iOS 使用IQKeyboardManager出現導航欄電池條變白、變透明問題處理
阿新 • • 發佈:2019-02-06
前段時間公司App做了一個類似評論的功能,在介面底部有一個輸入評論內容的UITextView控制元件,鍵盤在多次收起、彈出操作時,偶爾會在收起後出現導航欄電池條變白的問題,剛開始知道原因可能是IQKeyboardManager導致,但是一直沒找到根源,一番自摸之後寫了下面的方法進行處理,但是需要在每個可能出現這種問題的介面都進行處理。
- (void)textViewDidEndEditing:(UITextView *)textView
{
NSArray<UIView *> *naviBarSubviews = [XXXApp currentNavController].navigationBar .subviews;
for (UIView *subView in naviBarSubviews) {
if ([subView isKindOfClass:NSClassFromString(@"_UIBarBackground")]) {
if (ScreenSize_X == [XXXContextInfo deviceScreenSize]) {
subView.frame = CGRectMake(0, -44, kXXScreenWidth, 88);
} else {
subView.frame = CGRectMake(0, -20, kXXScreenWidth, 64);
}
}
}
}
在這樣處理後,電池條變回正常,但是push和pop還可能導致其他介面出現問題,又在導航控制器代理方法裡做了處理。
- (void)navigationController:(UINavigationController *)navigationController didShowViewController:(UIViewController *)viewController animated:(BOOL)animated
{
NSArray <UIView *> *naviBarSubviews = self.navigationBar.subviews;
for (UIView *subView in naviBarSubviews) {
if ([subView isKindOfClass:NSClassFromString(@"_UIBarBackground")]) {
if (ScreenSize_X == [XXContextInfo deviceScreenSize]) {
subView.frame = CGRectMake(0, -44, kXXScreenWidth, 88);
} else {
subView.frame = CGRectMake(0, -20, kXXScreenWidth, 64);
}
}
}
}
這樣處理十分麻煩,還很low,最後看到其他同學分享的處理方法,問題才得到徹底處理。方法就是找到IQKeyboardManager框架中IQUIView+Hierarchy.m檔案,修改 -(UIViewController *)topMostController 方法中的程式碼程式碼如下。
- (UIViewController *)topMostController
{
UIViewController *rootController = [UIApplication sharedApplication].keyWindow.rootViewController;
if ([rootController isKindOfClass:[UITabBarController class]]) {
UITabBarController *tabBarController = (UITabBarController *)rootController;
UINavigationController *navController = tabBarController.selectedViewController;
UIViewController *viewController = (UIViewController *)navController.visibleViewController;
while (viewController.presentedViewController) {
viewController = (UIViewController *)viewController.presentedViewController;
}
return viewController;
} else if ([rootController isKindOfClass:[UINavigationController class]]) {
UINavigationController *navController = (UINavigationController *)rootController;
return navController.visibleViewController;
} else if ([rootController isKindOfClass:[UIViewController class]]) {
return rootController;
} else {
return nil;
}
}