我正在创建一个带有 slider 的应用程序，它工作正常，然后我添加了另一个 View 并为新添加的 View 实现了 OnClickListener() ，之后当我收到以下错误时打开我的应用程序
Process: com.spintum.preexam, PID: 31905
java.lang.NoClassDefFoundError: com.spintum.preexam.CustomList$DrawerItemHolder
at com.spintum.preexam.CustomList.getView(CustomList.java:38)
at android.widget.AbsListView.obtainView(AbsListView.java:2338)
at android.widget.ListView.makeAndAddView(ListView.java:1812)
at android.widget.ListView.fillDown(ListView.java:698)
at android.widget.ListView.fillFromTop(ListView.java:759)
at android.widget.ListView.layoutChildren(ListView.java:1645)
at android.widget.AbsListView.onLayout(AbsListView.java:2149)
at android.view.View.layout(View.java:15125)
at android.view.ViewGroup.layout(ViewGroup.java:4862)
at android.support.v4.widget.DrawerLayout.onLayout(DrawerLayout.java:931)
at android.view.View.layout(View.java:15125)
at android.view.ViewGroup.layout(ViewGroup.java:4862)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:515)
at android.widget.FrameLayout.onLayout(FrameLayout.java:450)
at android.view.View.layout(View.java:15125)
at android.view.ViewGroup.layout(ViewGroup.java:4862)
at com.android.internal.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:374)
at android.view.View.layout(View.java:15125)
at android.view.ViewGroup.layout(ViewGroup.java:4862)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:515)
at android.widget.FrameLayout.onLayout(FrameLayout.java:450)
at android.view.View.layout(View.java:15125)
at android.view.ViewGroup.layout(ViewGroup.java:4862)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2317)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2023)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1189)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6223)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:788)
at android.view.Choreographer.doCallbacks(Choreographer.java:591)
at android.view.Choreographer.doFrame(Choreographer.java:560)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:774)
at android.os.Handler.handleCallback(Handler.java:808)
at android.os.Handler.dispatchMessage(Handler.java:103)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:824)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:640)
at dalvik.system.NativeStart.main(Native Method)
logcat显示NoClassDefFound错误的类如下
public class CustomList extends ArrayAdapter<DrawerItem> {
Context context;
List<DrawerItem> drawerItemList;
int layoutResID;
public CustomList(Context context, int layoutResourceID,
List<DrawerItem> listItems) {
super(context, layoutResourceID, listItems);
this.context = context;
this.drawerItemList = listItems;
this.layoutResID = layoutResourceID;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
DrawerItemHolder drawerHolder;
View view = convertView;
if (view == null) {
LayoutInflater inflater = ((Activity) context).getLayoutInflater();
drawerHolder = new DrawerItemHolder();
view = inflater.inflate(layoutResID, parent, false);
drawerHolder.ItemName = (TextView) view.findViewById(R.id.drawer_item_text);
drawerHolder.icon = (ImageView) view.findViewById(R.id.drawer_item_icon);
view.setTag(drawerHolder);
} else {
drawerHolder = (DrawerItemHolder) view.getTag();
}
DrawerItem dItem = (DrawerItem) this.drawerItemList.get(position);
drawerHolder.icon.setImageDrawable(view.getResources().getDrawable(
dItem.getImgResID()));
drawerHolder.ItemName.setText(dItem.getItemName());
return view;
}
private static class DrawerItemHolder {
TextView ItemName;
ImageView icon;
}
}
错误显示在 drawerHolder = new DrawerItemHolder(); 行中。
我没有对此类进行任何更改，因此我认为问题可能是由我在充当 fragment 容器的原始 Activity 中添加的额外 View 引起的。该 Activity 的代码如下
public class Home extends Activity {
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
private CharSequence mDrawerTitle;
private CharSequence mTitle;
private String[] mPlanetTitles;
private static int pos;
List<DrawerItem> dataList = new ArrayList<DrawerItem>();
View statistics,test,syllabus,share;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
this.getActionBar().setBackgroundDrawable(
getResources().getDrawable(R.color.background));
this.overridePendingTransition(R.layout.fade_in, R.layout.fade_out);
