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//
// RootViewController.m
// UIActivityIndicatorViewDemo
//
// Created by Dubai on 15/4/28.
// Copyright (c) 2015年 Dubai. All rights reserved.
//
#import "RootViewController.h"
@interface RootViewController ()
@property (strong, nonatomic) UIActivityIndicatorView *activityIndicator ;
@end
@implementation RootViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
self.view.backgroundColor = [UIColor whiteColor];
self.activityIndicator = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(100, 100, 60, 60)];
[self.view addSubview:self.activityIndicator];
self.activityIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyleGray;
[self.activityIndicator startAnimating];
[NSTimer scheduledTimerWithTimeInterval:3.0f target:self selector:@selector(timerStop) userInfo:nil repeats:YES];
}
- (void)timerStop
{
[self.activityIndicator stopAnimating];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
@end
ios 系统自带的菊花(UIActivityIndicatorView)指示器
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原文地址：http://blog.csdn.net/zhaoguodongios/article/details/45341727
