NullPointerException en android.content.ContextWrapper

Cuando trato de obtener un color a través de getResources().getColor(R.color.yellow) en una actividad normal recibo esta excepción:

 07-12 11:58:38.019: E/AndroidRuntime(3233): FATAL EXCEPTION: main 07-12 11:58:38.019: E/AndroidRuntime(3233): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.moveinblue.planner/com.moveinblue.planner.controller.plan.PlanDayScreen}: java.lang.NullPointerException 07-12 11:58:38.019: E/AndroidRuntime(3233): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1993) 07-12 11:58:38.019: E/AndroidRuntime(3233): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2104) 07-12 11:58:38.019: E/AndroidRuntime(3233): at android.app.ActivityThread.access$600(ActivityThread.java:132) 07-12 11:58:38.019: E/AndroidRuntime(3233): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1157) 07-12 11:58:38.019: E/AndroidRuntime(3233): at android.os.Handler.dispatchMessage(Handler.java:99) 07-12 11:58:38.019: E/AndroidRuntime(3233): at android.os.Looper.loop(Looper.java:137) 07-12 11:58:38.019: E/AndroidRuntime(3233): at android.app.ActivityThread.main(ActivityThread.java:4575) 07-12 11:58:38.019: E/AndroidRuntime(3233): at java.lang.reflect.Method.invokeNative(Native Method) 07-12 11:58:38.019: E/AndroidRuntime(3233): at java.lang.reflect.Method.invoke(Method.java:511) 07-12 11:58:38.019: E/AndroidRuntime(3233): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789) 07-12 11:58:38.019: E/AndroidRuntime(3233): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556) 07-12 11:58:38.019: E/AndroidRuntime(3233): at dalvik.system.NativeStart.main(Native Method) 07-12 11:58:38.019: E/AndroidRuntime(3233): Caused by: java.lang.NullPointerException 07-12 11:58:38.019: E/AndroidRuntime(3233): at android.content.ContextWrapper.getResources(ContextWrapper.java:81) 07-12 11:58:38.019: E/AndroidRuntime(3233): at com.moveinblue.planner.controller.plan.PlanDayScreen$4.<init>(PlanDayScreen.java:408) 07-12 11:58:38.019: E/AndroidRuntime(3233): at com.moveinblue.planner.controller.plan.PlanDayScreen.<init>(PlanDayScreen.java:406) 07-12 11:58:38.019: E/AndroidRuntime(3233): at java.lang.Class.newInstanceImpl(Native Method) 07-12 11:58:38.019: E/AndroidRuntime(3233): at java.lang.Class.newInstance(Class.java:1319) 07-12 11:58:38.019: E/AndroidRuntime(3233): at android.app.Instrumentation.newActivity(Instrumentation.java:1023) 07-12 11:58:38.019: E/AndroidRuntime(3233): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1984) 07-12 11:58:38.019: E/AndroidRuntime(3233): ... 11 more 

¿Puede alguien darme una idea retrospectiva aquí? Estoy totalmente perdido.

• NullPointerException de getExtras ()
• API de Google Maps Android - NullPointerException - setBoundsInParent
• Box.COM integración con una aplicación android-OAuthActivity-Nullpointerexception?
• ¿Por qué mi contexto en mi Fragmento es nulo?
• Long.getLong () fallando, devolviendo null a cadena válida

Código en la actividad:

