1)獲取AndroidManifest.xml中<meta-data>標籤中定義的值
public static int getVersionQuDao(Context context){
int qudao = 0;
try{
ApplicationInfo appInfo = context.getPackageManager().getApplicationInfo(context.getPackageName(), PackageManager.GET_META_DATA);
qudao = toInteger(appInfo.metaData.getString("qudao"));
}catch(NameNotFoundException e){
e.printStackTrace();
}
return qudao;
}