android wifi（WAP/PSK加密）蓝牙设备的连接

（正在上班，待续）

WIFI配置权限

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>

<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>

蓝牙连接的配置权限

<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>

<uses-permission android:name="android.permission.BLUETOOTH"/>

WIFI连接

其实wifi的连接参数可以在文件里面找到（需要手机root），

进入cmd命令提示符，adb shell进入 data/misc/wifi,查看wpa_supplicant.conf这个文件，使用cat  wpa_supplicant.conf这个指令，我们可以看到之前连接的一些信息



一：蓝牙连接聊天

package com.liu.blutoolth;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.UUID;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothServerSocket;
import android.bluetooth.BluetoothSocket;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

@SuppressLint("HandlerLeak")
public class MainActivity extends Activity implements OnClickListener {
private Button searchBtn; // 搜索按钮
private TextView showList; // 蓝牙数据
private BluetoothAdapter ma; // 蓝牙
private IntentFilter mFilter;
private Button serverBtn; // 作为服务器
private Button clientBtn; // 作为客户端
private BluetoothServerSocket sServerSocket = null;
private static BluetoothDevice mDevice; // 客户端要连接的设备
private ServerThread server; // 服务端线程
private ConnectServer connect; // 客户端线程
private static UUID uuid = null; // 双方的UUID
private EditText uuidText; // UUID(后四位)
private BluetoothSocket clientSocket; // 客户端连接端口
private BluetoothSocket serverSocket; // 服务端连接端口
private EditText sendText;
private Button send;
private Handler hand;
private boolean isServer = true;
private OutputStream outClient;
private InputStream inClient;
private final BroadcastReceiver br = new BroadcastReceiver() {

@SuppressLint("NewApi")
@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);

if ("C230t".trim().equals(device.getName())) {	//这里的"C230t"是你想要连接的蓝牙设备的名称，需要手动修改
mDevice = device; // 获取对方设备
ma.cancelDiscovery();
}

StringBuilder sb = new StringBuilder();
sb.append("name:" + device.getName() + " address:"
+ device.getAddress() + "\n");
showList.append(sb);

}
}
};

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);
init();
}

private void init() {
searchBtn = (Button) findViewById(R.id.search);
showList = (TextView) findViewById(R.id.showlist);
serverBtn = (Button) findViewById(R.id.server);
clientBtn = (Button) findViewById(R.id.client);
uuidText = (EditText) findViewById(R.id.uuid);
sendText = (EditText) findViewById(R.id.sent_text);
send = (Button) findViewById(R.id.send);
serverBtn.setOnClickListener(this);
clientBtn.setOnClickListener(this);
mFilter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
registerReceiver(br, mFilter);
hand = new Handler() {
@Override
public void handleMessage(Message msg) {
StringBuilder sb = new StringBuilder();
sb.append((String) msg.obj + "\n");
showList.append(sb);
if (((String) msg.obj).equalsIgnoreCase("wifi")) {
// Intent intent = new Intent();
/*
* intent.setAction("com.liu.wifi.mainactivity");
*
* startActivity(intent);
*/
LayoutInflater inflate = getLayoutInflater();
View view = inflate.inflate(R.layout.wifi_dialog, null);
Builder wifiDialog = new AlertDialog.Builder(
MainActivity.this);
wifiDialog.setTitle("title");
wifiDialog.setView(view);
wifiDialog.setPositiveButton("ok", null);
wifiDialog.setNegativeButton("cancel", null);
wifiDialog.show();

}

}
};
send.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
if (isServer) {
ServerSendMessage();
} else {
ClientSendMessage();
}
}
});
showList.setText("DEVICE");

ma = BluetoothAdapter.getDefaultAdapter();
searchBtn.setOnClickListener(new OnClickListener() { // 搜索按钮

@Override
public void onClick(View v) {
ma.cancelDiscovery();
ma.startDiscovery();

Intent canFind = new Intent(
BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
canFind.putExtra(
BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,
300);
startActivity(canFind);
}
});

if (!ma.isEnabled()) {
Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(intent, 1);

