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android - Using selector to change TextView text color

I'm trying to use a TextView to define the style of a TabWidget on a tabhost.

I just created a selector for bgcolor and works fine, but i want to make a selector for textColor but the text color don't change:

This is my tab_text_selector.xml:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
     <item android:state_selected="true" android:color="@android:color/white" />
    <item android:state_focused="true" android:color="@android:color/white" />
    <item android:state_pressed="true" android:color="@android:color/white" />

</selector>

And this is the code when i'm trying to use on a textView:

TextView txtTab=new TextView(this);
        txtTab.setTextColor(R.drawable.tab_text_selector);
        txtTab.setBackgroundResource(R.drawable.tab_bg_selector);
        txtTab.setGravity(Gravity.CENTER);
        txtTab.setText("Agregar Idea");

I know the text color must be white in any case but it doesn't.

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1) Use tab_text_selector.xml as below and put it into res/color folder:

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_selected="true" android:color="@android:color/white" />
    <item android:state_focused="true" android:color="@android:color/white" />
    <item android:state_pressed="true" android:color="@android:color/white" />
    <item android:color="#504f4f" /> <!-- default case -->
</selector>

And set it to your textview as below..

TextView tv = (TextView) findViewById(R.id.TextView1) ;
tv.setTextColor(context.getResources().getColor(R.color.tab_text_selector));

2) The Second option is If you are using textview in xml rather than using programatically then use tab_text_selector.xml as below :

<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:gravity="center_horizontal"
    android:text="TextView"
    android:textColor="@??drawable/tab_text_sel??ector" />

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