ios – 如何获得UIAlertController的帧宽？

2023年5月25日 175次阅读

我想获得UIAlertController框架的宽度,以便我可以指定UIPlertController附带的UIPickerView和UIToolbar的宽度.

我试图使用以下语句来获取宽度.

alertPicker.view.frame.size.width

但是,宽度与viewController的宽度相同：

self.view.frame.size.width

有没有想过获得UIAlertController的宽度？非常感谢.

这是我的代码.

    UIAlertController *alertPicker = [UIAlertController alertControllerWithTitle:nil message:@"\n\n\n\n\n\n\n\n\n\n\n\n" preferredStyle:UIAlertControllerStyleActionSheet];

    CGRect pickerFrame = CGRectMake(8, 0, alertPicker.view.frame.size.width, self.view.frame.size.height/2);
    UIPickerView *pickerView = [[UIPickerView alloc] initWithFrame:pickerFrame];
    pickerView.showsSelectionIndicator = YES;
    pickerView.dataSource = self;
    pickerView.delegate = self;

    UIToolbar* pickerToolbar = [[UIToolbar alloc] initWithFrame: CGRectMake(2, 0, alertPicker.view.frame.size.width, 44)];
    UIBarButtonItem *doneBtn = [[UIBarButtonItem alloc] initWithTitle:@"Done" style:UIBarButtonItemStylePlain target:self action:@selector(doneBtnisClicked:)];
    UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
    pickerToolbar.items = [[NSArray alloc] initWithObjects:flexSpace,doneBtn,nil];

   [alertPicker.view addSubview:pickerToolbar];
   [alertPicker.view addSubview:pickerView];

最佳答案 UIAlertController继承自UIViewController,因此您可以获得UIAlertController的UIView的大小并获得宽度.

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