我正在使用 Fragments 和 tabHost，一切都很好。我需要做的是：当我按下一个按钮时，它必须将我带到另一个片段，我需要更改选项卡的指示器：
当我按下按钮时，片段会更改，但选项卡指示器不会。
现在，指示器仅在按下 Tab 时发生变化，但我想要在按下按钮时获得相同的效果。这可能吗？。
代码：
public class AplicacionActivity extends FragmentActivity {
final public static String tagFragmentClientes = "fragmentClientes";
final public static String tagFragmentSettings = "fragmentSettings";
final public static String tagFragmentLogout = "fragmentLogout";
/*Principal fragments of the tabs*/
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();
initializeTab();
}
public void initializeTab() {
Resources res = getResources();
TabHost.TabSpec spec = mTabHost.newTabSpec(tagFragmentClientes);
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(tagFragmentSettings);
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(tagFragmentLogout);
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);
}
TabHost.OnTabChangeListener listener = new TabHost.OnTabChangeListener() {
public void onTabChanged(String tabId) {
/*Set current tab..*/
if(tabId.equals(tagFragmentClientes)){
pushFragments(tagFragmentClientes, fragmentClientes, false);
}else if(tabId.equals(tagFragmentSettings)){
pushFragments(tagFragmentSettings, fragmentSettings, false);
}else if(tabId.equals(tagFragmentLogout)){
mostrarAvisoCierreApp();
//nos saque el aviso de nuevo si lo volvemos a presionar.
mTabHost.getCurrentTabView().setOnTouchListener(new OnTouchListener(){
@Override
public boolean onTouch(View v, MotionEvent event){
if (event.getAction() == MotionEvent.ACTION_DOWN){
if (mTabHost.getCurrentTabTag().equals(tagFragmentLogout)){
mostrarAvisoCierreApp();
}
}
return false;
}
});
}
}
};
public void pushFragments(String tag, Fragment fragment, boolean backStack){
FragmentManager manager = getSupportFragmentManager();
FragmentTransaction ft = manager.beginTransaction();
ft.replace(android.R.id.tabcontent, fragment, tag);
if(backStack){
ft.addToBackStack(null);
}
ft.commit();
}
}