Android中共享全局变量

Android中共享全局变量

public class MyApp extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
MyApplications appState = ((MyApplications) getApplicationContext());
System.out.println("appState.getState()________" + appState.getState());
}
}

import android.app.Application;

public class MyApplications extends Application {
private String myState = "hello from";

public String getState() {
return myState;
}

public void setState(String s) {
myState = s;
}
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.aa" android:versionCode="1" android:versionName="1.0">
<application android:name=".MyApplications" android:icon="@drawable/icon"
android:label="@string/app_name">
<activity android:name=".MyApp" 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>
</manifest>