iOS 进度条的实现

jopen 7年前

在iOS的开发当中,经常会遇到读取系统资源等类似的情况,如果网络比较卡的话,用户很可能以为这个app已经挂掉了,用户体验很差,老外还是很好的,提供开源的source,跟大家一块学习下。

iOS的进度条可以分为几类,有普通的,就像一个圈圈在那转,有在圈圈下加文字的,有直接是纯文字的,等等。。

在自己的项目中需要加入以下2个文件:MBProgressHUD.h和MBProgressHUD.m;接下来我们只需要在我们的.m文件中引用progress的头文件即可。

对于普通的进度条,代码如下:

- (IBAction)showSimple:(id)sender {   // The hud will dispable all input on the view (use the higest view possible in the view hierarchy)   HUD = [[MBProgressHUD alloc] initWithView:self.navigationController.view];   [self.navigationController.view addSubview:HUD];      // Regiser for HUD callbacks so we can remove it from the window at the right time   HUD.delegate = self;      // Show the HUD while the provided method executes in a new thread   [HUD showWhileExecuting:@selector(myTask) onTarget:self withObject:nil animated:YES];  }
选择器函数myTask中可以做我们想要做的事情:

- (void)myTask {   // Do something usefull in here instead of sleeping ...   sleep(3);  }

效果如图:

 iOS 进度条的实现

带有文字的进度条:

- (IBAction)showWithLabel:(id)sender {      HUD = [[MBProgressHUD alloc] initWithView:self.navigationController.view];   [self.navigationController.view addSubview:HUD];      HUD.delegate = self;   HUD.labelText = @"Loading";      [HUD showWhileExecuting:@selector(myTask) onTarget:self withObject:nil animated:YES];  }
效果图如下:

 iOS 进度条的实现

纯文字的代码:

- (IBAction)showTextOnly:(id)sender {      MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.navigationController.view animated:YES];      // Configure for text only and offset down   hud.mode = MBProgressHUDModeText;   hud.labelText = @"Some message...";   hud.margin = 10.f;   hud.yOffset = 150.f;   hud.removeFromSuperViewOnHide = YES;      [hud hide:YES afterDelay:3];  }

效果图如下:

 iOS 进度条的实现

参考地址:https://github.com/jdg/MBProgressHUD

 来自:http://blog.csdn.net/weasleyqi/article/details/8072897