Android TV listview及焦点处理

setItemsCanFocus(true)

android:focusable="true

package com.cn21.ecloud.tv.ui.widget;  import android.content.Context; import android.graphics.Canvas; import android.graphics.Rect; import android.graphics.drawable.Drawable; import android.util.AttributeSet; import android.widget.RelativeLayout;  public class SelectedRelativeLayout extends RelativeLayout{   private Drawable mFloatDrawable;   private Rect mTempRect = new Rect();    public SelectedRelativeLayout(Context context) {     this(context, null, 0);   }    public SelectedRelativeLayout(Context context, AttributeSet attrs) {     this(context, attrs, 0);   }    public SelectedRelativeLayout(Context context, AttributeSet attrs, int defStyleAttr) {     super(context, attrs, defStyleAttr);     mFloatDrawable = getResources().getDrawable(R.drawable.item_float_rectangle);   }    @Override   protected void dispatchDraw(Canvas canvas) {     super.dispatchDraw(canvas);     if (hasFocus()) {       if (mFloatDrawable != null) {         final int w = getMeasuredWidth();         final int h = getMeasuredHeight();         mFloatDrawable.getPadding(mTempRect);         mFloatDrawable.setBounds(-mTempRect.left, -mTempRect.top,             w + mTempRect.right, h + mTempRect.bottom);         mFloatDrawable.draw(canvas);       }     }   } }