mTitle = mDrawerTitle = getTitle();
mPlanetTitles = getResources().getStringArray(R.array.planets_array);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.left_drawer);
statistics=findViewById(R.id.statistics_container);
test=findViewById(R.id.test_container);
syllabus=findViewById(R.id.syllabus_container);
share=findViewById(R.id.share_container);
statistics.setOnClickListener(mBottomDrawerListener);
syllabus.setOnClickListener(mBottomDrawerListener);
test.setOnClickListener(mBottomDrawerListener);
share.setOnClickListener(mBottomDrawerListener);
TextView image=(TextView)findViewById(R.id.statistics_image);
TextView text=(TextView)findViewById(R.id.statistics);
image.setTextColor(Color.parseColor("#03a9f4"));
text.setTextColor(Color.parseColor("#03a9f4"));
// set a custom shadow that overlays the main content when the drawer opens
mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow,GravityCompat.START);
int width = getResources().getDisplayMetrics().widthPixels;
DrawerLayout.LayoutParams params = (android.support.v4.widget.DrawerLayout.LayoutParams) mDrawerList.getLayoutParams();
//params.width = (width * 75) / 100;
mDrawerList.setLayoutParams(params);
// set up the drawer's list view with items and click listener
/*
* mDrawerList.setAdapter(new ArrayAdapter<String>(this,
* R.layout.list_item, mPlanetTitles));
*/
dataList.add(new DrawerItem("Home", R.drawable.home));
dataList.add(new DrawerItem("Intelligence Questionnaire",
R.drawable.bulb));
dataList.add(new DrawerItem("Change Country", R.drawable.location));
dataList.add(new DrawerItem("LeaderBoard", R.drawable.cup));
dataList.add(new DrawerItem("How to play", R.drawable.help));
dataList.add(new DrawerItem("Exam Tips", R.drawable.tip));
mDrawerList.setAdapter(new CustomList(Home.this, R.layout.list_item,dataList));
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
// enable ActionBar app icon to behave as action to toggle nav drawer
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
// ActionBarDrawerToggle ties together the the proper interactions
// between the sliding drawer and the action bar app icon
mDrawerToggle = new ActionBarDrawerToggle(this, /* host Activity */ mDrawerLayout, /* DrawerLayout object */R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */R.string.drawer_open, /* "open drawer" description for accessibility */
R.string.drawer_close /* "close drawer" description for accessibility */) {
public void onDrawerClosed(View view) {
getActionBar().setTitle(mTitle);
invalidateOptionsMenu(); // creates call to
// onPrepareOptionsMenu()
}
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(mDrawerTitle);
invalidateOptionsMenu(); // creates call to
// onPrepareOptionsMenu()
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
if (savedInstanceState == null) {
selectItem(0);
}
Typeface iconfont=FontManager.getTypeface(getApplicationContext(),FontManager.FONTAWESOME);
FontManager.markAsIconContainer(findViewById(R.id.btm_nav_bar),iconfont);
}
public View.OnClickListener mBottomDrawerListener=new View.OnClickListener() {
@Override
public void onClick(View v) {
FragmentManager fragmentManager=getFragmentManager();
setBlackText(v);
TextView image,text;
switch (v.getId()){
case R.id.statistics_container:
fragmentManager.beginTransaction().replace(R.id.content_frame,new HomePage()).commit();
image=(TextView)v.findViewById(R.id.statistics_image);
text=(TextView)v.findViewById(R.id.statistics);
image.setTextColor(Color.parseColor("#03a9f4"));
text.setTextColor(Color.parseColor("#03a9f4"));
break;
case R.id.syllabus_container:
image=(TextView)v.findViewById(R.id.syllabus_image);
text=(TextView)v.findViewById(R.id.syllabus_btm);
image.setTextColor(Color.parseColor("#03a9f4"));
text.setTextColor(Color.parseColor("#03a9f4"));
break;
case R.id.test_container:
image=(TextView)v.findViewById(R.id.test_image);
text=(TextView)v.findViewById(R.id.Tests);
image.setTextColor(Color.parseColor("#03a9f4"));
text.setTextColor(Color.parseColor("#03a9f4"));
break;
case R.id.share_container:
image=(TextView)v.findViewById(R.id.share_image);
text=(TextView)v.findViewById(R.id.share_btm);
image.setTextColor(Color.parseColor("#03a9f4"));
