Change android layout programmatically

I start my application with a layout main.xml like this:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout android:id="@+id/relative" xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent" android:layout_height="fill_parent">
    <ImageButton android:id="@+id/applogo" ... android:src="@drawable/app_logo"/>
    <TabHost android:id="@android:id/tabhost" ... android:layout_below="@+id/applogo">
        <LinearLayout ...>
            <TabWidget.../>
            <FrameLayout android:id="@android:id/tabcontent"...>
            </FrameLayout>
        </LinearLayout>
    </TabHost>
</RelativeLayout>

And the user in the settings menu can choose another layout, smaller (tiny.xml), whose layout is this:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout android:id="@+id/relative" xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent" android:layout_height="fill_parent">
    <TabHost android:id="@android:id/tabhost" ...>
        <LinearLayout ...>
            <TabWidget.../>
            <FrameLayout android:id="@android:id/tabcontent"...>
            </FrameLayout>
        </LinearLayout>
    </TabHost>
</RelativeLayout>

The mainActivity extends TabActivity and in 开发者_开发技巧the onCreate method:

...

if (isTiny())
setContentView(R.layout.tiny);
else
setContentView(R.layout.main);
mTabHost = getTabHost();

TabSpec newsTab = mTabHost.newTabSpec(NewsActivity.static_getTabActivityTag());
newsIntent = new Intent(this, NewsActivity.class);      
newsTab.setContent(newsIntent);
TextView textView = new TextView(this);

textView.setText(getResources().getString(NewsActivity.static_getIndicatorStringID());
textView.setTextSize(size);
textView.setTextColor(color);
textView.setBackgroundDrawable(background);
tab.setIndicator(textView);
mTabHost.addTab(newsTab);

The idea is to write some code in mainActivity#onRestart so if the user changed the layout through the settings panel load the new layout for him. How to achieve it? I tried using setContentView but it just crashes and creating the views for the tabs again but it just do not work, the views are blank.

Updated: added how to create a tab in the Activity.

Update It is possible to do more than once setContentView. My problem was related to the activities in the Intent.

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You can call setContentView at any time it doesn't have to be in onCreate. I would used aSharedPreferences to store which content view the user wants. Hope this helps.

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For fragments layout I do it like this:

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    if (MainActivity.isDarkMode) {
        return inflater.inflate(R.layout.layout_dark, container, false);
    } else {
        return inflater.inflate(R.layout.layout_light, container, false);
    }
}

So you get the idea.