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//1、调用 自带mail [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"mailto://admin@CodeSnippet.cn"]]; //2、调用 电话phone [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel://8008808888"]]; //3、调用 SMS [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"sms://800888"]]; //4、调用自带 浏览器 safari [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://outofmemory.cn