針對具有系統簽名許可權的APK（系統運用）要實現對其它第三方APK靜默安裝可用如下程式碼實現

1、manifest中許可權申請

<uses-permission android:name="android.permission.INSTALL_PACKAGES" />   

2、實現方法

public void installSilent(Context context, String filePath) {
    if (filePath == null || filePath.length() == 0) {
        return ;
    }
    File file = new File(filePath);
    if (file == null || file.length() <= 0 || !file.exists() || !file.isFile()) {
        return ;
    }
    int installFlags = 0;
    Uri packageUri = Uri.fromFile(file);//file是要安裝的apk檔案
    PackageManager pm = context.getPackageManager();
    installFlags |= PackageManager.INSTALL_REPLACE_EXISTING;
    MyPackageInstallObserver observer = new MyPackageInstallObserver();
    pm.installPackage(packageUri, observer, installFlags, null);
}
 

3、安裝狀態回撥

private static class MyPackageInstallObserver implements IPackageInstallObserver {
    @Override
    public IBinder asBinder() {
        // TODO Auto-generated method stub
        return null;
    }
    @Override
    public void packageInstalled(String arg0, int arg1)
            throws RemoteException {
        // TODO Auto-generated method stub
    }
}