3

我想在 UIAlertView 上显示 UIProgressView 以显示文件上传的处理过程。但是我搜索了太多，并且在该链接上也找到了，但仍然无法做到这一点。我不明白这个

如果有人知道最简单的方法，请告诉我。

4

6 回答 6

6

我在这样做时遇到了问题，最后得到了这个：

av = [[UIAlertView alloc] initWithTitle:@"Running" message:@"" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:nil];
progressView = [[UIProgressView alloc] initWithProgressViewStyle:UIProgressViewStyleBar];
progressView.frame = CGRectMake(0, 0, 200, 15);
progressView.bounds = CGRectMake(0, 0, 200, 15);
progressView.backgroundColor = [UIColor blackColor];

[progressView setUserInteractionEnabled:NO];
[progressView setTrackTintColor:[UIColor blueColor]];
[progressView setProgressTintColor:[UIColor redColor]];
[av setValue:progressView forKey:@"accessoryView"];

[av show];
于 2014-05-29T22:03:26.370 回答
5

试试这个代码...

UIAlertView *av = [[UIAlertView alloc] initWithTitle:@"" message:@"" delegate:nil cancelButtonTitle:nil otherButtonTitles:nil];
UIProgressView *pv = [[UIProgressView alloc] initWithProgressViewStyle:UIProgressViewStyleBar];
pv.frame = CGRectMake(20, 20, 200, 15);
pv.progress = 0.5;
[av addSubview:pv];
[av show];
于 2012-07-26T12:56:09.833 回答
3

虽然这并不能完全回答您的问题，但请尝试MBProgressHud，这是一个内置此功能的第三方控件。Github 上提供的示例应该可以让您快速上手。

于 2012-07-26T12:51:35.140 回答
0

试试这个代码。将 YES 用于活动指示器，将 NO 用于 progressView

- (void) createProgressionAlertWithMessage:(NSString *)message withActivity:(BOOL)activity
{
 progressAlert = [[UIAlertView alloc] initWithTitle: message
 message: @"Please wait..."
 delegate: self
 cancelButtonTitle: nil
 otherButtonTitles: nil];


 // Create the progress bar and add it to the alert
 if (activity) {
 activityView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];
 activityView.frame = CGRectMake(139.0f-18.0f, 80.0f, 37.0f, 37.0f);
 [progressAlert addSubview:activityView];
 [activityView startAnimating];
 } else {
 progressView = [[UIProgressView alloc] initWithFrame:CGRectMake(30.0f, 80.0f, 225.0f, 90.0f)];
 [progressAlert addSubview:progressView];
 [progressView setProgressViewStyle: UIProgressViewStyleBar];
 }
 [progressAlert show];
 [progressAlert release];
}
于 2012-07-26T12:55:17.570 回答
0

为什么不使用alerviewdelegate 方法

- (void)willPresentAlertView:(UIAlertView *)alertView

这样做的好处是我们可以看到警报视图在屏幕上的实际大小，因为 iOS 已经预先计算了这一点，所以不需要幻数 - 或者覆盖 Apple 警告的类！

从 iOS7 开始，我记得从 Apple 那里读过一些文件，说不要硬编码任何帧大小，而是总是从应用程序中计算它们，或者类似的东西？

- (void)willPresentAlertView:(UIAlertView *)alertView
{
   CGRect alertRect = alertview.bounds;
   UIProgressView *loadingBar = [[UIProgressView alloc] initWithProgressViewStyle:UIProgressViewStyleBar];
   loadingBar.bounds = CGRectMake(0, 0, alertRect.width, HEIGHT_YOU_WANT);
   //  Do what ever you want here to set up the alertview, as you have all the details you need
   //  Note the status Bar will always be there, haven't found a way of hiding it yet
   //  Suggest adding an objective C reference to the original loading bar if you want to manipulate it further on don't forget to add #import <objc/runtime.h>
   objc_setAssociatedObject(alertView, &myKey, loadingBar, OBJC_ASSOCIATION_RETAIN); // Send the progressbar over to the alertview
}

拉取对加载条的引用

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex

然后使用

UIProgressView *loadingBar = objc_getAssociatedObject(alertView, &myKey);

记得有定义

#import <objc/runtime.h>
static char myKey;

在你的类声明的顶部

于 2013-07-07T03:11:42.340 回答
0

这是创建一个警报视图

UIAlertController* alert=[UIAlertController alertControllerWithTitle:@"Message" message:@"This is test" preferredStyle:UIAlertControllerStyleAlert];

现在添加文本字段

[alert addTextFieldWithConfigurationHandler:^(UITextField *textField)
 {
     textField.placeholder=@"Enter Text label";
     [textField setBorderStyle:UITextBorderStyleRoundedRect];
     textField.backgroundColor=[UIColor whiteColor];
 }];

并将其添加到视图中

[self presentViewController:alert animated:YES completion:nil];

于 2016-02-22T18:34:34.597 回答