我已经研究了多个主题，但无法解决此问题。当我尝试运行该应用程序时，发生以下错误：
CadastroActivity.java:5862: error: cannot find symbol
download_uri = task.getResult().getDownloadUrl();
^
symbol: method getDownloadUrl()
location: class UploadTask.TaskSnapshot
我的活动：
package com.dc.clubedoprofissional;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import de.hdodenhof.circleimageview.CircleImageView;
import id.zelory.compressor.Compressor;
import in.galaxyofandroid.spinerdialog.OnSpinerItemClick;
import in.galaxyofandroid.spinerdialog.SpinnerDialog;
import android.Manifest;
import android.annotation.SuppressLint;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;
import com.bumptech.glide.Glide;
import com.bumptech.glide.request.RequestOptions;
import com.github.hamzaahmedkhan.spinnerdialog.SpinnerDialogFragment;
import com.github.rtoshiro.util.format.SimpleMaskFormatter;
import com.github.rtoshiro.util.format.text.MaskTextWatcher;
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.firestore.DocumentSnapshot;
import com.google.firebase.firestore.FirebaseFirestore;
import com.google.firebase.storage.FirebaseStorage;
import com.google.firebase.storage.StorageReference;
import com.google.firebase.storage.UploadTask;
import com.theartofdev.edmodo.cropper.CropImage;
import com.theartofdev.edmodo.cropper.CropImageView;
import com.toptoche.searchablespinnerlibrary.SearchableSpinner;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import static java.security.AccessController.getContext;
public class CadastroActivity extends AppCompatActivity {private EditText cadCelular;
private EditText cadNome;
private EditText cadCidade;
private Uri mainImageURI = null;
private Bitmap compressedImageFile;
private CircleImageView imgFoto;
private Boolean mudou = false;
private Button cadSalvar;
private ProgressBar progressBarCadastro;
private FirebaseAuth mAuth;
private StorageReference storageReference;
private FirebaseFirestore firebaseFirestore;
private String user_id;
private String compara_usuario;
private Toolbar barra_cadastro;
private SpinnerDialog spinnerCidade;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_cadastro);
progressBarCadastro = (ProgressBar) findViewById(R.id.reg_progress);
cadCelular = (EditText) findViewById(R.id.cad_celular);
cadNome = (EditText) findViewById(R.id.cad_nome);
cadSalvar = (Button) findViewById(R.id.reg_btn);
cadCidade = (EditText) findViewById(R.id.cad_cidade);
Toolbar barra_cadastro = findViewById(R.id.barraCadastro);
setSupportActionBar(barra_cadastro);
getSupportActionBar().setTitle("Cadastro");
getSupportActionBar().setDisplayShowHomeEnabled(true);
//Máscara do número de celular
SimpleMaskFormatter mascara = new SimpleMaskFormatter("(NN) NNNNN-NNNN");
MaskTextWatcher mtww = new MaskTextWatcher(cadCelular,mascara);
cadCelular.addTextChangedListener(mtww);
imgFoto = (CircleImageView) findViewById(R.id.img_foto);
mAuth = FirebaseAuth.getInstance();
user_id = mAuth.getCurrentUser().getUid();
storageReference = FirebaseStorage.getInstance().getReference();
firebaseFirestore = FirebaseFirestore.getInstance();
//progressBarCadastro.setVisibility(View.VISIBLE);
//cadSalvar.setEnabled(false);
firebaseFirestore.collection("Usuarios").document(user_id).get().addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {
@Override
public void onComplete(@NonNull Task<DocumentSnapshot> task) {
if(task.isSuccessful()){
if(task.getResult().exists()){
String nome = task.getResult().getString("nome");
String cidade = task.getResult().getString("cidade");
String celular = task.getResult().getString("celular");
String image = task.getResult().getString("image");
mainImageURI = Uri.parse(image);
cadNome.setText(nome);
cadCelular.setText(celular);
cadCidade.setText(cidade);
RequestOptions placeholderRequest = new RequestOptions();
placeholderRequest.placeholder(R.drawable.img_pessoa_foto);
Glide.with(CadastroActivity.this).load(image).into(imgFoto);
}
} else {
if(getIntent().hasExtra("celular")){
Bundle extras = getIntent().getExtras();
cadCelular.setText(extras.getString("celular"));
