之前自定義了navigationBar的背景顏色部翘，升級(jí)到iOS10后一铅，發(fā)現(xiàn)title,跟leftBarButtonItem不顯示轰绵。
iOS9 之前的navigationBar的背景是_UINavigationBarBackground票摇，到iOS變成了_UIBarBackground亥揖，可以通過xcode查看一下相應(yīng)的布局。
我的解決辦法是杈湾，分別判斷iOS10解虱，iOS9的版本，找到對(duì)應(yīng)的背景圖漆撞，將起隱藏掉殴泰，可以消除分割線。然后重新創(chuàng)建一個(gè)視圖層浮驳，顏色可以自定義悍汛，需要注意在添加視圖或者更新視圖時(shí)要放到主線程里，同時(shí)這個(gè)方法需要在viewWillAppear里調(diào)用至会。
#define isIOS9 ([[UIDevice currentDevice].systemVersion intValue]>=9?YES:NO)
#define isIOS10 ([[UIDevice currentDevice].systemVersion intValue]>=10?YES:NO)
#pragma mark - 動(dòng)態(tài)修改狀態(tài)欄跟頂部導(dǎo)航欄的顏色
-(void)changeNavigationBarBackgroundColor:(UIColor*)barBackgroundColor{
if([self.navigationController.navigationBar respondsToSelector:@selector(setBackgroundImage:forBarMetrics:)]){
NSArray*subviews = self.navigationController.navigationBar.subviews;
for(id viewObj in subviews){
if(isIOS10) {
//iOS10,改變了狀態(tài)欄的類為 _UIBarBackground
NSString *classStr = [NSString stringWithUTF8String:object_getClassName(viewObj)];
if([classStr isEqualToString:@"_UIBarBackground"]) {
UIImageView *imageView = (UIImageView*)viewObj; imageView.hidden=YES;
}
}else{
//iOS9以及iOS9之前使用的是 _UINavigationBarBackground
NSString *classStr = [NSString stringWithUTF8String:object_getClassName(viewObj)];
if( [classStr isEqualToString:@"_UINavigationBarBackground"]) {
UIImageView *imageView = (UIImageView*)viewObj; imageView.hidden=YES;
}
}
}
UIImageView *imageView = [self.navigationController.navigationBar viewWithTag:111];
if(!imageView){
imageView=[[UIImageView alloc] initWithFrame:CGRectMake(0,-20,self.view.frame.size.width,64)];
imageView.tag =111;
[imageView setBackgroundColor:barBackgroundColor];
dispatch_async(dispatch_get_main_queue(), ^{ [self.navigationController.navigationBar insertSubview:imageView atIndex:0]; });
}
else{
[imageView setBackgroundColor:barBackgroundColor];
dispatch_async(dispatch_get_main_queue(), ^{ [self.navigationController.navigationBar sendSubviewToBack:imageView]; });
}
}
}
