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PONullPointer.Exception PopupWindow.getMaxAvailableHeight using ListPopupWindow
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copied!<p>I'm trying to use a PopupWindow with an adapter but this exception occurs. I tried to search for something that solve this problem but I didn't found anything.</p> <p>Here is the Exception</p> <pre><code>07-18 10:58:27.600: D/dalvikvm(15218): GC_FOR_ALLOC freed 56K, 3% free 6409K/6595K, paused 40ms 07-18 10:58:27.600: I/dalvikvm-heap(15218): Grow heap (frag case) to 6.804MB for 513744-byte allocation 07-18 10:58:27.669: D/dalvikvm(15218): GC_FOR_ALLOC freed 8K, 3% free 6902K/7111K, paused 41ms 07-18 10:58:27.749: D/dalvikvm(15218): GC_CONCURRENT freed <1K, 3% free 6902K/7111K, paused 3ms+12ms 07-18 10:58:29.619: D/post(15218): Result from post JsonPost : 200 : {"success":false} 07-18 10:58:29.809: D/dalvikvm(15218): GC_CONCURRENT freed 103K, 3% free 7235K/7431K, paused 3ms+2ms 07-18 10:58:30.459: D/dalvikvm(15218): GC_FOR_ALLOC freed 217K, 5% free 7333K/7687K, paused 99ms 07-18 10:58:30.499: I/dalvikvm-heap(15218): Grow heap (frag case) to 12.920MB for 5981168-byte allocation 07-18 10:58:30.569: D/dalvikvm(15218): GC_FOR_ALLOC freed <1K, 3% free 13174K/13575K, paused 35ms 07-18 10:58:30.649: D/dalvikvm(15218): GC_CONCURRENT freed <1K, 3% free 13174K/13575K, paused 3ms+2ms 07-18 10:58:31.499: D/dalvikvm(15218): GC_CONCURRENT freed 6137K, 42% free 9002K/15303K, paused 3ms+3ms 07-18 10:58:59.759: D/AndroidRuntime(15218): Shutting down VM 07-18 10:58:59.759: W/dalvikvm(15218): threadid=1: thread exiting with uncaught exception (group=0x40014760) 07-18 10:58:59.769: E/AndroidRuntime(15218): FATAL EXCEPTION: main 07-18 10:58:59.769: E/AndroidRuntime(15218): java.lang.NullPointerException 07-18 10:58:59.769: E/AndroidRuntime(15218): at android.widget.PopupWindow.getMaxAvailableHeight(PopupWindow.java:1164) 07-18 10:58:59.769: E/AndroidRuntime(15218): at android.widget.ListPopupWindow.buildDropDown(ListPopupWindow.java:1067) 07-18 10:58:59.769: E/AndroidRuntime(15218): at android.widget.ListPopupWindow.show(ListPopupWindow.java:517) 07-18 10:58:59.769: E/AndroidRuntime(15218): at br.com.timo.atlas.PrincipalActivity.onClick(PrincipalActivity.java:123) 07-18 10:58:59.769: E/AndroidRuntime(15218): at android.view.View.performClick(View.java:3110) 07-18 10:58:59.769: E/AndroidRuntime(15218): at android.view.View$PerformClick.run(View.java:11934) 07-18 10:58:59.769: E/AndroidRuntime(15218): at android.os.Handler.handleCallback(Handler.java:587) 07-18 10:58:59.769: E/AndroidRuntime(15218): at android.os.Handler.dispatchMessage(Handler.java:92) 07-18 10:58:59.769: E/AndroidRuntime(15218): at android.os.Looper.loop(Looper.java:132) 07-18 10:58:59.769: E/AndroidRuntime(15218): at android.app.ActivityThread.main(ActivityThread.java:4123) 07-18 10:58:59.769: E/AndroidRuntime(15218): at java.lang.reflect.Method.invokeNative(Native Method) 07-18 10:58:59.769: E/AndroidRuntime(15218): at java.lang.reflect.Method.invoke(Method.java:491) 07-18 10:58:59.769: E/AndroidRuntime(15218): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841) 