IOS about Auto-carousel Pictures
Last Update:2015-07-03
Source: Internet
Author: User
<span id="Label3"></p><pre> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">Initialize the current view</span></span>_currentimageview =<span style="color: #000000;"><span style="color: #000000;">[[uiimageview alloc] init]; [_currentimageview Setimagewithurl:[nsurl urlwithstring:[array_pic objectatindex:</span></span><span style="color: #800080;"><span style="color: #800080;">0</span></span><span style="color: #000000;"><span style="color: #000000;">]]]; _currentimageview.frame</span></span>= CGRectMake (myScroller.frame.size.width,<span style="color: #800080;"><span style="color: #800080;">0</span></span>, myScroller.frame.size.width,<span style="color: #800080;"><span style="color: #800080;"></span> the</span><span style="color: #000000;"><span style="color: #000000;">);</span></span><span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">_currentimageview.contentmode = uiviewcontentmodescaleaspectfill;</span></span><span style="color: #000000;"><span style="color: #000000;">[myscroller addsubview:_currentimageview]; _nextimageview</span></span>=<span style="color: #000000;"><span style="color: #000000;">[[uiimageview alloc] init]; [_nextimageview Setimagewithurl:[nsurl urlwithstring:[array_pic objectatindex:</span></span><span style="color: #800080;"><span style="color: #800080;">1</span></span><span style="color: #000000;"><span style="color: #000000;">]]]; _nextimageview.frame</span></span>= CGRectMake (myScroller.frame.size.width *<span style="color: #800080;"><span style="color: #800080;">2</span></span>,<span style="color: #800080;"><span style="color: #800080;">0</span></span>, myScroller.frame.size.width,<span style="color: #800080;"><span style="color: #800080;"></span> the</span><span style="color: #000000;"><span style="color: #000000;">);</span></span><span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">_nextimageview.contentmode = uiviewcontentmodescaleaspectfill;</span></span><span style="color: #000000;"><span style="color: #000000;">[myscroller addsubview:_nextimageview]; </span></span><span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">Initialize the previous view</span></span>_previousview =<span style="color: #000000;"><span style="color: #000000;">[[uiimageview alloc] init]; [_previousview Setimagewithurl:[nsurl urlwithstring:[array_pic objectatindex:</span></span><span style="color: #800080;"><span style="color: #800080;">3</span></span><span style="color: #000000;"><span style="color: #000000;">]]]; _previousview.frame</span></span>= CGRectMake (<span style="color: #800080;"><span style="color: #800080;">0</span></span>,<span style="color: #800080;"><span style="color: #800080;">0</span></span>, myScroller.frame.size.width,<span style="color: #800080;"><span style="color: #800080;"></span> the</span><span style="color: #000000;"><span style="color: #000000;">);</span></span><span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">_previousview.contentmode = uiviewcontentmodescaleaspectfill;</span></span><span style="color: #000000;"><span style="color: #000000;">[myscroller addsubview:_previousview]; } {smpagecontrol</span></span>*pagecontrol =<span style="color: #000000;"><span style="color: #000000;">[[smpagecontrol alloc] init]; [pagecontrol Setframe:cgrectmake (</span></span><span style="color: #800080;"><span style="color: #800080;">0</span></span>, myscroller.frame.size.height+<span style="color: #800080;"><span style="color: #800080;"></span> -</span>-<span style="color: #800080;"><span style="color: #800080;">10.0f</span></span>, myScroller.frame.size.width,<span style="color: #800080;"><span style="color: #800080;">10.0f</span></span><span style="color: #000000;"><span style="color: #000000;">)]; [pagecontrol setnumberofpages:</span></span><span style="color: #800080;"><span style="color: #800080;">4</span></span><span style="color: #000000;"><span style="color: #000000;">]; [pagecontrol Setbackgroundcolor:[uicolor clearcolor]; [pagecontrol setcurrentpage:</span></span><span style="color: #800080;"><span style="color: #800080;">0</span></span><span style="color: #000000;"><span style="color: #000000;">]; [pagecontrol Setcurrentpageindicatortintcolor:[uicolor lightgraycolor]; [pagecontrol Setpageindicatortintcolor:[uicolor graycolor]; Mypagecontrol</span></span>=<span style="color: #000000;"><span style="color: #000000;">pagecontrol; [self.view addsubview:mypagecontrol]; }</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>(!<span style="color: #000000;"><span style="color: #000000;">[mytimer IsValid]) {mytimer</span></span>=[nstimer Scheduledtimerwithtimeinterval:<span style="color: #800080;"><span style="color: #800080;">5</span></span><span style="color: #000000;"><span style="color: #000000;">target:self selector: @selector (updateauto) userinfo:nil repeats:yes]; }</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">#pragma</span></span>Mark Clock Animation call method-(<span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span><span style="color: #000000;"><span style="color: #000000;">) updateauto{</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span><span style="color: #000000;"><span style="color: #000000;">(_isdraging) {</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">return</span></span><span style="color: #000000;"><span style="color: #000000;">; } cgpoint offset</span></span>=<span style="color: #000000;"><span style="color: #000000;">myscroller.contentoffset; Offset.x</span></span>+=<span style="color: #000000;"><span style="color: #000000;">self.view.frame.size.width; </span></span><span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>(offset.x > self.view.frame.size.width*<span style="color: #800080;"><span style="color: #800080;">2</span></span><span style="color: #000000;"><span style="color: #000000;">) {offset.x</span></span>=<span style="color: #000000;"><span style="color: #000000;">self.view.frame.size.width; } [myscroller setcontentoffset:offset animated:yes];}</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">#pragma</span></span>Mark-proxy method<span style="color: #0000ff;"><span style="color: #0000ff;">#pragma</span></span>Mark is ready to start dragging-(<span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span>) scrollviewwillbegindragging: (uiscrollview *<span style="color: #000000;"><span style="color: #000000;">) ScrollView {_isdraging</span></span>=<span style="color: #000000;"><span style="color: #000000;">YES; } </span></span><span style="color: #0000ff;"><span style="color: #0000ff;">#pragma</span></span>Mark View Stops scrolling-(<span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span>) scrollviewdidenddecelerating: (uiscrollview *<span style="color: #000000;"><span style="color: #000000;">) ScrollView {_isdraging</span></span>=<span style="color: #000000;"><span style="color: #000000;">NO;}</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">#pragma</span></span>Mark has dragged-(<span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span>) Scrollviewdidscroll: (uiscrollview *<span style="color: #000000;"><span style="color: #000000;">) scrollview{</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Static</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span>i =<span style="color: #800080;"><span style="color: #800080;">0</span></span>;<span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">The first few pictures are currently displayed</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">float</span></span>offset =<span style="color: #000000;"><span style="color: #000000;">scrollview.contentoffset.x; </span></span><span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>(_nextimageview.image = = Nil | | _previousview.image = =<span style="color: #000000;"><span style="color: #000000;">Nil) { </span></span><span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">load the next view</span></span>[_nextimageview Setimagewithurl:[nsurl urlwithstring:[array_pic objectatindex:i = = kCount?<span style="color: #800080;"><span style="color: #800080;">0</span></span>: i+<span style="color: #800080;"><span style="color: #800080;">1</span></span><span style="color: #000000;"><span style="color: #000000;">]]]; </span></span><span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">Load Previous View</span></span>[_previousview Setimagewithurl:[nsurl urlwithstring:[array_pic objectatindex:i = =<span style="color: #800080;"><span style="color: #800080;">0</span></span>? kcount:i-<span style="color: #800080;"><span style="color: #800080;">1</span></span><span style="color: #000000;"><span style="color: #000000;">]]]; } </span></span><span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>(offset = =<span style="color: #800080;"><span style="color: #800080;">0</span></span><span style="color: #000000;"><span style="color: #000000;">) {_currentimageview.image</span></span>=<span style="color: #000000;"><span style="color: #000000;">_previousview.image; Scrollview.contentoffset</span></span>= Cgpointmake (scrollView.bounds.size.width,<span style="color: #800080;"><span style="color: #800080;">0</span></span><span style="color: #000000;"><span style="color: #000000;">); _previousview.image</span></span>=<span style="color: #000000;"><span style="color: #000000;">nil; </span></span><span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>(i = =<span style="color: #800080;"><span style="color: #800080;">0</span></span><span style="color: #000000;"><span style="color: #000000;">) {i</span></span>=<span style="color: #000000;"><span style="color: #000000;">kcount; }</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Else</span></span><span style="color: #000000;"><span style="color: #000000;">{i</span></span>-=<span style="color: #800080;"><span style="color: #800080;">1</span></span><span style="color: #000000;"><span style="color: #000000;">; } } </span></span><span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>(offset = = ScrollView.bounds.size.width *<span style="color: #800080;"><span style="color: #800080;">2</span></span><span style="color: #000000;"><span style="color: #000000;">) {_currentimageview.image</span></span>=<span style="color: #000000;"><span style="color: #000000;">_nextimageview.image; Scrollview.contentoffset</span></span>= Cgpointmake (scrollView.bounds.size.width,<span style="color: #800080;"><span style="color: #800080;">0</span></span><span style="color: #000000;"><span style="color: #000000;">); _nextimageview.image</span></span>=<span style="color: #000000;"><span style="color: #000000;">nil; </span></span><span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>(i = =<span style="color: #000000;"><span style="color: #000000;">Kcount) {i</span></span>=<span style="color: #800080;"><span style="color: #800080;">0</span></span>;<span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;">resets <span style="color: #008000;">to 0 if the current picture index is the last, otherwise +1</span></span>}<span style="color: #0000ff;"><span style="color: #0000ff;">Else</span></span><span style="color: #000000;"><span style="color: #000000;">{i</span></span>+=<span style="color: #800080;"><span style="color: #800080;">1</span></span><span style="color: #000000;"><span style="color: #000000;">; }} [mypagecontrol setcurrentpage:i];}</span></span></pre><p><p></p></p><p><p>IOS about Auto-carousel Pictures</p></p></span>
