app实现外部浏览器打开链接

public static void openPDFInBrowser(Context context, String url) {
        Uri uri = Uri.parse(url);
        Intent intent = new Intent(Intent.ACTION_VIEW, uri);
        intent.putExtra(Browser.EXTRA_APPLICATION_ID, context.getPackageName());
        try {
            context.startActivity(intent);
        } catch (ActivityNotFoundException e) {
            Log.w("error", "Activity was not found for intent, " + intent.toString());
        }
    }

[[UIApplication sharedApplication]openURL:URL options:@{} completionHandler:^(BOOL success) {
 
}];
 
函数异步执行，在主队列中调用 completionHandler 中的回调。
参数：
openURL:打开的网址
options:用来校验url和applicationConfigure是否配置正确，是否可用。
        如果校验为不可用，completionHandler的回调success为NO。
        唯一可用@{UIApplicationOpenURLOptionUniversalLinksOnly:@YES}。
        不需要就用@{}为置空，不能直接置nil。
        置空将不会校验，completionHandler的回调success恒为YES。
ompletionHandler:如不需要可置nil

 _download(){
      const that = this;
      const {voucherNo,unionid,custId} = this;
      const baseUrl = config.BASE_API;
      const url = `/api/wx/down/voucherDetailByB001?voucherId=${voucherNo}&unionId=${unionid}`;
      const downUrl = baseUrl + url;
      this.isLoading = true;
      this.loadingText = "下载中";
      this.$JQAPI('saveFile', {
        param: {url: downUrl, suffix: 'pdf' },
        successCallBack: function (res) {
          that.isLoading = false;
          const result = JSON.parse(res);
          console.log(result);
          if (result && result.code == 200) {
            const data = result.data;
            console.log(data);
            Toast({message:`文件已保存至${data}文件夹`,position: 'bottom',duration: 5000});      
          } else {
            that.$toast(result.msg);
          }
        },
        failedCallBack: function (err) {
          console.log(err)
          that.$toast(err);
          that.isLoading = false;
        }
      });