/**
* 获取本地版本号
* @return int locationVersionCode
* 如果没有获取到包名,则返回 -1
*/
private int getLocationVersionCode(){
PackageManager manager = getPackageManager();
try {
PackageInfo info = manager.getPackageInfo(getPackageName(),0);
int locationVersionCode = info.versionCode;
return locationVersionCode;
} catch (PackageManager.NameNotFoundException e) {
// 没有找到包名的时候会走此异常
e.printStackTrace();
}
return -1;
}