Android TV開發-Leanback

Leanback TV開發神器 如下面兩個展開來分享：

1. Leanback 使用
2. Leanback 分析瞭解

1. Leanback 使用

@Override
public void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) {
    int itemCount = getItemCount();
    if (itemCount == 0) {
        removeAndRecycleAllViews(recycler);
        return;
    }
    detachAndScrapAttachedViews(recycler);
    for (int position = 0; position < itemCount; position++) {
        View childView = recycler.getViewForPosition(position);
        addView(childView);
        measureChildWithMargins(childView, 0, 0);
        int widthSpace = getWidth() - getDecoratedMeasuredWidth(childView);
        int heightSpace = getHeight() - getDecoratedMeasuredHeight(childView);
        int padding = position * getDecoratedMeasuredWidth(childView)/2;
        layoutDecoratedWithMargins(childView, widthSpace / 2 + padding, heightSpace / 2,
        widthSpace / 2 + getDecoratedMeasuredWidth(childView) + padding,
        heightSpace / 2 + getDecoratedMeasuredHeight(childView));
    }
}
複製代碼

2. Leanback 分析瞭解