android-json

Convert SQLite to JSON

由 北城余情 提交于 2019-11-27 12:22:31
问题 Is there a way to convert sqlite to json? All other questions are parsing json and saving to sqlite. I can't seem to find any reference on this, please help me. I have a sqlite db inside the app and i need it to be converted to json, upgrade db version, parse earlier converted json and add another table. Any suggestions on how should I do this? Thanks in advance. 回答1: Reference Link private JSONArray getResults() { String myPath = DB_PATH + DB_NAME;// Set path to your database String myTable

How to update ui from asynctask

由 旧时模样 提交于 2019-11-27 04:39:53
I've seen many examples of how to do this, but I can't figure how to implement it in my code. I using this code . I have updated the url, so it will receive a json with dynamic data. What I'm trying to do is to automatically update the list every 30 secs with this code. Handler handler = new Handler(); Runnable refresh = new Runnable() { public void run() { new GetContacts().execute(); handler.postDelayed(refresh, 30000); } }; It refreshed, and call the url and gets the data, but the UI does not get updated. Thank for any hints that helps my in the right direction. http://www.androidhive.info

Android Studio 2.0 Preview: ':app:transformClassesWithInstantRunForDebug' FAILED

由 扶醉桌前 提交于 2019-11-27 02:04:49
问题 I'm getting this error in Gradle in Android Studio: :cart:transformClassesWithInstantRunForDebug FAILED Error:Execution failed for task :cart:transformClassesWithInstantRunForDebug'.> java.lang.ClassNotFoundException: com.google.gsonhtcfix.JsonSyntaxException` I am not able to run/execute my project in Android Studio. How can I resolve this issue? 回答1: Resolved : Disable the Instant Run option in Android Studio 2.0 Preview 回答2: Something you can try is deleting the build folder. That does not

How to update ui from asynctask

由 喜欢而已 提交于 2019-11-26 11:17:33
问题 I\'ve seen many examples of how to do this, but I can\'t figure how to implement it in my code. I am using this code. I have updated the url, so it will receive a json with dynamic data. What I\'m trying to do is to automatically update the list every 30 secs with this code. Handler handler = new Handler(); Runnable refresh = new Runnable() { public void run() { new GetContacts().execute(); handler.postDelayed(refresh, 30000); } }; It refreshes, and calls the url and gets the data, but the UI

Send POST request with JSON data using Volley

由 梦想与她 提交于 2019-11-26 00:15:41
问题 I would like to send a new JsonObjectRequest request: I want to receive JSON data (response from server): OK I want to send JSON formatted data with this request to the server JsonObjectRequest request = new JsonObjectRequest( Request.Method.POST, \"myurl.com\", null, new Response.Listener<JSONObject>() { @Override public void onResponse(JSONObject response) { //... } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError error) { //... } }) { @Override protected

How to POST raw whole JSON in the body of a Retrofit request?

由 好久不见. 提交于 2019-11-25 22:00:59
问题 This question may have been asked before but no it was not definitively answered. How exactly does one post raw whole JSON inside the body of a Retrofit request? See similar question here. Or is this answer correct that it must be form url encoded and passed as a field? I really hope not, as the services I am connecting to are just expecting raw JSON in the body of the post. They are not set up to look for a particular field for the JSON data. I just want to clarify this with the restperts
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