IOS9 3DTouch (2)--pop/peek

2. In the app, select a content, you can use PEEK (TAP) to preview or use Pop (re-press) switch controller, ians full content

Peek: Tap, preview. 3 different states:

Peek is available, and the other is blurred by the middle grid.

Peek, you can quickly preview the next controller content

Peek+previewaction, quick action

Pop: Generally navigate to the controller previewed in Peek State.

(1) if Forcetouch is available, register

-(void)viewdidload{

[Super Viewdidload];

//register Forcetouch

if(self. Traitcollection. forcetouchcapability = = uiforcetouchcapabilityavailable) {

[self registerforpreviewingwithdelegate:self sourceview:self. View];

}

}

(2) Set up agent and implement proxy method uiviewcontrollerpreviewingdelegate

• -(Uiviewcontroller *)previewingcontext:(ID<UIViewControllerPreviewing>) Previewingcontext viewcontrollerforlocation:(cgpoint)location {
• //Get the cell clicked
• nsindexpath *indexpath = [self. TableView indexpathforrowatpoint:location];
• UITableViewCell *cell = [self. TableView cellforrowatindexpath:indexpath];
• if (! Cell) {
• return nil;
• }
• //pre-peek State, highlighted area
• Previewingcontext. Sourcerect = cell. Frame;
• hcviewcontroller *vc = [[Hcviewcontroller alloc] init];
• VC. LabelText = self . DataList[indexpath. Row];
• //peek Status, the view size displayed
• VC. Preferredcontentsize = cgsizemake (0, 0);
• return VC;
• }
• - (void)previewingcontext:(ID <UIViewControllerPreviewing>) Previewingcontext commitviewcontroller:(uiviewcontroller *)viewcontrollertocommit
• {
• [self. Navigationcontroller pushviewcontroller:viewcontrollertocommit animated:YES];
• }

(3) P the realization of previewaction in EEK

new arrays, storing previewaction

@property (nonatomic,strong) nsarray *arraypreviewactions;

Returns an array of stored previewaction in the Previewactionitems method;

• -(nsarray<ID<UIPreviewActionItem>> *)previewactionitems
• {
• return self . Arraypreviewactions;
• }

Sets the contents of the Previewaction array and implements the function. (i.e. quick action)

• -(void)viewdidload{
• [Super Viewdidload];
• self. View. BackgroundColor = [uicolor whitecolor];
• [Self label];
• //Set previewactions
• self. Arraypreviewactions = @[
•                             [uipreviewaction Actionwithtitle:@< Span class= "S8" > "OK" Style:uipreviewactionstyledefault handler :^ (Uipreviewaction * _ Nonnull Action, uiviewcontroller * _nonnull Previewviewcontroller {
• NSLog (@"Press OK");
• }],
•                             [uipreviewaction Actionwithtitle:@< Span class= "S8" > "Cancel" Style:uipreviewactionstyledestructive Handler:^ (Uipreviewaction * _nonnull Action, uiviewcontroller * _nonnull Previewviewcontroller) {
• NSLog (@"Press Cancel");
• }],
• ];
• }

IOS9 3DTouch (2)--pop/peek