Android中RecyclerView拖拽、侧删功能的实现代码

2023-05-30 21:09

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废话不多说，下面展示一下效果。

Android中RecyclerView拖拽、侧删功能的实现代码

这是GridView主文件实现。

public class GridViewActivity extends AppCompatActivity {  RecyclerView mRecyclerView;  List<String> 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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android 拖拽删除 recycle

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