1.搜索蓝牙权限
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
2.MainActivity.java
package com.example.bluetooth;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
public class MainActivity extends Activity {
private ListView tvBlueName;
private Map<String, String> map;
private List<Map<String,String>> list;
private DeviceAdapter adapter;
private BluetoothAdapter mBluetoothAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tvBlueName = (ListView) findViewById(R.id.textView1);
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
//获取已经绑定的蓝牙设备信息
Set<BluetoothDevice> devices = mBluetoothAdapter.getBondedDevices();
list = new ArrayList<Map<String,String>>();
if(devices.size() > 0){
for(BluetoothDevice bluetoothDevice : devices){
map = new HashMap<String, String>();
map.put("name", bluetoothDevice.getName());
map.put("address", bluetoothDevice.getAddress());
list.add(map);
}
adapter = new DeviceAdapter();
tvBlueName.setAdapter(adapter);
}
// 注册用以接收到已搜索到的蓝牙设备的receiver
IntentFilter mFilter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
registerReceiver(mReceiver, mFilter);
// 注册搜索完时的receiver
mFilter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
registerReceiver(mReceiver, mFilter);
findViewById(R.id.button1).setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
setProgressBarIndeterminateVisibility(true);
setTitle("正在扫描....");
// 如果正在搜索，就先取消搜索
if (mBluetoothAdapter.isDiscovering()) {
mBluetoothAdapter.cancelDiscovery();
}
// 开始搜索蓝牙设备,搜索到的蓝牙设备通过广播返回
mBluetoothAdapter.startDiscovery();
}
});
}
private BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if(action.equals(BluetoothDevice.ACTION_FOUND)){
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
//获取未绑定的蓝牙设备
if(device.getBondState() != BluetoothDevice.BOND_BONDED){
map = new HashMap<String, String>();
map.put("name", device.getName());
map.put("address", device.getAddress());
list.add(map);
}
adapter.notifyDataSetChanged();
}else if (action.equals(BluetoothAdapter.ACTION_DISCOVERY_FINISHED)) {
setProgressBarIndeterminateVisibility(false);
setTitle("搜索蓝牙设备");
}
}
};
class DeviceAdapter extends BaseAdapter{
@Override
public int getCount() {
return list.size();
}
@Override
public Object getItem(int arg0) {
return list.get(arg0);
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = getLayoutInflater().inflate(R.layout.item,null);
TextView tv1 = (TextView) v.findViewById(R.id.name);
TextView tv2 = (TextView) v.findViewById(R.id.address);
tv1.setText(list.get(position).get("name"));
tv2.setText(list.get(position).get("address"));
return v;
}
}
}
3.activity_main.xml
<RelativeLayout 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" >
<Button
android:id="@+id/button1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:text="搜索" />
<ListView
android:id="@+id/textView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignRight="@+id/button1"
android:layout_below="@+id/button1"
android:layout_marginTop="10dp" />
</RelativeLayout>
