Question

我如何编写每个按钮的完整代码，就像我为button1所做的那样？我想要从多个按钮调用相同的方法，如button1。

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

    Button one = (Button) findViewById(R.id.button1);
    one.setOnClickListener(this); // calling onClick() method

}

@Override
public void onClick(View v) {
    String phoneNumber = ((EditText) findViewById(R.id.editView4)).getText().toString();

    try {
        {
            SmsManager.getDefault().sendTextMessage(phoneNumber, null, "A", null, null);
        }

    } catch (Exception e) {
        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
        AlertDialog dialog = alertDialogBuilder.create();
        dialog.setMessage(e.getMessage());
        dialog.show();

    }
}


public void Openinformation(View view) {
    setContentView(R.layout.information);
}
}

Answer 1

您可以让按钮全部使用相同的OnClickListener，然后检查点击了哪个视图以确定要发送的消息

@Override
public void onClick(View v) {
    String phoneNumber = ((EditText) findViewById(R.id.editView4)).getText().toString();

    try {
        String message;
        if (v.getId() == R.id.button1) {
            message = "A";
        }
        else if (v.getId() == R.id.button2) {
            message = "B";
        }

        SmsManager.getDefault().sendTextMessage(phoneNumber, null, message, null, null);
    } catch (Exception e) {
        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
        AlertDialog dialog = alertDialogBuilder.create();
        dialog.setMessage(e.getMessage());
        dialog.show();

    }
}

Answer 2

您可以像对待其他按钮一样：

Button one = (Button) findViewById(R.id.button1);
one.setOnClickListener(this); // calling onClick() method
Button two = (Button) findViewById(R.id.button2);
two.setOnClickListener(this); // calling the same onClick()

从多个按钮调用相同的方法

2 个答案: