上次说到了网络请求AFN,那么我们在网络请求的时候,等待期间,为了让用户不认为是卡死或程序出错,一般都会放一个菊花加载,系统有一个菊花加载类叫UIProgressHUD.但是我今天要说的是一个替代它的第三方,叫做:MBProgressHUD.MBProgressHUD不光加载效果多,而且使用简单,便捷.github上有下载地址

下载地址是： http://github.com/matej/MBProgressHUD

先下载MBProgressHUD.h和.m文件，拖入工程。

以下是代码：（先在.h文件里定义 MBProgressHUD *HUD;）

//方式1.直接在View上show

HUD = [[MBProgressHUD showHUDAddedTo:self.view animated:YES] retain];

HUD.delegate = self;  

//常用的设置

//小矩形的背景色

HUD.color = [UIColor clearColor];//这儿表示无背景

//显示的文字

HUD.labelText = @"Test";

//细节文字

HUD.detailsLabelText = @"Test detail";

//是否有庶罩

HUD.dimBackground = YES;

[HUD hide:YES afterDelay:2];  

//只显示文字

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

hud.mode = MBProgressHUDModeText;

hud.labelText = @"Some message...";

hud.margin = 10.f;

hud.yOffset = 150.f;

hud.removeFromSuperViewOnHide = YES;

[hud hide:YES afterDelay:3];  

//方式2.initWithView

//use block

HUD = [[MBProgressHUD alloc] initWithView:self.view];

[self.view addSubview:HUD];

HUD.labelText = @"Test";

[HUD showAnimated:YES whileExecutingBlock:^{

    NSLog(@"%@",@"do somethings....");

    [self doTask];

} completionBlock:^{

    [HUD removeFromSuperview];

    [HUD release];

}];  

//圆形进度条

HUD = [[MBProgressHUD alloc] initWithView:self.view];

[self.view addSubview:HUD];

HUD.mode = MBProgressHUDModeAnnularDeterminate;

HUD.delegate = self;

HUD.labelText = @"Loading";

[HUD showWhileExecuting:@selector(myProgressTask) onTarget:self withObject:nil animated:YES];  

//自定义view

HUD = [[MBProgressHUD alloc] initWithView:self.view];

HUD.customView = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"37x-Checkmark.png"]] autorelease];

// Set custom view mode

HUD.mode = MBProgressHUDModeCustomView;

HUD.delegate = self;

HUD.labelText = @"Completed";

[HUD show:YES];

[HUD hide:YES afterDelay:3]; 

需要注意的是,MBprogressHUD的代理方法

#pragma mark HUD的代理方法,关闭HUD时执行

-(void)hudWasHidden:(MBProgressHUD *)hud

{

    [hud removeFromSuperview];

    [hud release];

    hud = nil;

}