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POGPS Android program stopping unexpectedly
 

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    <p>I am new to Android and running into a difficulty with a basic GPS information display program. The program is stopping unexpectedly. I would appreciate any suggestions or comments you may have.</p> <p>I am coding for Android 2.3.3 in Eclipse with Android Development Tools.</p> <p>What I see as relevant sections of code are given below, but, for your convenience, the project is archived here:</p> <p><a href="http://www.filedropper.com/showdownload.php/2013-06-05t1434gps1" rel="nofollow">http://www.filedropper.com/showdownload.php/2013-06-05t1434gps1</a></p> <p>The sections of code follow:</p> <p>Main.java:</p> <pre><code>package com.example.gps_1; import android.app.Activity; import android.content.Intent; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.location.LocationProvider; import android.os.Bundle; import android.util.Log; import android.widget.TextView; import android.widget.Toast; public class Main extends Activity implements LocationListener { /* This class implements LocationListener, which listens for both changes in * the location of the device and changes in the status * of the GPS system. * */ static final String tag = "Main"; // for Log TextView txtInfo; LocationManager lm; StringBuilder sb; int noOfFixes = 0; /** called when the activity is first created */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); /* Have TextView display the GPS data. * */ txtInfo = (TextView) findViewById(R.id.textInfo); /* The location manager is allows access to location and GPS status * services. * */ lm = (LocationManager) getSystemService(LOCATION_SERVICE); } @Override protected void onResume() { /* onResume is called after onStart even if the program has not been paused. * * Add location listener and request updates every 1000 ms or 10 m. */ lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 10f, this); super.onResume(); } @Override protected void onPause() { /* GPS has non-negligible battery consumption.*/ lm.removeUpdates(this); super.onPause(); } @Override public void onLocationChanged(Location location) { Log.v(tag, "location changed"); sb = new StringBuilder(512); noOfFixes++; /* Display some of the information in the TextView. */ sb.append("number of fixes: "); sb.append(noOfFixes); sb.append('\n'); sb.append('\n'); sb.append("longitude: "); sb.append(location.getLongitude()); sb.append('\n'); sb.append("latitude: "); sb.append(location.getLatitude()); sb.append('\n'); sb.append("altitiude: "); sb.append(location.getAltitude()); sb.append('\n'); sb.append("accuracy: "); sb.append(location.getAccuracy()); sb.append('\n'); sb.append("timestamp: "); sb.append(location.getTime()); sb.append('\n'); txtInfo.setText(sb.toString()); } @Override public void onProviderDisabled(String provider) { /* this is called if/when the GPS is disabled in settings */ Log.v(tag, "disabled"); /* bring up the GPS settings */ Intent intent = new Intent( android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS); startActivity(intent); } @Override public void onProviderEnabled(String provider) { Log.v(tag, "enabled"); Toast.makeText(this, "GPS enabled", Toast.LENGTH_SHORT).show(); } @Override public void onStatusChanged(String provider, int status, Bundle extras) { /* This is called when the GPS status alters */ switch (status) { case LocationProvider.OUT_OF_SERVICE: Log.v(tag, "status changed: out of service"); Toast.makeText(this, "status changed: out of service", Toast.LENGTH_SHORT).show(); break; case LocationProvider.TEMPORARILY_UNAVAILABLE: Log.v(tag, "status changed: temporarily unavailable"); Toast.makeText(this, "status changed: temporarily unavailable", Toast.LENGTH_SHORT).show(); break; case LocationProvider.AVAILABLE: Log.v(tag, "status changed: available"); Toast.makeText(this, "status changed: available", Toast.LENGTH_SHORT).show(); break; } } @Override protected void onStop() { /* upgrade: save the state */ finish(); super.onStop(); } } </code></pre> <p>main.xml:</p> <pre><code>&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context=".Main" &gt; &lt;TextView android:id="@+id/textInfo" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/hello_world" /&gt; &lt;/RelativeLayout&gt; </code></pre>
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      1. USSamir Mangroliya
 

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