我在尝试更改 popoverController 中导航 Controller 的颜色时遇到问题。
我正在尝试做这样的事情:
if (self.popoverController == nil) {
ArtistsViewController *artistsViewController =
[[ArtistsViewController alloc]
initWithNibName:@"ArtistsViewController"
bundle:[NSBundle mainBundle]];
artistsViewController.navigationItem.title = @"Artists";
UINavigationController *navController =
[[UINavigationController alloc]
initWithRootViewController:artistsViewController];
UIPopoverController *popover =
[[UIPopoverController alloc]
initWithContentViewController:artistsViewController.navigationController];
artistsViewController.navigationController.navigationBar.tintColor=[UIColor greenColor];
popover.delegate = self;
[artistsViewController release];
[navController release];
self.popoverController = popover;
[popover release];
}
[self.popoverController
presentPopoverFromBarButtonItem:sender
permittedArrowDirections:UIPopoverArrowDirectionAny
animated:YES];
但它不起作用。有什么建议？
最佳答案
////////////////////////////////////////
//////////// **解决方案** ////////
////////////////////////////////////////
我要编辑这篇文章，因为我解决了我的问题，我认为在这里分享我的解决方案可能会有所帮助:
首先 ，请遵循以下示例:
http://mobiforge.com/designing/story/using-popoverview-ipad-app-development
完成后进入第二步。
第二步将添加一个新的 popoverBackgroundViewClass:
在您的项目目标类中添加新文件并将其命名为“CustomPopoverBackgroundView”
///////////////////////////////////////////////
////// CustomPopoverBackgroundView.h /////////
///////////////////////////////////////////////
#import < UIKit/UIKit.h >
#import < UIKit/UIPopoverBackgroundView.h >
@interface CustomPopoverBackgroundView : UIPopoverBackgroundView{
UIPopoverArrowDirection direction;
CGFloat offset;
}
@end
//////////////////////////////////////////////
////// CustomPopoverBackgroundView.m /////////
//////////////////////////////////////////////
#import "CustomPopoverBackgroundView.h"
@implementation CustomPopoverBackgroundView
- (void)layoutSubviews {
[super layoutSubviews];
CGFloat fullHeight = self.frame.size.height;
CGFloat fullWidth = self.frame.size.width;
CGFloat startingLeft = 0.0;
CGFloat startingTop = 0.0;
CGFloat arrowCoord = 0.0;
UIImage *arrow;
UIImageView *arrowView;
switch (self.arrowDirection) {
case UIPopoverArrowDirectionUp:
startingTop += 13.0;
fullHeight -= 13.0;
//the image line.png will be the corner
arrow = [UIImage imageNamed:@"line.png"];
arrowCoord = (self.frame.size.width / 2) - self.arrowOffset;
arrowView = [[[UIImageView alloc] initWithFrame:CGRectMake(arrowCoord, 0, 13.0, 13.0)] autorelease];
break;
case UIPopoverArrowDirectionDown:
fullHeight -= 13.0;
arrow = [UIImage imageNamed:@"line.png"];
arrowCoord = (self.frame.size.width / 2) - self.arrowOffset;
arrowView = [[[UIImageView alloc] initWithFrame:CGRectMake(arrowCoord, fullHeight, 13.0, 13.0)] autorelease];
break;
case UIPopoverArrowDirectionLeft:
startingLeft += 13.0;
fullWidth -= 13.0;
arrow = [UIImage imageNamed:@"line.png"];
arrowCoord = (self.frame.size.height / 2) - self.arrowOffset;
arrowView = [[[UIImageView alloc] initWithFrame:CGRectMake(0, arrowCoord, 13.0, 13.0)] autorelease];
break;
case UIPopoverArrowDirectionRight:
fullWidth -= 13.0;
arrow = [UIImage imageNamed:@"line.png"];
arrowCoord = (self.frame.size.height / 2) - self.arrowOffset;
arrowView = [[[UIImageView alloc] initWithFrame:CGRectMake(self.frame.size.width-13.0, arrowCoord, 13.0, 13.0)] autorelease];
break;
}
//this image will be your background
UIImage *bg = [[UIImage imageNamed:@"lineBack.png"] resizableImageWithCapInsets:UIEdgeInsetsMake(8.0, 8.0, 8.0, 8.0)];
UIImageView *imageView = [[[UIImageView alloc] initWithFrame:CGRectMake(startingLeft, startingTop, fullWidth, fullHeight)] autorelease];
[imageView setImage:bg];
[arrowView setImage:arrow];
[self addSubview:imageView];
[self addSubview:arrowView];
}
- (CGFloat) arrowOffset {
return offset;
}
- (void) setArrowOffset:(CGFloat)arrowOffset {
offset = arrowOffset;
[self setNeedsLayout];
}
- (UIPopoverArrowDirection)arrowDirection {
return direction;
}
- (void)setArrowDirection:(UIPopoverArrowDirection)arrowDirection {
direction = arrowDirection;
[self setNeedsLayout];
}
+ (CGFloat)arrowHeight {
return 30.0;
}
+ (CGFloat)arrowBase {
return 30.0;
}
+ (UIEdgeInsets)contentViewInsets {
return UIEdgeInsetsMake(30.0, 30.0, 30.0, 30.0);
}
@end
第三步:
完成后，在“PopOverExample1ViewController.m”中添加这一行:
导入新类:
#import " CustomPopoverBackgroundView.h "
-(IBAction) showMovies:(id) sender {
if (self.popoverController == nil) {
MoviesViewController *movies =
[[MoviesViewController alloc]
initWithNibName:@"MoviesViewController"
bundle:[NSBundle mainBundle]];
UIPopoverController *popover =
[[UIPopoverController alloc] initWithContentViewController:movies];
popover.delegate = self;
[movies release];
//THIS IS THE LINE THAT YOU HAVE TO ADD
popover.popoverBackgroundViewClass=[CustomPopoverBackgroundView class];
self.popoverController = popover;
[popover release];
}
[self.popoverController
presentPopoverFromBarButtonItem:sender
permittedArrowDirections:UIPopoverArrowDirectionAny
animated:YES];
}
-(IBAction) btnShowMovies:(id) sender {
if (self.popoverController == nil) {
MoviesViewController *movies =
[[MoviesViewController alloc]
initWithNibName:@"MoviesViewController"
bundle:[NSBundle mainBundle]];
UIPopoverController *popover =
[[UIPopoverController alloc] initWithContentViewController:movies];
popover.delegate = self;
[movies release];
//THIS IS THE LINE THAT YOU HAVE TO ADD
popover.popoverBackgroundViewClass=[CustomPopoverBackgroundView class];
self.popoverController = popover;
[popover release];
}
CGRect popoverRect = [self.view convertRect:[btn frame]
fromView:[btn superview]];
popoverRect.size.width = MIN(popoverRect.size.width, 100);
[self.popoverController
presentPopoverFromRect:popoverRect
inView:self.view
permittedArrowDirections:UIPopoverArrowDirectionAny
animated:YES];
}
好吧!!!就这样!如果有人需要帮助，请告诉我。
最好的祝愿!
关于ipad - 在弹出窗口中更改颜色导航 Controller ，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/8490261/