Android编程实现控件不同状态文字显示不同颜色的方法

<TextView
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:id="@+id/close_time_display"
   android:layout_marginRight="20dp"
   android:text="@string/default_time"
   style="@style/item_content_text_style"/>

<style name="item_content_text_style">
    <item name="android:textSize">26sp</item>
    <item name="android:duplicateParentState">true</item>
    <item name="android:textColor">@drawable/textcolor_yellow_selector</item>
</style>

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

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:state_pressed="true"
     android:color="#ffff0000"/> <!-- pressed -->
  <item android:state_focused="true"
     android:color="#ff0000ff"/> <!-- focused -->
  <item android:color="#ff000000"/> <!-- default -->
</selector>

Button btn=(Button)findViewById(R.id.btn);
Resources resource=(Resources)getBaseContext().getResources();
ColorStateList csl=(ColorStateList)resource.getColorStateList(R.color.button_text);
if(csl!=null){
   btn.setTextColor(color_state_list);//设置按钮文字颜色
}

XmlResourceParser xpp=Resources.getSystem().getXml(R.color.button_text);
try {
   ColorStateList csl= ColorStateList.createFromXml(getResources(),xpp);
   btn.setTextColor(csl);
} catch (Exception e) {
   // TODO: handle exception
}

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<item
  android:color="hex_color"
  android:state_pressed=["true" | "false"]
  android:state_focused=["true" | "false"]
  android:state_selected=["true" | "false"]
  android:state_active=["true" | "false"]
  android:state_checkable=["true" | "false"]
  android:state_checked=["true" | "false"]
  android:state_enabled=["true" | "false"]
  android:state_window_focused=["true" | "false"] />
</selector>