UIActionSheet在IOS8上失效

最新推荐文章于 2021-10-22 18:13:03 发布

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本文将介绍如何在iOS应用中使用UIAlertController创建一个包含下拉选择器、工具栏和确认/取消按钮的自定义弹窗。通过设置弹窗样式、布局和交互元素，开发者可以实现更丰富的用户反馈和操作体验。

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  UIAlertController *alert = [UIAlertController alertControllerWithTitle:nil
                                                                   message:@"\n\n\n\n\n\n\n\n\n\n\n"// change UIAlertController height
                                                            preferredStyle:UIAlertControllerStyleActionSheet];
    
    //Make a frame for the picker & then create the picker
    CGRect pickerFrame = CGRectMake(12, 12, 270, 250);
    picker.frame = pickerFrame;
    ios8Picker = picker;
    NSLog(@"%ld",(long)ios8Picker.tag);
    
    
    //set the pickers selection indicator to true so that the user will now which one that they are chosing
    [picker setShowsSelectionIndicator:YES];
    
    //Add the picker to the alert controller
    [alert.view addSubview:picker];
    
    //make the toolbar view
     UIToolbar *toolView = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, alert.view.frame.size.width-16, kToolBarHeight)];
    toolView.backgroundColor = [UIColor blackColor]; //set it's background
    toolView.barStyle = UIBarStyleBlackTranslucent;
    
    UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 160, kToolBarHeight)];
    titleLabel.backgroundColor = [UIColor clearColor];
    titleLabel.font = [UIFont systemFontOfSize:14];
    titleLabel.textColor = [UIColor whiteColor];
    titleLabel.textAlignment = NSTextAlignmentCenter;
    //    titleLabel.text = title;
    UIBarButtonItem *bbtTitle = [[UIBarButtonItem alloc] initWithCustomView:titleLabel];
    UIBarButtonItem *bbtSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
    UIBarButtonItem *bbtOK = [[UIBarButtonItem alloc] initWithTitle:@"确定" style:UIBarButtonItemStyleDone target:self action:@selector(OKWithPicker)];
    bbtOK.width = 60.f;
    UIBarButtonItem *bbtCancel = [[UIBarButtonItem alloc] initWithTitle:@"取消" style:UIBarButtonItemStylePlain target:self action:@selector(CancleWithPicker)];
    bbtCancel.width = 60.f;
    toolView.items = [NSArray arrayWithObjects:bbtCancel,bbtSpace,bbtTitle,bbtSpace,bbtOK, nil];
    
    [alert.view addSubview:toolView];
    
    [self presentViewController:alert animated:NO completion:nil];
}