Android SOAP XML 解析 ListView 错误
Android SOAP XML 解析 ListView 错误
我正在创建一个SOAP XML解析的ListView。
我正在添加(ksoap2-android-assembly-2.6.2-jar-with-dependencies.jar) jar文件。
我正在添加权限。
我正在使用ArrayList。
我不明白这个错误，请帮助我。
MainActivity.java
public class MainActivity extends ListActivity {
// XML节点键
static final String FORMMODEL = "FormModel";
static final String TEXT1 = "Text1";
static final String TEXT2 = "Text2";
static final String TEXT3 = "Text3";
private static final String METHOD_NAME = "HelloWorld";
private static final String SOAP_ACTION = "http://tempuri.org/HelloWorld";
private static final String NAMESPACE = "http://tempuri.org/";
private static final String URL = "http://sygnetinfosol.com/webservice.asmx";
// 可以从wsdl文件中获取这些值^
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
SoapObject request=new SoapObject(NAMESPACE, METHOD_NAME);
request.addProperty("bSelected", true);
SoapSerializationEnvelope sse=new SoapSerializationEnvelope(SoapEnvelope.VER11);
sse.setOutputSoapObject(request);
sse.dotNet=true;
HttpTransportSE htse=new HttpTransportSE(URL);
try {
htse.call(SOAP_ACTION, sse);
} catch (IOException e) {
e.printStackTrace();
} catch (XmlPullParserException e) {
e.printStackTrace();
}
SoapObject res=(SoapObject) sse.bodyIn;
final ArrayList> valuesList = new ArrayList>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); // 获取XML
Document doc = parser.getDomElement(xml); // 获取DOM元素
NodeList nl = doc.getElementsByTagName(FORMMODEL);
// 循环遍历所有的item节点 -
for (int i = 0; i < ((SoapObject) nl).getPropertyCount(); i++) {
SoapObject namesObject = (SoapObject) res.getProperty(i);
for(int j=0;j
map = new HashMap();
Element e = (Element) nl.item(i);
// 将每个子节点添加到HashMap的key => value中
map.put(TEXT1, parser.getValue(e, sText1));
map.put(TEXT2, parser.getValue(e, sText2));
map.put(TEXT3, parser.getValue(e, sText3));
System.out.println("MY SOAP RESPONE IS"+ res.getProperty(0).toString());
// 将HashList添加到ArrayList中
valuesList.add(map);
}
}
// 将menuItems添加到ListView中
ListAdapter adapter = new SimpleAdapter(this, valuesList,R.layout.list_item,
new String[] { TEXT1, TEXT2, TEXT3 }, new int[] {
R.id.lat, R.id.long1, R.id.address });
setListAdapter(adapter);
ListView lv = getListView();
System.out.println("MY SOAP RESPONE IS"+ res.getProperty(0).toString());
// 在选择单个ListItem时启动新屏幕
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView parent, View view,int position, long id) {
HashMap map = new HashMap();
map = valuesList.get(position);
// 启动新的意图
Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);
in.putExtra(TEXT1, map.get(MainActivity.TEXT1));
in.putExtra(TEXT2, map.get(MainActivity.TEXT2));
in.putExtra(TEXT3, map.get(MainActivity.TEXT3));
startActivity(in);
}
});
}
}
LogCat
03-15 09:26:45.923: E/AndroidRuntime(3371): FATAL EXCEPTION: main
03-15 09:26:45.923: E/AndroidRuntime(3371): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.syg.abc/com.syg.abc.MainActivity}: android.os.NetworkOnMainThreadException
...
mainActivity.java
protected void onPostExecute(Void params) {
ListAdapter adapter = new SimpleAdapter(this, valuesList,R.layout.list_item,
new String[] { TEXT1, TEXT2, TEXT3 }, new int[] {
R.id.lat, R.id.long1, R.id.address });
setListAdapter(adapter);
ListView lv = getListView();
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView parent, View view,int position, long id) {
HashMap map = new HashMap();
map = valuesList.get(position);
// 启动新的意图
Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);
in.putExtra(TEXT1, map.get(MainActivity.TEXT1));
in.putExtra(TEXT2, map.get(MainActivity.TEXT2));
in.putExtra(TEXT3, map.get(MainActivity.TEXT3));
startActivity(in);
}
});
}
问题的出现原因是在主线程上进行网络请求。当应用程序在主线程上执行网络操作时，会抛出NetworkOnMainThreadException异常。这只会针对目标为Honeycomb SDK或更高版本的应用程序抛出。早期版本的SDK允许在主事件循环线程上进行网络操作，但这是不推荐的。
解决方法是使用AsyncTask来进行SOAP请求。在活动中，将SOAP请求放在AsyncTask的doInBackground方法中执行，并在onPostExecute方法中更新UI。
以下是修改后的代码：
public class MainActivity extends ListActivity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
new SoapRequestTask().execute();
}
private class SoapRequestTask extends AsyncTask {
//在UI线程上运行。显示进度对话框
protected void onPreExecute() {
//显示进度对话框
}
//在后台线程上运行。不要在此处更新UI
protected Void doInBackground(Void... params) {
//在此处进行SOAP请求
SoapObject request=new SoapObject(NAMESPACE, METHOD_NAME);
request.addProperty("bSelected", true);
SoapSerializationEnvelope sse=new SoapSerializationEnvelope(SoapEnvelope.VER11);
sse.setOutputSoapObject(request);
sse.dotNet=true;
HttpTransportSE htse=new HttpTransportSE(URL);
try {
htse.call(SOAP_ACTION, sse);
} catch (IOException e) {
e.printStackTrace();
} catch (XmlPullParserException e) {
e.printStackTrace();
}
SoapObject res=(SoapObject) sse.bodyIn;
final ArrayList> valuesList = new ArrayList>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); // 获取XML
Document doc = parser.getDomElement(xml); // 获取DOM元素
NodeList nl = doc.getElementsByTagName(FORMMODEL);
//循环遍历所有item节点
for (int i = 0; i < ((SoapObject) nl).getPropertyCount(); i++) {
SoapObject namesObject = (SoapObject) res.getProperty(i);
for(int j=0; j map = new HashMap();
Element e = (Element) nl.item(i);
// 将每个子节点添加到HashMap中，键=>值
map.put(TEXT1, parser.getValue(e, sText1));
map.put(TEXT2, parser.getValue(e, sText2));
map.put(TEXT3, parser.getValue(e, sText3));
System.out.println("MY SOAP RESPONE IS"+ res.getProperty(0).toString());
// 将HashList添加到ArrayList中
valuesList.add(map);
}
}
return null;
}
//在UI线程上运行。在此处更新UI，显示数据在ListView中
protected void onPostExecute(Void params) {
//关闭进度对话框并更新UI
ListAdapter adapter = new SimpleAdapter(MainActivity.this, valuesList, R.layout.list_item,
new String[] { TEXT1, TEXT2, TEXT3 }, new int[] { R.id.lat, R.id.long1, R.id.address });
}
}
}
另外，还可以使用RoboSpice作为替代方法。详情请查看链接：https://github.com/octo-online/robospice
希望对你有所帮助！
