以下为跳转到大众点评APP代码如下：

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NSString *requestUrlString = @"dianping://shopinfo?id=1000";        <br>NSURL *requestUrl = [NSURL URLWithString: requestUrlString];
        if([[UIApplication sharedApplication] canOpenURL:requestUrl]) {
            [[UIApplication sharedApplication] openURL:requestUrl];
        } else {
            //没有安装应用，默认打开HTML5站
            NSString *keywords = [@"吃饭饭" stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
            requestUrl = [NSURL URLWithString:[NSString stringWithFormat:@"http://m.dianping.com/shoplist/219/search?from=m_search&keyword=%@",keywords]];
            [[UIApplication sharedApplication] openURL:requestUrl];
        }

 跳转的过程中可能会出现ERROR：

error: "This app is not allowed to query for scheme dianping"

解决方法是在info.plist文件内添加以下配置项，将其列为白名单才可以正常检查是否已经安装此程序。

<key>LSApplicationQueriesSchemes</key>

<array>

        <string>weixin</string>

        <string>wechat</string>

        <string>dianping</string>

</array>