Android uses the pull parser to parse an XML file
Last Update:2016-01-05
Source: Internet
Author: User
<span id="Label3"></p><p><p>Learn About:</p></p><pre><span style="color: #008080;"><span style="color: #008080;">1</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;"></span> public</span> <span style="color: #0000ff;"><span style="color: #0000ff;">class</span></span>Mainactivity<span style="color: #0000ff;"><span style="color: #0000ff;">extends</span></span><span style="color: #000000;"><span style="color: #000000;">Activity {</span></span><span style="color: #008080;"><span style="color: #008080;">2</span></span> <span style="color: #008080;"><span style="color: #008080;">3</span></span>List<city><span style="color: #000000;"><span style="color: #000000;">citylist;</span></span><span style="color: #008080;"><span style="color: #008080;">4</span></span> <span style="color: #000000;"><span style="color: #000000;">@Override</span></span><span style="color: #008080;"><span style="color: #008080;">5</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">protected</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span><span style="color: #000000;"><span style="color: #000000;">onCreate (Bundle Savedinstancestate) {</span></span><span style="color: #008080;"><span style="color: #008080;">6</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">Super</span></span><span style="color: #000000;"><span style="color: #000000;">. OnCreate (savedinstancestate);</span></span><span style="color: #008080;"><span style="color: #008080;">7</span></span> <span style="color: #000000;"><span style="color: #000000;">Setcontentview (r.layout.activity_main);</span></span><span style="color: #008080;"><span style="color: #008080;">8</span></span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;">9</span></span> <span style="color: #008080;"><span style="color: #008080;">Ten</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;"></span> public</span> <span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span><span style="color: #000000;"><span style="color: #000000;">Click (View v) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> one</span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">get the resource file to the SRC folder</span></span><span style="color: #008080;"><span style="color: #008080;"></span> a</span>InputStream is = getClassLoader (). getresourceasstream ("weather.xml"<span style="color: #000000;"><span style="color: #000000;">);</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">get the Pull parser object</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span>Xmlpullparser XP =<span style="color: #000000;"><span style="color: #000000;">Xml.newpullparser ();</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">Initialize</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #0000ff;"><span style="color: #0000ff;">Try</span></span><span style="color: #000000;"><span style="color: #000000;"> {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span>Xp.setinput (is, "gbk"<span style="color: #000000;"><span style="color: #000000;">);</span></span><span style="color: #008080;"><span style="color: #008080;"></span> +</span> <span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">gets the event type of the current node, with the event Type's judgment, we can know what node the current node is, thus determining what we should do</span></span><span style="color: #008080;"><span style="color: #008080;"></span> +</span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span>Type =<span style="color: #000000;"><span style="color: #000000;">Xp.geteventtype ();</span></span><span style="color: #008080;"><span style="color: #008080;"></span> a</span>City City =<span style="color: #0000ff;"><span style="color: #0000ff;">NULL</span></span><span style="color: #000000;"><span style="color: #000000;">;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> at</span> <span style="color: #0000ff;"><span style="color: #0000ff;"></span> while</span>(type! =<span style="color: #000000;"><span style="color: #000000;">Xmlpullparser.end_document) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">depending on the type of node, different operations are done</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #0000ff;"><span style="color: #0000ff;">Switch</span></span><span style="color: #000000;"><span style="color: #000000;">(type) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #0000ff;"><span style="color: #0000ff;"></span> case</span><span style="color: #000000;"><span style="color: #000000;">xmlpullparser.start_tag:</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">gets the name of the current node</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>("weather"<span style="color: #000000;"><span style="color: #000000;">. Equals (xp.getname ())) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> in</span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">Create a City collection object to hold the City's JavaBean</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span>CityList =<span style="color: #0000ff;"><span style="color: #0000ff;">New</span></span>Arraylist<city><span style="color: #000000;"><span style="color: #000000;">();</span></span><span style="color: #008080;"><span style="color: #008080;"></span> to</span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;"></span> +</span> <span style="color: #0000ff;"><span style="color: #0000ff;">Else</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>("city"<span