IOS progressview的简单使用

head 代码。。

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
{
    UIProgressView *progressview;
    UIProgressView *progressviewbar;
    NSTimer *timer;
}
@property(retain,nonatomic)
IBOutlet UIProgressView *progressview;
@property(retain,nonatomic)
IBOutlet UIProgressView *progressviewbar;

-(IBAction)startprogress:(id)sender;
-(IBAction)stopprogress:(id)sender;

@end

m 代码

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController
@synthesize progressview;
@synthesize progressviewbar;
- (void)viewDidLoad
{
    [super viewDidLoad];
    
	// Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
/* 启动进度条 */
-(IBAction)startprogress:(id)sender{
    timer = [NSTimer scheduledTimerWithTimeInterval:0.03f target:self selector:@selector(timeChanged:) userInfo:nil repeats:YES];
    
    /*
     启动一个定时器，间隔时间为0.03s，间隔0.03s即调用self里边的timechanged方法
     */

}
/* 停止进度条，进度都置为零*/
-(IBAction)stopprogress:(id)sender{
    [timer invalidate];
//    [timer release];
    timer = nil;
    self.progressview.progress=0.0f;
    self.progressviewbar.progress=0.0f;
}
/* 进度条进度+0.01*/
-(IBAction)timeChanged:(id)sender{

    self.progressview.progress +=0.01f;
    self.progressviewbar.progress+=0.01f;
}
@end