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POTextView not updating in custom View
 

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  1. POTextView not updating in custom View
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    <p>I have a fragment that acquires the GPS signal and sends the result to a custom view. </p> <p>I can display the output from the signal acquired in the fragment and see that it updates just fine. Here's the code for fragment1:</p> <pre><code> @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { RelativeLayout view = (RelativeLayout) inflater.inflate(R.layout.gps_stamp_fragment, container,false); RelativeLayout rl1 = new RelativeLayout(view.getContext()); TextView tView1 = new TextView(view.getContext()); tView1.setText("waiting..."); //this is the only thing custom view gets! rl1.addView(tView1); rl1.setId(1); tView1.setId(2); view.addView (rl1); lm =(LocationManager) getActivity().getSystemService(Context.LOCATION_SERVICE); lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 500, 1, this); return view; } //And here's where I get the GPS signal from and use setText again to update to the GPS signal. @Override public void onLocationChanged(Location arg0) { String lat = String.valueOf(arg0.getLatitude()); RelativeLayout rl1 = (RelativeLayout) getView().findViewById(1); TextView tView1 = (TextView) rl1.findViewById(2); tView1.setText(lat); } </code></pre> <p>Then, in the custom view I have the following code which finds the relative layout and associated text view and gets the text.</p> <pre><code>RelativeLayout rl1 = (RelativeLayout) getRootView().findViewById(1); TextView tView1 = (TextView) rl1.findViewById(2); tView1.getText(); getRootView().invalidate(); </code></pre> <p>The problem is that the only text that ever appears in this custom view is the "waiting...". The GPS measurements never appear.</p> <p>I have read in similar questions that I need to .invalidate() the view which is why I added the last line, but this did not seem to work for me.</p> <p>Why does the TextView update properly when called from fragment1, but not when called from the custom view?</p> <p>Thanks.</p>
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