AndroidStudio學習之RecyclerView（二）

可參考視訊（有完整的講解）：天哥在奔跑

實作水準滾動功能

與RecyclerView（一）的實作基本一樣

public class HorRecyclerViewActivity extends AppCompatActivity {

    private RecyclerView mRvHor;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_hor_recycler_view);

        mRvHor = findViewById(R.id.rv_hor);
        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(HorRecyclerViewActivity.this);
        linearLayoutManager.setOrientation(RecyclerView.HORIZONTAL);
        mRvHor.setLayoutManager(linearLayoutManager);
        mRvHor.addItemDecoration(new MyDecoration());
        mRvHor.setAdapter(new HorAdapter(HorRecyclerViewActivity.this, new HorAdapter.OnItemClickListener() {
            @Override
            public void OnClick(int pos) {
                Toast.makeText(HorRecyclerViewActivity.this, "click.."+pos,Toast.LENGTH_SHORT).show();
            }
        }));
    }
    
    //分割線
    class MyDecoration extends RecyclerView.ItemDecoration{
        @Override
        public void getItemOffsets(@NonNull Rect outRect, @NonNull View view, @NonNull RecyclerView parent, @NonNull RecyclerView.State state) {
            super.getItemOffsets(outRect, view, parent, state);
            outRect.set(0,0,getResources().getDimensionPixelOffset(R.dimen.DividerHeight),0);
        }
    }
}
           

網格布局

public class GridRecyclerViewActivity extends AppCompatActivity {
    private RecyclerView mRvGrid;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_grid_recycler_view);
        
        mRvGrid = findViewById(R.id.rv_grid);
        mRvGrid.setLayoutManager(new GridLayoutManager(GridRecyclerViewActivity.this,3));
        mRvGrid.setAdapter(new GridAdapter(GridRecyclerViewActivity.this, new GridAdapter.OnItemClickListener() {
            @Override
            public void OnClick(int pos) {
                Toast.makeText(GridRecyclerViewActivity.this,"click..."+pos,Toast.LENGTH_SHORT).show();
            }
        }));
    }
}
           

這些都是差不多的，Adapter是可以用一個的，我這雖然Adapter的名字不一樣，但是裡面的内容是一樣的，隻是我對每一種布局都設定了一個Adapter，這樣是為了友善改布局。