将图像显示为弹出窗口

Question

我想在UIPopoverArrowDirectionLeft上显示图像。单击按钮后如何将图像显示为弹出窗口？

Answer 1

我假设您的意思是打开一个带有内部图像的弹出屏幕。这是这样做的方法，只需以编程方式将图像添加到弹出视图，或者更好的是，直接在界面构建器中将图像添加到MyPopOverView XIB

- (IBAction)showPopover:(id)sender
{
    if(![popoverController isPopoverVisible]) {
    myPopOver = [[MyPopOverView alloc] initWithNibName:@"MyPopOverView" bundle:nil];
    popoverController = [[UIPopoverController alloc] initWithContentViewController:myPopOver] ;

     // THE IMAGE
    UIImageView *icon = [[UIImageView alloc] initWithImage:[UIImage   imageNamed:@"popoverImage.png"]];

    [popoverController addsubview:icon];

    [popoverController setPopoverContentSize:CGSizeMake(350.0f, 500.0f)];
    [popoverController presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];

    } else {
        [popoverController dismissPopoverAnimated:YES];
    }
}

Answer 2

实现此方案的另一种方法是根据您的需求创建自定义uiview，并在其中设置要显示为弹出框的图像。并在您要显示弹出窗口时显示它。

Answer 3

使用像WEPopOverController这样的自定义popOverViewController。它包含一些属性，可更改箭头上的弹出图像等。

http://www.cocoacontrols.com/controls/wepopover

- (WEPopoverContainerViewProperties *)defaultContainerViewProperties {
    WEPopoverContainerViewProperties *ret = [[WEPopoverContainerViewProperties new] autorelease];

    CGSize imageSize = CGSizeMake(30.0f, 30.0f);
    NSString *bgImageName = @"tri123.png";//@"round-rect-box.png";
    CGFloat bgMargin = 2.0;
    CGFloat contentMargin = 2.0;

    ret.leftBgMargin = bgMargin;
    ret.rightBgMargin = bgMargin;
    ret.topBgMargin = bgMargin;
    ret.bottomBgMargin = bgMargin;
    ret.leftBgCapSize = imageSize.width/2;
    ret.topBgCapSize = imageSize.height/2;
    ret.bgImageName = bgImageName;
    ret.leftContentMargin = contentMargin;
    ret.rightContentMargin = contentMargin;
    ret.topContentMargin = contentMargin;
    ret.bottomContentMargin = contentMargin;
    ret.arrowMargin = 1.0;
    ret.upArrowImageName = @"popoverArrowUpSimple.png";
    ret.downArrowImageName = @"tri2.png";   // Customize your Image
    ret.leftArrowImageName = @"popoverArrowLeftSimple.png";
    ret.rightArrowImageName = @"popoverArrowRightSimple.png";
    return ret;
}