Question

如果在我的onStart（）上单击一个按钮来检查点击的按钮是注册还是登录，如何设置if else语句？

这是我的代码

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

在课堂上创建一个字段。例如int clickedButton;

在onStart（）中使用该字段检查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);

}

Android onStart如果点击按钮

1 个答案: