Android 蓝牙开发 ( 二 开启蓝牙 周边设备列表)

Android 蓝牙开发 周边设备列表 实现步骤

1. 创建 展示list单个列表的item

<?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="44dp"
    android:gravity="center_vertical"
    android:orientation="horizontal">

    <TextView
        android:id="@+id/text_title"
        android:textSize="18sp"
        android:text="你好"
        android:paddingLeft="8dp"
        android:paddingRight="8dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

</LinearLayout>

2. 创建 listview 的xml 文件

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_gravity="center">

    <ListView
        android:id="@+id/home_list_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />


</androidx.constraintlayout.widget.ConstraintLayout>

3. 挂着listview

View myview = inflater.inflate(R.layout.fragment_home, container, false);
        listView = myview.findViewById(R.id.home_list_view);
        listView.setOnItemClickListener(this);
        listView.setAdapter(homeListAdapter);
        return myview;

4. 加载item

  @SuppressLint("MissingPermission")
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        HanderView handerView;
        if (convertView == null) {
            convertView = LayoutInflater.from(mContext).inflate(R.layout.home_device_layout, parent, false);
            TextView textView = convertView.findViewById(R.id.text_title);
            handerView = new HanderView();
            handerView.textView = textView;
            convertView.setTag(handerView);
        }else {
            handerView = (HanderView) convertView.getTag();
        }
        BluetoothDevice device = peripheralList.get(position);
        handerView.textView.setText(device.getName());
        return convertView;
    }

    private class HanderView {
        TextView textView;
    }

5. 更新数据刷新

  public void  setPeripheralList(List<BluetoothDevice> peripheralList) {
        this.peripheralList = peripheralList;
        notifyDataSetChanged();
    }

效果:

img_v2_1819dd56-b61b-4ce8-8b3d-e806d39e84eg.jpg