在android中以编程方式获取应用程序版本

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

try {
    PackageManager packageManager = getPackageManager();
    PackageInfo packageInfo = packageManager.getPackageInfo(getPackageName(), 0);
    int versionCode = packageInfo.versionCode;
    String versionName = packageInfo.versionName;
    String packageName = packageInfo.packageName;
    String appName = packageManager.getApplicationLabel(packageManager.getApplicationInfo(packageName, PackageManager.GET_META_DATA)).toString();
    String appVersion = "应用名称：" + appName + "\n版本名称：" + versionName + "\n版本号：" + versionCode;
    Log.d("APP_VERSION", appVersion);
} catch (PackageManager.NameNotFoundException e) {
    e.printStackTrace();
}