How to get the music list for IOS-music player

Source: Internet
Author: User
Tags vars
<span id="Label3"></p><p><p></p></p><p><p><strong>Method One:</strong></p></p><p><p><strong>The method is to get the path of the music by getting to the sandbox path (use this method to put the music into the Sandbox)</strong></p></p> <ol class="dp-objc" start="1"> <li class="alt"><li class="alt"><span class="keyword">Nsfilemanager *manager = [nsfilemanager<span class="vars"> defaultmanager]; </span></span></li></li> <li><li><span class="keyword">NSString *documents = [nshomedirectory ()<span class="vars"> stringbyappendingpathcomponent:<span class="string">@ "Documents"]; </span></span></span></li></li> <li class="alt"><li class="alt">NSLog (<span class="string">@ "%@", Documents); </span></li></li> <li><li><span class="keyword">NSString *localstr = [[nsstring<span class="vars"> alloc]<span class="vars"> initwithformat:<span class="string">@ "%@/music", Documents]; </span></span></span></span></li></li> <li class="alt"><li class="alt">NSLog (<span class="string">@ "%@", localstr); </span></li></li> <li><li><span class="keyword">Nsarray *localarr = [[nsarray<span class="vars"> alloc]<span class="vars"> init]; </span></span></span></li></li> <li class="alt"><li class="alt">Localarr = [manager<span class="vars"> contentsofdirectoryatpath:localstr<span class="vars"> error<span class="keyword">: nil]; </span></span></span></li></li> <li><li><span class="keyword">for (<span class="keyword">int i = <span class="xcodenumber">0;i < Localarr<span class="xcodeconstants">. count;i++) {</span> </span> </span></span></li></li> <li class="alt"><li class="alt"><span class="keyword">nsstring *str<span class="xcodenumber">1 = [[nsstring<span class="vars"> alloc]<span class="vars"> init]; </span></span></span></span></li></li> <li><li>str<span class="xcodenumber">1 = [localarr<span class="vars"> objectatindex:i]; </span></span></li></li> <li class="alt"><li class="alt"><span class="keyword">MyMusic *music = [[mymusic<span class="vars"> alloc]<span class="vars"> init]; </span></span></span></li></li> <li><li>Music<span class="xcodeconstants">. Path = [nsstring<span class="vars"> stringwithformat:<span class="string">@ "%@/%@", localstr,str<span class="xcodenumber">1]; </span></span></span></span></li></li> <li class="alt"><li class="alt">NSLog (<span class="string">@ "%@", music<span class="xcodeconstants">. path); </span></span></li></li> <li><li><span class="keyword">if ([[str<span class="xcodenumber">1<span class="vars"> pathextension]<span class="vars"> isequaltostring:<span class="string">@ "mp3"]) {</span> </span> </span> </span> </span></li></li> <li class="alt"><li class="alt">Nsuinteger a = str<span class="xcodenumber">1<span class="xcodeconstants">. length-<span class="xcodenumber">4; </span></span></span></li></li> <li><li>Nsrange range = {<span class="xcodenumber">0,a}; </span></li></li> <li class="alt"><li class="alt">str<span class="xcodenumber">1 = [str<span class="xcodenumber">1<span class="vars"> substringwithrange:range]; </span></span></span></li></li> <li><li>Music<span class="xcodeconstants">. name = str<span class="xcodenumber">1; </span></span></li></li> <li class="alt"><li class="alt">[<span class="keyword">self<span class="xcodeconstants">. Musicarray<span class="vars"> addobject:music]; </span></span></span></li></li> <li><li>}</li></li> <li class="alt"><li class="alt">}</li></li> </ol><p><p></p></p><p><p></p></p><p><p>Method Two:</p></p><p><p><strong>By accessing the ipod Music library (this method seems to have to be debugged by the real machine, because there is no ipod music library on the Emulator)</strong></p></p><p><p></p></p> <ol class="dp-objc" start="1"> <li class="alt"><li class="alt"><span class="keyword">Mpmediaquery *listquery = [mpmediaquery<span class="vars"> songsquery]; <span class="comment"> Playlistsquery</span> </span></span></li></li> <li><li><span class="keyword">Nsarray *playlist = [listquery<span class="vars"> collections]; </span></span></li></li> <li class="alt"><li class="alt"><span class="keyword">Mpmediaquery *listquery = [[mpmediaquery<span class="vars"> alloc]<span class="vars"> init]; </span></span></span></li></li> <li><li><span