UITabBar，uitabbarcontroller

UITabBar，uitabbarcontroller

for (UIView *tabbarbutton in self.subviews) {

//        NSLog(@"%@",tabbarbutton);

 

        if ([tabbarbutton isKindOfClass:NSClassFromString(@"_UITabBarBackgroundView")]) {

            [tabbarbutton setValue:[UIColor orangeColor] forKeyPath:@"backgroundColor"];

            for (UIView *obj in tabbarbutton.subviews) {

                NSLog(@"obj:%@",obj);

                obj.backgroundColor = [UIColor redColor];

                for (UIView *v1 in obj.subviews) {

                    NSLog(@"v1_____:%@",v1);

                    if ([v1 isKindOfClass:NSClassFromString(@"_UIBackdropEffectView")]) {

                        v1.backgroundColor = [UIColor blueColor];

                        [v1 removeFromSuperview];

                    }

                }

                if ([obj isKindOfClass:NSClassFromString(@"_UIBackdropView")]) {

                    [obj removeFromSuperview];

                }

            }

        }

        if ([tabbarbutton isKindOfClass:NSClassFromString(@"UITabBarButton")]) {

            for (UIView *view in tabbarbutton.subviews) {

//                NSLog(@"%@",view);

                if ([view isKindOfClass:NSClassFromString(@"UITabBarSelectionIndicatorView")]) {

                    view.backgroundColor = [UIColor redColor];

                    view.layer.borderWidth = 2;

                    view.layer.borderColor = [UIColor blackColor].CGColor;

                }

            }

        }

    }

 

遍曆的正是的結構，中間那個加號按鈕是我自己另外加上去的，其它四個則分別代表一個控制器的tabbar

控制器是使用這個方法添加上去的:

 

如果你不想用許多button、view定製tabbar，那你就需要徹底的瞭解系統tabbar的結構，然後再去修改他的控制屬性和結構，這遍文章正是對UITabBar徹底的解剖

 

 

第一層的遍曆結果：

 

<_UITabBarBackgroundView: 0x12fe364a0; frame = (0 0; 375 49); autoresize = W; userInteractionEnabled = NO; layer = <CALayer: 0x1702217c0>>

 

看這一個的frame為(0 0; 375 49)及名字，那肯定是tabbar的背景圖了,這個背景圖下邊還有好幾層view，所以如你遍曆到時這裡的時候去設定_UITabBarBackgroundView的背景色的話是看不見的，因為這個_UITabBarBackgroundView在倒數第二層，最底有一個view暫時還不知道是幹什麼的，結合代碼看:

_UITabBarBackgroundView 的下層 >> _UIBackdropView  >>  _UIBackdropEffectView 此時如果去改_UIBackdropEffectView的backcolor的話，是能看出效果的，只是好像有內建的半透明效果無法改變，或者我們把_UIBackdropView這個view removeFromSuperview,再設定_UITabBarBackgroundView的backcolor就能看到效果了

 

 

這一個名字是UIButton。那肯定是我另外添加的中間那個按鈕

<UIButton: 0x12fd12650; frame = (155.5 2.5; 64 44); opaque = NO; layer = <CALayer: 0x174223680>>

 

下面這四個UITabBarButton分別代表四個控制器的tabbar按鈕

<UITabBarButton: 0x12fd14620; frame = (2 1; 90 48); opaque = NO; layer = <CALayer: 0x174223a80>>

<UITabBarButton: 0x12fd19d00; frame = (96 1; 90 48); opaque = NO; layer = <CALayer: 0x1742246e0>>

<UITabBarButton: 0x12fd1d7e0; frame = (190 1; 89 48); opaque = NO; layer = <CALayer: 0x174224e20>>

<UITabBarButton: 0x12fe2fba0; frame = (283 1; 90 48); opaque = NO; layer = <CALayer: 0x170233e80>>

 

下面這一個UIImageView則是整條tabbar上邊邊緣的一個view，一般這個我們不會去改它，如，紅色線條的位置：

<UIImageView: 0x12fe1cab0; frame = (0 -0.5; 375 0.5); autoresize = W; userInteractionEnabled = NO; layer = <CALayer: 0x1702356a0>>

 

 

第二層的遍曆結果：

UITabBarSelectionIndicatorView代表中豎直紅色黑色的那塊view，注意：這個view需要在設定了這個self.selectionIndicatorImage屬性時才會存在

<UITabBarSelectionIndicatorView: 0x14f6278f0; frame = (0 0; 90 48); opaque = NO; userInteractionEnabled = NO; layer = <CALayer: 0x174224cc0>>

 

UITabBarSwappableImageView就是中紅色方塊的view

<UITabBarSwappableImageView: 0x14f52a440; frame = (0 0; 30 30); opaque = NO; userInteractionEnabled = NO; layer = <CALayer: 0x170221d80>>

 

UITabBarButtonLabel 就不用多說了，就是下面那個label了,看text也可以

<UITabBarButtonLabel: 0x14f528400; frame = (0 0; 26 16); text = '首頁'; opaque = NO; userInteractionEnabled = NO; layer = <_UILabelLayer: 0x170281180>>

 

<UITabBarSwappableImageView: 0x14f619f30; frame = (0 0; 30 30); opaque = NO; userInteractionEnabled = NO; layer = <CALayer: 0x174223840>>

<UITabBarButtonLabel: 0x14f61aa50; frame = (0 0; 26 16); text = '訊息'; opaque = NO; userInteractionEnabled = NO; layer = <_UILabelLayer: 0x17409eb90>>

 

<UITabBarSwappableImageView: 0x14f622080; frame = (0 0; 30 30); opaque = NO; userInteractionEnabled = NO; layer = <CALayer: 0x174223f80>>

<UITabBarButtonLabel: 0x14f6216d0; frame = (0 0; 26 16); text = '發現'; opaque = NO; userInteractionEnabled = NO; layer = <_UILabelLayer: 0x17409f590>>

 

<UITabBarSwappableImageView: 0x14f6274b0; frame = (0 0; 30 30); opaque = NO; userInteractionEnabled = NO; layer = <CALayer: 0x174224ac0>>

<UITabBarButtonLabel: 0x14f626060; frame = (0 0; 13 16); text = '我'; opaque = NO; userInteractionEnabled = NO; layer = <_UILabelLayer: 0x17409fae0>>