在AndroidManifest中使用meta-data保存數據完整示例


MainActivity如下:

package cc.testmetadata;

import android.os.Bundle;
import android.app.Activity;
import android.content.ComponentName;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
/**
* Demo描述:
* 測試meta-data的使用
*
* Activity的meta-data為:
* <meta-data android:name="name" android:value="zxx"/>
* <meta-data android:name="number" android:value="9527"/>
* <meta-data android:name="country" android:resource="@string/location"/>
*
* 取得方式:
* String name=bundle.getString("name");
* int number=bundle.getInt("number");
* String country=getString(bundle.getInt("country"));
*/
public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
init();
}

private void init() {
try {
PackageManager packageManager = getPackageManager();
ComponentName componentName = new ComponentName(this,MainActivity.class);
ActivityInfo activityInfo = packageManager.getActivityInfo(componentName,PackageManager.GET_META_DATA);
Bundle bundle=activityInfo.metaData;
String name=bundle.getString("name");
int number=bundle.getInt("number");
String country=getString(bundle.getInt("country"));
System.out.println("name="+name+",number="+number+",country="+country);
} catch (Exception e) {
System.out.println(e.toString());
}

}


}


AndroidManifest.xml如下:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="cc.testmetadata"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
android:minSdkVersion="10"
android:targetSdkVersion="10" />

<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="cc.testmetadata.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>

<meta-data android:name="name" android:value="zxx"/>
<meta-data android:name="number" android:value="9527"/>
<meta-data android:name="country" android:resource="@string/location"/>

</activity>
</application>

</manifest>


main.xml如下:

<RelativeLayout 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"
>

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="測試meta-data的使用"
android:layout_centerInParent="true" />

</RelativeLayout>


 


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