android 10 事件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <Button
        android:id="@+id/btnLogin"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="登陸" 
        android:onClick="onClick"/>

</RelativeLayout>

package com.sxt.day03_03;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity {
    Button mbtnLogin;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
        
        setListener();//設定監聽器
    }

    private void setListener() {
        //預存一段按鈕點選事件的響應程式碼
        mbtnLogin.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.i("main","執行登陸操作");
            }
        });
    }

    private void initView() {
        mbtnLogin=(Button) findViewById(R.id.btnLogin);
    }
}