Android 常用类的释放

场景在Activity中使用了RecyclerView自然会用到adapter。
释放：
在Activity 的 onDestroy中写入：

if (mRecyclerView != null) {
    mRecyclerView.setAdapter(null);
    sateRecyclerView = null;
}
if (mAdapter != null) {
    mAdapter.setSateOnclickListener(null);//是自定义click，如果没有就不用写
    sateAdapter = null;
}

GridLayoutManager监听释放：因为GridLayoutManager监听默认是有值的，所以释放的是有最好设置回默认值比较好。

    private GridLayoutManager gridLayoutManager;
    //在需要释放的时候调用
    public void releaseListen() {
        if (gridLayoutManager != null) {
            gridLayoutManager.setSpanSizeLookup(new GridLayoutManager.DefaultSpanSizeLookup());
            gridLayoutManager = null;
        }
        itemOnClickListener = null;
    }

    @Override
    public void onAttachedToRecyclerView(final RecyclerView recyclerView) {
        super.onAttachedToRecyclerView(recyclerView);
        gridLayoutManager = (GridLayoutManager) recyclerView.getLayoutManager();
        if (gridLayoutManager != null) {
            gridLayoutManager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
                @Override
                public int getSpanSize(int position) {

                    return getItemViewType(position) == TYPE_FOOT ? gridLayoutManager.getSpanCount() : 1;
                }
            });
        }

    }

AnimatorSet动画释放

if (animatorSetSate != null) {
    animatorSetSate.removeAllListeners();
    animatorSetSate.cancel();
}

ArrayList等列表的释放：其实是列表中bean造成了泄漏，这样释放的是列表的持有，真正释放需要释放bean。

list.clear();