}
}

private OutputStream outServer;

private void ServerSendMessage() {
try {
if (!sendText.getText().toString().trim().equals("")) {
outServer
.write(sendText.getText().toString().trim().getBytes());
}
} catch (IOException e) {
e.printStackTrace();
}
}

protected void ClientSendMessage() {
try {
if (!sendText.getText().toString().trim().equals("")) {
outClient
.write(sendText.getText().toString().trim().getBytes());

}
} catch (IOException e) {
e.printStackTrace();
try {
outClient.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
}

@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.server:
isServer = true;
clientBtn.setVisibility(View.INVISIBLE);
uuid = UUID.fromString("00035201-0000-1000-8000-00805F92"
+ uuidText.getText().toString().trim());
startServer();
break;
case R.id.client:
isServer = false;
serverBtn.setVisibility(View.INVISIBLE);
uuid = UUID.fromString("00035201-0000-1000-8000-00805F92"
+ uuidText.getText().toString().trim());
startConnect();
break;
default:
break;
}
}

private void startConnect() {
if (uuid == null) {

} else {
if (MainActivity.mDevice != null) {
connect = new ConnectServer(mDevice, uuid);
connect.start();

}
}
}

private void startServer() {
if (server == null) {
server = new ServerThread();
server.start();
}
}

private InputStream inServer; // 服务器接收

// 服务端等待线程
private class ServerThread extends Thread {
public ServerThread() {
try {
sServerSocket = ma.listenUsingRfcommWithServiceRecord("bt",
uuid);		//这里的 "bt"是本地设备名，可修改
} catch (IOException e) {
e.printStackTrace();
}
}

@Override
public void run() {
ma.cancelDiscovery();
while (true) {
try {
serverSocket = sServerSocket.accept();
outServer = serverSocket.getOutputStream();
inServer = serverSocket.getInputStream();
if (serverSocket != null) {
sServerSocket.close();
break;
}
} catch (IOException e) {
e.printStackTrace();
try {
if (sServerSocket != null) {
sServerSocket.close();
}
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
}
}

// 客户端连接线程

private class ConnectServer extends Thread {

public ConnectServer(BluetoothDevice device, UUID uuid) {

try {
clientSocket = device.createRfcommSocketToServiceRecord(uuid);

} catch (IOException e) {
e.printStackTrace();
}
}

@Override
public void run() {
ma.cancelDiscovery();
try {
clientSocket.connect();
inClient = clientSocket.getInputStream();
outClient = clientSocket.getOutputStream();
new handClientThread().start();
} catch (IOException e) {
e.printStackTrace();
try {
clientSocket.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
}

@Override
protected void onDestroy() {
super.onDestroy();
unregisterReceiver(br);
}

// 处理客户端发来的数据
private class handClientThread extends Thread {

@Override
public void run() {

byte[] buffer = new byte[1024];
int size = 0;
while (true) {
try {
if (isServer) {

size = inServer.read(buffer);
String str = new String(buffer, 0, size, "UTF-8");

Message msg = new Message();
msg.obj = str;
hand.sendMessage(msg);
} else {
size = inClient.read(buffer);
String str = new String(buffer, 0, size, "UTF-8");

Message msg = new Message();
msg.obj = str;
hand.sendMessage(msg);
}

} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
break;
}

}

}

}
}

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/search"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:text="@string/search" />

<TextView
android:id="@+id/showlist"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/uuid" />

<Button
android:id="@+id/server"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/search"
android:text="@string/server" />

<Button
android:id="@+id/client"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_below="@+id/search"
android:text="@string/client" />

<EditText
android:id="@+id/uuid"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_marginTop="22dp"
android:layout_below="@id/server"
android:hint="@string/uuid"
android:ems="10" >

<requestFocus />

</EditText>

<EditText
android:id="@+id/sent_text"
android:hint="@string/sent_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignLeft="@+id/send" />

<Button
android:id="@+id/send"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"
android:layout_marginLeft="29dp"
android:text="@string/send" />

</RelativeLayout>