在导航控制器类的类别中添加左右栏按钮项 [英] Add left and right bar button item in category of navigation controller class
问题描述
我已经创建了导航控制器的类别,并在视图中加载了该导航控制器类(此类的类别),并设置了标题和左右栏按钮.
i have create a category of navigation controller and set title and left and right bar button in view did load of this navigation controller class (category of this class).
- (void)viewDidAppear:(BOOL)animated
{
NSArray *ver = [[UIDevice currentDevice].systemVersion componentsSeparatedByString:@"."];
if ([[ver objectAtIndex:0] intValue] >= 7) {
self.navigationBar.barTintColor = [UIColor colorWithRed:229.0f/255.0f green:114.0f/255.0f blue:89.0f/255.0f alpha:1.0f];
self.navigationBar.translucent = NO;
}else{
self.navigationBar.tintColor = [UIColor colorWithRed:229.0f/255.0f green:114.0f/255.0f blue:89.0f/255.0f alpha:1.0f];
}
UILabel *lblTitleView=[[UILabel alloc]initWithFrame:CGRectMake(0, 0, 170, 44)];
[lblTitleView setTextColor:[UIColor whiteColor]];
[lblTitleView setFont:[UIFont boldSystemFontOfSize:17]];
[lblTitleView setText:[self SetnavigationTitle:self.navigationItem.title]];
[lblTitleView setTextAlignment:NSTextAlignmentCenter];
[lblTitleView setBackgroundColor:[UIColor clearColor]];
[self.navigationItem setTitleView:lblTitleView];
// UINavigationController*navCnt = [[UINavigationController alloc] init];
UIButton *btnLeft=[UIButton buttonWithType:UIButtonTypeCustom];
[btnLeft setFrame:CGRectMake(0, 5, 32, 32)];
[btnLeft setImage:[UIImage imageNamed:@"btn_back.png"] forState:UIControlStateNormal];
[btnLeft setImage:[UIImage imageNamed:@"btn_back.png"] forState:UIControlStateHighlighted];
[btnLeft setTitle:[NSString stringWithFormat:@"%@",[self SetleftbarbuttonTitle:self.navigationItem.leftBarButtonItem.title]] forState:UIControlStateNormal];
[btnLeft setTintColor:[UIColor grayColor]];
[btnLeft setBackgroundColor:[UIColor greenColor]];
[btnLeft setTag:101];
[btnLeft addTarget:self action:@selector(btnAction:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *leftBarButton=[[UIBarButtonItem alloc]initWithCustomView:btnLeft];
[self.navigationItem setLeftBarButtonItem:leftBarButton];
self.navigationItem.hidesBackButton=YES;
UIButton *btnRight=[UIButton buttonWithType:UIButtonTypeCustom];
[btnRight setFrame:CGRectMake(270, 5, 32, 32)];
[btnRight setImage:[UIImage imageNamed:@"btn_back.png"] forState:UIControlStateNormal];
[btnRight setImage:[UIImage imageNamed:@"btn_back.png"] forState:UIControlStateHighlighted];
[btnRight setTitle:[NSString stringWithFormat:@"%@",[self SetRightbarbuttonTitle:self.navigationItem.rightBarButtonItem.title]] forState:UIControlStateNormal];
[btnRight setTintColor:[UIColor clearColor]];
[btnRight setBackgroundColor:[UIColor greenColor]];
[btnRight setTag:102];
[btnRight addTarget:self action:@selector(btnAction:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *rightBarButton=[[UIBarButtonItem alloc]initWithCustomView:btnRight];
[self.navigationItem setRightBarButtonItem:rightBarButton];
[super viewDidAppear:animated];
}
当我只是从任何视图控制器传递标题时,它对于每个视图控制器都可以正常工作,但是现在我有了在导航控制器子类中设置左右栏按钮项的代码.
when i just pass title from any view controller then its work fine for each view controller but now i have code for set both left and right bar button item in navigation controller sub class.
但是现在在视图控制器上,我没有在该视图控制器上获得导航控制器的uibar按钮项.预先感谢.
but now on the view controller i am not getting the uibar button item of navigation controller on this view controller. thanks in advance.
推荐答案
尝试以下方法:
显示导航控制器的 leftBarButtonItem :
UIImage *faceImage = [UIImage imageNamed:@"back_arrow.png"];
UIButton *face = [UIButton buttonWithType:UIButtonTypeCustom];
face.bounds = CGRectMake( 10, 0, faceImage.size.width, faceImage.size.height );
[face addTarget:self action:@selector(handleBack:) forControlEvents:UIControlEventTouchUpInside];
[face setImage:faceImage forState:UIControlStateNormal];
UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithCustomView:face];
self.navigationItem.leftBarButtonItem = backButton;
[self.navigationItem setHidesBackButton:YES animated:YES];
[self.navigationItem setLeftBarButtonItem:nil animated:NO];
[self.navigationItem setBackBarButtonItem:nil];
显示导航控制器的 rightBarButtonItem :
UIImage *faceImage1= [UIImage imageNamed:@"slideshowarrow"];
UIButton *face1 = [UIButton buttonWithType:UIButtonTypeCustom];
face1.bounds = CGRectMake( 10, 0, faceImage1.size.width, faceImage1.size.height );
[face1 addTarget:self action:@selector(Goto_nextView) forControlEvents:UIControlEventTouchUpInside];
[face1 setImage:faceImage1 forState:UIControlStateNormal];
UIBarButtonItem *backButton1 = [[UIBarButtonItem alloc] initWithCustomView:face1];
self.navigationItem.rightBarButtonItem = backButton1;
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