一，效果圖。

二，工程圖。

三，代碼。

ViewController.h

#import <UIKit/UIKit.h>@interface ViewController : UIViewController {//loading UIView *backViewLoad; } @end

?

ViewController.m

#import "ViewController.h" //loading #import "IanAlert.h" @interface ViewController () @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. //loading [self addLoadingView]; } //點擊任何處顯示loading -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { //loading backViewLoad.hidden=NO; [IanAlert showloading]; [self performSelector:@selector(loadStop) withObject:nil afterDelay:2.0]; } //停止loading -(void)loadStop { backViewLoad.hidden=YES; [IanAlert hideLoading]; } #pragma -mark --loading------ -(void)addLoadingView { backViewLoad=[[UIView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)]; backViewLoad.backgroundColor=[UIColor blackColor]; backViewLoad.alpha=0.8; backViewLoad.hidden=YES; [self.view addSubview:backViewLoad]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } @end

轉載于:https://www.cnblogs.com/yang-guang-girl/p/7877558.html

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