Android之读取 AndroidManifest.xml 中的数据

转：http://www.2cto.com/kf/201208/151123.html

下来示例如何读取这些数据。

1 版本信息、应用名称

2 Appliction 的Meta-data

3 Activity中的Meta-data

AndroidManifest.xml中的定义如下：

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="hpc.cai.test01"
    android:versionCode="1"
    android:versionName="1.0" >
    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <meta-data
            android:name="tel"
            android:value="cdma-13366350377" >
        </meta-data>
        <meta-data
            android:name="channel"
            android:value="eben" />
        <activity
            android:name="hpc.cai.test.Test1Activity"
            android:label="@string/app_name" >
            <meta-data
                android:name="name"
                android:value="自强不息" >
            </meta-data>
            <meta-data
                android:name="city"
                android:value="北京" />
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

java 代码：

 /**
     * activity MetaData读取
     */
    private void testActivityMetaData() {
        ActivityInfo info;
        try {
            info = getPackageManager().getActivityInfo(getComponentName(),
                    PackageManager.GET_META_DATA);
            String msg = info.metaData.getString("name");
            System.out.println("name:" + msg);
            msg = info.metaData.getString("city");
            System.out.println("city:" + msg);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
    /**
     * appliction MetaData读取
     */
    private void testApplicationMetaData() {
        ApplicationInfo info;
        try {
            info = this.getPackageManager().getApplicationInfo(
                    getPackageName(), PackageManager.GET_META_DATA);
            String msg = info.metaData.getString("tel");
            System.out.println("tel:" + msg);
            msg = info.metaData.getString("channel");
            System.out.println("channel:" + msg);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
    /**
     * 测试版本信息
     */www.2cto.com
    private void getVersion(){
        PackageInfo pkg;
        try {
            pkg = getPackageManager().getPackageInfo(getApplication().getPackageName(), 0);
            String appName = pkg.applicationInfo.loadLabel(getPackageManager()).toString();
            String versionName = pkg.versionName;
            System.out.println("appName:" + appName);
            System.out.println("versionName:" + versionName);
        } catch (NameNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
     }

输出如下：

16:37:54.442: I/System.out(10213): appName:Test1
16:37:54.442: I/System.out(10213): versionName:1.0
16:37:54.442: I/System.out(10213): tel:cdma-13366350377
16:37:54.442: I/System.out(10213): channel:eben
16:37:54.452: I/System.out(10213): name:自强不息
16:37:54.452: I/System.out(10213): city:北京