 package com.moveinblue.planner.controller.plan; import java.text.SimpleDateFormat; import java.util.BitSet; import java.util.Calendar; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.os.AsyncTask; import android.view.View; import android.view.View.OnClickListener; import android.widget.ArrayAdapter; import android.widget.AutoCompleteTextView; import android.widget.ImageButton; import android.widget.ImageView; import android.widget.ListView; import android.widget.Toast; import com.moveinblue.api.Login; import com.moveinblue.api.Planner; import com.moveinblue.api.UnauthorizedException; import com.moveinblue.api.io.InvalidURLException; import com.moveinblue.api.io.OfflineException; import com.moveinblue.api.model.ModelObject; import com.moveinblue.api.model.Plan; import com.moveinblue.api.model.time.Day; import com.moveinblue.api.model.time.ScheduledThingToDo; import com.moveinblue.api.model.time.ScheduledTime; import com.moveinblue.api.model.time.ScheduledTime.TimeOfDay; import com.moveinblue.planner.R; import com.moveinblue.planner.controller.GenericPlannerScreen; import com.moveinblue.planner.controller.thingtodo.ThingsToDoListScreen; import com.moveinblue.planner.controller.user.LoginScreen; import com.moveinblue.planner.ui.actionbar.ActionBar; import com.moveinblue.planner.ui.draganddroplist.DragListener; import com.moveinblue.planner.ui.draganddroplist.DragNDropListView; import com.moveinblue.planner.ui.draganddroplist.DropListener; import com.moveinblue.planner.ui.draganddroplist.RemoveListener; import com.moveinblue.planner.utils.CommonActionStorage; import com.moveinblue.planner.utils.CurrentItemsStorage; import com.moveinblue.planner.utils.adapter.DragNDropAdapter; import com.moveinblue.planner.utils.adapter.listeners.OnCheckListener; public class PlanDayScreen extends GenericPlannerScreen { DragNDropListView lista; AutoCompleteTextView actv; String[] dests; DragNDropAdapter adapter; private Boolean idDroppedOrDeleted = false; private BitSet checkedBoxes = new BitSet(); private boolean firstLoad = true; Day day; @SuppressWarnings("unused") private static final String LOG_TAG = PlanDayScreen.class .getCanonicalName(); @Override public void load() { setContentView(R.layout.plan_day_list); setUpList(); setUpBottomLayout(false); lista.requestFocus(); } @Override protected void loadActionBar() { Plan p = CurrentItemsStorage.currentPlan; Calendar c = CurrentItemsStorage.currentDay; ab = new ActionBar(this, ActionBar.TYPE_LIST); String date = new SimpleDateFormat("MMM dd, yyyy").format(c.getTime()); date = Character.toUpperCase(date.charAt(0)) + date.substring(1); date = "(" + date + ")"; String title; title = (p != null) ? p.name + " " + date : "Draft plan"; ab.setTitle(title); ab.setBackAction(R.drawable.back, new OnClickListener() { @Override public void onClick(View arg0) { Intent intent = new Intent(PlanDayScreen.this, PlanTabsScreen.class); intent.putExtra("tab", 2); startActivity(intent); overridePendingTransition(android.R.anim.slide_in_left, android.R.anim.fade_out); } }); CommonActionStorage.setUpActionBar(ab); } private void addNewTTD() { if (getIntent().getBooleanExtra("schedule", false) && firstLoad) { try { Calendar c = CurrentItemsStorage.currentDay; TimeOfDay tod = CurrentItemsStorage.currentTimeOfDaySelectedOption; Planner.schedule( CurrentItemsStorage.getCurrentThingToDo().ttdId, new ScheduledTime(c, tod)); } catch (Exception ex) { ex.getStackTrace(); } } firstLoad = false; } /** * Sets up a bottom bar button * * @param id * The bottom bar button id you want to set */ private void setUpBottomButton(int id) { ImageButton b = (ImageButton) findViewById(id); switch (id) { case R.id.buttonBottom1: if (!areThereCheckedBoxes()) { b.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // Add TTD to plan Intent intent = new Intent(PlanDayScreen.this, ThingsToDoListScreen.class); startActivity(intent); } }); } else { b.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // Date } }); } break; case R.id.buttonBottom2: if (!areThereCheckedBoxes()) { b.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // Map if (day != null) { CurrentItemsStorage.mapModelObjects = new ModelObject[0]; CurrentItemsStorage.mapModelObjects[1] = day; Intent intent = new Intent(PlanDayScreen.this, PlanTabsScreen.class); startActivity(intent); } } }); } else { b.