Android BluetoothAdapter 使用(二)-编程知识

Android BluetoothAdapter 使用(二)

本篇文章主要讲下蓝牙设备的配对.

1: 蓝牙设备列表展示

下面是蓝牙设备adapter的代码:

package com.test.bluetooth;import android.bluetooth.BluetoothDevice;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;import java.util.List;/*** @Author: zh* @Time: 23-12-12.* @Email: * @Describe:*/
public class DeviceAdapter extends BaseAdapter {private Context context;private List<BluetoothDevice> list;public DeviceAdapter(Context context, List<BluetoothDevice> list) {this.context = context;this.list = list;}@Overridepublic int getCount() {return list.size();}@Overridepublic Object getItem(int position) {return list.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {if (convertView == null) {convertView = LayoutInflater.from(context).inflate(R.layout.item_device, parent, false);}BluetoothDevice bluetoothDevice = list.get(position);TextView name = convertView.findViewById(R.id.item_name);TextView address = convertView.findViewById(R.id.item_address);name.setText(bluetoothDevice.getName());address.setText(bluetoothDevice.getAddress());View viewById = convertView.findViewById(R.id.item_btn);viewById.setOnClickListener(v -> {if (deviceConnect != null)deviceConnect.doAction(bluetoothDevice);});return convertView;}DeviceConnect deviceConnect;public void setDeviceConnect(DeviceConnect deviceConnect) {this.deviceConnect = deviceConnect;}public interface DeviceConnect {void doAction(BluetoothDevice bluetoothDevice);}}

item布局如下:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="15dp"android:layout_marginTop="15dp"android:id="@+id/item_name"android:text="xxxxx"android:textSize="20sp"/><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:id="@+id/item_address"android:layout_marginTop="5dp"android:layout_marginLeft="15dp"android:textSize="16sp"/><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:textSize="16sp"android:text="配对"android:layout_marginTop="5dp"android:layout_marginLeft="15dp"android:id="@+id/item_btn"/><Viewandroid:layout_width="match_parent"android:layout_height="1dp"android:layout_marginTop="15dp"android:background="#333"/>
</LinearLayout>

另外由于嵌套使用listview. 这里简单自定义了listview,重新计算了高度.

package com.test.bluetooth;import android.content.Context;
import android.util.AttributeSet;
import android.widget.ListView;public class MyListView extends ListView {public MyListView(Context context, AttributeSet attrs) {super(context, attrs);}@Overridepublic void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {int mExpandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);super.onMeasure(widthMeasureSpec, mExpandSpec);}
}

扫描蓝牙设备列表的代码,可以看下我的上篇文章,这里简单写下:

private final BroadcastReceiver receiver = new BroadcastReceiver() {public void onReceive(Context context, Intent intent) {String action = intent.getAction();if (BluetoothDevice.ACTION_FOUND.equals(action)) {// Discovery has found a device. Get the BluetoothDevice// object and its info from the Intent.BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);String deviceName = device.getName();String deviceHardwareAddress = device.getAddress(); // MAC addressif (!TextUtils.isEmpty(deviceName)){listFind.add(device);findAdapter.notifyDataSetChanged();}Log.d(TAG, "onReceive: deviceName:" + deviceName + "; deviceHardwareAddress:" + deviceHardwareAddress);}}
};

findAdapter.setDeviceConnect(new DeviceAdapter.DeviceConnect() {@Overridepublic void doAction(BluetoothDevice bluetoothDevice) {bindDevice(bluetoothDevice.getAddress());}
});

配对设备的代码如下:

private void bindDevice(String address) {BluetoothDevice remoteDevice = bluetoothAdapter.getRemoteDevice(address);if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {remoteDevice.createBond();}
}