UIProgressView

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UIProgressView相关

- (void)viewDidLoad {    [super viewDidLoad];    [self progressViewFun];}

//进度条相关-(void)progressViewFun{        self.view.backgroundColor = [UIColor blackColor];        CGRect screen = [[UIScreen mainScreen] bounds];    ///1.进度条    CGFloat progressViewWidth = 200;    CGFloat progressViewHeight = 2;    CGFloat progressViewTopView = 283;        self.progressView = [[UIProgressView alloc] initWithFrame:CGRectMake((screen.size.width - progressViewWidth)/2 , progressViewTopView, progressViewWidth, progressViewHeight)];        [self.view addSubview: self.progressView];        ///2.Download按钮    UIButton* buttonDownload = [UIButton buttonWithType:UIButtonTypeSystem];    [buttonDownload setTitle:@"Download" forState:UIControlStateNormal];        CGFloat buttonDownloadWidth = 69;    CGFloat buttonDownloadHeight = 30;    CGFloat buttonDownloadTopView = 384;        buttonDownload.frame = CGRectMake((screen.size.width - buttonDownloadWidth)/2 , buttonDownloadTopView, buttonDownloadWidth, buttonDownloadHeight);    //指定事件处理方法    [buttonDownload addTarget:self action:@selector(downloadProgress:) forControlEvents: UIControlEventTouchUpInside];    [self.view addSubview:buttonDownload];}

//按钮点击事件- (void)downloadProgress:(id)sender {    self.timer = [NSTimer scheduledTimerWithTimeInterval:1.0                                                  target:self                                                selector:@selector(download)                                                userInfo:nil                                                 repeats:TRUE];}

//定时器事件-(void)download{    self.progressView.progress = self.progressView.progress + 0.1;    if (self.progressView.progress == 1.0) {        [self.timer invalidate];                UIAlertController* alertController  = [UIAlertController alertControllerWithTitle:@"download completed！" message: @"" preferredStyle:UIAlertControllerStyleAlert];                UIAlertAction* okAction = [UIAlertAction actionWithTitle:@"Ok" style:UIAlertActionStyleCancel handler:nil];                [alertController addAction:okAction];                //显示        [self presentViewController:alertController animated:true completion:nil];    }    }

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