直截了当-我的应用程序由于某种神秘的原因而在接收InputStream时失去了部分数据(字符串)。我在这里谈论蓝牙连接。大多数时候,我会收到正确的字符串,但有时会缩短一次。这里最奇怪的是,我正在将每个InputStream打印到ScrollView中,并且可以告诉我整个字符串都在里面...不过这里是代码:
@Override
public void run() {
InputStream inputStream;
try {
inputStream = mBTSocket.getInputStream();
while (!bStop) {
byte[] buffer = new byte[256];
int bytes;
if (inputStream.available() > 0) {
bytes = inputStream.read(buffer);
final String strInput = new String(buffer, 0, bytes);;
mTxtReceive.post(new Runnable() {
@Override
public void run() {
mTxtReceive.append(strInput);
int txtLength = mTxtReceive.getEditableText().length();
if (txtLength > mMaxChars) {
mTxtReceive.getEditableText().delete(0, txtLength - mMaxChars);
}
scrollView.post(new Runnable() {
@Override
public void run() {
scrollView.fullScroll(View.FOCUS_DOWN);
}
});
}
});
runOnUiThread(new Runnable() {
@Override
public void run() {
weather = strInput.split(",");
mTxtHumidity.setText(weather[0]);
mTxtTemperatureDHT.setText(weather[1]);
mTxtPressure.setText(weather[2]);
mTxtLux.setText(weather[3]);
mTxtRainMM.setText(weather[4]);
mTxtRainDaily.setText(weather[5]);
mTxtWSKPH.setText(weather[6]);
mTxtWGKPH.setText(weather[7]);
mTxtWSAVG2.setText(weather[8]);
mTxtWGAVG10.setText(weather[9]);
}
});
}
Thread.sleep(500);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
这里的问题是数组
weather
上的null异常,因为根据我的应用程序,我有时会越界访问项目(weather
出现错误的大多数时间是6/7/8)。应用程序在10%的时间内崩溃。背后有什么原因吗?
编辑:有时接收InputStream而不是接收56个字节,我分别得到33和22
最佳答案
在这里找到答案:Android InputStream dropping first two bytes (modified BluetoothChat)
新增中
try {
Thread.sleep(100);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
由于
sleep
方法,仅解决了Android与Arduino之间非动态数据交换的问题。事实证明,即使sleep(50)
在这种情况下也可以工作。出于某种原因,此sleep
短缓冲区永远不会被分割或丢失。如果编码错误,请在投票之前解释。关于java - Android和Arduino之间的蓝牙数据丢失,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/30465263/