class="keyword">Nsarray *playlist = [listquery<span class="vars"> items]; </span></span></li></li> <li class="alt"><li class="alt"><span class="keyword">For (<span class="keyword">mpmediaplaylist *list in Playlist) {</span></span></li></li> <li><li><span class="keyword">Nsarray *songs = [list<span class="vars"> items]; </span></span></li></li> <li class="alt"><li class="alt">for <span class="keyword">(<span class="keyword">mpmediaitem *song in Songs) {</span> </span></li></li> <li><li><span class="keyword">nsstring *title = [song<span class="vars"> valueforproperty:mpmediaitempropertytitle]; </span></span></li></li> <li class="alt"><li class="alt"><span class="keyword">nsstring *artlist = [song<span class="vars"> valueforproperty:mpmediaitempropertyartist]; </span></span></li></li> <li><li><span class="keyword">if (artlist! =<span class="keyword"> Nil &&![ self <span class="keyword"><span class="xcodeconstants">. Musicarray<span class="vars"> containsobject:title]) {</span> </span> </span> </span> </span></li></li> <li class="alt"><li class="alt">[<span class="keyword">self<span class="xcodeconstants">. Musicarray<span class="vars"> addobject:title]; </span></span></span></li></li> <li><li>}</li></li> <li class="alt"><li class="alt">}</li></li> <li><li>}</li></li> </ol><p><p></p></p><p><p><br><strong>Method Three:</strong></p></p><p><p><strong>scan Local Music path (this method just puts the music into Xcode.)</strong></p></p> <ol class="dp-objc" start="1"> <li class="alt"><li class="alt"><span class="keyword">NSString *song = [[nsstring<span class="vars"> alloc]<span class="vars"> init]; </span></span></span></li></li> <li><li><span class="keyword">NSString *singer = [[nsstring<span class="vars"> alloc]<span class="vars"> init]; </span></span></span></li></li> <li class="alt"><li class="alt"><span class="keyword">UIImage *img;</span></li></li> <li><li><span class="keyword">NSString *resourcepath = [[nsbundle<span class="vars"> mainbundle]<span class="vars"> resourcepath]; </span></span></span></li></li> <li class="alt"><li class="alt">NSLog (<span class="string">@ "resourcepath =%@", resourcepath); </span></li></li> <li><li><span class="comment">Remove all MP3 files from the resource directory</span></li></li> <li class="alt"><li class="alt"><span class="comment">Nsarray *filearray = [[nsbundle mainbundle] pathsforresourcesoftype:@ "mp3" indirectory:resourcepath];</span></li></li> <li><li><span class="keyword">Nsarray *mp<span class="xcodenumber">3Array = [nsbundle<span class="vars"> pathsforresourcesoftype:<span class="string">@ "mp3"<span class="vars"> indirectory:[[nsbundle<span class="vars"> mainbundle]  <span class="vars">resourcepath]]; </span></span></span></span></span></span></span></li></li> <li class="alt"><li class="alt"></li></li> <li><li><span class="keyword">For (<span class="keyword">NSString *filepath in MP<span class="xcodenumber">3Array) {</span> </span></span></li></li> <li class="alt"><li class="alt">NSLog (<span class="string">@ "%@", filePath); </span></li></li> <li><li><span class="keyword">Nsurl *fileurl = [nsurl<span class="vars"> fileurlwithpath:filepath]; </span></span></li></li> <li class="alt"><li class="alt"><span class="keyword">avurlasset *mp<span class="xcodenumber">3Asset = [avurlasset<span class="vars"> urlassetwithurl:fileurl<span class="vars"> options<span class="keyword">: nil]; </span></span></span></span></span></li></li> <li><li>for <span class="keyword">(<span class="keyword">nsstring *format in [mp<span class="xcodenumber">3Asset<span class="vars"> availablemetadataformats]) {</span> </span> </span> </span></li></li> <li class="alt"><li class="alt">NSLog (<span class="string">@ "%@", format); </span></li></li> <li><li>for <span class="keyword">(<span class="keyword">avmetadataitem *metadataitem in [mp<span class="xcodenumber">3Asset<span class="vars"> metadataforformat:format]) {</span> </span> </span> </span></li></li> <li class="alt"><li class="alt">NSLog (<span class="string">@ "%@", metadataitem); </span></li></li> <li><li>img =<span class="keyword"> nil; </span></li></li> <li class="alt"><li class="alt"><span class="keyword">if ([metadataitem<span class="xcodeconstants">. Commonkey<span