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10
第2章 游戏开发基础知识/Sample2_10/src/com/bn/pp10/Constant.java
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10
第2章 游戏开发基础知识/Sample2_10/src/com/bn/pp10/Constant.java
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package com.bn.pp10;
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//用于管理公共常量的常量类
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public class Constant {
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// 由Service中的Handler发送的消息类型
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public static final int MSG_READ = 2;
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public static final int MSG_DEVICE_NAME = 4;
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// 从Service中的Handler发来的主键名
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public static final String DEVICE_NAME = "device_name";
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}
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package com.bn.pp10;
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import java.util.Set;
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import android.app.Activity;
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import android.bluetooth.BluetoothAdapter;
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import android.bluetooth.BluetoothDevice;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.os.Bundle;
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import android.view.View;
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import android.view.Window;
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import android.view.View.OnClickListener;
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import android.widget.AdapterView;
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import android.widget.ArrayAdapter;
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import android.widget.Button;
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import android.widget.ListView;
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import android.widget.TextView;
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import android.widget.AdapterView.OnItemClickListener;
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/**
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* 设备列表的Activity
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*/
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public class MyDeviceListActivity extends Activity {
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// extra信息名称
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public static String EXTRA_DEVICE_ADDR = "device_address";
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// 成员变量
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private BluetoothAdapter myBtAdapter;
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private ArrayAdapter<String> myAdapterPaired;
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private ArrayAdapter<String> myAdapterNew;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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// 设置窗口
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requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
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setContentView(R.layout.device_list);
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// 设置为当结果是Activity.RESULT_CANCELED时，返回到该Activity的调用者
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setResult(Activity.RESULT_CANCELED);
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// 初始化搜索按钮
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Button scanBtn = (Button) findViewById(R.id.button_scan);
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scanBtn.setOnClickListener(new OnClickListener() {
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public void onClick(View v) {
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doDiscovery();
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v.setVisibility(View.GONE);// 使按钮不可见
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}
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});
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// 初始化适配器
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myAdapterPaired = new ArrayAdapter<String>(this,
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R.layout.device_name);// 已配对的
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myAdapterNew = new ArrayAdapter<String>(this,
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R.layout.device_name);// 新发现的
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// 将已配对的设备放入列表中
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ListView lvPaired = (ListView) findViewById(R.id.paired_devices);
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lvPaired.setAdapter(myAdapterPaired);
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lvPaired.setOnItemClickListener(mDeviceClickListener);
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// 将新发现的设备放入列表中
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ListView lvNewDevices = (ListView) findViewById(R.id.new_devices);
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lvNewDevices.setAdapter(myAdapterNew);
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lvNewDevices.setOnItemClickListener(mDeviceClickListener);
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// 注册发现设备时的广播
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IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
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this.registerReceiver(mReceiver, filter);
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// 注册搜索完成时的广播
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filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
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this.registerReceiver(mReceiver, filter);
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// 获取本地蓝牙适配器
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myBtAdapter = BluetoothAdapter.getDefaultAdapter();
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// 获取已配对的设备
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Set<BluetoothDevice> pairedDevices = myBtAdapter.getBondedDevices();
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// 将所有已配对设备信息放入列表中
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if (pairedDevices.size() > 0) {
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findViewById(R.id.title_paired_devices).setVisibility(View.VISIBLE);
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for (BluetoothDevice device : pairedDevices) {
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myAdapterPaired.add(device.getName() + "\n"
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+ device.getAddress());
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}
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} else {
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String noDevices = getResources().getText(R.string.none_paired)
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.toString();
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myAdapterPaired.add(noDevices);
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}
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}
