IOS UIProgressView 用法

UIProgressView:

 作用：

动态显示当前工作状态进度。

 

progressView

Progress bar view

 

1.h file

 

//  Created by denny chen on 12-7-8.

//  Copyright (c) 2012年 __MyCompanyName__. All rights reserved.

//

#import <UIKit/UIKit.h>

@interface ProgressViewViewController : UIViewController

{

    UIProgressView *progressview;

    UIProgressView *barprogressview;

    NSTimer *timer;

    IBOutlet UIButton *startButton;

    IBOutlet UIButton *stopButton; 

}

@property (nonatomic,retain) IBOutlet UIProgressView *progressview;

@property (nonatomic,retain) IBOutlet UIProgressView *barprogressview;

-(IBAction) startProgress:(id)sender;

-(IBAction) stopProgress:(id)sender;

@end

 

 

2 .m file

 

@implementation ProgressViewViewController

@synthesize progressview;

@synthesize barprogressview;

- (void)viewDidLoad

{

    self.progressview=nil;

    self.barprogressview=nil;

    [super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

    stopButton.enabled = NO;

    startButton.enabled = YES; 

}

-(void) dealloc

{

    self.progressview=nil;

    self.barprogressview=nil;

    

    [super dealloc];

}

- (void)viewDidUnload

{

    self.progressview=nil;

    self.barprogressview=nil;

    [super viewDidUnload];

    // Release any retained subviews of the main view.

}

/*进度条每次加0.01 */

-(void) timerChanged:(id)sender

{

    self.progressview.progress +=0.01f;

    self.barprogressview.progress +=0.01f;

}

-(IBAction) startProgress:(id)sender

{

    

    timer=[NSTimer scheduledTimerWithTimeInterval:0.03f

                                         target:self 

                                         selector:@selector(timerChanged:) 

                                         userInfo:nil 

                                         repeats:YES];

     //[timer retain];

      startButton.enabled = NO;

    stopButton.enabled = YES;

}

-(IBAction) stopProgress:(id)sender

{

    [timer invalidate];

    //[timer release];

    //timer =nil;

    

    self.progressview.progress=0.0f;

    self.barprogressview.progress=0.0f;

 

     startButton.enabled = YES;

    stopButton.enabled = NO;

}

 

3 run reslut