实例介绍
【实例简介】同时打开两个串口设备
【实例截图】
【实例截图】
【核心代码】
package com.cnd.gesturetest;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import com.aill.androidserialport.SerialPort;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Timer;
import java.util.TimerTask;
import android.content.IntentFilter;
public class MainActivity extends Activity {
private static String TAG = "MainActivity";
private static final char[] HEXES = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
private SerialPort serialPort,serialPort1 = null;
private InputStream inputStream,inputStream1;
private OutputStream outputStream,outputStream1;
private byte[] buffer;
private byte[] buffer1;
private IntentFilter mIntentFilter_code = null;
private DiyBroadcastReceiver diyBroadcastReceiver;
private String result1;
private final Timer timer = new Timer();
private TimerTask task;
Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what){
case 1:
Log.i(TAG, "十秒一次");
sendGasBroadcast(result1);
break;
default:
break;
}
super.handleMessage(msg);
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
try {
setView();
} catch (IOException e) {
e.printStackTrace();
}
if (task != null){
task.cancel(); //将原任务从队列中移除
}
task = new TimerTask() {
@Override
public void run() {
// TODO Auto-generated method stub
Message message = new Message();
message.what = 1;
handler.sendMessage(message);
}
};
timer.schedule(task, 2000, 10000);
diyBroadcastReceiver = new DiyBroadcastReceiver();
mIntentFilter_code = new IntentFilter("com.cnd.usbprovider.gesture.result");
registerReceiver(diyBroadcastReceiver, mIntentFilter_code);
test();
}
private void test() {
Log.i(TAG, "just test:");
}
@Override
protected void onPause() {
super.onPause();
task.cancel();
unregisterReceiver(diyBroadcastReceiver);
}
private void sendGasBroadcast(String code){
Intent intentGas = new Intent("com.cnd.usbprovider.gas.result");
intentGas.putExtra("gas",code);
sendBroadcast(intentGas);
Log.i(TAG, "发送气体广播");
}
private void setView() throws IOException {
Log.i(TAG, "setView: ");
serialPort = new SerialPort(new File("/dev/ttyUSB0"), 9600, 0);
serialPort1 = new SerialPort(new File("/dev/ttyUSB1"), 9600, 0);
new ReadThread("read").start();
new ReadThread1("read1").start();
}
class ReadThread extends Thread {
public ReadThread(String name) {
super(name);
}
@Override
public void run() {
super.run();
int ret = 0;
do{
//Log.i(TAG, "ReadThread: 开始读");
try {
Thread.sleep(500);
inputStream = serialPort.getInputStream();
ret = inputStream.available();
if (ret > 0) {
buffer = new byte[ret];
inputStream.read(buffer);
String result = bytes2Hex(buffer);
Log.i(TAG, "手势:" result);
Intent intentScan = new Intent("com.cnd.usbprovider.gesture.result");
switch (result.substring(2, 4)) {
case "08":
Log.i(TAG, "悬停");
intentScan.putExtra("gesture", "08");
sendBroadcast(intentScan);
break;
case "01":
Log.i(TAG, "从左至右");
intentScan.putExtra("gesture", "01");
sendBroadcast(intentScan);
break;
case "02":
Log.i(TAG, "从右至左");
intentScan.putExtra("gesture", "02");
sendBroadcast(intentScan);
break;
}
}
} catch (Exception e) {
e.printStackTrace();
}
}while (true);
}
}
class ReadThread1 extends Thread {
public ReadThread1(String name) {
super(name);
}
@Override
public void run() {
super.run();
int ret = 0;
do{
//Log.i(TAG, "ReadThread1: 开始读");
try {
Thread.sleep(400);
inputStream1 = serialPort1.getInputStream();
ret = inputStream1.available();
if (ret > 0) {
buffer1 = new byte[ret];
inputStream1.read(buffer1);
result1 = bytes2Hex(buffer1);
Log.i(TAG, "烟雾:" result1);
}
} catch (Exception e) {
e.printStackTrace();
}
}while (true);
}
}
/**
* byte数组 转换成 16进制小写字符串
*/
public static String bytes2Hex(byte[] bytes) {
if (bytes == null || bytes.length == 0) {
return null;
}
StringBuilder hex = new StringBuilder();
for (byte b : bytes) {
hex.append(HEXES[(b >> 4) & 0x0F]);
hex.append(HEXES[b & 0x0F]);
}
return hex.toString();
}
public static int covert(String content){
int number=0;
String [] HighLetter = {"A","B","C","D","E","F"};
Map<String,Integer> map = new HashMap<>();
for(int i = 0;i <= 9;i ){
map.put(i "",i);
}
for(int j= 10;j<HighLetter.length 10;j ){
map.put(HighLetter[j-10],j);
}
String[]str = new String[content.length()];
for(int i = 0; i < str.length; i ){
str[i] = content.substring(i,i 1);
}
for(int i = 0; i < str.length; i ){
number = map.get(str[i])*Math.pow(16,str.length-1-i);
}
return number;
}
}
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