}
String error = task.getException().getMessage();
Toast.makeText(CadastroActivity.this, "(Erro ao carregar os dados...) : " + error, Toast.LENGTH_LONG).show();
}
progressBarCadastro.setVisibility(View.INVISIBLE);
cadSalvar.setEnabled(true);
}
});
cadSalvar.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final String m_nome = cadNome.getText().toString();
final String m_celular = cadCelular.getText().toString();
final String m_cidade = cadCidade.getText().toString();
if (!TextUtils.isEmpty(m_nome) && mainImageURI != null) {
progressBarCadastro.setVisibility(View.VISIBLE);
if(mudou) {
final String user_id = mAuth.getCurrentUser().getUid();
File newImageFile = new File(mainImageURI.getPath());
try {
compressedImageFile = new Compressor(CadastroActivity.this)
.setMaxHeight(125)
.setMaxWidth(125)
.setQuality(50)
.compressToBitmap(newImageFile);
} catch (IOException e) {
e.printStackTrace();
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
compressedImageFile.compress(Bitmap.CompressFormat.JPEG, 100, baos);
byte[] thumbData = baos.toByteArray();
final UploadTask image_path = storageReference.child("perfil_imagens").child(user_id + ".jpg").putBytes(thumbData);
image_path.addOnCompleteListener(new OnCompleteListener<UploadTask.TaskSnapshot>() {
@Override
public void onComplete(@NonNull Task<UploadTask.TaskSnapshot> task) {
if (task.isSuccessful()) {
storeFirestore(task, m_nome, m_celular, m_cidade);
} else {
String error = task.getException().getMessage();
Toast.makeText(CadastroActivity.this, "(IMAGE Error) : " + error, Toast.LENGTH_LONG).show();
progressBarCadastro.setVisibility(View.INVISIBLE);
}
}
});
} else{
storeFirestore(null,m_nome,m_celular,m_cidade);
}
}
}
});
imgFoto.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){
if(ContextCompat.checkSelfPermission(CadastroActivity.this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED){
Toast.makeText(CadastroActivity.this, "Necessário permissão", Toast.LENGTH_LONG).show();
ActivityCompat.requestPermissions(CadastroActivity.this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, 1);
} else {
BringImagePicker();
}
} else {
BringImagePicker();
}
}
});
}
private void storeFirestore(@NonNull Task<UploadTask.TaskSnapshot> task, String m_nome, String m_celular, String m_cidade) {
Uri download_uri;
if(task != null && m_nome !=null && m_celular != null && m_cidade != null) {
download_uri = task.getResult().getDownloadUrl();
} else {
download_uri = mainImageURI;
}
Map<String, String> userMap = new HashMap<>();
userMap.put("nome", m_nome);
userMap.put("celular", m_celular);
userMap.put("cidade", m_cidade);
userMap.put("image", download_uri.toString());
firebaseFirestore.collection("Usuarios").document(user_id).set(userMap).addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
if (task.isSuccessful()) {
Toast.makeText(CadastroActivity.this, "Salvo com sucesso...", Toast.LENGTH_SHORT).show();
vaiProInicio();
} else {
String erro = task.getException().getMessage();
Toast.makeText(CadastroActivity.this, "Erro: " + erro, Toast.LENGTH_SHORT).show();
}
progressBarCadastro.setVisibility(View.INVISIBLE);
}
});
}
@Override
protected void onStart() {
super.onStart();
FirebaseUser currentUser = mAuth.getCurrentUser();
if(currentUser == null){
vaiProInicio();
}
}
private void vaiProInicio() {
Intent inicio = new Intent(CadastroActivity.this,MainActivity.class);
startActivity(inicio);
finish();
}
private void BringImagePicker() {
CropImage.activity()
.setGuidelines(CropImageView.Guidelines.ON)
.setAspectRatio(1, 1)
.start(CadastroActivity.this);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE) {
CropImage.ActivityResult result = CropImage.getActivityResult(data);
if (resultCode == RESULT_OK) {
mainImageURI = result.getUri();
imgFoto.setImageURI(mainImageURI);
mudou = true;
} else if (resultCode == CropImage.CROP_IMAGE_ACTIVITY_RESULT_ERROR_CODE) {
Exception error = result.getError();
}
}
}
}
我在build.gradle中使用它：
implementation 'com.google.firebase:firebase-storage:19.1.1'