iOS ScrollView to add animation effects, automatic scrolling uiscrollview, using the Nstimer

Reproduced from: http://blog.csdn.net/z343929897/article/details/7974753

In accordance with the general requirements of Zhao, the top of the front page need to add ads, originally thought quite complex, it is very simple

Add a statement to the page controller in the class's declaration file (. h):

@property (Strong, nonatomic) Iboutlet Uipagecontrol *page;
@property (Strong, nonatomic) Iboutlet Uiscrollview *imagescrollview;

Then in the implementation file (. m), add the

@synthesize page;
@synthesize Imagescrollview;

Implements the automatic accessor of the Page object. Rewrite the Viewdidload method as follows

-(void) viewdidload {[Super viewdidload]; This defines the size of the scrolling view, whether it supports paging, whether a horizontal scrolling indicator is displayed, which imagescrollview.contentsize = Cgsizemake (Pagenum * 320.0f,
    ImageScrollView.frame.size.height);
    imagescrollview.pagingenabled = YES;
    Imagescrollview.showshorizontalscrollindicator = NO;

    Imagescrollview.delegate = self; This adds a child view for the scrolling view, and in order to add a follow-up operation, the child view I defined here is the key UIButton for (int i = 0; i < pagenum; i++) {NSString * fileName = [N
        Sstring stringwithformat:@ "%d.jpg", i+1];
        UIButton *imagebutton = [[UIButton alloc] Initwithframe:cgrectmake (i * 320.0f, 0.0f, 320.0f, 218.0f)];
        [ImageButton setbackgroundimage:[uiimage Imagenamed:filename] forstate:uicontrolstatenormal];
        Imagebutton.tag = 900 + i;
    [Imagescrollview Addsubview:imagebutton];
   //define Pagecontroller Set total number of pages, current page, define the action to be triggered when the control is manipulated by the user.
    0 2page.numberofpages = pagenum;
    page.currentpage = 0; [Page addtarget:self action: @selector (Pageturn:) forcontrolevents:uicontroleventValueChanged];
    Use the Nstimer implementation to trigger the scrolling action of a scrolling control on a timed basis.
    Timecount = 0;

[Nstimer scheduledtimerwithtimeinterval:5 target:self selector: @selector (Scrolltimer) Userinfo:nil Repeats:yes]; }

Add two animation and auto page-flipping functions

Scrolling animation effect
-(void) Pageturn: (Uipagecontrol *) apagecontrol{
    int whichpage = apagecontrol.currentpage;
    [UIView Beginanimations:nil context:null];
    [UIView setanimationduration:0.3f];
    [UIView setanimationcurve:uiviewanimationcurveeaseinout];
    [Imagescrollview setcontentoffset:cgpointmake (320.0f * whichpage, 0.0f) Animated:yes];
    [UIView commitanimations];
}

Timed scrolling
-(void) scrolltimer{
    timecount + +;
    if (Timecount = = pagenum) {
        timecount = 0;
    }

	Chenyong in this place add self.pageController.currentpage = Timecount; You can change the Pagecon, remember not to add to the bottom of the timecount++

    [Imagescrollview scrollrecttovisible:cgrectmake (Timecount * 320.0, 65.0, 320.0, 218.0) Animated:yes];