Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trialchandrashekhar singh
507 PointsI am getting this problem
Attempt to invoke virtual method 'int android.os.Bundle.getInt(java.lang.String)' on a null object reference at com.csing1s.myapplication.CheckBoxexFragments.<init>(CheckBoxexFragments.java:17) at com.csing1s.myapplication.IngredientFragment.<init>(IngredientFragment.java:0) at com.csing1s.myapplication.ViewPagerFragment.onCreateView(ViewPagerFragment.java:32) at android.support.v4.app.Fragment.performCreateView(Fragment.java:1974) at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067) at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1252) at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738) at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1617)
Arthy Shankari Maragathasundaram
14,849 PointsIt would be great if you could paste the code here along with the log.
4 Answers
Jeeya M
16,839 PointsOn Line 17 of CheckBoxesFragments you call getInt() on a bundle. It looks like you may have passed in a string on the getInt() method from what I see in the log. Can you send the code?
chandrashekhar singh
507 Pointspublic abstract class CheckBoxexFragments extends Fragment { private static final String KEY_CHECKED_BOXEX ="key_checked_box"; int index = getArguments().getInt(ViewPagerFragment.KEY_RECIEPE_INDEX); String [] contents= getContents(index); private CheckBox[] mCheckBoxes= new CheckBox[contents.length]; @Nullable @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // int index = getArguments().getInt(ViewPagerFragment.KEY_RECIEPE_INDEX); // boolean isIngredients = getArguments().getBoolean(ViewPagerFragment.KEY_IS_INGREDIENTS); View view = inflater.inflate(R.layout.checkboxfragments,container,false); LinearLayout linearLayout = (LinearLayout) view.findViewById(R.id.checkboxeslayoutFragment);
String [] contents= getContents(index);
/*
if(isIngredients)
{
contents= Recipie.ingredients[index].split("'");
}
else
{
contents= Recipie.ingredients[index].split("'");
}
*/
//mCheckBoxes = new CheckBox[contents.length];
boolean[] checkedBoxex = new boolean[mCheckBoxes.length];
if(savedInstanceState != null && savedInstanceState.getBooleanArray(KEY_CHECKED_BOXEX)!=null);
{
checkedBoxex = savedInstanceState.getBooleanArray(KEY_CHECKED_BOXEX);
}
setupCheckBoxes(contents,linearLayout,checkedBoxex);
return view;
}
public abstract String[] getContents(int index);
private void setupCheckBoxes(String[] contents, ViewGroup container, boolean[] checkedBoxex) {
for (String in : contents) {
int i = 0;
mCheckBoxes[i] = new CheckBox(getActivity());
mCheckBoxes[i].setPadding(8, 16, 8, 16);
mCheckBoxes[i].setTextSize(20f);
mCheckBoxes[i].setText(in);
container.addView(mCheckBoxes[i]);
if (checkedBoxex[i]) {
mCheckBoxes[i].toggle();
i++;
}
}
}
@Override
public void onSaveInstanceState(Bundle outState) {
boolean[]stateOfCheckBoxex = new boolean[mCheckBoxes.length];
int i =0;
for (CheckBox checkBox:mCheckBoxes)
{
stateOfCheckBoxex[i]=checkBox.isChecked();
i++;
}
outState.putBooleanArray(KEY_CHECKED_BOXEX,stateOfCheckBoxex);
super.onSaveInstanceState(outState);
}
}
chandrashekhar singh
507 Pointspublic class MainActivity extends AppCompatActivity implements fragment.RecipieSelected { public static final String LIST_FRAGMENT="list_fragment"; public static final String view_FRAGMENT="view_fragment";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
boolean isTablet = getResources().getBoolean(R.bool.is_tablet);
Fragment savefragment = getSupportFragmentManager().findFragmentByTag(LIST_FRAGMENT);
if(savefragment==null) {
fragment fragment = new fragment();
FragmentManager manager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = manager.beginTransaction();
fragmentTransaction.add(R.id.placeholder, fragment,LIST_FRAGMENT);
fragmentTransaction.commit();
}
}
@Override
public void OnListSelectedRecipie(int index) {
ViewPagerFragment fragment = new ViewPagerFragment();
Bundle bundle = new Bundle();
bundle.putInt(ViewPagerFragment.KEY_RECIEPE_INDEX,index);
fragment.setArguments(bundle);
FragmentManager manager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = manager.beginTransaction();
fragmentTransaction.replace(R.id.placeholder,fragment,view_FRAGMENT);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
}
}
chandrashekhar singh
507 Pointspublic class ViewPagerFragment extends Fragment { public static final String KEY_RECIEPE_INDEX = "recipe_index"; // public static final String KEY_IS_INGREDIENTS="key_is_Ingredients"; @Nullable @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { int index = getArguments().getInt(KEY_RECIEPE_INDEX); getActivity().setTitle(Recipie.names[index]); //Toast.makeText(getContext(),Recipie.names[index],Toast.LENGTH_SHORT).show();
View view = inflater.inflate(R.layout.fragmentviewpager, container, false);
final IngredientFragment mingredientFragment = new IngredientFragment();
Bundle bundle = new Bundle();
bundle.putInt(KEY_RECIEPE_INDEX,index);
// bundle.putBoolean(KEY_IS_INGREDIENTS,true);
mingredientFragment.setArguments(bundle);
final DirectionFragments mdirectionFragments = new DirectionFragments();
bundle = new Bundle();
bundle.putInt(KEY_RECIEPE_INDEX,index);
// bundle.putInt(KEY_RECIEPE_INDEX,index);bundle.putBoolean(KEY_IS_INGREDIENTS,false);
mdirectionFragments.setArguments(bundle);
ViewPager viewpager = (ViewPager) view.findViewById(R.id.vp);
viewpager.setAdapter(new FragmentPagerAdapter(getFragmentManager()) {
@Override
public Fragment getItem(int position) {
if(position == 0)
return mingredientFragment;
else {
return mdirectionFragments;
}
}
@Override
public CharSequence getPageTitle(int position) {
return position == 0 ? "Ingredients" : "Directions";
}
@Override
public int getCount() {
return 2;
}
});
TabLayout tabLayout = (TabLayout) view.findViewById(R.id.Tablayout);
tabLayout.setupWithViewPager(viewpager);
return view;
}
@Override
public void onStop() {
super.onStop();
getActivity().setTitle(getResources().getString(R.string.app_name));
}
}
chandrashekhar singh
507 Pointspublic class IngredientFragment extends CheckBoxexFragments { @Override public String[] getContents(int index) { return Recipie.ingredients[index].split("'"); } }
Jeeya M
16,839 PointsJeeya M
16,839 PointsOn Line 17 of CheckBoxesFragments you call getInt() on a bundle. It looks like you may have passed in a string on the getInt() method from what I see in the log. Can you send the code?