2 days ago I posted a question: New layouts in TabHost. So I decided to create tabs with fragments instead of tabActivity. So now I have 3 tabs: tab_clients, tab_settings, tab_logut. When I run my app tab1 is showed and if I rotate my device everything works fine. My surprise comes when I change to tab2 or tab3, from these tabs when I rotate my device I get the view of tab1. This is my principal container:
public class AplicacionActivity extends FragmentActivity {
/* Tab identif */
static String TAB_clientes = "Clientes";
static String TAB_settings = "Settings";
static String TAB_logout = "Logout";
TabHost mTabHost;
ClientesActivity fragmentClientes;
SettingsActivity fragmentSettings;
LogoutActivity fragmentLogout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_aplicacion);
fragmentClientes = new ClientesActivity();
fragmentSettings = new SettingsActivity();
fragmentLogout = new LogoutActivity();
mTabHost = (TabHost)findViewById(android.R.id.tabhost);
mTabHost.setOnTabChangedListener(listener);
mTabHost.setup();
iniTab();
}
public void iniTab() {
Resources res = getResources();
//TabHost.TabSpec: A tab has a tab indicator, content, and a tag that is used to keep track of it.
TabHost.TabSpec spec = mTabHost.newTabSpec(TAB_clientes);
mTabHost.setCurrentTab(-3);
//TabHost.TabContentFactory: Makes the content of a tab when it is selected.
spec.setContent(new TabHost.TabContentFactory() {
public View createTabContent(String tag) {
return findViewById(android.R.id.tabcontent);
}
});
spec.setIndicator(" Clientes ", res.getDrawable(R.drawable.clientes));
mTabHost.addTab(spec);
spec = mTabHost.newTabSpec(TAB_settings);
spec.setContent(new TabHost.TabContentFactory() {
public View createTabContent(String tag) {
return findViewById(android.R.id.tabcontent);
}
});
spec.setIndicator(" Settings ",res.getDrawable(R.drawable.settings));
mTabHost.addTab(spec);
spec = mTabHost.newTabSpec(TAB_logout);
spec.setContent(new TabHost.TabContentFactory() {
public View createTabContent(String tag) {
return findViewById(android.R.id.tabcontent);
}
});
spec.setIndicator(" Logout ",res.getDrawable(R.drawable.logouticon));
mTabHost.addTab(spec);
}
/*
* TabChangeListener for change the tab when is selected
*/
TabHost.OnTabChangeListener listener = new TabHost.OnTabChangeListener() {
public void onTabChanged(String tabId) {
/*Set current tab..*/
if(tabId.equals(TAB_clientes)){
pushFragments(tabId, fragmentClientes);
}else if(tabId.equals(TAB_settings)){
pushFragments(tabId, fragmentSettings);
}else if(tabId.equals(TAB_logout)){
pushFragments(tabId, fragmentLogout);
}
}
};
/*
* insert the fragment into the FrameLayout
*/
public void pushFragments(String tag, Fragment fragment){
FragmentManager manager = getSupportFragmentManager();
FragmentTransaction ft = manager.beginTransaction();
ft.replace(android.R.id.tabcontent, fragment);
ft.commit();
}
The same happens when I click in the button inside of one of my tabs and replace the layout. When I rotate, I get the view of tab1. I have to say that I've run apps that use tabActivity instead of fragments and don't have this problem. So I'm getting a little confuse here.
Any help will be apreciated.
EDITED: The solution for this was:
1.- Create the following method on my FragmentActivity:
protected void onSaveInstanceState(Bundle bundle) {
super.onSaveInstanceState(bundle);
Fragment fragmentAct = this.getSupportFragmentManager().findFragmentById(android.R.id.tabcontent);
bundle.putString("fragmentAct", fragmentoActual.getTag());
Log.e("layout-saving",fragmentAct.getTag());
}
As you can see I'm saving in the bundle the tag of the fragment that I was seeing before I rotate my device.
2.- In my OnCreate method of my FragmentActivity I added the following code:
if (savedInstanceState != null){
String value = savedInstanceState.getString("fragmentAct");
establishLayout(value);
}
3.- I create a method called establishLayout:
public void establishLayout(String tagFragment){
mTabHost.setCurrentTabByTag(tagFragment);
Fragment fragmentoActual = this.getSupportFragmentManager().findFragmentByTag(tagFragment);
if(fragmentoActual!=null){
pushFragments(tagFragment, fragmentoActual);
}
}
4.- I create the method pushFragments:
public void pushFragments(String tag, Fragment fragment){
FragmentManager manager = getSupportFragmentManager();
FragmentTransaction ft = manager.beginTransaction();
ft.replace(android.R.id.tabcontent, fragment, tag);
ft.commit();
}
An that's it!. Every time I change the orientation of the device I dont lose the active layout! Thanks so much for the help that I got from @Yuri :)
