如何獲取firebase中的updateprofile工作？

Question

我想讓用戶在創建ID時添加一個顯示名稱。

我已經爲用戶設置了第一個屏幕上的ID，然後當您點擊下一個時創建ID，然後它進入更新配置文件頁面以更新顯示名稱。

我得到了一切工作，但當我介紹第二個更新頁面時，它導致崩潰，當我被引導到該頁面。

註冊頁面

import android.app.ProgressDialog; 
import android.content.Intent; 
import android.support.annotation.NonNull; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.text.TextUtils; 
import android.view.View; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.TextView; 
import android.widget.Toast; 

import com.google.android.gms.tasks.OnCompleteListener; 
import com.google.android.gms.tasks.Task; 
import com.google.firebase.auth.AuthResult; 
import com.google.firebase.auth.FirebaseAuth; 
import com.google.firebase.auth.FirebaseUser; 
import com.google.firebase.auth.UserProfileChangeRequest; 

public class signup extends AppCompatActivity implements View.OnClickListener { 

    //defining view objects 
    private EditText editTextEmail; 
    private EditText editTextPassword; 
// private EditText editTextName; 
    private Button buttonSignup; 

    private TextView textViewSignin; 

    private ProgressDialog progressDialog; 


    //defining firebaseauth object 
    private FirebaseAuth firebaseAuth; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_signup); 

     //initializing firebase auth object 
     firebaseAuth = FirebaseAuth.getInstance(); 

     //if getCurrentUser does not returns null 
     if(firebaseAuth.getCurrentUser() != null){ 
      //that means user is already logged in 
      //so close this activity 
      finish(); 

      //and open profile activity 
      startActivity(new Intent(getApplicationContext(), profile.class)); 
     } 

     //initializing views 
     editTextEmail = (EditText) findViewById(R.id.editTextEmail); 
     editTextPassword = (EditText) findViewById(R.id.editTextPassword); 
     textViewSignin = (TextView) findViewById(R.id.textViewSignin); 
     // editTextName = (EditText) findViewById(R.id.editTextName); 

     buttonSignup = (Button) findViewById(R.id.buttonSignup); 

     progressDialog = new ProgressDialog(this); 

     //attaching listener to button 
     buttonSignup.setOnClickListener(this); 
     textViewSignin.setOnClickListener(this); 
    } 

    private void registerUser(){ 

     //getting email and password from edit texts 
     String email = editTextEmail.getText().toString().trim(); 
     String password = editTextPassword.getText().toString().trim(); 

     //checking if email and passwords are empty 
     if(TextUtils.isEmpty(email)){ 
      Toast.makeText(this,"Please enter email",Toast.LENGTH_LONG).show(); 
      return; 
     } 

     if(TextUtils.isEmpty(password)){ 
      Toast.makeText(this,"Please enter password",Toast.LENGTH_LONG).show(); 
      return; 
     } 

     //if the email and password are not empty 
     //displaying a progress dialog 

     progressDialog.setMessage("Working Please Wait..."); 
     progressDialog.show(); 

     //creating a new user 
     firebaseAuth.createUserWithEmailAndPassword(email, password) 
       .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() { 
        @Override 
        public void onComplete(@NonNull Task<AuthResult> task) { 
         //checking if success 
         if(task.isSuccessful()){ 

          finish(); 

          startActivity(new Intent(getApplicationContext(), secondsignup.class)); 
     //     Toast.makeText(signup.this,"Registration Successful",Toast.LENGTH_SHORT).show(); 

         }else{ 
          //display some message here 
          Toast.makeText(signup.this,"Registration Error",Toast.LENGTH_LONG).show(); 
         } 
         progressDialog.dismiss(); 
        } 
       }); 

    } 

    @Override 
    public void onClick(View view) { 

     if(view == buttonSignup){ 
      registerUser(); 
     } 

     if(view == textViewSignin){ 
      //open login activity when user taps on the already registered textview 
      startActivity(new Intent(this, mainlogin.class)); 
     } 

    } 
} 

secondsignup頁

import android.content.Intent; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.text.TextUtils; 
import android.view.View; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.Toast; 
import android.view.View.OnClickListener; 
import com.google.android.gms.tasks.OnCompleteListener; 
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; 



public class secondsignup extends AppCompatActivity implements OnClickListener { 

    private EditText mUsername; 
    private Button mUpdateProfileBtn; 
    FirebaseUser mUser = FirebaseAuth.getInstance().getCurrentUser(); 
    FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser(); 


    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_secondsignup); 

     mUsername = (EditText) findViewById(R.id.editTextName); 
     mUpdateProfileBtn = (Button) findViewById(R.id.buttonSignin); 
     String username = user.getDisplayName(); 
     mUsername.setText(username); 

     mUpdateProfileBtn.setOnClickListener(this); 
    } 

    //  @Override 
    //  public void onClick(View v) { 
    private void updatename() { 
     //updating user's profile data 
     String nameUser = mUsername.getText().toString(); 
     UserProfileChangeRequest profileUpdate = new UserProfileChangeRequest.Builder() 
       .setDisplayName(nameUser) 
       .build(); 

     if (TextUtils.isEmpty(nameUser)) { 
      mUsername.setError("Enter your Full Name"); 
     } 

     //if the field is not null, process continue to update profile 
     else { 
      mUser.updateProfile(profileUpdate) 
        .addOnCompleteListener(new OnCompleteListener<Void>() { 
         @Override 
         public void onComplete(Task<Void> task) { 
          if (task.isSuccessful()) { //success on updating user profile 
           Toast.makeText(secondsignup.this, "Registration Successful", 
             Toast.LENGTH_SHORT).show(); 
           startActivity(new Intent(secondsignup.this, MainActivity.class)); 
          } else { //failed on updating user profile 
           Toast.makeText(secondsignup.this, "Registration Failed", 
             Toast.LENGTH_SHORT).show(); 
          } 
         } 
        }); 
     } 

    } 

    @Override 
    public void onClick(View view) { 

     if (view == mUpdateProfileBtn) { 
      updatename(); 
     } 


    } 
} 

Answer 1

只要改變你的onClick()方法這樣

@Override 
public void onClick(View view) { 

    if (view.getId == R.id.buttonSignin) { 
     updatename(); 
    } 
}