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@Override
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protected void onDestroy() {
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super.onDestroy();
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if (myBtAdapter != null) {// 确保不再搜索设备
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myBtAdapter.cancelDiscovery();
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}
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// 取消广播监听器
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this.unregisterReceiver(mReceiver);
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}
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// 使用蓝牙适配器搜索设备的方法
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private void doDiscovery() {
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// 在标题上显示正在搜索的标志
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setProgressBarIndeterminateVisibility(true);
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setTitle(R.string.scanning);
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// 显示搜索到的新设备的副标题
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findViewById(R.id.title_new_devices).setVisibility(View.VISIBLE);
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if (myBtAdapter.isDiscovering()) {// 如果正在搜索，取消本次搜索
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myBtAdapter.cancelDiscovery();
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}
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myBtAdapter.startDiscovery();// 开始搜索
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}
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// 列表中设备按下时的监听器
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private OnItemClickListener mDeviceClickListener = new OnItemClickListener() {
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public void onItemClick(AdapterView<?> av, View v, int arg2, long arg3) {
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myBtAdapter.cancelDiscovery();// 取消搜索
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// 获取设备的MAC地址
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String msg = ((TextView) v).getText().toString();
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String address = msg.substring(msg.length() - 17);
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// 创建带有MAC地址的Intent
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Intent intent = new Intent();
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intent.putExtra(EXTRA_DEVICE_ADDR, address);
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// 设备结果并退出Activity
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setResult(Activity.RESULT_OK, intent);
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finish();
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}
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};
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// 监听搜索到的设备的BroadcastReceiver
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private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
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@Override
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public void onReceive(Context context, Intent intent) {
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String action = intent.getAction();
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// 如果找到设备
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if (BluetoothDevice.ACTION_FOUND.equals(action)) {
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// 从Intent中获取BluetoothDevice对象
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BluetoothDevice device = intent
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.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
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// 如果没有配对，将设备加入新设备列表
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if (device.getBondState() != BluetoothDevice.BOND_BONDED) {
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myAdapterNew.add(device.getName() + "\n"
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+ device.getAddress());
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}
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// 当搜索完成后，改变Activity的标题
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} else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED
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.equals(action)) {
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setProgressBarIndeterminateVisibility(false);
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setTitle(R.string.select_device);
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if (myAdapterNew.getCount() == 0) {
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String noDevices = getResources().getText(
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R.string.none_found).toString();
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myAdapterNew.add(noDevices);
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}
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}
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}
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};
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}
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243
第2章 游戏开发基础知识/Sample2_10/src/com/bn/pp10/MyService.java
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243
第2章 游戏开发基础知识/Sample2_10/src/com/bn/pp10/MyService.java
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@@ -0,0 +1,243 @@
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package com.bn.pp10;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.util.UUID;
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import android.bluetooth.BluetoothAdapter;
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import android.bluetooth.BluetoothDevice;
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import android.bluetooth.BluetoothServerSocket;
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import android.bluetooth.BluetoothSocket;
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import android.content.Context;
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import android.os.Bundle;
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import android.os.Handler;
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import android.os.Message;
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//用于管理连接的Service
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public class MyService {
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// 本应用的唯一 UUID
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private static final UUID MY_UUID = UUID.fromString("fa87c0d0-afac-11de-8a39-0800200c9a66");
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// 成员变量
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private final BluetoothAdapter btAdapter;
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private final Handler myHandler;
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private AcceptThread myAcceptThread;
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private ConnectThread myConnectThread;
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private ConnectedThread myConnectedThread;
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private int myState;
