android-asynctask

问题 here is the method i found in internet to upload picture to server. but it crashes. i have no idea why. could somebody help me to solve thus problem? maybe someone did that, and knows more clearer example of uploading photos to php server? private void doFileUpload() { HttpURLConnection conn = null; DataOutputStream dos = null; DataInputStream inStream = null; String exsistingFileName = "/mnt/sdcard/Pictures/album/test.jpg"; // Is this the place are you doing something wrong. String lineEnd =

问题 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. Closed 7 years ago . I have a fragment Fragment1.In that fragment I am parsing XML and populating list view.I have to execute the function parsing and population of list view

问题 I want to get DOCUMENT which return Jsoup.connect("url").get() from AsyncTask, can i to return it? I just want to create class which will be to help me to get data from some url )) Activity class: @Override protected void onCreate(Bundle savedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); lv = (ListView) findViewById(R.id.listView1); try { doc = new GetDataFromUrl(this).execute(functions_list).get(); } catch (InterruptedException e) { // TODO Auto

问题 How do I run an AsyncTask at regular interval of 2 mins sleep for 10 times in the background service? As VM stops my service at any time, my AsyncTask is also getting closed. I have tried ScheduledThreadPoolExecutor , Timer , TimerTask all gets stopped once Service gets stopped. Is there a good option start with? Any help is appreciated. 回答1: Your service will never get stopped but you should show notification. Try implementing foreground service. foreground service Foreground service

问题 I am working on an Android project and for Login I am communicating with the server for authentication. Even though I am using AsyncTask, I am getting NetworkOnMain thread exception. Why is that. Here is my code : public class Login extends Activity { public static RestTemplate rest = new RestTemplate(); Button loginButton = (Button) findViewById(R.id.LoginButton); loginButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (!(v == null)) { EditText

问题 I have created a file with an asynctask. Afterwards scheduled an executor to write information to said file once every second. Once I touch a button the executor is shut down and the file closed but more often than not nothing is written in the file. Code: startButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { preferences.edit().putBoolean(GlobalConstants.stopPreference,false).commit(); loc_thr = new LocationThread(preferences, getApplicationContext()); loc

问题 This question already has answers here : How to fix 'android.os.NetworkOnMainThreadException'? (55 answers) Closed 5 years ago . On the click event add data to MySQL database through php on the localhost. Its showing following logcat error on the click event. Please help me to solve this problem. 08-11 07:31:06.416: D/gralloc_goldfish(971): Emulator without GPU emulation detected. 08-11 07:31:53.377: D/Inside Click(971): aaaaaaa 08-11 07:31:53.837: D/inid doinbackground(971): aaaaaaa 08-11 07

问题 In my Android async task class, I'm fetching data from an Azure server to local database inside DoinBackground method But before finishing the DoinBackground method, it's executing the OnPostExecute method Inside OnPostExecute method I am disabling the ProgressBar Help me to solve this issue. My code: public class AsyncTaskSync_UserGroupMappingTableClass extends AsyncTask<String, String, Boolean> { { @Override protected void onPreExecute() { super.onPreExecute(); } @Override protected Boolean

问题 In my Android async task class, I'm fetching data from an Azure server to local database inside DoinBackground method But before finishing the DoinBackground method, it's executing the OnPostExecute method Inside OnPostExecute method I am disabling the ProgressBar Help me to solve this issue. My code: public class AsyncTaskSync_UserGroupMappingTableClass extends AsyncTask<String, String, Boolean> { { @Override protected void onPreExecute() { super.onPreExecute(); } @Override protected Boolean

问题 In my app I have a list view, which contains an image view. The image is loaded from bas64 encoded string. First the string is decoded and then converted it to bitmap and then the bitmap is loaded to the image view. All the decoding is done in an async task and concurrency is handled according to the below documentation. Processing Bitmaps Off the UI Thread The problem is the app is scrolling slow, and all other async tasks are not executing after that. any possible solutions? 回答1: You