MBProgressHUD

MBProgressHUD是一个开源项目，实现了很多种样式的提示框，使用上简单、方便，并且可以对显示的内容进行自定义，功能很强大，很多项目中都有使用到。到GitHub上可以下载到项目源码https://github.com/jdg/MBProgressHUD，下载下来后直接把MBProgressHUD.h和MBProgressHUD.m拖入工程中就行，别忘了选择拷贝到工程。完了在需要使用的地方导入头文件就可以开始使用了。首先看下工程截图：




接下来是整个Demo的完整界面，这里我只选择出了几个常用的对话框，其他样式的在源码提供的Demo里可以找到，要用的话直接参考就可以。




接下来直接上代码了，头文件部分：

[cpp] view
plaincopy

#import <UIKit/UIKit.h>

#import "MBProgressHUD.h"



@interface ViewController : UIViewController

{

//HUD（Head-Up Display，意思是抬头显示的意思）

MBProgressHUD *HUD;

}



- (IBAction)showTextDialog:(id)sender;

- (IBAction)showProgressDialog:(id)sender;

- (IBAction)showProgressDialog2:(id)sender;

- (IBAction)showCustomDialog:(id)sender;

- (IBAction)showAllTextDialog:(id)sender;



@end

实现文件（按钮实现部分）：

[cpp] view
plaincopy

- (IBAction)showTextDialog:(id)sender {

//初始化进度框，置于当前的View当中

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

[self.view addSubview:HUD];



//如果设置此属性则当前的view置于后台

HUD.dimBackground = YES;



//设置对话框文字

HUD.labelText = @"请稍等";



//显示对话框

[HUD showAnimated:YES whileExecutingBlock:^{

//对话框显示时需要执行的操作

sleep(3);

} completionBlock:^{

//操作执行完后取消对话框

[HUD removeFromSuperview];

[HUD release];

HUD = nil;

}];

}



- (IBAction)showProgressDialog:(id)sender {

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

[self.view addSubview:HUD];

HUD.labelText = @"正在加载";



//设置模式为进度框形的

HUD.mode = MBProgressHUDModeDeterminate;

[HUD showAnimated:YES whileExecutingBlock:^{

float progress = 0.0f;

while (progress < 1.0f) {

progress += 0.01f;

HUD.progress = progress;

usleep(50000);

}

} completionBlock:^{

[HUD removeFromSuperview];

[HUD release];

HUD = nil;

}];

}



- (IBAction)showProgressDialog2:(id)sender {

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

[self.view addSubview:HUD];

HUD.labelText = @"正在加载";

HUD.mode = MBProgressHUDModeAnnularDeterminate;



[HUD showAnimated:YES whileExecutingBlock:^{

float progress = 0.0f;

while (progress < 1.0f) {

progress += 0.01f;

HUD.progress = progress;

usleep(50000);

}

} completionBlock:^{

[HUD removeFromSuperview];

[HUD release];

HUD = nil;

}];

}



- (IBAction)showCustomDialog:(id)sender {

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

[self.view addSubview:HUD];

HUD.labelText = @"操作成功";

HUD.mode = MBProgressHUDModeCustomView;

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

[HUD showAnimated:YES whileExecutingBlock:^{

sleep(2);

} completionBlock:^{

[HUD removeFromSuperview];

[HUD release];

HUD = nil;

}];



}



- (IBAction)showAllTextDialog:(id)sender {

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

[self.view addSubview:HUD];

HUD.labelText = @"操作成功";

HUD.mode = MBProgressHUDModeText;



//指定距离中心点的X轴和Y轴的偏移量，如果不指定则在屏幕中间显示

// HUD.yOffset = 150.0f;

// HUD.xOffset = 100.0f;



[HUD showAnimated:YES whileExecutingBlock:^{

sleep(2);

} completionBlock:^{

[HUD removeFromSuperview];

[HUD release];

HUD = nil;

}];

}

依次实现的效果如下：











下面这个效果就类似Android中的Toast：




以上就简单介绍了MBProgressHUD的使用，这里都是采用block的形式来操作的，这样写起代码来更直观也更高效。
转自：http://blog.csdn.net/tangren03/article/details/7877120