Android 获取包名，版本信息及VersionName名称
private String getAppInfo() { try { String pkName = this.getPackageName(); String versionName = this.getPackageManager().getPackageInfo( pkName, 0).versionName; int versionCode = this.getPackageManager() .getPackageInfo(pkName, 0).versionCode; return pkName + " " + versionName + " " + versionCode; } catch (Exception e) { } return null; }