• 继承自UIViewController
• IOS9.0之后正式取代UIActionsheet与UIAlertview

UIAlertController简单使用

UIAlertController *controller = [UIAlertController alertControllerWithTitle:nil message:nil preferredStyle:UIAlertControllerStyleActionSheet];

[controller addAction:[UIAlertAction actionWithTitle:@"收藏" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
    NSLog(@"点击了[收藏]按钮");
}]];

[controller addAction:[UIAlertAction actionWithTitle:@"举报" style:UIAlertActionStyleDestructive handler:^(UIAlertAction * _Nonnull action) {
    NSLog(@"点击了[举报]按钮");
}]];

[controller addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
    NSLog(@"点击了[取消]按钮");
}]];

//    [controller addTextFieldWithConfigurationHandler:^(UITextField * _Nonnull textField) {
//        textField.textColor = [UIColor redColor];
//    }];

// 需要弹出控制器
[self.window.rootViewController presentViewController:controller animated:YES completion:nil];

UIAlertControllerStyleActionSheet实现指示器

• 效果同UIActionsheet
• 不可以加文本框

  /**
   *  UIAlertController的使用:UIAlertControllerStyleActionSheet
   */
  - (void)useAlertController2
  {
      UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"警告" message:@"确定要删除它？" preferredStyle:UIAlertControllerStyleActionSheet];
      // 添加按钮
      UIAlertAction *sure = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDestructive handler:^(UIAlertAction *action) {
          NSLog(@"点击了【确定】按钮");
      }];
      [alertController addAction:sure];
      [alertController addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
          NSLog(@"点击了【取消】按钮");
      }]];
      [alertController addAction:[UIAlertAction actionWithTitle:@"随便" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
          NSLog(@"点击了【随便】按钮");
      }]];
      // 在当前控制器上面弹出另一个控制器：alertController
      [self presentViewController:alertController animated:YES completion:nil];
  }
  

UIAlertControllerStyleAlert实现指示器效果

• 效果同UIAlertview

  /**
   *  UIAlertController的使用:UIAlertControllerStyleAlert
   */
  - (void)useAlertController
  {
      UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"警告" message:@"确定要删除它？" preferredStyle:UIAlertControllerStyleAlert];
  
      // 添加按钮
      UIAlertAction *sure = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDestructive handler:^(UIAlertAction *action) {
          NSLog(@"点击了【确定】按钮");
      }];
      [alertController addAction:sure];
  
      [alertController addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
          NSLog(@"点击了【取消】按钮");
      }]];
  
      // 添加文本框
      [alertController addTextFieldWithConfigurationHandler:^(UITextField *textField) {
          textField.textColor = [UIColor redColor];
          textField.secureTextEntry = YES; // 暗文
          textField.placeholder = @"请输入密码";
      }];
  
      // 在当前控制器上面弹出另一个控制器：alertController
      [self presentViewController:alertController animated:YES completion:nil];
  }
  

SVProgressHUD实现指示器效果

• SVProgressHUD控件使用

• SVProgressHUD使用简单示例

  /**
   *  SVProgressHUD
   */
  - (void)sv
  {
      // 下面这些消息需要主动调用dismiss方法来隐藏
  //    [SVProgressHUD show];
  //    [SVProgressHUD showWithMaskType:SVProgressHUDMaskTypeBlack]; // 增加灰色蒙板
  //    [SVProgressHUD showWithStatus:@"正在加载中..."];
  
      // 下面这些消息会自动消失
  //    [SVProgressHUD showInfoWithStatus:@"数据加载完毕！"];
  //    [SVProgressHUD showSuccessWithStatus:@"成功加载到4条新数据！"];
      [SVProgressHUD showErrorWithStatus:@"网络错误，请稍等！"];
  
      // 延迟2秒后做一些事情
  //    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
  //        [SVProgressHUD dismiss];
  //    });
  }
  

MBProgressHUD实现指示器效果

• MBProgressHUD源码解释
• MBProgressHUD功能扩展
• MBProgressHUD使用简单示例

  //计时器配合加载效果
  - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
  {
      [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(changeProgress) userInfo:nil repeats:YES];
  }
  
  double progress = 0.0;
  - (void)changeProgress
  {
      progress += 0.1;
      [SVProgressHUD showProgress:progress status:[NSString stringWithFormat:@"已下载%.0f%%", progress * 100]];
  }
  
  /**
   *  MBProgressHUD
   */
  - (void)mb
  {
      MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
      hud.labelText = @"正在加载中";
      hud.removeFromSuperViewOnHide = YES;
  
      dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
          [hud hide:YES];
      });
      //    [hud hide:YES afterDelay:2.0];
  }