Android中RecyclerView拖拽、侧删功能的实现代码-创新互联

废话不多说，下面展示一下效果。

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这是GridView主文件实现。

public class GridViewActivity extends AppCompatActivity {
  RecyclerView mRecyclerView;
  List mStringList;
  RecyclerAdapter mRecyAdapter;
  @Override
  protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_recyclerview);
    initView();
    initRecy();
  }
  private void initView() {
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    mRecyclerView = (RecyclerView) findViewById(R.id.view_recycler);
  }
  private void initRecy() {
    if (mStringList == null) {
      mStringList = new ArrayList<>();
    }
    mStringList.addAll(DataManager.getData(20 - mStringList.size()));
    mRecyAdapter = new RecyclerAdapter(R.layout.item_gridview, mStringList, true);
    mRecyclerView.setLayoutManager(new GridLayoutManager(this, 4));
    mRecyclerView.addItemDecoration(new DividerGriItemDecoration(this));
    mRecyclerView.setHasFixedSize(true);
    RecyItemTouchHelperCallback itemTouchHelperCallback = new RecyItemTouchHelperCallback(mRecyAdapter, false, true);
    final ItemTouchHelper itemTouchHelper = new ItemTouchHelper(itemTouchHelperCallback);
    itemTouchHelper.attachToRecyclerView(mRecyclerView);
    mRecyclerView.addOnItemTouchListener(new OnRecyclerItemClickListener(mRecyclerView) {
      @Override
      public void onItemClick(RecyclerView.ViewHolder viewHolder) {
        RecyclerAdapter.ViewHolder viewHolder1 = (RecyclerAdapter.ViewHolder) viewHolder;
        String tvString = viewHolder1.mTextView.getText().toString();
        Toast.makeText(GridViewActivity.this, "碰了一下 " + tvString, Toast.LENGTH_SHORT).show();
      }
      @Override
      public void onLongClick(RecyclerView.ViewHolder viewHolder) {
        RecyclerAdapter.ViewHolder viewHolder1 = (RecyclerAdapter.ViewHolder) viewHolder;
        String tvString = viewHolder1.mTextView.getText().toString();
        Toast.makeText(GridViewActivity.this, "长按不放可以拖动！", Toast.LENGTH_SHORT).show();
        if (viewHolder.getLayoutPosition() != 0) {
          itemTouchHelper.startDrag(viewHolder);
        }
      }
    });
    mRecyclerView.setAdapter(mRecyAdapter);
  }
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    if (item.getItemId() == android.R.id.home) {
      finish();
    }
    return super.onOptionsItemSelected(item);
  }
}

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