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在开发过程中，可能会遇到各种不同的场景需要等待加载成功后才能显示数据。以下是自定义的一个动画加载view效果。
在UIViewController的中加载等到效果，如下
我要评论- (void)viewDidLoad {
[super viewDidLoad];
//将view背景颜色变更为黄色
self.view.backgroundColor = [UIColor yellowColor];
//在self.view上加载提示框
[[BIDActivityNote sharedInstance] AddActivityView:self.view];
//延时3分钟后移除提示框
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(3 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[[BIDActivityNote sharedInstance] RemoveActivityView];
});
}
BIDActivityNote.h 实现代码
// // BIDActivityNote.h // MobileShop // // Created by eJiupi on 15-7-23. // Copyright (c) 2014年 xujinzhong. All rights reserved. // #import <Foundation/Foundation.h> @interface BIDActivityNote : NSObject + (BIDActivityNote*)sharedInstance; - (void)AddActivityView:(UIView*)subView; - (void)RemoveActivityView; @end
BIDActivityNote.m 代码实现效果：
//
// BIDActivityNote.m
// MobileShop
//
// Created by eJiupi on 15-7-23.
// Copyright (c) 2014年 xujinzhong. All rights reserved.
//
#import "BIDActivityNote.h"
@interface BIDActivityNote ()
@property (strong, nonatomic) UIView *subView;
@property (strong, nonatomic) UIActivityIndicatorView *act;
@end
@implementation BIDActivityNote
+ (BIDActivityNote*)sharedInstance
{
static BIDActivityNote* instance = nil;
if (instance == nil)
{
instance = [[BIDActivityNote alloc] init];
}
return instance;
}
- (id)init
{
self = [super init];
if (self)
{
NSInteger w = [UIScreen mainScreen].bounds.size.width;
NSInteger h = [UIScreen mainScreen].bounds.size.height;
self.subView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, w, h)];
self.subView.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.5];
self.act = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
//只能设置中心，不能设置大小
self.act.center = CGPointMake(w/2.f, h/2.f);
//设置活动指示器的颜色
self.act.color=[UIColor whiteColor];
[self.act startAnimating]; // 开始旋转
[self.act stopAnimating]; // 结束旋转
//[self.act setHidesWhenStopped:YES]; //当旋转结束时隐藏
[self.subView addSubview:self.act];
}
return self;
}
- (void)AddActivityView:(UIView*)subView
{
//启动
[self.act startAnimating];
[subView addSubview:self.subView];
//实现动画效果
self.subView.transform = CGAffineTransformScale(self.subView.transform, 0, 0);
[UIView animateWithDuration:2 animations:^{
self.subView.transform = CGAffineTransformIdentity;
}];
}
- (void)RemoveActivityView
{
[UIView animateWithDuration:0.7 animations:^{
self.subView.transform = CGAffineTransformScale(self.subView.transform, 0, 0);
} completion:^(BOOL bfinished){
if (bfinished) {
//停止
[self.act stopAnimating];
[self.subView removeFromSuperview];
}
}];
}
@end
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