Android中meta-data的使用示例

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:
 * 测试meta-data的使用
 * 
 * Activity的meta-data为:
 * <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="测试meta-data的使用"
        android:layout_centerInParent="true" />

</RelativeLayout>