【代碼筆記】iOS-MBProgressHUD

一，工程圖。

二，代碼。

AppDelegate.h

#import <UIKit/UIKit.h>
#import "MBProgressHUD.h"

@interface AppDelegate : UIResponder
<UIApplicationDelegate,MBProgressHUDDelegate>
{
     MBProgressHUD *mbProgressHUD;
}

@property (strong, nonatomic) UIWindow *window;

@end

AppDelegate.m

#import "AppDelegate.h"
#import "RootViewController.h"

// iPhone 設備的bounds
#define MAIN_SCREEN_FRAME [[UIScreen mainScreen] bounds]
// iPhone 設備的高度
#define MAIN_SCREEN_HEIGHT MAIN_SCREEN_FRAME.size.height-20
// NAV 高度
#define NAV_HEIGHT 44
// TAB 高度
#define TAB_HEIGHT 50
// NAV+TAB 高度
#define NAV_AND_TAB_HEIGHT (NAV_HEIGHT+TAB_HEIGHT)


@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    // Override point for customization after application launch.
    
    RootViewController *rootVC=[[RootViewController alloc]init];
    UINavigationController *nav=[[UINavigationController alloc]initWithRootViewController:rootVC];
    self.window.rootViewController=nav;
    
    //MBProgressHUD的用法
    [self ShowProgressHUD:@"I love you!"];
    [self HideProgressHUD:0.2];
    
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];
    return YES;
}
#pragma mark - MBProgressHUD
-(MBProgressHUD*)ShowProgressHUD:(NSString*) tips;
{
    CGFloat width = 160;
    CGRect frame = CGRectMake((320-width)/2,(MAIN_SCREEN_HEIGHT-NAV_AND_TAB_HEIGHT-width)/2, width, width);
    if (!mbProgressHUD) {
        mbProgressHUD = [[MBProgressHUD alloc] initWithFrame:frame];
        [self.window addSubview:mbProgressHUD];
    }
    [self.window bringSubviewToFront:mbProgressHUD];
    mbProgressHUD.delegate = self;
    mbProgressHUD.labelText = tips;
    [mbProgressHUD show:YES];
    return mbProgressHUD;
}

-(void)HideProgressHUD:(NSTimeInterval)afterDelay;
{
    if (mbProgressHUD)
    {
        [mbProgressHUD hide:TRUE afterDelay:afterDelay];
    }
}