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Note that there are some explanatory texts on larger screens.

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  1. PO
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    <p>Try this, </p> <pre><code>public class Activity_Currency_Converter extends DashBoardActivity { public int to; public int from; public String [] val; public String s; public Handler handler; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_currency_converter); Spinner s1 = (Spinner) findViewById(R.id.spinner1); Spinner s2 = (Spinner) findViewById(R.id.spinner2); ArrayAdapter&lt;CharSequence&gt; adapter = ArrayAdapter.createFromResource( this, R.array.name, android.R.layout.simple_spinner_item); adapter.setDropDownViewResource(android.R.layout.select_dialog_singlechoice); val = getResources().getStringArray(R.array.value); s1.setAdapter(adapter); s2.setAdapter(adapter); s1.setOnItemSelectedListener(new spinOne(1)); s2.setOnItemSelectedListener(new spinOne(2)); Button b = (Button) findViewById(R.id.button1); b.setOnClickListener(new OnClickListener(){ public void onClick(View v) { TextView t = (TextView) findViewById(R.id.textView4); if(from == to) { Toast.makeText(getApplicationContext(), "Invalid", 4000).show(); } else { new GetResponseData(t).execute(); } } }); } public String getJson(String url)throws ClientProtocolException, IOException { StringBuilder build = new StringBuilder(); HttpClient client = new DefaultHttpClient(); HttpGet httpGet = new HttpGet(url); HttpResponse response = client.execute(httpGet); HttpEntity entity = response.getEntity(); InputStream content = entity.getContent(); BufferedReader reader = new BufferedReader(new InputStreamReader(content)); String con; while ((con = reader.readLine()) != null) { build.append(con); } return build.toString(); } private class spinOne implements OnItemSelectedListener { int ide; spinOne(int i) { ide =i; } public void onItemSelected(AdapterView&lt;?&gt; parent, View view, int index, long id) { if(ide == 1) from = index; else if(ide == 2) to = index; } public void onNothingSelected(AdapterView&lt;?&gt; arg0) { // TODO Auto-generated method stub } } class GetResponseData extends AsyncTask&lt;String, String, String&gt; { private ProgressDialog dialog; private ArrayList&lt;String&gt; titleList; private TextView textView; public GetResponseData(TextView textView) { this.textView=textView; } @Override protected void onPreExecute() { super.onPreExecute(); dialog = ProgressDialog.show(Activity_Currency_Converter.this, "", "Loading", false); } @Override protected String doInBackground(String... params) { try { String s = getJson("http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.finance.xchange%20where%20pair%20in%20(%22"+val[from]+val[to]+"%22)&amp;format=json&amp;diagnostics=true&amp;env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys&amp;callback="); JSONObject jObj; jObj = new JSONObject(s); String exResult = jObj.getJSONObject("query").getJSONObject("results").getJSONObject("rate").getString("Rate"); return exResult; } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); return null; } catch (ClientProtocolException e) { // TODO Auto-generated catch block e.printStackTrace(); return null; } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); return null; } } @Override protected void onPostExecute(String result) { super.onPostExecute(result); if (dialog != null) dialog.dismiss(); if(result!=null) { textView.setText(result); } } } } </code></pre>
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    1. This table or related slice is empty.
    1. POAndroid app crashes on network request
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    1. This table or related slice is empty.
    1. USSathishKumar
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POAndroid app crashes on network request
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    1. This table or related slice is empty.
    1. VO
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      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
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      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    1. COThank you, this solved the error.
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      1. PO
      1. USDevCon
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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