Android(安卓)Studio 蓝牙配对
16lz
2021-01-26
代码片段
activity
package com.example.day10_2;import android.Manifest;import android.annotation.SuppressLint;import android.bluetooth.BluetoothAdapter;import android.bluetooth.BluetoothDevice;import android.bluetooth.BluetoothManager;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.content.pm.PackageManager;import android.os.Build;import android.os.Parcelable;import android.support.annotation.NonNull;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.util.Log;import android.view.View;import android.widget.AdapterView;import android.widget.Button;import android.widget.ListView;import com.example.day10.R;import java.lang.reflect.InvocationTargetException;import java.lang.reflect.Method;import java.util.ArrayList;import java.util.List;public class Main2Activity extends AppCompatActivity implements View.OnClickListener { List<BluetoothDevice> list; MyAdapter myAdapter; BluetoothAdapter bluetoothAdapter; BluetoothManager bluetoothManager; BluetoothReceiver bluetoothReceiver; Button start, stop, search; ListView lv; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main2); initView(); request(); initDate(); } public void initDate() { bluetoothManager = (BluetoothManager) getSystemService(BLUETOOTH_SERVICE); bluetoothAdapter = bluetoothManager.getAdapter(); if (bluetoothAdapter == null) { finish(); return; } bluetoothReceiver = new BluetoothReceiver(); IntentFilter intentFilter = new IntentFilter(); intentFilter.addAction(BluetoothDevice.ACTION_FOUND); intentFilter.addAction(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE); intentFilter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED); registerReceiver(bluetoothReceiver, intentFilter); } public void initView() { start = findViewById(R.id.start); stop = findViewById(R.id.stop); search = findViewById(R.id.serach); lv = findViewById(R.id.list); list = new ArrayList<>(); start.setOnClickListener(this); stop.setOnClickListener(this); search.setOnClickListener(this); myAdapter = new MyAdapter(list); lv.setAdapter(myAdapter); lv.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { try { Method method = BluetoothDevice.class.getMethod("createBond"); method.invoke(list.get(position)); } catch (Exception e) { e.printStackTrace(); } } }); } public void request() { if (Build.VERSION.SDK_INT > Build.VERSION_CODES.M) { int i = checkSelfPermission(Manifest.permission.BLUETOOTH); int i2 = checkSelfPermission(Manifest.permission.BLUETOOTH_ADMIN); int i3 = checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION); int granted = PackageManager.PERMISSION_GRANTED; if (i != granted || i2 != granted || granted != i3) { String[] permiss = {Manifest.permission.BLUETOOTH, Manifest.permission.BLUETOOTH_ADMIN, Manifest.permission.ACCESS_COARSE_LOCATION}; requestPermissions(permiss, 100); } } } @Override public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) { super.onRequestPermissionsResult(requestCode, permissions, grantResults); if (requestCode == 100) { if (grantResults[0] != PackageManager.PERMISSION_GRANTED) { } } } @Override public void onClick(View v) { switch (v.getId()) { case R.id.start: boolean enable = bluetoothAdapter.enable(); if (!enable) { Intent intent = new Intent(); intent.setAction(BluetoothAdapter.ACTION_REQUEST_ENABLE); intent.setAction(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE); intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 200); } break; case R.id.stop: bluetoothAdapter.disable(); list.clear(); myAdapter.notifyDataSetChanged(); break; case R.id.serach: bluetoothAdapter.startDiscovery(); break; } } public class BluetoothReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); switch (action) { case BluetoothDevice.ACTION_BOND_STATE_CHANGED: BluetoothDevice bluetoothDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); int state = bluetoothDevice.getBondState(); if (state == BluetoothDevice.BOND_BONDED) { Log.e("###", "连接成功"); } break; case BluetoothDevice.ACTION_FOUND: BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); list.add(device); myAdapter.notifyDataSetChanged(); break; case BluetoothAdapter.ACTION_DISCOVERY_FINISHED: myAdapter.notifyDataSetChanged(); break; } } }}ListView适配器
package com.example.day10_2;import android.bluetooth.BluetoothDevice;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.TextView;import com.example.day10.R;import java.util.ArrayList;import java.util.List;class MyAdapter extends BaseAdapter { List<BluetoothDevice> list; public MyAdapter(List<BluetoothDevice> list) { this.list = list; } @Override public int getCount() { return list.size(); } @Override public Object getItem(int position) { return null; } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder viewHolder; if (convertView == null) { viewHolder = new ViewHolder(); convertView = View.inflate(parent.getContext(), R.layout.list, null); viewHolder.name = convertView.findViewById(R.id.name); viewHolder.address = convertView.findViewById(R.id.address); convertView.setTag(viewHolder); } else { viewHolder = (ViewHolder) convertView.getTag(); viewHolder.name.setText(list.get(position).getName()); viewHolder.address.setText(list.get(position).getAddress()); } return convertView; } public class ViewHolder { TextView name; TextView address; }}更多相关文章
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