class="vars"> isequaltostring:<span class="string">@ "title"]) {</span> </span> </span> </span></li></li> <li><li>Song = (<span class="keyword">nsstring *) metadataitem<span class="xcodeconstants">. value; </span></span></li></li> <li class="alt"><li class="alt">}<span class="keyword">Else <span class="keyword">if ([metadataitem<span class="xcodeconstants">. Commonkey<span class="vars"> isequaltostring:<span class="string">@ "artist"]) {</span> </span> </span> </span> </span></li></li> <li><li>Singer = (<span class="keyword">nsstring *) metadataitem<span class="xcodeconstants">. value; </span></span></li></li> <li class="alt"><li class="alt">}</li></li> <li><li><span class="keyword">Else <span class="keyword">if ([metadataitem<span class="xcodeconstants">. Commonkey<span class="vars"> isequaltostring:<span class="string">@ "artwork"]) {</span> </span> </span> </span> </span></li></li> <li class="alt"><li class="alt"><span class="keyword">NSData *data = (nsdata*) (metadataitem<span class="xcodeconstants">. value); </span></span></li></li> <li><li>img = [UIImage<span class="vars"> imagewithdata:data]; </span></li></li> <li class="alt"><li class="alt">}</li></li> <li><li></li></li> <li class="alt"><li class="alt"><span class="comment">or else if ([metadataitem.commonkey isequaltostring:@ "albumname"]) {</span></li></li> <li><li><span class="comment">//albumname = (nsstring *) metadataitem.value; </span></li></li> <li class="alt"><li class="alt"><span class="comment">//                }  </span></li></li> <li><li><span class="comment">or else if ([metadataitem.commonkey isequaltostring:@ "artwork"]) {</span></li></li> <li class="alt"><li class="alt"><span class="comment">//nsdictionary *dict = (nsdictionary *) metadataitem.value; </span></li></li> <li><li><span class="comment">//nsdata *data = [dict objectforkey:@ "data"]; </span></li></li> <li class="alt"><li class="alt"><span class="comment">//<pre name= "code" class= "html" >if ([metadataitem.commonkey isequaltostring:@ "artwork"]) {</span></li></li> <li><li><span class="keyword">nsdictionary *dict = (<span class="keyword">nsdictionary *) metadataitem<span class="xcodeconstants">. value; </span></span></span></li></li> <li class="alt"><li class="alt"><span class="keyword">NSData *data = [dict<span class="vars"> objectforkey:<span class="string">@ "data"]; </span></span></span></li></li> <li><li>Image = [UIImage<span class="vars"> imagewithdata:data]; </span></li></li> <li class="alt"><li class="alt"><span class="keyword">self<span class="xcodeconstants">. Albumimage<span class="xcodeconstants">. Image = image; </span></span></span></li></li> </ol><p><p><br>Image = [UIImage imagewithdata:data]; Self.albumImage.image = image; }} MyMusic *music = [[mymusic alloc] init]; Music.name = song; Music.singername = singer; Music.path = filePath; Music.image = img; NSLog (@ "%@,%@", music.name, music.singername); [self.musicarray addobject:music]; } }}</p></p><p><p></p></p><pre><pre></pre></pre><p><p>This method about getting music album Pictures I found the way to find the night is the following sentence</p></p><p><p></p></p><p><p><span class="string"> <span class="keyword"> <span class="string"> <span class="keyword">if ([metadataitem<span class="xcodeconstants">. Commonkey<span class="vars"> isequaltostring:<span class="string">@ "artwork"]) {</span> </span> </span> </span></span></span></span></p></p> <ol class="dp-objc" start="1"> <ol class="dp-objc" start="1"> <li><span class="keyword">Nsdictionary *dict = (<span class="keyword">nsdictionary *) metadataitem<span class="xcodeconstants">. value; </span></span></span></li> <li class="alt"><span class="keyword">NSData *data = [dict<span class="vars"> objectforkey:<span class="string">@ "data"]; <span class="comment"> @ "value"</span> </span> </span></span></li> <li class="alt">Image = [UIImage<span class="vars"> imagewithdata:data]; </span></li> <li class="alt"><span class="keyword">Self<span class="xcodeconstants">. Albumimage<span class="xcodeconstants">. Image = image; </span></span></span></li> </ol> </ol><p><p>How to get the music list for IOS-music player</p></p></span>
Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.