안드로이드 튜토리얼

액티비티 띄우기

버튼 클릭 이벤트 처리

xmlCopy
<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/button_send"
    android:onClick="sendMessage" />

javaCopy
/** Called when the user clicks the Send button */
public void sendMessage(View view) {
    // Do something in response to button
}

IntelliJ Tip

• Local History로 복원하기
• VCS Commit

Action Bar

Feature

• 앱 아이콘
• 타이틀
• 드랍다운 메뉴

Set up

3.0 이상

• Theme.Holo 또는 상속받은 테마
• minSdkVersion, targetSdkVersion 이 11 이상

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<manifest ... >
    <uses-sdk android:minSdkVersion="11" ... />
    ...
</manifest>

2.1 이상

• Android Support Library 필요
• ActionBarActivity 상속

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public class MainActivity extends ActionBarActivity { ... }

• AppCompat 테마

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<activity android:theme="@style/Theme.AppCompat.Light" ... >

• minSdkVersion은 7 이상

xmlCopy
<manifest ... >
    <uses-sdk android:minSdkVersion="7"  android:targetSdkVersion="18" />
    ...
</manifest>

Action Button 추가

Actions을 XML로 정하기

• res/menu/main_activity_actions.xml

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<menu xmlns:android="http://schemas.android.com/apk/res/android" >
    <!-- Search, should appear as action button -->
    <item android:id="@+id/action_search"
          android:icon="@drawable/ic_action_search"
          android:title="@string/action_search"
          android:showAsAction="ifRoom" />
    <!-- Settings, should always be in the overflow -->
    <item android:id="@+id/action_settings"
          android:title="@string/action_settings"
          android:showAsAction="never" />
</menu>

Action Bar 스타일링