07-18 10:58:59.769: E/AndroidRuntime(15218): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599) 07-18 10:58:59.769: E/AndroidRuntime(15218): at dalvik.system.NativeStart.main(Native Method) </code></pre> <p>And here's my main class code</p> <pre><code>public class PrincipalActivity extends Activity implements OnClickListener{ private ListView lv_fragmentLista_Lista; private ListView lv_fragmentLista_ListaDireita; private ListPopupWindow listPopupWindow; private View popupWindow; private Button bt_activityTopBarMenu_AreaMusculares; private Button bt_activityTopBarMenu_MeusFavoritos; private Button bt_activityTopBarMenu_Dicionario; private Button bt_activityInfosPrincipal_BotaoMais; private Button bt_activityInfosPrincipal_BotaoMenos; private GrupoMuscularAdapter gma; private MusculoAdapter ma; private PopupAdapter popupAdapter; // private final Typeface tfCabinSemiBoldItalic = Typeface.createFromAsset(getAssets(), "fonts/Cabin-SemiBoldItalic.ttf"); // private final Typeface tfCabinMediumItalic = Typeface.createFromAsset(getAssets(), "fonts/Cabin-MediumItalic.ttf"); // private final Typeface tfCabinMedium = Typeface.createFromAsset(getAssets(), "fonts/Cabin-Medium.ttf"); // private final Typeface tfCabinItalic = Typeface.createFromAsset(getAssets(), "fonts/Cabin-Italic.ttf"); // private final Typeface tfCabinBoldItalic = Typeface.createFromAsset(getAssets(), "fonts/Cabin-BoldItalic.ttf"); // private final Typeface tfCabinBold = Typeface.createFromAsset(getAssets(), "fonts/Cabin-Bold.ttf"); @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_principal); AtlasDataBaseHelper dbHelper = new AtlasDataBaseHelper(this); bt_activityTopBarMenu_AreaMusculares = (Button) findViewById(R.id.bt_activityTopBarMenu_AreaMusculares); bt_activityTopBarMenu_AreaMusculares.setOnClickListener(this); bt_activityTopBarMenu_MeusFavoritos = (Button) findViewById(R.id.bt_activityTopBarMenu_MeusFavoritos); bt_activityTopBarMenu_MeusFavoritos.setOnClickListener(this); bt_activityTopBarMenu_Dicionario = (Button) findViewById(R.id.bt_activityTopBarMenu_Dicionario); bt_activityTopBarMenu_Dicionario.setOnClickListener(this); bt_activityInfosPrincipal_BotaoMais = (Button) findViewById(R.id.bt_activityInfosPrincipal_BotaoMais); bt_activityInfosPrincipal_BotaoMais.setOnClickListener(this); bt_activityInfosPrincipal_BotaoMenos = (Button) findViewById(R.id.bt_activityInfosPrincipal_BotaoMenos); bt_activityInfosPrincipal_BotaoMenos.setOnClickListener(this); List<AreaMuscular> lstAreaMuscular = dbHelper.selectAllAreaMuscular(); gma = new GrupoMuscularAdapter(this,lstAreaMuscular); ma = new MusculoAdapter(this); List<Dicionario> lstDicionario = dbHelper.selectAllDicionario(); popupAdapter = new PopupAdapter(this,lstDicionario); popupWindow = findViewById(R.layout.fragment_lista); listPopupWindow = new ListPopupWindow(this); listPopupWindow.setAnchorView(popupWindow); listPopupWindow.setContentWidth(ListPopupWindow.WRAP_CONTENT); listPopupWindow.setHeight(ListPopupWindow.WRAP_CONTENT); listPopupWindow.setInputMethodMode(ListPopupWindow.INPUT_METHOD_FROM_FOCUSABLE); listPopupWindow.setAdapter(popupAdapter); lv_fragmentLista_ListaDireita = (ListView) findViewById(R.id.lv_activity_ListaMenuDireito); lv_fragmentLista_ListaDireita.setAdapter(ma); lv_fragmentLista_Lista = (ListView) findViewById(R.id.lv_activity_ListaMenuEsquerdo); lv_fragmentLista_Lista.setAdapter(gma); lv_fragmentLista_Lista.