我是android的新手，实际上这是我的第一款应用。该应用程序未完成，我想测试用户界面，它在AVD上运行正常，但是当我将.apk文件从bin文件夹复制到我的手机时，它安装得很好，但不会工作最终会出现强制关闭错误。我不知道问题是什么，我在其他帖子中看到有关解析edittext中的内容的问题，我拿出了布局并再次运行它仍然无法正常工作。再次，我是新手，请帮助我。
Mainactivity.java
package com.example.studentapp;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import android.content.res.Configuration;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ExpandableListView;
import android.widget.TextView;
import android.widget.ExpandableListView.OnChildClickListener;
import android.widget.ExpandableListView.OnGroupClickListener;
import android.widget.ExpandableListView.OnGroupCollapseListener;
import android.widget.ExpandableListView.OnGroupExpandListener;
import com.example.studentapp.ExpandableListAdapter;
import android.widget.Toast;
public class MainActivity extends ActionBarActivity {
DrawerLayout mDrawerLayout;
ExpandableListView mDrawerList;
ExpandableListAdapter listAdapter;
List<String> listDataHeader;
HashMap<String, List<String>> listDataChild;
private ActionBarDrawerToggle actionBarDrawerToggle;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getfragment(125);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ExpandableListView) findViewById(R.id.left_drawer);
// preparing list data
prepareListData();
listAdapter = new ExpandableListAdapter(this, listDataHeader, listDataChild);
// setting list adapter
mDrawerList.setAdapter(listAdapter);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
actionBarDrawerToggle = new ActionBarDrawerToggle(
this, /* host Activity */
mDrawerLayout, /* DrawerLayout object */
R.drawable.ic_drawer, /* nav drawer icon to replace 'Up' caret */
R.string.drawer_open, /* "open drawer" description */
R.string.drawer_close /* "close drawer" description */
);
// 2.2 Set actionBarDrawerToggle as the DrawerListener
mDrawerLayout.setDrawerListener(actionBarDrawerToggle);
// 2.3 enable and show "up" arrow
getActionBar().setDisplayHomeAsUpEnabled(true);
// Listview Group click listener
mDrawerList.setOnGroupClickListener(new OnGroupClickListener() {
@Override
public boolean onGroupClick(ExpandableListView parent, View v,
int groupPosition, long id) {
Toast.makeText(getApplicationContext(),
"Group Clicked " + (groupPosition),
Toast.LENGTH_SHORT).show();
//return true for non collapsable items, and false for collapsable items.
if(groupPosition==1 || groupPosition==2)
{ // getfragment(groupPosition);
getActionBar().setTitle(listDataHeader.get(groupPosition));
return true;}
else
return false;
}
});
// Listview Group expanded listener
mDrawerList.setOnGroupExpandListener(new OnGroupExpandListener() {
@Override
public void onGroupExpand(int groupPosition) {
Toast.makeText(getApplicationContext(),
listDataHeader.get(groupPosition) + " Expanded",
Toast.LENGTH_SHORT).show();
}
});
// Listview Group collasped listener
mDrawerList.setOnGroupCollapseListener(new OnGroupCollapseListener() {
@Override
public void onGroupCollapse(int groupPosition) {
Toast.makeText(getApplicationContext(),
listDataHeader.get(groupPosition) + " Collapsed",
Toast.LENGTH_SHORT).show();
}
});
// Listview on child click listener
mDrawerList.setOnChildClickListener(new OnChildClickListener() {
public boolean onChildClick(ExpandableListView parent, View v,
int groupPosition, int childPosition, long id) {
// TODO Auto-generated method stub
Toast.makeText(
getApplicationContext(),
listDataHeader.get(groupPosition)
+ " : "
+ listDataChild.get(
listDataHeader.get(groupPosition)).get(
childPosition), Toast.LENGTH_SHORT)
.show();
getActionBar().setTitle(listDataChild.get(
listDataHeader.get(groupPosition)).get(
childPosition));
return false;
}
});
}
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
actionBarDrawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
actionBarDrawerToggle.onConfigurationChanged(newConfig);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// call ActionBarDrawerToggle.onOptionsItemSelected(), if it returns true
// then it has handled the app icon touch event
if (actionBarDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
private void prepareListData() {
listDataHeader = new ArrayList<String>();
listDataChild = new HashMap<String, List<String>>();
// Adding header data
listDataHeader.add("Center Details");
// Adding child data
List<String> CentDet = new ArrayList<String>();
CentDet.add("Study Center");
