaduri.toString());
databaseReference.child(user.getUid()).updateChildren(results)
.addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid) {
progressDialog.dismiss();
Toast.makeText(getActivity(), "Mengubah Gambar...", Toast.LENGTH_SHORT).show();
}
}
});
} else {
progressDialog.dismiss();
Toast.makeText(getActivity(), e.getMessage(), Toast.LENGTH_SHORT).show();
}
}
});
这是您的代码与在上传图片后获取下载网址.
这篇关于无法将图像上传到App和Firebase Android Studio的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！