Android onStart如果點擊按鈕

Question

如果在我的onStart（）上點擊一個按鈕以檢查點擊的按鈕是註冊還是登錄，我該如何放置if else語句？

這裏是我的代碼

public void onClick(View v) { 
     switch (v.getId()) { 
      case R.id.register: 
       i = new Intent(this, RegisterCustomer.class); 
       startActivity(i); 
       finish(); 
       break; 
      case R.id.login: 
       final String email = memail.getText().toString(); 
       final String password = mpassword.getText().toString(); 
       mAuth.signInWithEmailAndPassword(email, password).addOnCompleteListener(CustomerLoginActivty.this, new OnCompleteListener<AuthResult>() { 
        @Override 
        public void onComplete(@NonNull Task<AuthResult> task) { 
         if (!task.isSuccessful()) { 
          Toast.makeText(CustomerLoginActivty.this, "sign in error", Toast.LENGTH_SHORT).show(); 
         } 
        } 
       }); 
       break; 
     } 
    } 

    @Override 
    protected void onStart() { 
     super.onStart(); 
     mAuth.addAuthStateListener(firebaseAuthListener); 
    } 

Answer 1

1. 類創建一個域。例如int clickedButton;

2. 在onStart（）檢查使用該字段的ID。

   int clickedButton; 
   
   public void onClick(View v) { 
       clickedButton = v.getId(); 
       switch (v.getId()) { 
       case R.id.register: 
        i = new Intent(this, RegisterCustomer.class); 
        startActivity(i); 
        finish(); 
        break; 
       case R.id.login: 
        final String email = memail.getText().toString(); 
        final String password = mpassword.getText().toString(); 
        mAuth.signInWithEmailAndPassword(email, password).addOnCompleteListener(CustomerLoginActivty.this, new OnCompleteListener <AuthResult>() {@Override 
         public void onComplete(@NonNull Task <AuthResult> task) { 
          if (!task.isSuccessful()) { 
           Toast.makeText(CustomerLoginActivty.this, "sign in error", Toast.LENGTH_SHORT).show(); 
          } 
         } 
        }); 
        break; 
       } 
   } 
   
   @Override 
   protected void onStart() { 
       super.onStart(); 
       if(clickedButton != null){ 
        switch (clickedButton) { 
        case R.id.register: 
        //do your thing 
        case R.id.login: 
        //do your thing 
        } 
       } 
   
       mAuth.addAuthStateListener(firebaseAuthListener); 
   
   }