LayoutManager的布局結(jié)構(gòu)和使用方法
LayoutManager是RecyclerView的重要組成部分，它負(fù)責(zé)RecyclerView中子視圖的布局排列。合理選擇并配置LayoutManager，可以實(shí)現(xiàn)各種豐富多樣的 RecyclerView 布局效果。
RecyclerView的布局結(jié)構(gòu)主要由LayoutManager來決定。最常用的LayoutManager類型包括： ??????? ????? ??? ??? ? ??? ??? ???? ???? ?????.Unavailable???.
RecyclerView LayoutManager? ?? ??
layoutManager? ???? ??? ??? ????.
1. LinearLayoutManager
LinearLayoutManager? RecyclerView? ??? ?? ?? ?? ??? ?? ?? ??? ? ??? ????.
RecyclerView recyclerView = findViewById(R.id.MyRecyclerView);
LinearLayoutManager layoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
2. GridLayoutManager
GridLayoutManager? ???? ??? ??? ????? ??? ? ????.
GridLayoutManager layoutManager = new GridLayoutManager(this, 2);
recyclerView.setLayoutManager(layoutManager);
3. StaggeredGridLayoutManager
StaggeredGridLayoutManager? ???? staggered grid (???) ??? ????? ??? ? ????.
StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(2,
StaggeredGridLayoutManager.VERTICAL);
recyclerView.setLayoutManager(layoutLayoutManager);
4. Custom LayoutManager
??? ?? ?? Custom LayoutManager? ???? ??? ?? ????.
public class MyCustomLayoutManager extends RecyclerView.LayoutManager {
// ??? ????邏輯? ?????.
}
layoutManager? ??? ??? RecyclerView? Adapter? ???? ???? ??? ? ????.
layoutManager? ??? ??? ?? RecyclerView? ????效果? ?? ???? ??? ? ????.
layoutManager? ??RecyclerView? ???? ????? ????? ??? ? ????.
layoutManager? ??RecyclerView? ???? ????? ????? ??? ? ????.