For some reason setCurrentTab is not switching tabs after the first time.
This is the code that I use.
private OnClickListener buttonListener = new OnClickListener(){
@Override
public void onClick(View v) {
tabHost.setCurrentTab(Integer.parseInt((String) v.getTag()));
}
};
It is connected to buttons each of which have a tag that equals the number of of tab to be shown.
When the button is clicked the first time and this method is called then the tab shows up. I can also see that it executes the code that creates the tab contents.
However, once a tab has been shown once and I have moved to another one, clicking back to it doesn’t work.
The method is definitely called and the tag is also correct. I put in commands to print to the log to confirm that. Also, it works first time round so must be okay.
Any idea?
Full code:
public class TestTabs extends TabbedScreen implements TabHost.TabContentFactory{
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
initTabs();
}
@Override
protected void initTabs() {
addTab("0",this);
addTab("1",this);
addTab("2",this);
addTab("3",this);
}
/*
*
* @param extras The Bundle received in onCreate when this class is first created, and which contains the initial set of objects to be displayed.
* @return An array containing all of the objects in the list.
*/
protected Serializable[] getDataArray(Bundle extras) {
int size = extras.size();
Serializable[] data = new Serializable[size];
for (int i = 0; i < size; i++) {
data[i] = extras.getSerializable(Integer.toString(i));
}
return data;
}
@Override
public View createTabContent(String tag) {
// Get the data returned from the servelet and display it in the ListView
Log.d("TestTabs","createTabContent");
ListView lv = (ListView) findViewById(R.id.list_view);
List<String> list1Strings = new ArrayList<String>();
switch (Integer.parseInt(tag)){
case 0:
Log.d("TestTabs","Case 0");
lv.setAdapter(new MyAdapter(this,lv,null));
break;
case 1:
Log.d("TestTabs","Case 1");
list1Strings.add("Item 21");
list1Strings.add("Item 22");
list1Strings.add("Item 23");
list1Strings.add("Item 24");
lv.setAdapter(new ArrayAdapter(this, android.R.layout.simple_list_item_1, list1Strings));
break;
case 2:
Log.d("TestTabs","Case 2");
list1Strings.add("Item 31");
list1Strings.add("Item 32");
list1Strings.add("Item 33");
list1Strings.add("Item 34");
lv.setAdapter(new ArrayAdapter(this, android.R.layout.simple_list_item_1, list1Strings));
break;
case 3:
Log.d("TestTabs","Case 3");
list1Strings.add("Item 41");
list1Strings.add("Item 42");
list1Strings.add("Item 43");
list1Strings.add("Item 44");
lv.setAdapter(new ArrayAdapter(this, android.R.layout.simple_list_item_1, list1Strings));
break;
}
return lv;
}
protected void addTab(String tabName, TabHost.TabContentFactory tabFactory){
TabSpec tabSpec = tabHost.newTabSpec(tabName);
tabSpec.setIndicator(tabName); // Don't set tab layout since we are going to make it invisible
tabSpec.setContent(tabFactory);
tabHost.addTab(tabSpec);
addButton(tabName);
}
protected void addButton(String tabName){
Button button = (Button) buttonHolder.getChildAt(nextChild);
button.setText(tabName);
button.setVisibility(View.VISIBLE);
button.setOnClickListener(buttonListener);
nextChild--;
}
private OnClickListener buttonListener = new OnClickListener(){
@Override
public void onClick(View v) {
v.setBackgroundResource(R.drawable.tab_selected);
tabHost.setCurrentTab(Integer.parseInt((String) v.getTag()));
Log.d("TabbedScreen","Set tab to " + v.getTag());
View view;
for (int i=0; i< childCount; i++)
if ((view = buttonHolder.getChildAt(i)) != v){
view.setBackgroundResource(R.drawable.button_tab);
view.invalidate();
}
}
};
}
XML:
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:roundedListView="http://schemas.android.com/apk/res/com.applicat.meuchedet"
android:id="@android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_below="@id/content_screen_user_details">
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<FrameLayout android:layout_width="fill_parent" android:layout_height="wrap_content">
<TabWidget android:id="@android:id/tabs" android:layout_width="fill_parent"
android:layout_height="wrap_content" android:visibility="gone"/>
<LinearLayout android:id="@+id/tabButtons" android:layout_width="wrap_content" android:layout_height="20dip">
<Button android:layout_height="wrap_content" android:layout_width="0dip"
android:layout_weight="1.0" android:id="@+id/button3"
android:background="@drawable/button_tab" android:visibility="invisible"
android:tag="3"/>
<Button android:layout_height="wrap_content" android:layout_width="0dip"
android:layout_weight="1.0" android:id="@+id/button2"
android:background="@drawable/button_tab" android:visibility="invisible"
android:tag="2"/>
<Button android:layout_height="wrap_content" android:layout_width="0dip"
android:layout_weight="1.0" android:id="@+id/button1"
android:background="@drawable/button_tab" android:visibility="invisible"
android:tag="1"/>
<Button android:layout_height="wrap_content" android:layout_width="0dip"
android:layout_weight="1.0" android:id="@+id/button0"
android:background="@drawable/tab_selected" android:visibility="invisible"
android:tag="0"/>
</LinearLayout>
</FrameLayout>
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<com.applicat.meuchedet.views.RoundedListView
android:id="@+id/list_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="2dip"
android:paddingRight="2dip"
android:dividerHeight="1dip"
android:footerDividersEnabled="true"
android:listSelector="@drawable/listview_selected_item_background"
android:fadingEdge="none"
android:cacheColorHint = "#00000000"
roundedListView:radius="20"
roundedListView:border="2"
/>
</FrameLayout>
</LinearLayout>
</TabHost>
Edit:
I was wondering if the problem is in the row:
ListView lv = (ListView) findViewById(R.id.list_view);
Am I getting back the same object each time?
If so, how do I get a new one each time based on the one defined in the FrameLayout.
How can you be sure that the value assigned to button in your xml is the same you get with only nextChild– .
not so good solution, you can test it.
but It’s better to set it to the same as you always get with buttonHolder.getChildAt()
modified:
}