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // Confirm new AlertDialog.Builder(PlanDayScreen.this) .setIcon(android.R.drawable.ic_dialog_alert) .setTitle( "Remove " + checkedCount() + " things to do") .setMessage( "Do you really wish to remove " + checkedCount() + " things to do from your plan?") .setPositiveButton("Yes", new DialogInterface.OnClickListener() { @Override public void onClick( DialogInterface dialog, int which) { // Remove for (int i = 0; i < lista .getCount(); i++) { if (checkedBoxes.get(i)) { // Get checked item Object ttd = adapter .getItem(i); if (ttd instanceof ScheduledThingToDo) { try { // Remove it ScheduledThingToDo tTD = (ScheduledThingToDo) ttd; Planner.unschedule( tTD.ttdId, tTD.time); } catch (OfflineException ex) { Toast.makeText( PlanDayScreen.this, getResources() .getString( R.string.unschedule_error), Toast.LENGTH_SHORT) .show(); } catch (InvalidURLException e) { } } } } // Reset checkedBoxes and // BottomLayout checkedBoxes = new BitSet(); setUpBottomLayout(false); // Redraws the list setUpList(); } }).setNegativeButton("No", null).show(); } }); } break; case R.id.buttonBottom3: b.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // Update } }); break; } } /** * Sets up the list */ private void setUpList() { lista = (DragNDropListView) findViewById(R.id.listViewAgenda); new LoadList(); } /** * Counts the number of checked boxes * * @return the number of checked boxes */ private int checkedCount() { int x = 0; for (int i = 0; i < checkedBoxes.length(); i++) { x += checkedBoxes.get(i) ? 1 : 0; } return x; } /** * Changes the buttoms on the bottom action bar. If you pass true, you get * the "delete items" action bar. Else, you get the "add items" action bar. * * @param isAnythingMarked * True if you want to delete items, false if you want to add * them. */ private void setUpBottomLayout(boolean isAnythingMarked) { ImageButton b1 = (ImageButton) findViewById(R.id.buttonBottom1); ImageButton b2 = (ImageButton) findViewById(R.id.buttonBottom2); ImageButton b3 = (ImageButton) findViewById(R.id.buttonBottom3); b1.setImageDrawable(getResources().getDrawable( isAnythingMarked ? R.drawable.action_plans : R.drawable.action_add)); b2.setImageDrawable(getResources().getDrawable( isAnythingMarked ? R.drawable.action_delete : R.drawable.action_map)); b3.setImageDrawable(getResources() .getDrawable(R.drawable.action_reload)); setUpBottomButton(R.id.buttonBottom1); setUpBottomButton(R.id.buttonBottom2); setUpBottomButton(R.id.buttonBottom3); } private boolean areThereCheckedBoxes() { for (int i = 0; i < checkedBoxes.length(); i++) { if (checkedBoxes.get(i)) { return true; } } return false; } public void clickControlRowHandler(View v) { Intent intent = new Intent(PlanDayScreen.this, ThingsToDoListScreen.class); startActivity(intent); } /** * Drop Listener for the DragNDropListView */ private DropListener mDropListener = new DropListener() { public void onDrop(final int from, int to) { if (to == 0) to = 1; // If initial position is the same as final position, do nothing. if (to != from) { if (adapter instanceof DragNDropAdapter) { if (adapter.getItem(from) instanceof ScheduledThingToDo) { new DropCall(from, to); ((DragNDropAdapter) adapter).onDrop(from, to); } } } } }; public OnClickListener onClickSave = new OnClickListener() { public void onClick(View v) { try { if (Login.isRegistered()) { if (Planner.loadPlan().name == null) { CurrentItemsStorage.shallGoAfterCreatePlan = PlanDayScreen.class; if (idDroppedOrDeleted) { manageListChanges(); } Intent intent = new Intent(PlanDayScreen.this, SavePlanScreen.class); startActivity(intent); return; } } else { CurrentItemsStorage.currentPlan = Planner.loadPlan(); CurrentItemsStorage.shallGoAfterLogin = PlanDayScreen.class; Intent intent = new Intent(PlanDayScreen.this, LoginScreen.class); startActivity(intent); } } catch (OfflineException e) { Toast.makeText(PlanDayScreen.this, getResources().getString(R.string.plan_error), Toast.LENGTH_SHORT).show(); } if (idDroppedOrDeleted) { manageListChanges(); } } }; /** * Unschedules every TTD, then schedules it again. */ private void manageListChanges() { for (int i = 0; i < adapter.getCount(); i++) { Object item = adapter.getItem(i); if (item instanceof ScheduledThingToDo) { try { ScheduledThingToDo scheduled = (ScheduledThingToDo) item; Planner.unschedule(scheduled.getId(), scheduled.time); } catch (Exception e) { e.printStackTrace(); } } } int state = 0; for (int it = 0; it < adapter.getCount(); it++) { Object item = adapter.getItem(it); TimeOfDay tod = TimeOfDay.morning; if (item instanceof ScheduledThingToDo) { switch (state) { case 1: tod = TimeOfDay.morning; break; case 2: tod = TimeOfDay.afternoon; break; case 3: tod = TimeOfDay.evening; break; } try { Planner.schedule(((ScheduledThingToDo) item).ttdId, new ScheduledTime(CurrentItemsStorage.currentDay, tod)); } catch (OfflineException e) { Toast.makeText(PlanDayScreen.this, "No connection", Toast.LENGTH_SHORT).show(); } } else { state++; } } } /** * RemoveListener for the