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// 表示当前连接状态的常量
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public static final int STATE_NONE = 0; // 什么也没做
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public static final int STATE_LISTEN = 1; // 正在监听连接
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public static final int STATE_CONNECTING = 2; // 正在连接
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public static final int STATE_CONNECTED = 3; // 已连接到设备
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// 构造器
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public MyService(Context context, Handler handler) {
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btAdapter = BluetoothAdapter.getDefaultAdapter();
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myState = STATE_NONE;
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myHandler = handler;
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}
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//设置当前连接状态的方法
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private synchronized void setState(int state) {
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myState = state;
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}
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//获取当前连接状态的方法
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public synchronized int getState() {
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return myState;
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}
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//开启service的方法
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public synchronized void start() {
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// 关闭不必要的线程
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if (myConnectThread != null) {myConnectThread.cancel(); myConnectThread = null;}
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if (myConnectedThread != null) {myConnectedThread.cancel(); myConnectedThread = null;}
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if (myAcceptThread == null) {// 开启线程监听连接
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myAcceptThread = new AcceptThread();
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myAcceptThread.start();
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}
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setState(STATE_LISTEN);
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}
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//连接设备的方法
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public synchronized void connect(BluetoothDevice device) {
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// 关闭不必要的线程
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if (myState == STATE_CONNECTING) {
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if (myConnectThread != null) {myConnectThread.cancel(); myConnectThread = null;}
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}
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if (myConnectedThread != null) {myConnectedThread.cancel(); myConnectedThread = null;}
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// 开启线程连接设备
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myConnectThread = new ConnectThread(device);
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myConnectThread.start();
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setState(STATE_CONNECTING);
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}
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//开启管理和已连接的设备间通话的线程的方法
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public synchronized void connected(BluetoothSocket socket, BluetoothDevice device) {
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// 关闭不必要的线程
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if (myConnectThread != null) {myConnectThread.cancel(); myConnectThread = null;}
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if (myConnectedThread != null) {myConnectedThread.cancel(); myConnectedThread = null;}
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if (myAcceptThread != null) {myAcceptThread.cancel(); myAcceptThread = null;}
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// 创建并启动ConnectedThread
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myConnectedThread = new ConnectedThread(socket);
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myConnectedThread.start();
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// 发送已连接的设备名称到主界面Activity
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Message msg = myHandler.obtainMessage(Constant.MSG_DEVICE_NAME);
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Bundle bundle = new Bundle();
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bundle.putString(Constant.DEVICE_NAME, device.getName());
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msg.setData(bundle);
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myHandler.sendMessage(msg);
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setState(STATE_CONNECTED);
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}
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public synchronized void stop() {//停止所有线程的方法
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if (myConnectThread != null) {myConnectThread.cancel(); myConnectThread = null;}
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if (myConnectedThread != null) {myConnectedThread.cancel(); myConnectedThread = null;}
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if (myAcceptThread != null) {myAcceptThread.cancel(); myAcceptThread = null;}
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setState(STATE_NONE);
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}
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public void write(byte[] out) {//向ConnectedThread写入数据的方法
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ConnectedThread tmpCt;// 创建临时对象引用
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synchronized (this) {// 锁定ConnectedThread
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if (myState != STATE_CONNECTED) return;
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tmpCt = myConnectedThread;
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}
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tmpCt.write(out);// 写入数据
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}
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private class AcceptThread extends Thread {//用于监听连接的线程
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// 本地服务器端ServerSocket
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private final BluetoothServerSocket mmServerSocket;
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public AcceptThread() {
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BluetoothServerSocket tmpSS = null;
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try {// 创建用于监听的服务器端ServerSocket
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tmpSS = btAdapter.listenUsingRfcommWithServiceRecord("BluetoothChat", MY_UUID);
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} catch (IOException e) {
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e.printStackTrace();
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}
