实例介绍
【实例简介】
这是一个蓝牙连接通信的demo
【实例截图】
【核心代码】
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 | package com.example.bluetoothconn;import java.util.ArrayList;import java.util.Set;import android.app.Activity;import android.app.AlertDialog;import android.bluetooth.BluetoothAdapter;import android.bluetooth.BluetoothDevice;import android.content.BroadcastReceiver;import android.content.Context;import android.content.DialogInterface;import android.content.Intent;import android.content.IntentFilter;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.Button;import android.widget.ListView;import android.widget.Toast;public class MainActivity extends Activity { static enum ServerOrCilent { NONE, SERVICE, CLIENT }; static String BlueToothAddress = "null"; static ServerOrCilent serviceOrCilent = ServerOrCilent.NONE; static boolean isOpen = false; private ListView mListView; private ArrayList<MyListItem> list; private Button seachButton, serviceButton, open, close; ListAdapter mAdapter; Context mContext; // 取得默认的蓝牙适配器 private BluetoothAdapter mBtAdapter = BluetoothAdapter.getDefaultAdapter(); boolean isBTOpen; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); getActionBar().setTitle("扫描到的设备"); setContentView(R.layout.activity_main); mContext = this; init(); } private void init() { list = new ArrayList<MyListItem>(); mAdapter = new ListAdapter(this, list); mListView = (ListView) findViewById(android.R.id.list); mListView.setAdapter(mAdapter); mListView.setFastScrollEnabled(true); mListView.setOnItemClickListener(mDeviceClickListener); // Register for broadcasts when a device is discovered IntentFilter discoveryFilter = new IntentFilter( BluetoothDevice.ACTION_FOUND); this.registerReceiver(mReceiver, discoveryFilter); // Get a set of currently paired devices Set<BluetoothDevice> pairedDevices = mBtAdapter.getBondedDevices(); // If there are paired devices, add each one to the ArrayAdapter if (pairedDevices.size() > 0) { for (BluetoothDevice device : pairedDevices) { list.add(new MyListItem(device.getName() "\n" device.getAddress(), true)); mAdapter.notifyDataSetChanged(); mListView.setSelection(list.size() - 1); } } else { list.add(new MyListItem("没有设备已经配对", true)); mAdapter.notifyDataSetChanged(); mListView.setSelection(list.size() - 1); } open = (Button) findViewById(R.id.open); open.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub isBTOpen = mBtAdapter.isEnabled(); if (!isBTOpen) { boolean open = mBtAdapter.enable(); if (open) { Toast.makeText(MainActivity.this, "蓝牙已打开", 1000).show(); } else { Toast.makeText(MainActivity.this, "打开蓝牙失败", 1000) .show(); } } else { Toast.makeText(MainActivity.this, "蓝牙已经处于开启状态，不需要再打开了", 1000).show(); } } }); close = (Button) findViewById(R.id.close); close.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub isBTOpen = mBtAdapter.isEnabled(); if (isBTOpen) { boolean close = mBtAdapter.disable(); if (close) { Toast.makeText(MainActivity.this, "蓝牙已关闭", 1000).show(); } else { Toast.makeText(MainActivity.this, "关闭蓝牙失败", 1000) .show(); } } else { Toast.makeText(MainActivity.this, "蓝牙已经处于关闭状态，不需要再关闭了", 1000).show(); } } }); serviceButton = (Button) findViewById(R.id.startService); serviceButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub isBTOpen = mBtAdapter.isEnabled(); if (isBTOpen) { serviceOrCilent = ServerOrCilent.SERVICE; Intent intent = new Intent(); intent.setClass(MainActivity.this, ChatActivity.class); startActivity(intent); } else { Toast.makeText(MainActivity.this, "蓝牙未开启，无法开启服务，请先开启蓝牙再开启服务。", 1000).show(); } } }); seachButton = (Button) findViewById(R.id.startSearch); seachButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub isBTOpen = mBtAdapter.isEnabled(); if (isBTOpen) { if (mBtAdapter.isDiscovering()) { mBtAdapter.cancelDiscovery(); seachButton.setText("重新搜索"); } else { list.clear(); mAdapter.notifyDataSetChanged(); Set<BluetoothDevice> pairedDevices = mBtAdapter .getBondedDevices(); if (pairedDevices.size() > 0) { for (BluetoothDevice device : pairedDevices) { list.add(new MyListItem(device.getName() "\n" device.getAddress(), true)); mAdapter.notifyDataSetChanged(); mListView.setSelection(list.size() - 1); } } else { list.add(new MyListItem( "No devices have been paired", true)); mAdapter.notifyDataSetChanged(); mListView.setSelection(list.size() - 1); } // 开始搜索 mBtAdapter.startDiscovery(); seachButton.setText("停止搜索"); } } else { Toast.makeText(MainActivity.this, "蓝牙处于关闭状态，请开启蓝牙再进行搜索", 1000).show(); } } }); } private OnItemClickListener mDeviceClickListener = new OnItemClickListener() { public void onItemClick(AdapterView<?> av, View v, int arg2, long arg3) { MyListItem item = list.get(arg2); String info = item.message; String address = info.substring(info.length() - 17); BlueToothAddress = address; AlertDialog.Builder StopDialog = new AlertDialog.Builder(mContext); StopDialog.setTitle("连接");// 标题 StopDialog.setMessage(item.message); StopDialog.setPositiveButton("连接", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub isBTOpen = mBtAdapter.isEnabled(); if (isBTOpen) { mBtAdapter.cancelDiscovery(); seachButton.setText("重新搜索"); serviceOrCilent = ServerOrCilent.CLIENT; Intent intent = new Intent(); intent.setClass(MainActivity.this, ChatActivity.class); startActivity(intent); } else { Toast.makeText(MainActivity.this, "蓝牙未打开，无法连接至服务端，请先打开蓝牙再进行连接", 1000) .show(); } } }); StopDialog.setNegativeButton("取消", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { BlueToothAddress = null; } }); StopDialog.show(); } }; private final BroadcastReceiver mReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); // When discovery finds a device if (BluetoothDevice.ACTION_FOUND.equals(action)) { // Get the BluetoothDevice object from the Intent BluetoothDevice device = intent .getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); // If it's already paired, skip it, because it's been listed // already if (device.getBondState() != BluetoothDevice.BOND_BONDED) { list.add(new MyListItem(device.getName() "\n" device.getAddress(), false)); mAdapter.notifyDataSetChanged(); mListView.setSelection(list.size() - 1); } // When discovery is finished, change the Activity title } else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED .equals(action)) { setProgressBarIndeterminateVisibility(false); if (mListView.getCount() == 0) { list.add(new MyListItem("没有发现蓝牙设备", false)); mAdapter.notifyDataSetChanged(); mListView.setSelection(list.size() - 1); } seachButton.setText("重新搜索"); } } }; @Override protected void onDestroy() { super.onDestroy(); // Make sure we're not doing discovery anymore if (mBtAdapter != null) { mBtAdapter.cancelDiscovery(); } // Unregister broadcast listeners }} |
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