【发布时间】:2015-08-10 07:11:33
【问题描述】:
大家好,我正在尝试从蓝牙设备中读取一个流,连续流式传输整数,如下所示:
-11
121
123
1234
-11
我使用我在网上找到的一些代码进行了所有处理,但是要进行一些处理,数字需要是整数而不是字符串,parseInt 占用了太多 CPU,我尝试使用缓冲流但无济于事.
这是当前的方法:
void beginListenForData()
{
final Handler handler = new Handler();
final byte delimiter = 10; //This is the ASCII code for a newline character
stopWorker = false;
readBufferPosition = 0;
readBuffer = new byte[1024];
workerThread = new Thread(new Runnable()
{
public void run()
{
while(!Thread.currentThread().isInterrupted() && !stopWorker)
{
try
{
int bytesAvailable = mmInputStream.available();
if(bytesAvailable > 0)
{
byte[] packetBytes = new byte[bytesAvailable];
mmInputStream.read(packetBytes);
for(int i=0;i<bytesAvailable;i++)
{
byte b = packetBytes[i];
if(b == delimiter)
{
byte[] encodedBytes = new byte[readBufferPosition];
System.arraycopy(readBuffer, 0, encodedBytes, 0, encodedBytes.length);
final String data = new String(encodedBytes, "US-ASCII");
readBufferPosition = 0;
handler.post(new Runnable()
{
public void run()
{
myLabel.setText(data);
}
});
}
else
{
readBuffer[readBufferPosition++] = b;
}
}
}
}
catch (IOException ex)
{
stopWorker = true;
}
}
}
});
workerThread.start();
}
如果有区别,数据来自 Arudino,我可以修改它的流式传输方式。
谢谢!
【问题讨论】:
标签: java android bluetooth stream arduino