android做一个打开和关闭蓝牙的动作

淡淡的烟草味﹌ 2024-03-31 08:37 58阅读 0赞

直接示例ba,安卓SDK内置有蓝牙适配器,可以直接调用的，我是用三星s10,Android12手机安装的,完全可以,做了个打开和关闭的点击事件。  
1.清单文件里要注册一些蓝牙权限

<uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
        <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
        <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
        <uses-permission android:name="android.permission.BLUETOOTH" />
    
        <uses-permission android:name="android.permission.BLUETOOTH_ADVERTISE" />
        <uses-permission android:name="BLUETOOTH_CONNECT" />
    
        
        <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
        <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
        <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />

xml页面:

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".bluetooth.BluetoothFragment"
        android:orientation="horizontal">
    
        
        <TextView
            android:layout_weight="1"
            android:id="@+id/tv_open"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:textSize="30sp"
            android:text="开启蓝牙" />
    
        <TextView
            android:layout_weight="1"
            android:id="@+id/tv_close"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:text="关闭蓝牙"
            android:textSize="30sp"/>
    
    </LinearLayout>

java代码里:

public class BluetoothFragment extends Fragment {
        //声明绑定对象
        FragmentBluetoothBinding binding;
        //1.全局静态常量定义
        public static final int REQUEST_ENABLE_BT = 1;
        //2.全局变量中定义蓝牙,拿到适配器
        BluetoothAdapter mBluetoothAdapter;
        private List<String> mPermissionList = new ArrayList<>();
    
        public BluetoothFragment() {
            // Required empty public constructor
        }
    
        /**
         * Use this factory method to create a new instance of
         * this fragment using the provided parameters.
         *
         * @param param1 Parameter 1.
         * @param param2 Parameter 2.
         * @return A new instance of fragment BluetoothFragment.
         */
        // TODO: Rename and change types and number of parameters
        public static BluetoothFragment newInstance(String param1, String param2) {
            BluetoothFragment fragment = new BluetoothFragment();
            return fragment;
        }
    
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            if (getArguments() != null) {
            }
        }
    
        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            /**
             * 使用binding视图绑定功能
             * 通过视图绑定功能,可以更轻松地编写可与视图交互的代码。在模块中启动视图绑定之后,
             * 系统会为该模块中的每个xml布局文件生成一个绑定类。
             * 绑定类的实例包含在相应布局中具有ID的所有视图的直接引用
             */
            binding = FragmentBluetoothBinding.inflate(inflater, container, false);
            View view = binding.getRoot();
            //todo 3.初始化蓝牙
            mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
            initPermission();
    
            openBluetooth();
            closeBluetooth();
            return view;
        }
    
        //打开蓝牙
        void openBluetooth() {
            binding.tvOpen.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    Toast.makeText(getActivity(),"打开蓝牙了，小7",Toast.LENGTH_LONG).show();
                    mBluetoothAdapter.enable();
                }
            });
        }
    
        //关闭蓝牙
        void closeBluetooth() {
            binding.tvClose.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    Toast.makeText(getActivity(),"小飞新关闭蓝牙了",Toast.LENGTH_LONG).show();
                    mBluetoothAdapter.disable();
                }
            });
        }
    
        // todo 蓝牙动态申请权限
        private void initPermission(){
            if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.S){
                // Android 版本大于等于 Android12 时
                // 只包括蓝牙这部分的权限，其余的需要什么权限自己添加
                mPermissionList.add(Manifest.permission.BLUETOOTH_SCAN);
                mPermissionList.add(Manifest.permission.BLUETOOTH_ADVERTISE);
                mPermissionList.add(Manifest.permission.BLUETOOTH_CONNECT);
            } else {
                // Android 版本小于 Android12 及以下版本
                mPermissionList.add(Manifest.permission.ACCESS_COARSE_LOCATION);
                mPermissionList.add(Manifest.permission.ACCESS_FINE_LOCATION);
            }
    
            if(mPermissionList.size() > 0){
                ActivityCompat.requestPermissions(getActivity(),mPermissionList.toArray(new String[0]),1001);
            }
        }
    
    
    }

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