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mmServerSocket = tmpSS;
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}
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public void run() {
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setName("AcceptThread");
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BluetoothSocket socket = null;
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while (myState != STATE_CONNECTED) {//如果没有连接到设备
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try {
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socket = mmServerSocket.accept();//获取连接的Sock
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} catch (IOException e) {
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e.printStackTrace();
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break;
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}
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if (socket != null) {// 如果连接成功
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synchronized (MyService.this) {
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switch (myState) {
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case STATE_LISTEN:
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case STATE_CONNECTING:
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// 开启管理连接后数据交流的线程
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connected(socket, socket.getRemoteDevice());
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break;
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case STATE_NONE:
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case STATE_CONNECTED:
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try {// 关闭新Socket
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socket.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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break;
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}
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}
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}
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}
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}
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public void cancel() {
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try {
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mmServerSocket.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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//用于尝试连接其他设备的线程
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private class ConnectThread extends Thread {
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private final BluetoothSocket myBtSocket;
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private final BluetoothDevice mmDevice;
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public ConnectThread(BluetoothDevice device) {
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mmDevice = device;
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BluetoothSocket tmp = null;
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// 通过正在连接的设备获取BluetoothSocket
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try {
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tmp = device.createRfcommSocketToServiceRecord(MY_UUID);
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} catch (IOException e) {
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e.printStackTrace();
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}
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myBtSocket = tmp;
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}
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public void run() {
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setName("ConnectThread");
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btAdapter.cancelDiscovery();// 取消搜索设备
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try {// 连接到BluetoothSocket
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myBtSocket.connect();//尝试连接
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} catch (IOException e) {
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setState(STATE_LISTEN);//连接断开后设置状态为正在监听
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try {// 关闭socket
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myBtSocket.close();
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} catch (IOException e2) {
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e.printStackTrace();
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}
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MyService.this.start();//如果连接不成功，重新开启service
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return;
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}
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synchronized (MyService.this) {// 将ConnectThread线程置空
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myConnectThread = null;
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}
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connected(myBtSocket, mmDevice);// 开启管理连接后数据交流的线程
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}
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public void cancel() {
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try {
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myBtSocket.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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//用于管理连接后数据交流的线程
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private class ConnectedThread extends Thread {
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private final BluetoothSocket myBtSocket;
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private final InputStream mmInStream;
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private final OutputStream myOs;
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public ConnectedThread(BluetoothSocket socket) {
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myBtSocket = socket;
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InputStream tmpIn = null;
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OutputStream tmpOut = null;
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// 获取BluetoothSocket的输入输出流
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try {
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tmpIn = socket.getInputStream();
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tmpOut = socket.getOutputStream();
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} catch (IOException e) {
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e.printStackTrace();
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}
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mmInStream = tmpIn;
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myOs = tmpOut;
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}
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public void run() {
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byte[] buffer = new byte[1024];
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int bytes;
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while (true) {// 一直监听输入流
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try {
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bytes = mmInStream.read(buffer);// 从输入流中读入数据
