Preference 안에 Layout 만들기

1. PreferenceScreen 추가 

2. Preference를 상속해서 클스추가.

3. Preference의 아이템으로 TestActivity 추가 추가. 

preference.xml 

<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
        <com.TestActivity
            android:title="test
            android:key="key_test/>
</PreferenceScreen>

test_activity.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <TextView 
        android:id="@+id/text_test
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:text="test/>

</LinearLayout>

 TestActivity.xml

public class TestActivity extends Preference {

    Context mContext;
    //외부에서 접근.
    static View viewTest;

    TestActivity    {
        this(context, attrs,0);
        this.mContext = context;
    }

    public TestActivity (Context context, AttributeSet attrs, int defStyle)    {
        super(context, attrs, defStyle);
        this.mContext = context;
        setLayoutResource(R.layout.test_activity);
    }


    @Override
    protected void onBindView(View view) {
        super.onBindView(view);
        viewTest = view;
        TextView textTest = (TextView)view.findViewById(R.id.text_test);
   }
}