iOS 拨打电话优化

最近在测试项目发现项目中调用电话的在iOS 10上会出现卡顿,点击调用会有一小段延,现在是这样实现拨打电话的:

NSMutableString *str=[[NSMutableString alloc] initWithFormat:@"tel:%@",_phoneNum];
UIWebView *callWebview = [[UIWebView alloc] init];
[callWebview loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:str]]];
[self.view addSubview:callWebview];

优化如下:

• (void)callPhoneStr:(NSString*)phoneStr withVC:(UIViewController *)selfvc{
  NSString *str2 = [[UIDevice currentDevice] systemVersion];

  if ([str2 compare:@"10.2" options:NSNumericSearch] == NSOrderedDescending || [str2 compare:@"10.2" options:NSNumericSearch] == NSOrderedSame)
  {
  NSLog(@">=10.2");
  NSString* PhoneStr = [NSString stringWithFormat:@"tel://%@",phoneStr];
  if ([PhoneStr hasPrefix:@"sms:"] || [PhoneStr hasPrefix:@"tel:"]) {
  UIApplication * app = [UIApplication sharedApplication];
  if ([app canOpenURL:[NSURL URLWithString:PhoneStr]]) {
  [app openURL:[NSURL URLWithString:PhoneStr]];
  }
  }
  }else {
  NSMutableString* str1 = [[NSMutableString alloc]initWithString:phoneStr];// 存在堆区，可变字符串
  if (phoneStr.length == 10) {
  [str1 insertString:@"-"atIndex:3];// 把一个字符串插入另一个字符串中的某一个位置
  [str1 insertString:@"-"atIndex:7];// 把一个字符串插入另一个字符串中的某一个位置
  }else {
  [str1 insertString:@"-"atIndex:3];// 把一个字符串插入另一个字符串中的某一个位置
  [str1 insertString:@"-"atIndex:8];// 把一个字符串插入另一个字符串中的某一个位置
  }
  NSString * str = [NSString stringWithFormat:@"是否拨打电话\n%@",str1];
  UIAlertController *alert = [UIAlertController alertControllerWithTitle:str message: nil preferredStyle:UIAlertControllerStyleAlert];
  // 设置popover指向的item
  alert.popoverPresentationController.barButtonItem = selfvc.navigationItem.leftBarButtonItem;
  // 添加按钮
  [alert addAction:[UIAlertAction actionWithTitle:@"呼叫" style:UIAlertActionStyleDestructive handler:^(UIAlertAction action) {
  NSLog(@"点击了呼叫按钮10.2下");
  NSString PhoneStr = [NSString stringWithFormat:@"tel://%@",phoneStr];
  if ([PhoneStr hasPrefix:@"sms:"] || [PhoneStr hasPrefix:@"tel:"]) {
  UIApplication * app = [UIApplication sharedApplication];
  if ([app canOpenURL:[NSURL URLWithString:PhoneStr]]) {
  [app openURL:[NSURL URLWithString:PhoneStr]];
  }
  }
  }]];
  [alert addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
  NSLog(@"点击了取消按钮");
  }]];
  [selfvc presentViewController:alert animated:YES completion:nil];
  }

}