안드로이드 앱 - 버튼 클릭 이벤트 처리 두 가지 방법

버튼 클릭 이벤트 처리 두 가지

1. Button의 setOnClickListener() 사용

2. Button의 onClick 속성에 method 지정하기

	<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
	android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
	android:paddingRight="@dimen/activity_horizontal_margin"
	android:paddingTop="@dimen/activity_vertical_margin"
	android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity"
	android:orientation="vertical">
	<TextView android:text="@string/hello_world" android:layout_width="wrap_content"
	android:layout_height="wrap_content" />
	<Button
	android:id="@+id/button_1"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:text="@string/button1_text"/> <!-- 1. -->
	<Button
	android:id="@+id/button_2"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:text="@string/button2_text"
	android:onClick="button2_onclick"/> <!-- 2. -->
	</LinearLayout>

view raw activity_main.xml hosted with ❤ by GitHub

	public class MainActivity extends AppCompatActivity {
	@Override
	protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_main);
	android.support.v7.app.ActionBar actionbar = getSupportActionBar();
	if (actionbar != null) {
	actionbar.setDisplayShowHomeEnabled(true);
	actionbar.setIcon(R.mipmap.ic_launcher);
	}
	Button button1 = (Button)findViewById(R.id.button_1);
	button1.setOnClickListener(new View.OnClickListener() { // 1.
	@Override
	public void onClick(View v) {
	Toast.makeText(getApplicationContext(), R.string.button_press_msg,
	Toast.LENGTH_SHORT).show();
	}
	});
	}
	public void button2_onclick(View v) { // 2.
	Toast.makeText(getApplicationContext(), R.string.button_press_msg,
	Toast.LENGTH_SHORT).show();
	}
	}

view raw MainActivity.java hosted with ❤ by GitHub