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等待指示器(3) -- 第三方MBProgressHUD

MBProgressHUD依赖的框架:Foundation.framework、UIKit.framework、CoreGraphics.framework。

1>MBProgressHUD类中获取MBProgressHUD对象方法:

// 创建MBProgressHUD对象添加到View视图中,并显示等待指示器

 + (MBProgressHUD *)showHUDAddedTo:(UIView *)view  animated:(BOOL )animated ;

// 从顶级视图的子视图中查找MBProgressHUD对象

+ (MBProgressHUD *)HUDForView:(UIView *)view;

2>MBProgressHUD中常用属性

mode:设定指示器显示的样式

labelText:设置等待指示器标签的内容

detailsLabelText:设置等待指示器详细标签内容

customView:设置自定义视图

 

- (void)startRequest

{

    // 初始化MBProgressHUD

    MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo: self.view animated :YES];

    hud.mode = MBProgressHUDModeCustomView;

    hud.labelText = @"Loading...";

    NSString *strUrl = [[NSString alloc] initWithFormat:@"http://iosbook3.com/service/mynotes/webservice.php?                      email=%@&type=%@&action=%@",@"ios_yaoxinchao@163.com",@"JSON",@"query"];   

    NSURL *url = [NSURL URLWithString:[strUrl URLEncodedString]];  

    __weak  ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];     

    [request setCompletionBlock:^{  // 设置成功完成时回调的Block

      NSData *data = http://www.mamicode.com/[request responseData];

      NSDictionary *resDict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];

      。。。。

      [MBProgressHUD hideHUDForView:self.view  animated:YES];

    }];

    [request setFailedBlock:^{  // 设置失败时回调的Block

      NSError *error = [request error];

      NSLog(@"%@",[error localizedDescription]);

      [MBProgressHUD hideHUDForView:self.view  animated:YES];

    }];

    [request startAsynchronous];
}