UIProgressView 进度条

//进度条--主要用在下载等需要进度显示的地方
UIProgressView *progressView = [[UIProgressView alloc] initWithProgressViewStyle:UIProgressViewStyleDefault];progressView.frame = CGRectMake(10, 40, 300, 30);progressView.tag = 1;//设置进度,范围0.0~1.0
//progressView.progress = 0.5;//[progressView setProgress:0.5 animated:YES];