如何在iphone sdk中实现UIProgressView

Question

我在按钮单击[NSThread detachNewThreadSelector: @selector(spinBegininapp) toTarget:self withObject:nil];中显示此代码以显示后台线程正在运行的用户的活动指示器,我将此代码用于启用活动指示器

- (void)spinBegininapp
{
    _activityindictor.hidden = NO;

}

它工作正常,当我点击它显示活动指示器动画的按钮,当线程它隐藏活动指示器,但我需要显示progressView而不是活动指示器,它根据线程进展,如果线程完成,它需要完全达到进度并自我隐藏.这是可能的.

Answer 1

#pragma mark - Loading Progress

static float progress = 0.0f;

-(IBAction)showWithProgress:(id)sender {
   progress = 0.0f;
   _progressView.progress = progress;
   [self performSelector:@selector(increaseProgress) withObject:nil afterDelay:0.3];
}

-(void)increaseProgress {
   progress+=0.1f;
   _progressView.progress = progress;    
   if(progress < 1.0f)
     [self performSelector:@selector(increaseProgress) withObject:nil afterDelay:0.3];
   else
    [self performSelector:@selector(dismiss) withObject:nil afterDelay:0.2f];
}

-(void)dismiss {
   [self progressCompleted];
}

现在,无论何时何地想要显示进度,都要调用以下函数

[self showWithProgress:nil]; 

进度范围介于0.0和1.0之间

1.0表示100%