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { mudaFundoBotao(0); lv_fragmentLista_Lista.setVisibility(View.GONE); lv_fragmentLista_ListaDireita.setVisibility(View.VISIBLE); bt_activityTopBarMenu_AreaMusculares.setVisibility(View.VISIBLE); Log.i("ID", id + ""); Log.i("POSITION", position + ""); } }); setFontFace(); } @Override public void onClick(View v) { if(v.getId() == R.id.bt_activityTopBarMenu_AreaMusculares){ mudaFundoBotao(R.id.bt_activityTopBarMenu_AreaMusculares); bt_activityTopBarMenu_AreaMusculares.setVisibility(View.GONE); lv_fragmentLista_ListaDireita.setVisibility(View.GONE); lv_fragmentLista_Lista.setVisibility(View.VISIBLE); } if(v.getId() == R.id.bt_activityTopBarMenu_MeusFavoritos){ mudaFundoBotao(R.id.bt_activityTopBarMenu_MeusFavoritos); } if(v.getId() == R.id.bt_activityTopBarMenu_Dicionario){ mudaFundoBotao(R.id.bt_activityTopBarMenu_Dicionario); listPopupWindow.show(); } if(v.getId() == R.id.bt_activityInfosPrincipal_BotaoMenos){ } if(v.getId() == R.id.bt_activityInfosPrincipal_BotaoMais){ } } private void mudaFundoBotao(int idBotao){ if(idBotao == R.id.bt_activityTopBarMenu_AreaMusculares){ bt_activityTopBarMenu_AreaMusculares.setBackgroundResource(R.drawable.bt_ativo); bt_activityTopBarMenu_MeusFavoritos.setBackgroundResource(R.drawable.bt_normal); bt_activityTopBarMenu_Dicionario.setBackgroundResource(R.drawable.bt_normal); } if(idBotao == R.id.bt_activityTopBarMenu_MeusFavoritos){ bt_activityTopBarMenu_AreaMusculares.setBackgroundResource(R.drawable.bt_normal); bt_activityTopBarMenu_MeusFavoritos.setBackgroundResource(R.drawable.bt_ativo); bt_activityTopBarMenu_Dicionario.setBackgroundResource(R.drawable.bt_normal); } if(idBotao == R.id.bt_activityTopBarMenu_Dicionario){ bt_activityTopBarMenu_AreaMusculares.setBackgroundResource(R.drawable.bt_normal); bt_activityTopBarMenu_MeusFavoritos.setBackgroundResource(R.drawable.bt_normal); bt_activityTopBarMenu_Dicionario.setBackgroundResource(R.drawable.bt_ativo); } if(idBotao == 0){ bt_activityTopBarMenu_AreaMusculares.setBackgroundResource(R.drawable.bt_normal); bt_activityTopBarMenu_MeusFavoritos.setBackgroundResource(R.drawable.bt_normal); bt_activityTopBarMenu_Dicionario.setBackgroundResource(R.drawable.bt_normal); } } private void setFontFace(){ Typeface tfCabinRegular = Typeface.createFromAsset(getAssets(), "fonts/Cabin-Regular.ttf"); Typeface tfCabinSemiBold = Typeface.createFromAsset(getAssets(), "fonts/Cabin-SemiBold.ttf"); bt_activityTopBarMenu_AreaMusculares.setTypeface(tfCabinSemiBold); bt_activityTopBarMenu_Dicionario.setTypeface(tfCabinRegular); bt_activityTopBarMenu_MeusFavoritos.setTypeface(tfCabinRegular); } </code></pre> <p>}</p> <p>Line 123 is the listPopupWindow.show();</p> <p>I'm creating the ListPopupWindow and trying to show when I click on the button R.id.bt_activityTopBarMenu_Dicionario.</p> <p>Thanks!</p>

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