text.setTextColor(Color.parseColor("#03a9f4"));
break;
}
}
};
public void setBlackText(View v){
TextView img[]=new TextView[4];
TextView t1,t2,t3,t4;
img[0]=(TextView)findViewById(R.id.statistics_image);
t4=(TextView)findViewById(R.id.statistics);
img[1]=(TextView)findViewById(R.id.test_image);
t1=(TextView)findViewById(R.id.Tests);
img[2]=(TextView)findViewById(R.id.syllabus_image);
t2=(TextView)findViewById(R.id.syllabus_btm);
img[3]=(TextView)findViewById(R.id.share_image);
t3=(TextView)findViewById(R.id.share_btm);
for(TextView singleTextView:img){
singleTextView.setTextColor(Color.parseColor("#000000"));
}
t1.setTextColor(Color.parseColor("#000000"));
t2.setTextColor(Color.parseColor("#000000"));
t3.setTextColor(Color.parseColor("#000000"));
t4.setTextColor(Color.parseColor("#000000"));
}
/*
* @Override public boolean onCreateOptionsMenu(Menu menu) { MenuInflater
* inflater = getMenuInflater(); inflater.inflate(R.menu.activity_main,
* menu); return super.onCreateOptionsMenu(menu); }
*
* Called whenever we call invalidateOptionsMenu()
*
* @Override public boolean onPrepareOptionsMenu(Menu menu) { // If the nav
* drawer is open, hide action items related to the content view boolean
* drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
* //menu.findItem(R.id.action_websearch).setVisible(!drawerOpen); return
* super.onPrepareOptionsMenu(menu); }
*/
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// The action bar home/up action should open or close the drawer.
// ActionBarDrawerToggle will take care of this.
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
// Handle action buttons
switch (item.getItemId()) {
case 1:
// create intent to perform web search for this planet
Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
intent.putExtra(SearchManager.QUERY, getActionBar().getTitle());
// catch event that there's no activity to handle intent
if (intent.resolveActivity(getPackageManager()) != null) {
startActivity(intent);
} else {
Toast.makeText(this, R.string.app_not_available,
Toast.LENGTH_LONG).show();
}
return true;
default:
return super.onOptionsItemSelected(item);
}
}
/* The click listner for ListView in the navigation drawer */
private class DrawerItemClickListener implements
ListView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
selectItem(position);
}
}
private void selectItem(int position) {
// update the main content by replacing fragments
/*
* Fragment fragment = new HomePage(); Bundle args = new Bundle();
* args.putInt(PlanetFragment.ARG_PLANET_NUMBER, position);
* fragment.setArguments(args);
*/
pos = position;
FragmentManager fragmentManager = getFragmentManager();
switch (pos) {
case 0:
fragmentManager.beginTransaction().replace(R.id.content_frame, new Fragment_Statistics()).commit();
break;
case 1:
break;
case 2:
fragmentManager.beginTransaction().replace(R.id.content_frame, new Country()).commit();
case 3:break;
case 4:break;
case 5:break;
}
// update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
setTitle(mPlanetTitles[position]);
mDrawerLayout.closeDrawer(mDrawerList);
}
@Override
public void setTitle(CharSequence title) {
mTitle = title;
getActionBar().setTitle(mTitle);
}
/**
* When using the ActionBarDrawerToggle, you must call it during
* onPostCreate() and onConfigurationChanged()...
*/
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
mDrawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Pass any configuration change to the drawer toggls
mDrawerToggle.onConfigurationChanged(newConfig);
}
}
Home Activity 中使用的 DrawerItem 类如下所示
public class DrawerItem {
String ItemName;
int imgResID;
public DrawerItem(String itemName, int imgResID) {
super();
ItemName = itemName;
this.imgResID = imgResID;
}
public String getItemName() {
return ItemName;
}
public void setItemName(String itemName) {
ItemName = itemName;
}
public int getImgResID() {
return imgResID;
}
public void setImgResID(int imgResID) {
this.imgResID = imgResID;
}}
有人能看出我哪里出了问题吗？提前致谢..
最佳答案
DrawerItemHolder 类应该是公共(public)的，或者至少不应该是私有(private)的。
关于java - Android Slider 中的 NoClassDefFoundError 错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38081777/