CentDet.add("Information Center");
CentDet.add("Overseas Center");
listDataHeader.add("Login");
listDataHeader.add("PCP Schedule");
listDataHeader.add("Course");
List<String> courseS = new ArrayList<String>();
courseS.add("Study Materials");
courseS.add("Syllabus");
listDataHeader.add("Exam");
List<String> Exams = new ArrayList<String>();
Exams.add("Hall Ticket");
Exams.add("Exam Venue");
Exams.add("Exam Schedule");
Exams.add("Practical Schedule");
Exams.add("Model Question Papers");
listDataHeader.add("Results");
List<String> Resultss= new ArrayList<String>();
Resultss.add("Regular Stream");
Resultss.add("Overseas");
listDataChild.put(listDataHeader.get(0), CentDet); // Header, Child data
listDataChild.put(listDataHeader.get(1), null);
listDataChild.put(listDataHeader.get(2), null);
listDataChild.put(listDataHeader.get(3), courseS);
listDataChild.put(listDataHeader.get(4), Exams);
listDataChild.put(listDataHeader.get(5), Resultss);
}
void getfragment(int x)
{
android.app.FragmentManager fragmentManager1 = getFragmentManager();
android.app.FragmentTransaction fragmentTransaction1 = fragmentManager1.beginTransaction();
fragmenttwo lm_fragment = new fragmenttwo();
switch (x)
{
// case 1:
// lm_fragment.fragmenttwoo(1);
//
//break;
case 2:
lm_fragment.fragmenttwoo(2);
break;
case 3:
lm_fragment.fragmenttwoo(3);
break;
case 125:
lm_fragment.fragmenttwoo(125);
break;
}
fragmentTransaction1.replace(R.id.content_frame, lm_fragment);
fragmentTransaction1.commit();
}
}
fragmenttwo.java
package com.example.studentapp;
import android.annotation.TargetApi;
import android.app.Fragment;
import android.os.Build;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public class fragmenttwo extends Fragment{
public int x;
public fragmenttwo(){}
public void fragmenttwoo(int n)
{
switch(n)
{
case 125:
x = com.example.studentapp.R.layout.sample;
break;
// case 1:
// x = com.example.studentapp.R.layout.login;
// break;
case 2:
x = com.example.studentapp.R.layout.pcpschedule;
break;
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
/** * Inflate the layout for this fragment */
// switch(x)
// {
// int idno= r.layout.layoutu want for each case
//put the idno on below as parameter instead of r.layout.sample
//}
return inflater.inflate( x, container, false);
}
}
ExpandableListAdpater.java
package com.example.studentapp;
import java.util.HashMap;
import java.util.List;
import android.content.Context;
import android.graphics.Typeface;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.TextView;
public class ExpandableListAdapter extends BaseExpandableListAdapter {
private Context _context;
private List<String> _listDataHeader; // header titles
// child data in format of header title, child title
private HashMap<String, List<String>> _listDataChild;
public ExpandableListAdapter(Context context, List<String> listDataHeader,
HashMap<String, List<String>> listChildData) {
this._context = context;
this._listDataHeader = listDataHeader;
this._listDataChild = listChildData;
}
@Override
public Object getChild(int groupPosition, int childPosititon) {
return this._listDataChild.get(this._listDataHeader.get(groupPosition))
.get(childPosititon);
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
public View getChildView(int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
final String childText = (String) getChild(groupPosition, childPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_item, null);
}
TextView txtListChild = (TextView) convertView
.findViewById(R.id.lblListItem);
txtListChild.setText(childText);
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
return this._listDataChild.get(this._listDataHeader.get(groupPosition))
.size();
}
@Override
public Object getGroup(int groupPosition) {
return this._listDataHeader.get(groupPosition);
}
@Override
public int getGroupCount() {
return this._listDataHeader.size();
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
String headerTitle = (String) getGroup(groupPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_group, null);
}
TextView lblListHeader = (TextView) convertView
.findViewById(R.id.lblListHeader);
lblListHeader.setTypeface(null, Typeface.BOLD);
lblListHeader.setText(headerTitle);
return convertView;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
任何帮助将不胜感激。
如我所知，我使用了adb，这里是logcat日志，它说虚拟方法getfragment无法解析......
