iOS navigation controller common functions and Navigationbar Common Properties

The time of common function triggering of navigation controller

Triggered when view controller's views are going to appear

-(void) Viewwillappear: (BOOL) animated

Triggered when view controller's views already appear

-(void) Viewdidappear: (BOOL) animated

Triggered when view controller's views are going to disappear

-(void) Viewwilldisappear: (BOOL) animated

Triggered when view controller's views have disappeared

-(void) Viewdiddisappear: (BOOL) animated

When the next interface is push by the previous interface, such as a push B, four method execution order a (viewwilldisappear) >b (viewwillappear) >a (viewdiddisappear) >b ( Viewdidappear)

When a previous interface pops up by the latter interface, such as B pop A, four methods of execution order B (viewwilldisappear) >a (viewwillappear) >b (viewdiddisappear) >a ( Viewdidappear)

Navigationbar Common Properties

I. Direct configuration of the Navigationbar, so this action will have an effect on the content displayed on each interface Navigationbar (the effect is the same

)

1. Modify the Navigationbar color

Self.navigationController.navigationBar.barTintColor = [Uicolor redcolor];

2. Turn off the navigationbar effect of the wool glass

Self.navigationController.navigationBar.translucent = NO;

3. Hide the Navigationbar

Self.navigationController.navigationBarHidden = yes;4. Set a picture for Navigationbar

Different sizes of picture effects are different

:

1.320 * 44, will only give Navigationbar

Attached sheet

2. Height less than 44, and greater than 44 and less than 64: tile Navigationbar and display on status bar

3. Height equals 64: Entire picture in Navigationbar

and display on the status bar

[Self.navigationController.navigationBar setbackgroundimage:[uiimage imagenamed:@ "32050"] forbarmetrics: Uibarmetricsdefault];

Two. Individually customize the content displayed on Navigationbar of each interface (different display content for each interface), modify The Navigationitem of the view controller

1. Set the interface's

Title

Self.navigationItem.title = @ "Far East development

”;

2. Modify Titleview (middle display view

)

Uisegmentedcontrol*segment = [[uisegmentedcontrolalloc]initwithitems:@[@ ' group ', @ ' friends ']; self.navigationitem.titleview= segment;

3. Modifications

Navigationbar color Self.navigationController.navigationBar.barTintColor = [Uicolor Whitecolor];

4. Modify the Navigationbar,

Show content on the right

Uibarbuttonitem *right = [[Uibarbuttonitem alloc] Initwithbarbuttonsystemitem:uibarbuttonsystemitemadd target:self Action: @selector (add:)];

Self.navigationItem.rightBarButtonItem = right;

5.

Modify Navigationbar, show content on left

Uibarbuttonitem*left = [[Uibarbuttonitemalloc]initwithbarbuttonsystemitem:uibarbuttonsystemitemaddtarget: Selfaction: @selector

(add:)];

Self.navigationItem.leftBarButtonItem

= left;

iOS navigation controller common functions and Navigationbar Common Properties