我使用NSTimer和圆形进度条作为倒数计时器,即15秒
它的工作与以下代码,但我得到tick动画的进度条,而不是光滑的一个,如何使它平滑的动画
- (void)viewDidLoad
{
[super viewDidLoad];
self.labeledLargeProgressView.roundedCorners = NO;
self.labeledLargeProgressView.trackTintColor =[UIColor colorWithRed:0.0f/255.0f green:173.0f/255.0f blue:255.0f/255.0f alpha:1.0f];
self.labeledLargeProgressView.progressTintColor =[UIColor colorWithRed:255.0f/255.0f green:96.0f/255.0f blue:88.0f/255.0f alpha:1.0f];
self.labeledLargeProgressView.thicknessRatio = 1.0f;
self.labeledLargeProgressView.clockwiseProgress = YES;
[self.view addSubview:self.labeledLargeProgressView];
seconds = 15.0;
[self startAnimation];
}
- (void)progressChange
{
CGFloat progress ;
DALabeledCircularProgressView *labeledProgressView = self.labeledLargeProgressView;
if(labeledProgressView.progress >=1.0f && [self.timer isValid]){
[self stopAnimation];
seconds = 15.0f;
}
else{
progress=labeledProgressView.progress + 0.06666667f;
[labeledProgressView setProgress:progress animated:YES];
seconds --;
labeledProgressView.progressLabel.text = [NSString stringWithFormat:@"%i", seconds];
}
}
- (void)startAnimation
{
self.timer = [NSTimer scheduledTimerWithTimeInterval:1.0
target:self
selector:@selector(progressChange)
userInfo:nil
repeats:YES];
self.continuousSwitch.on = YES;
}
- (void)stopAnimation
{
[self.timer invalidate];
self.timer = nil;
self.continuousSwitch.on = NO;
}
我发现的是一组UIview动画和进度视图动画,工作得更好,动画的进度视图顺利。如果你只是使用动画和progressview动画的组合,它会直接触发,而不考虑UIview动画计时器。
-(void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
timer = [NSTimer scheduledTimerWithTimeInterval: 1.0f
target: self
selector: @selector(updateTimer)
userInfo: nil
repeats: YES];
}
- (void)updateTimer
{
if (progressView.progress >= 1.0) {
[timer invalidate];
}
[UIView animateWithDuration:1 animations:^{
float newProgress = [self.progressView progress] + 0.125;
[self.progressView setProgress:newProgress animated:YES];
}];
}
可以随意调整动画时间,以实现更好更流畅的过渡
我自己解决了这个问题,我做的是更频繁地更新0.1f而不是1.0f
- (void)progressChange
{
CGFloat progress ;
DALabeledCircularProgressView *labeledProgressView = self.labeledLargeProgressView;
if(labeledProgressView.progress >=1.0f && [self.timer isValid]){
[self stopAnimation];
seconds = 15.0f;
_counter = 0;
}
else{
progress=labeledProgressView.progress + 0.00666667f;
_counter ++;
[labeledProgressView setProgress:progress animated:YES];
if(_counter % 10 == 0){
seconds --;
}
labeledProgressView.progressLabel.text = [NSString stringWithFormat:@"%i", seconds];
}
}
- (void)startAnimation
{
self.timer = [NSTimer scheduledTimerWithTimeInterval:0.1
target:self
selector:@selector(progressChange)
userInfo:nil
repeats:YES];
self.continuousSwitch.on = YES;
}