06-03 21:18:03.789: W/dalvikvm(11126): VFY: unable to resolve virtual method 8281: Lcom/example/studentapp/MainActivity;.getFragmentManager ()Landroid/app/FragmentManager;
06-03 21:18:03.789: D/dalvikvm(11126): VFY: replacing opcode 0x6e at 0x0000
06-03 21:18:03.789: D/dalvikvm(11126): VFY: dead code 0x0003-0029 in Lcom/example/studentapp/MainActivity;.getfragment (I)V
06-03 21:18:03.812: W/dalvikvm(11126): VFY: unable to resolve virtual method 8279: Lcom/example/studentapp/MainActivity;.getActionBar ()Landroid/app/ActionBar;
06-03 21:18:03.812: D/dalvikvm(11126): VFY: replacing opcode 0x6e at 0x005b
06-03 21:18:03.812: D/dalvikvm(11126): VFY: dead code 0x005e-008b in Lcom/example/studentapp/MainActivity;.onCreate (Landroid/os/Bundle;)V
06-03 21:18:03.820: I/ApplicationPackageManager(11126): cscCountry is not German : INS
06-03 21:18:03.976: D/AndroidRuntime(11126): Shutting down VM
06-03 21:18:03.976: W/dalvikvm(11126): threadid=1: thread exiting with uncaught exception (group=0x40018578)
06-03 21:18:03.976: E/AndroidRuntime(11126): FATAL EXCEPTION: main
06-03 21:18:03.976: E/AndroidRuntime(11126): java.lang.NoSuchMethodError: com.example.studentapp.MainActivity.getFragmentManager
06-03 21:18:03.976: E/AndroidRuntime(11126): at com.example.studentapp.MainActivity.getfragment(MainActivity.java:223)
06-03 21:18:03.976: E/AndroidRuntime(11126): at com.example.studentapp.MainActivity.onCreate(MainActivity.java:42)
06-03 21:18:03.976: E/AndroidRuntime(11126): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
06-03 21:18:03.976: E/AndroidRuntime(11126): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
06-03 21:18:03.976: E/AndroidRuntime(11126): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
06-03 21:18:03.976: E/AndroidRuntime(11126): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
06-03 21:18:03.976: E/AndroidRuntime(11126): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
06-03 21:18:03.976: E/AndroidRuntime(11126): at android.os.Handler.dispatchMessage(Handler.java:99)
06-03 21:18:03.976: E/AndroidRuntime(11126): at android.os.Looper.loop(Looper.java:130)
06-03 21:18:03.976: E/AndroidRuntime(11126): at android.app.ActivityThread.main(ActivityThread.java:3687)
06-03 21:18:03.976: E/AndroidRuntime(11126): at java.lang.reflect.Method.invokeNative(Native Method)
06-03 21:18:03.976: E/AndroidRuntime(11126): at java.lang.reflect.Method.invoke(Method.java:507)
06-03 21:18:03.976: E/AndroidRuntime(11126): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
06-03 21:18:03.976: E/AndroidRuntime(11126): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
06-03 21:18:03.976: E/AndroidRuntime(11126): at dalvik.system.NativeStart.main(Native Method)
答案 0 :(得分：0)
阅读第223行的logcat：noSuchMethodError。双击logcat中的那一行，最后将进入MainActivity的第223行。告诉我们代码。
CscCountry不是德国人？
或者您正在使用不知道getActionBar（）的设备上运行。