Android_CustomListview获取焦点返回上一个被选中条目(电视开发)

public class MemListView extends ListView {
	public MemListView(Context context) {
		super(context);
	}
	
	public MemListView(Context context, AttributeSet attrs) {
		super(context, attrs);
	}
	
	public MemListView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
	}

	@Override
	protected void onFocusChanged(boolean gainFocus, int direction, Rect previouslyFocusedRect) {
		int lastSelectItem = getSelectedItemPosition();
		super.onFocusChanged(gainFocus, direction, previouslyFocusedRect);
		if (gainFocus) {
			setSelection(lastSelectItem);
		}
	}
}

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