style="color: #000000;"><span style="color: #000000;">. Equals (xp.getname ())) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">Create a JavaBean object for</span> city</span><span style="color: #008080;"><span style="color: #008080;"></span> the</span>City =<span style="color: #0000ff;"><span style="color: #0000ff;">New</span></span><span style="color: #000000;">city <span style="color: #000000;">();</span></span><span style="color: #008080;"><span style="color: #008080;"></span> *</span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;"></span> $</span> <span style="color: #0000ff;"><span style="color: #0000ff;">Else</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>("name"<span style="color: #000000;"><span style="color: #000000;">. Equals (xp.getname ())) {</span></span><span style="color: #008080;"><span style="color: #008080;">Panax Notoginseng</span></span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">gets the text of the next node of the current node</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span>String name =<span style="color: #000000;"><span style="color: #000000;">Xp.nexttext ();</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #000000;"><span style="color: #000000;">city.setname (name);</span></span><span style="color: #008080;"><span style="color: #008080;"></span> +</span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;"></span> a</span> <span style="color: #0000ff;"><span style="color: #0000ff;">Else</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>("temp"<span style="color: #000000;"><span style="color: #000000;">. Equals (xp.getname ())) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">gets the text of the next node of the current node</span></span><span style="color: #008080;"><span style="color: #008080;"></span> +</span>String temp =<span style="color: #000000;"><span style="color: #000000;">Xp.nexttext ();</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #000000;"><span style="color: #000000;">city.settemp (temp);</span></span><span style="color: #008080;"><span style="color: #008080;"></span> $</span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;"></span> $</span> <span style="color: #0000ff;"><span style="color: #0000ff;">Else</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>("pm"<span style="color: #000000;"><span style="color: #000000;">. Equals (xp.getname ())) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">gets the text of the next node of the current node</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span>String pm =<span style="color: #000000;"><span style="color: #000000;">Xp.nexttext ();</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #000000;"><span style="color: #000000;">CITY.SETPM (pm);</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;">Wuyi</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;"></span> break</span><span style="color: #000000;"><span style="color: #000000;">;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #0000ff;"><span style="color: #0000ff;"></span> case</span><span style="color: #000000;"><span style="color: #000000;">xmlpullparser.end_tag:</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>("city"<span style="color: #000000;"><span style="color: #000000;">. Equals (xp.getname ())) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> wu</span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">put the City's JavaBean in the collection</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #000000;"><span style="color: #000000;">Citylist.add (city);</span></span><span style="color: #008080;"><span style="color: #008080;"></span> about</span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;"></span> $</span> <span style="color: #0000ff;"><span style="color: #0000ff;"></span> break</span><span style="color: #000000;"><span style="color: #000000;">;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #008080;"><span style="color: #008080;"></span> a</span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">move the pointer to the next node and return the event type for that node</span></span><span style="color: #008080;"><span style="color: #008080;"></span> +</span>Type =<span style="color: #000000;"><span style="color: #000000;">Xp.next ();</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #008080;"><span style="color: #008080;"></span> $</span> <span style="color: #0000ff;"><span style="color: #0000ff;"></span> for</span><span style="color: #000000;"><span style="color: #000000;">(city C:citylist) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #000000;"><span style="color: #000000;">System.out.println (c.tostring ());</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span>}<span style="color: #0000ff;"><span style="color: #0000ff;">Catch</span></span><span style="color: #000000;"><span style="color: #000000;">(Exception E) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">TODO auto-generated Catch block</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #000000;"><span style="color: #000000;">e.printstacktrace ();</span></span><span style="color: #008080;"><span style="color: #008080;"></span> in</span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #008080;"><span style="color: #008080;"></span> about</span>}</pre><span class="cnblogs_code_collapse"><span class="cnblogs_code_collapse">Main.java</span></span><p><p></p></p><p><p>Android uses the pull parser to parse an XML file</p></p></span>
