loadRewardAd static method
加载激励广告 加载失败会返回空字符串
Implementation
static Future<String> loadRewardAd(GromoreRewardConfig config) async {
assert(isInit);
try {
String result =
await _methodChannel.invokeMethod("loadRewardAd", config.toJson());
return result;
} catch (err) {
return "";
}
}