Android, fragment hide and show

Question

public class MyTabListener <T extends SherlockFragment> implements TabListener{ private SherlockFragment mFragment; private final SherlockFragmentActivity mActivity; private final String mTag; private final Class<T> mClass; public MyTabListener(SherlockFragmentActivity mActivity, String mTag, Class<T> mClass) { this.mActivity = mActivity; this.mTag = mTag; this.mClass = mClass; } @Override public void onTabSelected(Tab tab, FragmentTransaction ft) { // Check if the fragment is already initialized if (mFragment == null) { // If not, instantiate and add it to the activity mFragment = (SherlockFragment) SherlockFragment.instantiate( mActivity, mClass.getName()); ft.replace(android.R.id.content, mFragment, mTag); } else { // If it exists, simply attach it in order to show it ft.show(mFragment); } } @Override public void onTabUnselected(Tab tab, FragmentTransaction ft) { if (mFragment != null) { // Detach the fragment, because another one is being attached ft.hide(mFragment); } } @Override public void onTabReselected(Tab tab, FragmentTransaction ft) { // TODO Auto-generated method stub }}

That code hides the fragments but never shows them again ... any suggestions ??

a fair player · Accepted Answer · 2013-06-30 21:20:13Z

I solved it by replacing replace() with add() , So the code looks like this

public class MyTabListener <T extends SherlockFragment> implements TabListener{ private SherlockFragment mFragment; private final SherlockFragmentActivity mActivity; private final String mTag; private final Class<T> mClass; public MyTabListener(SherlockFragmentActivity mActivity, String mTag, Class<T> mClass) { this.mActivity = mActivity; this.mTag = mTag; this.mClass = mClass; } @Override public void onTabSelected(Tab tab, FragmentTransaction ft) { // Check if the fragment is already initialized if (mFragment == null) { // If not, instantiate and add it to the activity mFragment = (SherlockFragment) SherlockFragment.instantiate( mActivity, mClass.getName()); ft.add(android.R.id.content, mFragment, mTag); } else { // If it exists, simply attach it in order to show it ft.show(mFragment); } } @Override public void onTabUnselected(Tab tab, FragmentTransaction ft) { if (mFragment != null) { // Detach the fragment, because another one is being attached ft.hide(mFragment); } } @Override public void onTabReselected(Tab tab, FragmentTransaction ft) { // TODO Auto-generated method stub }}

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