Android 获取版本号，版本，Meta-Data

获取版本号

public static int getVersionCode(Context context) {
            PackageManager pManager = context.getPackageManager();
            PackageInfo packageInfo = null;
            try {
                packageInfo = pManager.getPackageInfo(context.getPackageName(), 0);

            } catch (PackageManager.NameNotFoundException e) {
                e.printStackTrace();
            }
            return packageInfo.versionCode;
        }

获取版本

public static String getVersionName(Context context) {
            PackageManager pManager = context.getPackageManager();
            PackageInfo packageInfo = null;
            try {
                packageInfo = pManager.getPackageInfo(context.getPackageName(), 0);
            } catch (PackageManager.NameNotFoundException e) {
                e.printStackTrace();
            }
            return packageInfo.versionName;
        }

获取Meta-Data

public static String getAppMetaData(Context context, String key) {
            if (context == null || TextUtils.isEmpty(key)) {
                return null;
            }
            String resultData = null;
            try {
                PackageManager packageManager = context.getPackageManager();
                if (packageManager != null) {
                    ApplicationInfo applicationInfo = packageManager.getApplicationInfo(context.getPackageName(), PackageManager.GET_META_DATA);
                    if (applicationInfo != null) {
                        if (applicationInfo.metaData != null) {
                            resultData = applicationInfo.metaData.getString(key);
                        }
                    }

                }
            } catch (PackageManager.NameNotFoundException e) {
                e.printStackTrace();
            }

            return resultData;
        }