Android 左滑删除代码

您好，以下是 Android 左滑删除的示例代码：

public class MainActivity extends AppCompatActivity {
    private ListView listView;
    private List<String> dataList;
    private MyAdapter adapter;

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

        //初始化数据
        dataList = new ArrayList<>();
        for (int i = 0; i < 20; i++) {
            dataList.add("item " + i);
        }

        listView = findViewById(R.id.list_view);
        adapter = new MyAdapter(dataList);
        listView.setAdapter(adapter);

        //设置ListView滑动监听
        listView.setOnTouchListener(new View.OnTouchListener() {
            private float startX, startY;

            @Override
            public boolean onTouch(View view, MotionEvent motionEvent) {
                switch (motionEvent.getAction()) {
                    case MotionEvent.ACTION_DOWN:
                        startX = motionEvent.getX();
                        startY = motionEvent.getY();
                        break;
                    case MotionEvent.ACTION_MOVE:
                        float endX = motionEvent.getX();
                        float endY = motionEvent.getY();

                        //判断滑动方向
                        if (endX - startX > 50 && Math.abs(endY - startY) < 50) {
                            int position = listView.pointToPosition((int) startX, (int) startY);
                            if (position != AdapterView.INVALID_POSITION) {
                                adapter.deleteItem(position);
                                return true;
                            }
                        }
                        break;
                    default:
                        break;
                }
                return false;
            }
        });
    }

    private class MyAdapter extends BaseAdapter {
        private List<String> dataList;

        MyAdapter(List<String> dataList) {
            this.dataList = dataList;
        }

        @Override
        public int getCount() {
            return dataList.size();
        }

        @Override
        public Object getItem(int i) {
            return dataList.get(i);
        }

        @Override
        public long getItemId(int i) {
            return i;
        }

        @Override
        public View getView(int i, View view, ViewGroup viewGroup) {
            ViewHolder holder;
            if (view == null) {
                view = LayoutInflater.from(MainActivity.this).inflate(R.layout.item_layout, null);
                holder = new ViewHolder();
                holder.textView = view.findViewById(R.id.text_view);
                view.setTag(holder);
            } else {
                holder = (ViewHolder) view.getTag();
            }
            holder.textView.setText(dataList.get(i));
            return view;
        }

        private void deleteItem(int position) {
            dataList.remove(position);
            notifyDataSetChanged();
        }

        private class ViewHolder {
            TextView textView;
        }
    }
}

希望能对您有帮助。