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:
- #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):
- - (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。
                    
                
                
            
        
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