我的应用logcat的崩溃给了我这一点的说:的Android应用程序保持在XML解析
我试图解析XML从HTTPGET请求接收文件(字符串结果)结果是在字符串中的XML格式。只是不能让它把字符串值进行测试对登录。
02-20 19:39:48.326:E/AndroidRuntime(774):致命异常:主02-20 19:39:48.326:E/AndroidRuntime(774):java.lang.ClassCastException: org.apache.harmony.xml.dom.ElementImpl can not be cast to android.sax.Element 02-20 19:39:48.326:E/AndroidRuntime(774):at com.testingapp.MainActivity $ startLogin.onPostExecute(MainActivity .java:112) 02-20 19:39:48.326:E/AndroidRuntime(774):at com.testingapp.MainActivity $ startLogin.onPostExecute(MainActivity.java:1) 02-20 19:39:48.326: E/AndroidRuntime(774):at android.os.AsyncTask.finish(AsyncTask.java:631)02-20 19:39:48 .326: E/AndroidRuntime(774):at android.os.AsyncTask.access $ 600(AsyncTask.java:177)02-20 19:39:48.326:E/AndroidRuntime(774):at android.os .AsyncTask $ InternalHandler.handleMessage(AsyncTask.java:644) 02-20 19:39:48.326:E/AndroidRuntime(774):at android.os.Handler.dispatchMessage(Handler.java:99)02-20 19:39:48.326:E/AndroidRuntime(774):在 android.os.Looper.loop(Looper.java:137)02-20 19:39:48.326: E/AndroidRuntime(774):at android。 app.ActivityThread.main(ActivityThread.java:5039)02-20 19:39:48.326:E/AndroidRuntime(774):at java.lang.reflect.Method.invokeNative(Native Method)02-20 19:39:48.326:E/AndroidRuntime(774):at java.lang.reflect.Method.invoke(Method.java:511)02-20 19:39:48.326: E/AndroidRuntime(774):at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:793) 02-20 19:39:48.326:E/AndroidRuntime(774):at com.android.internal.os.ZygoteInit。主(ZygoteInit.java:560)02-20 19:39:48.326:E/AndroidRuntime(774):在 dalvik.system.NativeStart.main(本机方法)
我能够把重点放在错误到我的onPostExecute AsyncTask:
@Override
protected void onPostExecute(String result) {
int z = 0;
String xml = result;
String KEY_ITEM = "Response";
String KEY_SUCCESS = "Success";
String KEY_FAIL = "Fail";
String KEY_UID = "UID";
Document doc = getDomElement(xml);
if(xml != null)
{
NodeList nl = doc.getElementsByTagName(KEY_ITEM);
for (int i = 0; i < nl.getLength(); i++)
{
Element e = (Element) nl.item(i);
String successString = getValue(e,KEY_SUCCESS);
String UIDString = getValue(e,KEY_UID);
String failString = getValue(e,KEY_FAIL);
if(failString.equals("Fail")){
int duration = Toast.LENGTH_LONG;
Toast toast = Toast.makeText(MainActivity.this, "Please check username and password.", duration);
toast.setGravity(Gravity.TOP|Gravity.RIGHT, 0, 0);
toast.show();
}
else{
if(successString.equals("Success")){
Intent intent = new Intent (MainActivity.this, HomeActivity.class);
startActivity(intent);
}
}
}
}
else
{
Toast toast = Toast.makeText(MainActivity.this, "No Connection to Retrieve Data.", Toast.LENGTH_LONG);
toast.show();
}
}
我不明白我在做什么错?
看起来是一个ClassCastException ...你能发布你的XML数据吗?上述 – 2013-02-20 20:20:15
是从服务的输出。 – Keeano 2013-02-20 20:36:14