I have an update fragment using which i will update data in my database. Once the update is done i move back to 'view the data from database' fragment and i need the list to be updated. I think i have to write code for this inside onResume() but i don't know how to do it. Code for 'view the data from database' fragment:
public class Testing extends Fragment {
String uname="921312104053";
private static final String TAG_RESULTS="result";
private static final String TAG_Sname = "Subject_name";
private static final String TAG_Scode = "Subject_code";
private static final String TAG_Sgrade ="Grade";
ListView lv;
JSONArray subjects = null;
String myJSON;
ListAdapter adapter;
ArrayList<HashMap<String, String>> subList,subList1;
public Testing() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_testing,
container, false);
disp(view);
return view;
}
public void disp(View view)
{
lv = (ListView)view.findViewById(R.id.list);
subList = new ArrayList<HashMap<String,String>>();
getData(view);
}
public void getData(View view){
class GetDataJSON extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... params) {
DefaultHttpClient httpclient = new DefaultHttpClient(new BasicHttpParams());
HttpPost httppost = new HttpPost("http://10.0.2.2/markolepsy/android_connect/testing.php?usrname="+uname);
httppost.setHeader("Content-type", "application/json");
InputStream inputStream = null;
String result = null;
try {
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
inputStream = entity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
result = sb.toString();
} catch (Exception e) {
}
finally {
try{if(inputStream != null)inputStream.close();}catch(Exception squish){}
}
return result;
}
@Override
protected void onPostExecute(String result){
myJSON=result;
showList();
}
}
GetDataJSON g = new GetDataJSON();
g.execute();
}
protected void showList(){
try {
JSONObject jsonObj = new JSONObject(myJSON);
subjects = jsonObj.getJSONArray(TAG_RESULTS);
for(int i=0;i<subjects.length();i++){
JSONObject c = subjects.getJSONObject(i);
String sname = c.getString(TAG_Sname);
String scode = c.getString(TAG_Scode);
String sgrade = c.getString(TAG_Sgrade);
HashMap<String,String> records = new HashMap<String,String>();
records.put(TAG_Sname,sname);
records.put(TAG_Scode,scode);
records.put(TAG_Sgrade,sgrade);
subList.add(records);
}
adapter = new SimpleAdapter(
getActivity(), subList, R.layout.list_layout,
new String[]{TAG_Sname,TAG_Scode,TAG_Sgrade},
new int[]{R.id.subject_name, R.id.subject_code, R.id.grade}
);
lv.setAdapter(adapter);
} catch (JSONException e) {
e.printStackTrace();
}
}
}
