android 如何依赖android:sharedUserId更换皮肤Skin(2)

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       
        textview = (TextView)findViewById(R.id.id_skin_textview);
        textview.setText("皮肤一");
        linearLayout = (LinearLayout)findViewById(R.id.id_skin_linearlayout);
       
        linearLayout.setBackgroundColor(Color.BLUE);
       
        try {
         //获取皮肤共享的数据包
         ctx = this.createPackageContext("com.tal.skin", CONTEXT_IGNORE_SECURITY);②
        } catch (NameNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
  }
   
  bt1 = (Button)findViewById(R.id.id_skin_bt1);
  bt2 = (Button)findViewById(R.id.id_skin_bt2);
  bt3 = (Button)findViewById(R.id.id_skin_bt3);
  bt1.setOnClickListener(new OnClickListener(){
   @Override
   public void onClick(View v) {
    linearLayout.setBackgroundColor(Color.BLUE);
    textview.setText("默认皮肤");
   }});
  bt2.setOnClickListener(new OnClickListener(){
   @Override
   public void onClick(View v) {
    linearLayout.setBackgroundDrawable(ctx.getResources().getDrawable(R.drawable.skin1));  ③
    textview.setText("皮肤一");
   }});
  bt3.setOnClickListener(new OnClickListener(){
   @Override
   public void onClick(View v) {
       linearLayout.setBackgroundDrawable(ctx.getResources().getDrawable(R.drawable.skin2));④
    textview.setText("皮肤二");
   }});
    }
}
 
   注解：②③④获取皮肤工程的数据，当中有指定皮肤的包名

main.xml

 <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:id="@+id/id_skin_linearlayout"
    >
<TextView
    android:id="@+id/id_skin_textview"