我想从Service插入到PHP。但是我有这样的错误:
Unable to start service skripsi.ubm.studenttracking.altitudeSurvey@366d624d with Intent { flg=0x4 cmp=skripsi.ubm.studenttracking/.altitudeSurvey (has extras) }: android.os.NetworkOnMainThreadException
这是我的代码:
public void insert() {
String time;
SimpleDateFormat dayFormat = new SimpleDateFormat("HH:mm:ss", Locale.US);
Calendar calendars = Calendar.getInstance();
time = dayFormat.format(calendars.getTime());
try {
httpClient = new DefaultHttpClient();
httpPost = new HttpPost("http://studentstracking.hol.es/altitudeSurvey.php");
nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("baro", value));
nameValuePairs.add(new BasicNameValuePair("jam", time));
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
response = httpClient.execute(httpPost);
ResponseHandler<String> responseHandler = new BasicResponseHandler();
final String response = httpClient.execute(httpPost, responseHandler);
Toast.makeText(altitudeSurvey.this, "Response from Server : " + response, Toast.LENGTH_SHORT).show();
if (response.equalsIgnoreCase("Success")) {
Toast.makeText(getApplicationContext(), "Data has been Inserted", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(getApplicationContext(), "Data Failed", Toast.LENGTH_SHORT).show();
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
这个方法在服务内部。你能帮我解决这个问题吗?
您正面临这个android.os.NetworkOnMainThreadException，这意味着您正在从您的oncreate调用insert()方法。您需要使用AsyncTask，这将使您免于此异常。
private class DownloadFilesTask extends AsyncTask<URL, Integer, Long> {
protected Long doInBackground(URL... urls) {
insert()
return result;
}
protected void onProgressUpdate(Integer... progress) {
}
protected void onPostExecute(Long result) {
}
}
像这样启动asyncTask
new DownloadFilesTask().execute();
将此方法写入asynctask中。
错误:
无法启动服务skripsi.ubm.studenttracking。altitudeSurvey@366d624d with Int
从错误中可以看到你正在主线程上运行网络操作。不能在应用程序的主线程上运行网络操作。
要么你必须创建asynctask或线程在后台线程运行网络操作。