day11蓝牙传输文件

最新推荐文章于 2023-12-29 16:06:27 发布

mars_liurui

最新推荐文章于 2023-12-29 16:06:27 发布

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分类专栏： month03 moth02 文章标签： day11蓝牙传输文件

本文链接：https://blog.youkuaiyun.com/mars_liurui/article/details/96355173

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博客内容涉及使用蓝牙进行文件传输的代码实现，包括权限的动态获取等关键步骤。

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蓝牙传输文件代码

在这里插入图片描述

添加权限
//需要动态获取权限

   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
    <uses-permission android:name="android.permission.CAMERA"></uses-permission>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
    <uses-permission android:name="android.permission.BLUETOOTH"/>

//1界面
public class MainActivity extends AppCompatActivity {
    Button button;
    ListView listView;
    BluetoothManager bluetoothManager;
    BluetoothAdapter bluetoothAdapter;
    ArrayList<BluetoothDevice> arrayList=new ArrayList<>();
    private UUID uuid = UUID.fromString("00001106-0000-1000-8000-00805F9B34FB");
    BAdapter adapter;
    String[] strings=new String[]{
            Manifest.permission.ACCESS_COARSE_LOCATION,
            Manifest.permission.ACCESS_FINE_LOCATION,
            Manifest.permission.BLUETOOTH,
            Manifest.permission.BLUETOOTH_ADMIN,
            Manifest.permission.CAMERA,
            Manifest.permission.WRITE_EXTERNAL_STORAGE
    };
    @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR2)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        button=findViewById(R.id.bt_search);
        listView=findViewById(R.id.lis);

        //判断手机版本号
        if (Build.VERSION.SDK_INT>=23){
            for (int i = 0; i < strings.length; i++) {
                int permission = ActivityCompat.checkSelfPermission(this, strings[i]);
                if (permission== PackageManager.PERMISSION_DENIED){
                    requestPermissions(strings,101);
                    break;
                }
            }
        }

        //蓝牙管理器
        bluetoothManager= (BluetoothManager) getSystemService(BLUETOOTH_SERVICE);
        bluetoothAdapter=bluetoothManager.getAdapter();
        //判断蓝牙是否开启
        if (!bluetoothAdapter.isEnabled()){
            Toast.makeText(this, "蓝牙没有开启,系统将自动为您打开蓝牙", Toast.LENGTH_SHORT).show();
            Intent intent=new Intent();
            intent.setAction(BluetoothAdapter.ACTION_REQUEST_ENABLE);
            intent.setAction(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
            intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,2000);
            startActivity(intent);
        }

        //设置上适配器
        adapter=new BAdapter(arrayList,this);
        adapter.notifyDataSetChanged();
        listView.setAdapter(adapter);

        //点击跳转
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                BluetoothDevice device = arrayList.get(position);
                Intent intent=new Intent(MainActivity.this,Main2Activity.class);
                intent.putExtra("device",device);
                startActivity(intent);
            }
        });

        //附近设备的集合
        arrayList.clear();

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