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POFragmentTabhost no activity illegalstateexception error
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  1. POFragmentTabhost no activity illegalstateexception error
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    copied!<p>I am using fragmenttabhost for fragments . In one fragment there is are two child fragments . When Changing fragment from child fragment working fine . However when going to some other tab and comming back making error</p> <pre><code>public class MainActivity extends FragmentActivity implements OnTabChangeListener { private FragmentTabHost mTabHost; private HashMap&lt;String, Stack&lt;Fragment&gt;&gt; mStacks; private String mCurrentTab; @Override protected void onCreate(Bundle saveInstanceState) { super.onCreate(saveInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); setContentView(R.layout.bottom_tabs); mTabHost = (FragmentTabHost) findViewById(android.R.id.tabhost); mTabHost.setup(this, getSupportFragmentManager(), R.id.realtabcontent); mTabHost.setOnTabChangedListener(this); mStacks = new HashMap&lt;String, Stack&lt;Fragment&gt;&gt;(); mStacks.put(AppConstants.DEAL_FRAGMENT, new Stack&lt;Fragment&gt;()); mStacks.put(AppConstants.CONN_FRAGMENT, new Stack&lt;Fragment&gt;()); mStacks.put(AppConstants.PROFILE_FRAGMENT, new Stack&lt;Fragment&gt;()); mStacks.put(AppConstants.MORE_FRAGMENT, new Stack&lt;Fragment&gt;()); initializeTabs(); } private void initializeTabs() { Bundle b = new Bundle(); b.putString("key", AppConstants.DEAL_FRAGMENT); mTabHost.addTab(mTabHost.newTabSpec(AppConstants.DEAL_FRAGMENT) .setIndicator("Deal"), DealFragment.class, b); // b = new Bundle(); b.putString("key", AppConstants.CONN_FRAGMENT); mTabHost.addTab(mTabHost.newTabSpec(AppConstants.CONN_FRAGMENT) .setIndicator("Conn"), ConnFragment.class, b); b = new Bundle(); b.putString("key", AppConstants.PROFILE_FRAGMENT); mTabHost.addTab(mTabHost.newTabSpec(AppConstants.PROFILE_FRAGMENT) .setIndicator("Profile"), ProfileFragment.class, b); b = new Bundle(); b.putString("key", AppConstants.MORE_FRAGMENT); mTabHost.addTab(mTabHost.newTabSpec(AppConstants.MORE_FRAGMENT) .setIndicator("More"), MoreFragment.class, b); } public void pushFragments(String tag, Fragment fragment, boolean shouldAnimate, boolean shouldAdd) { /*if (shouldAdd) mStacks.get(tag).push(fragment);*/ FragmentManager manager = getSupportFragmentManager(); FragmentTransaction ft = manager.beginTransaction(); if (shouldAnimate) ft.setCustomAnimations(R.anim.slide_in_right, R.anim.slide_out_left); ft.replace(R.id.realtabcontent, fragment); ft.commit(); } @Override public void onTabChanged(String tabId) { mCurrentTab = tabId; Log.d("Tabid", "" + mCurrentTab); if (mStacks.get(tabId).size() == 0) { if (tabId.equals(AppConstants.DEAL_FRAGMENT)) { pushFragments(tabId, new DealFragment(), false, true); } else if (tabId.equals(AppConstants.CONN_FRAGMENT)) { pushFragments(tabId, new ConnFragment(), false, true); } else if (tabId.equals(AppConstants.PROFILE_FRAGMENT)) { pushFragments(tabId, new ProfileFragment(), false, true); } else if (tabId.equals(AppConstants.MORE_FRAGMENT)) { pushFragments(tabId, new MoreFragment(), false, true); } } else { pushFragments(tabId, mStacks.get(tabId).lastElement(), false, false); } } public void popFragments() { Fragment fragment = mStacks.get(mCurrentTab).elementAt( mStacks.get(mCurrentTab).size() - 2); mStacks.get(mCurrentTab).pop(); FragmentManager manager = getSupportFragmentManager(); FragmentTransaction ft = manager.beginTransaction(); ft.setCustomAnimations(R.anim.slide_in_left, R.anim.slide_out_right); ft.replace(R.id.realtabcontent, fragment); ft.commit(); } @Override public void onBackPressed() { if(((BaseFragment)mStacks.get(mCurrentTab).lastElement()).onBackPressed() == false){ if(mStacks.get(mCurrentTab).size() == 1){ super.onBackPressed(); // or call finish.. }else{ popFragments(); } }else{ } } </code></pre> <p>}</p> <p>public class DealFragment extends BaseFragment implements OnTabChangeListener {</p> <pre><code>private FragmentTabHost mTabHost; private String mCurrentTab; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { mTabHost = new FragmentTabHost(getActivity()); mTabHost.setup(getActivity(), getChildFragmentManager(), R.id.menu_settings); mTabHost.setOnTabChangedListener(this); initializeChildTabHost(); return mTabHost; } private void initializeChildTabHost() { Bundle b = new Bundle(); b.putString("key", AppConstants.LIST_DEAL_FRAGMENT); mTabHost.addTab( mTabHost.newTabSpec(AppConstants.LIST_DEAL_FRAGMENT) .setIndicator( "List"), CategoryListFragment.class, b); // b = new Bundle(); b.putString("key", AppConstants.CATEGORY_DEAL_FRAGMENT); mTabHost.addTab( mTabHost.newTabSpec(AppConstants.CATEGORY_DEAL_FRAGMENT).setIndicator( "Category"), CategoryFragment.class, b); } @Override public void onTabChanged(String tabId) { mCurrentTab = tabId; Log.d("Current Child Tab", ""+mCurrentTab); } </code></pre> <p>}</p> <p>public class CategoryListFragment extends BaseFragment implements OnClickListener{</p> <pre><code>Button button; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.layout, container, false); button = (Button)view.findViewById(R.id.addNewFrag); button.setOnClickListener(this); return view; } @Override public void onClick(View v) { if(v==button){ mActivity.pushFragments(AppConstants.LIST_DEAL_FRAGMENT, new InviteFrndFragment(), true, true); } } </code></pre> <p>}</p> <p>public class BaseFragment extends Fragment { public MainActivity mActivity;</p> <pre><code>@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mActivity = (MainActivity) this.getActivity(); } public boolean onBackPressed() { return false; } public void onActivityResult(int requestCode, int resultCode, Intent data) { } </code></pre> <p>}</p>
 

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