UIProgressView动画从小到大

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UIProgressView设置进度的动画

Q：UIProgressView进度动画效果会从左上角开始，并由小到大?

- (void)setProgress:(float)progress animated:(BOOL)animated

viewDidLoad里

[self.myProgressView3 setProgress:0.00001 animated:NO];
[self.myProgressView3 setProgress:0.0 animated:YES];

[UIView animateWithDuration:5 animations:^{
    [self.myProgressView1 setProgress:0.8 animated:YES];
    [self.myProgressView2 setProgress:0.8 animated:YES];
    [self.myProgressView3 setProgress:0.8 animated:YES];
} completion:^(BOOL finished) {
}];

区别：第二个progressView设置了backgroundColor为灰色

A：让进度动画一开始高度就充满路径

暂时找到的方法是：

[self.myProgressView3 setProgress:0.00001 animated:NO];
[self.myProgressView3 setProgress:0.0 animated:YES];

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end~希望您有所收获
——by roy