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//将读入的数据发送到主Activity
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myHandler.obtainMessage(Constant.MSG_READ, bytes, -1, buffer)
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.sendToTarget();
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} catch (IOException e) {
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e.printStackTrace();
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setState(STATE_LISTEN);//连接断开后设置状态为正在监听
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break;
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}
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}
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}
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//向输出流中写入数据的方法
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public void write(byte[] buffer) {
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try {
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myOs.write(buffer);
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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public void cancel() {
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try {
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myBtSocket.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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}
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141
第2章 游戏开发基础知识/Sample2_10/src/com/bn/pp10/Sample2_10_Activity.java
Normal file
141
第2章 游戏开发基础知识/Sample2_10/src/com/bn/pp10/Sample2_10_Activity.java
Normal file
@@ -0,0 +1,141 @@
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package com.bn.pp10;
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import android.app.Activity;
|
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import android.bluetooth.BluetoothAdapter;
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import android.bluetooth.BluetoothDevice;
|
||||
import android.content.Intent;
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||||
import android.os.Bundle;
|
||||
import android.os.Handler;
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import android.os.Message;
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import android.view.Menu;
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||||
import android.view.View;
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import android.view.View.OnClickListener;
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import android.widget.Button;
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||||
import android.widget.EditText;
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||||
import android.widget.TextView;
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||||
import android.widget.Toast;
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||||
/**
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||||
* 用于显示对话的主Activity
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||||
*/
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||||
public class Sample2_10_Activity extends Activity {
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||||
private EditText outEt;// 布局中的控件引用
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||||
private Button sendBtn;
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||||
private String connectedNameStr = null;// 已连接的设备名称
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||||
private StringBuffer outSb;// 发送的字符信息
|
||||
private BluetoothAdapter btAdapter = null;// 本地蓝牙适配器
|
||||
private MyService myService = null;// Service引用
|
||||
@Override
|
||||
public void onCreate(Bundle savedInstanceState) {
|
||||
super.onCreate(savedInstanceState);
|
||||
setContentView(R.layout.main);
|
||||
// 获取本地蓝牙适配器
|
||||
btAdapter = BluetoothAdapter.getDefaultAdapter();
|
||||
}
|
||||
@Override
|
||||
public void onStart() {
|
||||
super.onStart();
|
||||
// 如果蓝牙没有开启，提示开启蓝牙，并退出Activity
|
||||
if (!btAdapter.isEnabled()) {
|
||||
Toast.makeText(this, "请先开启蓝牙！", Toast.LENGTH_LONG).show();
|
||||
finish();
|
||||
} else {// 否则初始化聊天的控件
|
||||
if (myService == null)
|
||||
initChat();
|
||||
}
|
||||
}
|
||||
@Override
|
||||
public synchronized void onResume() {
|
||||
super.onResume();
|
||||
if (myService != null) {// 创建并开启Service
|
||||
// 如果Service为空状态
|
||||
if (myService.getState() == MyService.STATE_NONE) {
|
||||
myService.start();// 开启Service
|
||||
}
|
||||
}
|
||||
}
|
||||
private void initChat() {
|
||||
outEt = (EditText) findViewById(R.id.edit_text_out);// 获取编辑文本框的引用
|
||||
// 获取发送按钮引用，并为其添加监听
|
||||
sendBtn = (Button) findViewById(R.id.button_send);
|
||||
sendBtn.setOnClickListener(new OnClickListener() {
|
||||
public void onClick(View v) {
|
||||
// 获取编辑文本框中的文本内容，并发送消息
|
||||
TextView view = (TextView) findViewById(R.id.edit_text_out);
|
||||
String message = view.getText().toString();
|
||||
sendMessage(message);
|
||||
}
|
||||
});
|
||||
myService = new MyService(this, mHandler);// 创建Service对象
|
||||
// 初始化存储发送消息的StringBuffer
|
||||
outSb = new StringBuffer("");
|
||||
}
|
||||
@Override
|
||||
public void onDestroy() {
|
||||
super.onDestroy();
|
||||
if (myService != null) {// 停止Service
|
||||
myService.stop();
|
||||
}
|
||||
}
|
||||
// 发送消息的方法
|
||||
private void sendMessage(String message) {
|
||||
// 先检查是否已经连接到设备
|
||||
if (myService.getState() != MyService.STATE_CONNECTED) {
|
||||
Toast.makeText(this, R.string.not_connected, Toast.LENGTH_SHORT)
|
||||
.show();
|
||||
return;
|
||||
}
|
||||
if (message.length() > 0) {// 如果消息不为空再发送消息
|
||||
byte[] send = message.getBytes();// 获取发送消息的字节数组，并发送
|
||||
myService.write(send);
|
||||
// 消除StringBuffer和编辑文本框的内容
|
||||
outSb.setLength(0);
|
||||
outEt.setText(outSb);
|
||||
}
|
||||
}
|
||||
// 处理从Service发来的消息的Handler
|
||||
private final Handler mHandler = new Handler() {
|
||||
@Override
|
||||
public void handleMessage(Message msg) {
|
||||
switch (msg.what) {
|
||||
case Constant.MSG_READ:
|
||||
byte[] readBuf = (byte[]) msg.obj;
|
||||
// 创建要发送的信息的字符串
|
||||
String readMessage = new String(readBuf, 0, msg.arg1);
|
||||
Toast.makeText(Sample2_10_Activity.this,
|
||||
connectedNameStr + ": " + readMessage,
|
||||
Toast.LENGTH_LONG).show();
|
||||
break;
|
||||
case Constant.MSG_DEVICE_NAME:
|
||||
// 获取已连接的设备名称，并弹出提示信息
|
||||
connectedNameStr = msg.getData().getString(
|
||||
Constant.DEVICE_NAME);
|
||||
Toast.makeText(getApplicationContext(),
|
||||
"已连接到 " + connectedNameStr, Toast.LENGTH_SHORT)
|
||||
.show();
|
||||
break;
|
||||
}
|
||||
}
|
||||
};
|
||||
public void onActivityResult(int requestCode, int resultCode, Intent data) {
|
||||
switch (requestCode) {
|
||||
case 1:
|
||||
// 如果设备列表Activity返回一个连接的设备
|
||||
if (resultCode == Activity.RESULT_OK) {
|
||||
// 获取设备的MAC地址
|
||||
String address = data.getExtras().getString(
|
||||
MyDeviceListActivity.EXTRA_DEVICE_ADDR);
|
||||
// 获取BLuetoothDevice对象
|
||||
BluetoothDevice device = btAdapter
|
||||
.getRemoteDevice(address);
|
||||
myService.connect(device);// 连接该设备
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
@Override
|
||||
public boolean onPrepareOptionsMenu(Menu menu) {
|
||||
// 启动设备列表Activity搜索设备
|
||||
Intent serverIntent = new Intent(this, MyDeviceListActivity.class);
|
||||
startActivityForResult(serverIntent, 1);
|
||||
return true;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user