DragNDropListView */ private RemoveListener mRemoveListener = new RemoveListener() { public void onRemove(int which) { // ListAdapter adapter = getListAdapter(); if (adapter instanceof DragNDropAdapter) { ((DragNDropAdapter) adapter).onRemove(which); lista.invalidateViews(); } } }; /** * DragListener for the DragNDropListView */ private DragListener mDragListener = new DragListener() { int backgroundColor = getResources().getColor(R.color.yellow); int defaultBackgroundColor = getResources().getColor(R.color.blue_bg); public void onDrag(int x, int y, ListView listView) { // TODO Auto-generated method stub } public void onStartDrag(View itemView) { itemView.setVisibility(View.INVISIBLE); itemView.setBackgroundColor(backgroundColor); ImageView iv = (ImageView) itemView.findViewById(R.id.imageView1); if (iv != null) iv.setVisibility(View.INVISIBLE); } public void onStopDrag(View itemView) { itemView.setVisibility(View.VISIBLE); itemView.setBackgroundColor(defaultBackgroundColor); ImageView iv = (ImageView) itemView.findViewById(R.id.imageView1); if (iv != null) iv.setVisibility(View.VISIBLE); } }; private class LoadList extends AsyncTask<Void, Void, Void> { public LoadList() { execute(); } @Override protected void onPreExecute() { String[] x = { "Loading..." }; addNewTTD(); ArrayAdapter<String> asdf = new ArrayAdapter<String>( PlanDayScreen.this, R.layout.add_more, x); lista.setAdapter(asdf); } @Override protected Void doInBackground(Void... arg0) { ScheduledThingToDo[] ttds; try { try { // Loads current day day = Planner.loadDay(CurrentItemsStorage.currentDay); ttds = day.ttds; } catch (NullPointerException ex) { // No current day: Loads today Day day = Planner.loadDay(Calendar.getInstance()); ttds = day.ttds; } } catch (OfflineException e) { // Offline Toast.makeText(PlanDayScreen.this, getResources().getString(R.string.day_error), Toast.LENGTH_SHORT).show(); ttds = new ScheduledThingToDo[0]; } catch (UnauthorizedException e) { // Something strange happened ttds = new ScheduledThingToDo[0]; } catch (Exception e) { // Something even more strange happened ttds = new ScheduledThingToDo[0]; } adapter = new DragNDropAdapter(PlanDayScreen.this, new int[] { R.layout.dragitemttd }, ttds); adapter.setOnCheckListener(new OnCheckListener() { @Override public void onCheck(boolean isChecked, int position) { checkedBoxes.set(position, isChecked); setUpBottomLayout(areThereCheckedBoxes()); } }); return null; } @Override protected void onPostExecute(Void result) { lista.setAdapter(adapter); lista.setDropListener(mDropListener); lista.setRemoveListener(mRemoveListener); lista.setDragListener(mDragListener); } } private class DropCall extends AsyncTask<Void, Void, Void> { private int from, to; public DropCall(int from, int to) { this.from = from; this.to = to; execute(); lista.invalidateViews(); } @Override protected Void doInBackground(Void... arg0) { changeScheduledTTD(from, to); return null; } /** * Unschedules a TTD and then re-schedules it in its proper place * * @param from * The position the TTD came from * @param to * The position the TTD has been dragged to */ protected void changeScheduledTTD(int from, int to) { ScheduledThingToDo currentTTD; if (adapter.getItem(to) instanceof ScheduledThingToDo) currentTTD = (ScheduledThingToDo) adapter.getItem(to); else return; int indexMorning = 0; int indexAfternoon = 0; int indexEvening = 0; Object item = null; String currentTime = null; // Gets the indexes for Morning, Afternoon and Evening for (int i = 0; i < adapter.getCount(); i++) { item = adapter.getItem(i); if (item instanceof String) { currentTime = (String) item; if (currentTime.equals("MORNING")) { indexMorning = i; } if (currentTime.equals("AFTERNOON")) { indexAfternoon = i; } if (currentTime.equals("EVENING")) { indexEvening = i; } } } TimeOfDay tod = null; if (to >= indexEvening) { tod = TimeOfDay.evening; } else if (to >= indexAfternoon) { tod = TimeOfDay.afternoon; } else if (to >= indexMorning) { tod = TimeOfDay.morning; } if (!currentTTD.time.getTimeOfDay().equals(tod)) { try { Planner.unschedule(currentTTD.ttdId, currentTTD.time); Planner.schedule(currentTTD.ttdId, new ScheduledTime( CurrentItemsStorage.currentDay, tod)); } catch (OfflineException e) { e.printStackTrace(); } } } } } 

 // inner class or normal class ... change scope if needed private class DragListener { int color = 0; public DragListener(Context context) { color = context.getResource().getColor(R.color.yellow); } } // activity private DragListener mDragListener; public void onCreate(...) { mDragListener = new DragListener(this); // more code } 

 int backgroundColor = Color.YELLOW; 

 int backgroundColor = getResources().getColor(R.color.yellow);