在我的MainActivity顶我所做的:“不幸的是应用程序已经停止,” 由于NetworkOnMainThreadException
private static final int MY_DATA_CHECK_CODE = 0;
public static MainActivity currentActivity;
TextToSpeech mTts;
private String targetURL;
private String urlParameters;
private Button btnClick;
private String clicking = "clicked";
private String[] ipaddresses = new String[]{
private String iptouse = "";
private TextView text;
private boolean connectedtoipsuccess = false;
private int counter = 0;
private NotificationCompat.Builder mbuilder;
private Timer timer = new Timer();
private TextView text1, text2, text3;
private Button startButton;
private Button pauseButton;
private TextView timerValue;
private long startTime = 0L;
private Handler customHandler = new Handler();
long timeSwapBuff = 0L;
private int servercheckCounter = 0;
private byte[] checkServer = null;
private boolean connectedSuccess = false;
随后的onCreate里面我做:在updateTimerThread
startTime = SystemClock.uptimeMillis();
customHandler.postDelayed(updateTimerThread,0);
然后我做:
private Runnable updateTimerThread = new Runnable() {
public void run() {
long updatedTime = 0L;
long timeInMilliseconds = 0L;
timeInMilliseconds = SystemClock.uptimeMillis() - startTime;
updatedTime = timeSwapBuff + timeInMilliseconds;
servercheckCounter +=1 ;
if (servercheckCounter == 10) {
if(connectedSuccess == true) {
checkServer = Get(iptouse + "result");
if (checkServer != null) {
String a = null;
try {
a = new String(checkServer, "UTF-8");
textforthespeacch = a;
MainActivity.currentActivity.initTTS();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
}
servercheckCounter = 0;
}
int secs = (int) (updatedTime/1000);
int mins = secs/60;
secs = secs % 60;
int milliseconds = (int) (updatedTime % 1000);
timerValue.setText("" + mins + ":" + String.format("%02d", secs) + ":" + String.format("%03d", milliseconds) + " counter: " + String.format("%01d",servercheckCounter));
customHandler.postDelayed(this, 100);
}
};
定时器运行无停止,我每秒钟都会发送一个命令给我的Web服务器我的电脑,这是在计时器线程发送命令行:
checkServer = Get(iptouse + "result");
GET方法是:
private byte[] Get(String urlIn) {
URL url = null;
String urlStr = urlIn;
if (urlIn != null)
urlStr=urlIn;
try {
url = new URL(urlStr);
} catch (MalformedURLException e) {
e.printStackTrace();
return null;
}
HttpURLConnection urlConnection = null;
try {
urlConnection = (HttpURLConnection) url.openConnection();
InputStream in = new BufferedInputStream(urlConnection.getInputStream());
byte[] buf=new byte[10*1024];
int szRead = in.read(buf);
byte[] bufOut;
if (szRead==10*1024) {
throw new AndroidRuntimeException("the returned data is bigger than 10*1024.. we don't handle it..");
} else {
bufOut = Arrays.copyOf(buf, szRead);
}
return bufOut;
} catch (IOException e) {
e.printStackTrace();
return null;
} finally {
if (urlConnection!=null)
urlConnection.disconnect();
}
}
我想要做的就是发送每秒的命令在我的电脑上的网络服务器,如果/当网络服务器发生什么事情,它会返回一个值给客户端的Java是客户端。
的问题是,它在做这行后:
checkServer = Get(iptouse + "result");
一次或两次它抛出的Android设备屏幕上的错误。 我试图调试它,但我找不到确切的地方,什么原因以及如何解决问题。
我就行了Get方法增加了一个破发点:
InputStream in = new BufferedInputStream(urlConnection.getInputStream());
这是越来越此行停止在这条线,然后当我提出继续有时停在这条线再次有时抛出的错误有时一次抛出错误。
而且我在更多的地方使用我的程序向网络服务器发送命令,它只在这个地方工作得很好,我试图每秒发送一个命令它正在造成问题。
我想要做的事就是我认为的所谓的池。
也许问题是我每秒发送一个命令,而Get方法由于速度太快而无法处理它?
问题在于它没有停止Get方法中的任何catch位置。
这是从logcat的错误消息:
09-03 17:16:46.476 17224-17224/com.test.webservertest E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.adilipman.webservertest, PID: 17224, android.os.NetworkOnMainThreadException
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1147)
at libcore.io.BlockGuardOs.recvfrom(BlockGuardOs.java:249)
at libcore.io.IoBridge.recvfrom(IoBridge.java:553)
at java.net.PlainSocketImpl.read(PlainSocketImpl.java:485)
at java.net.PlainSocketImpl.access$000(PlainSocketImpl.java:37)
at java.net.PlainSocketImpl$PlainSocketInputStream.read(PlainSocketImpl.java:237)
at com.android.okio.Okio$2.read(Okio.java:113)
at com.android.okio.RealBufferedSource.indexOf(RealBufferedSource.java:147)
at com.android.okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:94)
at com.android.okhttp.internal.http.HttpConnection.readResponse(HttpConnection.java:175)
at com.android.okhttp.internal.http.HttpTransport.readResponseHeaders(HttpTransport.java:101)
at com.android.okhttp.internal.http.HttpEngine.readResponse(HttpEngine.java:616)
at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:379)
at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:323)
at com.android.okhttp.internal.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:190)
at com.adilipman.webservertest.MainActivity.Get(MainActivity.java:582)
at com.adilipman.webservertest.MainActivity.access$700(MainActivity.java:72)
at com.adilipman.webservertest.MainActivity$3.run(MainActivity.java:188)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5274)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:909)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:704)
你的logcat说什么? –
如果我们只能得到错误日志 –
由于您将UI代码与网络代码混合在一起,我假设它是'NetworkOnMainThreadException'。在主线程的'Handler'上运行的'Runnable'仍然在主UI线程上运行。 http://stackoverflow.com/questions/6343166/android-os-networkonmainthreadexception – laalto