【Applicaiton】全局变量Applicaiton简单实例

public class MyApp extends Application {

private String myState;

public String getState() {

return myState;

}

public void setState(String s) {

myState = s;

}

}

public class Blah extends Activity {

@Override

public void onCreate(Bundle b){

...

MyApp appState = ((MyApp)getApplicationContext());

String state = appState.getState();

...

}

}

<application android:name=".MyApp" android:icon="@drawable/icon"

android:label="@string/app_name">

<activity android:name=".ClickableListItemActivity"

android:label="@string/app_name">

<intent-filter>

<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />

</intent-filter>

</activity>

</application>