android使用BottomShee+RecycleView 实现高德地图拖拽

1. 首先，在布局文件中定义BottomSheet和RecycleView：

<androidx.coordinatorlayout.widget.CoordinatorLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.google.android.material.bottomsheet.BottomSheetBehavior
        android:id="@+id/bottom_sheet"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:behavior_hideable="true"
        app:behavior_peekHeight="0dp"
        app:layout_behavior="@string/bottom_sheet_behavior">

        <LinearLayout
            android:id="@+id/bottom_sheet_content"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@android:color/white"
            android:orientation="vertical">

            <androidx.recyclerview.widget.RecyclerView
                android:id="@+id/recycler_view"
                android:layout_width="match_parent"
                android:layout_height="match_parent" />

        </LinearLayout>

    </com.google.android.material.bottomsheet.BottomSheetBehavior>

</androidx.coordinatorlayout.widget.CoordinatorLayout>

2. 在Activity中，初始化BottomSheetBehavior和RecycleView：

private BottomSheetBehavior bottomSheetBehavior;
private RecyclerView recyclerView;

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

    recyclerView = findViewById(R.id.recycler_view);
    recyclerView.setLayoutManager(new LinearLayoutManager(this));
    recyclerView.setAdapter(new MyAdapter());

    bottomSheetBehavior = BottomSheetBehavior.from(findViewById(R.id.bottom_sheet));
    bottomSheetBehavior.setState(BottomSheetBehavior.STATE_HIDDEN);

    // 设置地图的触摸事件监听器，用于处理拖拽事件
    AMap aMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();
    aMap.setOnMapTouchListener(new AMap.OnMapTouchListener() {
        @Override
        public void onTouch(MotionEvent motionEvent) {
            if (motionEvent.getAction() == MotionEvent.ACTION_MOVE) {
                if (bottomSheetBehavior.getState() == BottomSheetBehavior.STATE_HIDDEN) {
                    bottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
                }
            }
        }
    });
}

3. 在MyAdapter中，实现RecyclerView的内容：

public class MyAdapter extends RecyclerView.Adapter<MyViewHolder> {

    private List<String> data = new ArrayList<>();

    public MyAdapter() {
        for (int i = 0; i < 20; i++) {
            data.add("Item " + i);
        }
    }

    @NonNull
    @Override
    public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_layout, parent, false);
        return new MyViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {
        holder.textView.setText(data.get(position));
    }

    @Override
    public int getItemCount() {
        return data.size();
    }
}

public class MyViewHolder extends RecyclerView.ViewHolder {

    public TextView textView;

    public MyViewHolder(@NonNull View itemView) {
        super(itemView);
        textView = itemView.findViewById(R.id.text_view);
    }
}

4. 在布局文件中定义item_layout.xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="?attr/listPreferredItemHeight"
    android:orientation="vertical"
    android:padding="16dp">

    <TextView
        android:id="@+id/text_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Item"
        android:textSize="16sp"
        android:textStyle="bold" />

</LinearLayout>

5. 运行程序，拖动地图时，BottomSheet会自动展开，显示RecyclerView的内容。