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我收到這些錯誤在我的logcat：在我的Android應用程序中導致這些錯誤的原因是什麼？
02-13 18:52:12.742: E/AndroidRuntime(428): FATAL EXCEPTION: main
02-13 18:52:12.742: E/AndroidRuntime(428): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.thesis.menubook/com.thesis.menubook.MenuMain}: android.view.InflateException: Binary XML file line #8: Error inflating class fragment
02-13 18:52:12.742: E/AndroidRuntime(428): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1748)
02-13 18:52:12.742: E/AndroidRuntime(428): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1764)
02-13 18:52:12.742: E/AndroidRuntime(428): at android.app.ActivityThread.access$1500(ActivityThread.java:122)
02-13 18:52:12.742: E/AndroidRuntime(428): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1002)
02-13 18:52:12.742: E/AndroidRuntime(428): at android.os.Handler.dispatchMessage(Handler.java:99)
02-13 18:52:12.742: E/AndroidRuntime(428): at android.os.Looper.loop(Looper.java:132)
02-13 18:52:12.742: E/AndroidRuntime(428): at android.app.ActivityThread.main(ActivityThread.java:4025)
02-13 18:52:12.742: E/AndroidRuntime(428): at java.lang.reflect.Method.invokeNative(Native Method)
02-13 18:52:12.742: E/AndroidRuntime(428): at java.lang.reflect.Method.invoke(Method.java:491)
02-13 18:52:12.742: E/AndroidRuntime(428): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
02-13 18:52:12.742: E/AndroidRuntime(428): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
02-13 18:52:12.742: E/AndroidRuntime(428): at dalvik.system.NativeStart.main(Native Method)
02-13 18:52:12.742: E/AndroidRuntime(428): Caused by: android.view.InflateException: Binary XML file line #8: Error inflating class fragment
02-13 18:52:12.742: E/AndroidRuntime(428): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:688)
02-13 18:52:12.742: E/AndroidRuntime(428): at android.view.LayoutInflater.rInflate(LayoutInflater.java:724)
02-13 18:52:12.742: E/AndroidRuntime(428): at android.view.LayoutInflater.inflate(LayoutInflater.java:479)
02-13 18:52:12.742: E/AndroidRuntime(428): at android.view.LayoutInflater.inflate(LayoutInflater.java:391)
02-13 18:52:12.742: E/AndroidRuntime(428): at android.view.LayoutInflater.inflate(LayoutInflater.java:347)
02-13 18:52:12.742: E/AndroidRuntime(428): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:223)
02-13 18:52:12.742: E/AndroidRuntime(428): at android.app.Activity.setContentView(Activity.java:1780)
02-13 18:52:12.742: E/AndroidRuntime(428): at com.thesis.menubook.MenuMain.onCreate(MenuMain.java:16)
02-13 18:52:12.742: E/AndroidRuntime(428): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048)
02-13 18:52:12.742: E/AndroidRuntime(428): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1712)
02-13 18:52:12.742: E/AndroidRuntime(428): ... 11 more
02-13 18:52:12.742: E/AndroidRuntime(428): Caused by: android.os.NetworkOnMainThreadException
02-13 18:52:12.742: E/AndroidRuntime(428): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1077)
02-13 18:52:12.742: E/AndroidRuntime(428): at dalvik.system.BlockGuard$WrappedNetworkSystem.connect(BlockGuard.java:368)
02-13 18:52:12.742: E/AndroidRuntime(428): at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:208)
02-13 18:52:12.742: E/AndroidRuntime(428): at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:431)
02-13 18:52:12.742: E/AndroidRuntime(428): at java.net.Socket.connect(Socket.java:901)
02-13 18:52:12.742: E/AndroidRuntime(428): at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:119)
02-13 18:52:12.742: E/AndroidRuntime(428): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:143)
02-13 18:52:12.742: E/AndroidRuntime(428): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
02-13 18:52:12.742: E/AndroidRuntime(428): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
02-13 18:52:12.742: E/AndroidRuntime(428): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
02-13 18:52:12.742: E/AndroidRuntime(428): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
02-13 18:52:12.742: E/AndroidRuntime(428): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
02-13 18:52:12.742: E/AndroidRuntime(428): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
02-13 18:52:12.742: E/AndroidRuntime(428): at com.thesis.menubook.JSONParser.makeHttpRequest(JSONParser.java:62)
02-13 18:52:12.742: E/AndroidRuntime(428): at com.thesis.menubook.MenuCategory.onCreate(MenuCategory.java:41)
02-13 18:52:12.742: E/AndroidRuntime(428): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:702)
02-13 18:52:12.742: E/AndroidRuntime(428): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:905)
02-13 18:52:12.742: E/AndroidRuntime(428): at android.app.FragmentManagerImpl.addFragment(FragmentManager.java:983)
02-13 18:52:12.742: E/AndroidRuntime(428): at android.app.Activity.onCreateView(Activity.java:4141)
02-13 18:52:12.742: E/AndroidRuntime(428): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:664)
02-13 18:52:12.742: E/AndroidRuntime(428): ... 20 more
02-13 18:52:13.241: D/dalvikvm(428): GC_CONCURRENT freed 335K, 6% free 7443K/7879K, paused 10ms+10ms
02-13 18:52:23.632: I/Process(428): Sending signal. PID: 428 SIG: 9
而且我猜測，這一行是導致我的應用程序強制關閉：
02-13 18:52:12.742: E/AndroidRuntime(428): Caused by: android.os.NetworkOnMainThreadException
02-13 18:52:12.742: E/AndroidRuntime(428): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1077)
任何想法是什麼原因造成的？這是我的java文件：
package com.thesis.menubook;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.apache.http.NameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.annotation.TargetApi;
import android.app.ListFragment;
import android.app.ProgressDialog;
import android.os.Build;
import android.os.Bundle;
import android.util.Log;
import android.widget.ArrayAdapter;
import android.widget.SimpleAdapter;
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public class MenuCategory extends ListFragment {
JSONParser jsonParser = new JSONParser();
ArrayList<HashMap<String, String>> categoryList;
private ProgressDialog pDialog;
@Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
// LOAD CATEGORY ONTO LIST
Bundle b = getActivity().getIntent().getExtras();
String table_ID = b.getString("Table");
String ipaddress = b.getString("IPAddress");
List<NameValuePair> params = new ArrayList<NameValuePair>();
Log.d("IP ADDRESS", ipaddress +" ");
//CODE FAILS HERE
JSONObject json = jsonParser.makeHttpRequest("http://"+ipaddress+"/MenuBook/selectCategories.php", "GET", params);
// Check your log cat for JSON reponse
Log.d("All Categories: ", json.toString() + " ");
try {
// Checking for SUCCESS TAG
int success = json.getInt("success");
if (success == 1) {
// products found
// Getting Array of Products
JSONArray category_list = json.getJSONArray("category_list");
// looping through All Products
for (int j = 0; j < category_list.length(); j++) {
JSONObject c = category_list.getJSONObject(j);
// Storing each json item in variable
String category = c.getString("category");
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put("category", category);
int num = 1;
Log.d("category #"+num+"", category);
num++;
// adding HashList to ArrayList
if(categoryList.contains(map) != true)
{
categoryList.add(map);
}
}
}
} catch (JSONException e) {
e.printStackTrace();
}
ArrayAdapter<ArrayList<HashMap<String, String>>> arrayAdapter = new ArrayAdapter<ArrayList<HashMap<String, String>>>(getActivity().
getApplicationContext(), R.layout.activity_menu_category);
arrayAdapter.add(categoryList);
setListAdapter(arrayAdapter);
}
}