Better ways to use IOS sdwebimage

<span id="Label3"></p>1. In The. m file that needs to use the network image<p><p><span style="font-size: 18px;">Nsurl *url = [nsurl urlwithstring:imageurlstring];</span></p></p><p><p><span style="font-size: 18px;">UIImage *placeholder = [UIImage imagenamed:@ "placeholder"];</span></p></p><p><p><span style="font-size: 18px;"></span></p></p><p><p><span style="font-size: 18px;"><span style="color: #008000;">//the former: Download failed retry, the latter: low priority, if the TableView is scrolling, then pause the download, so as to avoid the list when scrolling because of the download picture of the lag</span></span></p></p><p><p><span style="font-size: 18px;">Sdwebimageoptions options = sdwebimageretryfailed | sdwebimagelowpriority;</span></p></p><p><p><span style="font-size: 18px;"></span></p></p><p><p><span style="font-size: 18px;">[self.imageview sd_setimagewithurl:url placeholderimage:placeholder options:options progress:^ (NSInteger receivedsize, nsinteger Expectedsize) { <span style="color: #008000;">//segment download, this block may be called multiple times</span></span></p></p><p><p><span style="font-size: 18px;">NSLog (@ "download progress:%f", (double) receivedsize/expectedsize); <span style="color: #008000;">//here You can monitor the progress of the download</span></span></p></p><p><p><span style="font-size: 18px;">} completed:^ (UIImage *image, nserror *error, sdimagecachetype cachetype, nsurl *imageurl) {</span></p></p><p><p><span style="font-size: 18px;">NSLog (@ "----picture loaded---%@", image); <span style="color: #008000;">//here to get pictures, can be divided into functional modules, sub-folder storage, to facilitate the development of DEBUGGING. </span></span></p></p><p><p><span style="font-size: 18px;">}];</span></p></p><p><p></p></p>2. In the APPDELEGATE.M file<p><p><span style="font-size: 18px;">/**</span></p></p><p><p><span style="font-size: 18px;">* This method is called when the app receives a memory warning.</span></p></p><p><p><span style="font-size: 18px;">*/</span></p></p><p><p><span style="font-size: 18px;">-(void) applicationdidreceivememorywarning: (uiapplication *) Application</span></p></p><p><p><span style="font-size: 18px;">{</span></p></p><p><p><span style="font-size: 18px;">Sdwebimagemanager *mgr = [sdwebimagemanager sharedmanager];</span></p></p><p><p><span style="font-size: 18px;"></span></p></p><p><p><span style="font-size: 18px;"><span style="color: #008000;">//1. Cancel the operation being downloaded</span></span></p></p><p><p><span style="font-size: 18px;">[mgr cancelall];</span></p></p><p><p><span style="font-size: 18px;"></span></p></p><p><p><span style="font-size: 18px;"><span style="color: #008000;">//2. Clear the memory cache</span></span></p></p><p><p><span style="font-size: 18px;">[mgr.imagecache clearmemory];</span></p></p><p><p><span style="font-size: 18px;">}</span></p></p><p><p>Better ways to use IOS sdwebimage</p></p></span>