XML文件建立已经Apache服务器建立已经在上一篇介绍过,此处不再多过阐述
正文:
添加jar包
implementation 'com.squareup.okhttp3:okhttp:3.4.1'
闭包里申请网络权限
<uses-permission android:name="android.permission.INTERNET"/>
布局文件中就一个Button,此处不再阐述,解析的XML数据将以日志方式体现
MainActivity.java代码如下:
public class MainActivity extends AppCompatActivity {
private Button Request;
private TextView ResponseText;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Request = (Button) findViewById(R.id.Click);
ResponseText = (TextView) findViewById(R.id.Response);
Request.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
SendRequestToOkhttp();
}
});
}
private void SendRequestToOkhttp() {
new Thread(new Runnable() {
@Override
public void run() {
try {
OkHttpClient Client = new OkHttpClient();
Request request = new Request.Builder().url("http://192.168.0.60/data.xml").build();//发送请求
Response response = Client.newCall(request).execute();//发送请求并获取服务器返回的数据
String ResponseData = response.body().string();//获取具体数据
ParseXMLWithPull(ResponseData);//显示数据
} catch (Exception e) {
e.printStackTrace();
}
}
}).start();
}
private void ParseXMLWithPull(String XMLData){
try{
XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
XmlPullParser xmlPullParser = factory.newPullParser();
xmlPullParser.setInput(new StringReader(XMLData));
int eventType = xmlPullParser.getEventType();//设置初始节点
String id = "";
String name = "";
String version = "";
while (eventType != XmlPullParser.END_DOCUMENT){
String nodename = xmlPullParser.getName();
//判断标签类型
switch (eventType){
//开始解析
case XmlPullParser.START_TAG:{//开始标签
if ("id".equals(nodename)){
id = xmlPullParser.nextText();
}else if ("name".equals(nodename)){
name = xmlPullParser.nextText();
}else if ("version".equals(nodename)){
version = xmlPullParser.nextText();
}
break;
}
case XmlPullParser.END_TAG:{//结束标签
if ("app".equals(nodename)){
Log.d("ID = ",id+"");
Log.d("Name = ",name+"");
Log.d("Version = ",version+"");
}
break;
}
}
eventType = xmlPullParser.next();
}
}catch (Exception e){
e.printStackTrace();
}
}
}