蓝牙接收信息获取
<pre><code class="language-js">//使用说明
/**
*运行环境：有蓝牙硬件的 安卓全设备 任意分辨率
*运行前请保证，需检测软件曾连接过，或处于已连接状态
*
*运行正常进入监听状态后：
*所有收到的数据会写入本地数据库/sdcard/datebase/BlueMessage.db
*
*运行时设备可以处于待机状态，但不可开启高级省电模式
*
*开发者：浩然（Q 2125764918）
*/
//导入Java&Android包
importClass(android.bluetooth.BluetoothSocket)
importClass(android.bluetooth.BluetoothAdapter)
importClass(android.bluetooth.BluetoothDevice)
importClass(android.bluetooth.BluetoothServerSocket)
importClass(android.bluetooth.BluetoothClass)
importClass(android.bluetooth.BluetoothProfile)
// importClass(android.content.BroadcastReceiver)//注释掉否则报错
importClass(java.util.UUID)
importClass(java.io.BufferedReader);
importClass(java.io.IOException);
importClass(java.io.InputStream);
importClass(java.io.InputStreamReader);
importClass(java.io.OutputStream);
importClass(java.io.PrintWriter);
//申请权限
//requestScreenCapture()
//常量池
var REQUEST_ENABLE_BT = 1
//检查设备支持
var bluetoothAdapter = BluetoothAdapter.getDefaultAdapter()
if (bluetoothAdapter == null) {
toastLog("抱歉，您的设备不支持蓝牙")
exit()
}
log("已获取到设备蓝牙适配器：" + bluetoothAdapter)
//检查蓝牙状态
if (bluetoothAdapter.isEnabled()) {
toastLog("蓝牙已开启")
} else {
log("蓝牙未开启，正在打开蓝牙")
var enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
app.startActivity(enableBtIntent, REQUEST_ENABLE_BT);
for (var i = 0; !bluetoothAdapter.isEnabled(); i++) {
sleep(200)
if (i >= 40) {
toastLog("蓝牙超时未连接成功，自动终止程序")
exit()
}
}
toastLog("蓝牙已开启")
}
//连接设备
var devices = bluetoothAdapter.getBondedDevices();
var option = new Array()
if (devices.size() > 0) {
for (var iterator = devices.iterator(); iterator.hasNext();) {
var bluetoothDevice = iterator.next();
option.push("设备：" + bluetoothDevice.getName() + "\n地址：" + bluetoothDevice.getAddress() + "\nuuid：" + bluetoothDevice.getUuids().toString());
}
}
var cho = -1;
for (; cho < 0;) {
cho = dialogs.select("请选择需要连接的蓝牙设备", option)
}
toastLog("正在连接：\n" + option[cho])
var device = devices.toArray()[cho]
try {
var socket = device.createRfcommSocketToServiceRecord(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"))
bluetoothAdapter.cancelDiscovery();
socket.connect()
toast("连接成功")
} catch (e) {
toast("连接异常")
exit()
}
//构建通信通道
var outputStream = socket.getOutputStream(); //获取一个输出流，向服务端发送信息
var printWriter = new PrintWriter(outputStream); //将输出流包装成打印流
var inputStream = socket.getInputStream(); //获取一个输入流，接收服务端的信息
var inputStreamReader = new InputStreamReader(inputStream); //包装成字符流，提高效率
var bufferedReader = new BufferedReader(inputStreamReader); //缓冲区
//开启数据库
let db = sqlite.open("/sdcard/datebase/BluetoothMessage.db", {
version: 1
}, {
onOpen: function(db) {
db.execSQL("CREATE TABLE IF NOT EXISTS ALLMESSAGE(" +
"`id` INTEGER PRIMARY KEY AUTOINCREMENT, " +
"`nr` TEXT" + ")"
);
}
});
threads.start(function() {
var window = floaty.window(
<vertical>
<input id="input" text="请输入要发送的内容" textSize="16sp" focusable="true"/>
<button id="ok" text="确定"/>
</vertical>
);
window.exitOnClose();
toast("长按确定键可调整位置");
window.input.on("key", function(keyCode, event) {
if (event.getAction() == event.ACTION_DOWN && keyCode == keys.back) {
window.disableFocus();
event.consumed = true;
}
});
window.input.on("touch_down", () => {
window.requestFocus();
window.input.requestFocus();
});
window.ok.on("click", () => {
printWriter.print(window.input.text())
toast("已发送：" + window.input.text())
printWriter.flush()
window.input.setText("")
window.disableFocus();
});
window.ok.on("long_click", () => {
window.setAdjustEnabled(!window.isAdjustEnabled());
});
setInterval(() => {}, 1000);
});
//监听写入
while (true) {
try {
var nstr = bufferedReader.readLine();
if (nstr != null) {
toastLog("插入张三: ", db.insert("ALLMESSAGE", {
nr: nstr
}));
}
} catch (e) {
toastLog("蓝牙断开，停止服务")
}
}
/**/
</code></pre>