android studio App获取版本信息

//版本名public static String getVersionName(Context context) {    return getPackageInfo(context).versionName;}//版本号public static int getVersionCode(Context context) {    return getPackageInfo(context).versionCode;}//获取版本infoprivate static PackageInfo getPackageInfo(Context context) {    PackageInfo pi = null;    try {        PackageManager pm = context.getPackageManager();        pi = pm.getPackageInfo(context.getPackageName(),                PackageManager.GET_CONFIGURATIONS);        return pi;    } catch (Exception e) {        e.printStackTrace();    }    return pi;}