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POwhy does my android app which uses GPS to find the current location encounters a crash, every time I run it? It shows a force close
 

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  1. POwhy does my android app which uses GPS to find the current location encounters a crash, every time I run it? It shows a force close
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    <p>I'.m developing this on Eclipse. My app aims at finding the current location using GPS, but when I run it on the emulator, it shows an unexpected force close. I have attached the main.xml, java file and manifest.xml.</p> <p><strong>Main file:</strong></p> <pre><code>&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" tools:context=".GooglemapsActivity" &gt; &lt;com.google.android.maps.MapView android:id="@+id/mapview1" android:layout_width="fill_parent" android:layout_height="fill_parent" android:enabled="true" android:clickable="true" android:apiKey="0o6t2Gs5-C0eAHL2ZNbwvzu4pwsgX50HX2X8rKA" /&gt; &lt;/RelativeLayout&gt; </code></pre> <p><strong>Java file:</strong></p> <pre><code>package com.example.mapgp; import android.location.Location; import android.location.LocationManager; import android.location.LocationListener; import android.os.Bundle; import android.app.Activity; import android.content.Context; import android.view.Menu; import com.example.mapgp.R; import com.google.android.maps.GeoPoint; import com.google.android.maps.MapActivity; import com.google.android.maps.MapController; import com.google.android.maps.MapView; import android.widget.Toast; public class Gmapwithgps extends MapActivity { public MapView mapView; public MapController mc; public MyLocationListener locl; public LocationManager manager; public class MyLocationListener implements LocationListener { public void onLocationChanged(Location loc) { loc.getLatitude(); loc.getLongitude(); String Text = "My current location is: " + "Lati = " + loc.getLatitude() + "Longi = " + loc.getLongitude(); Toast.makeText( getApplicationContext(), Text, Toast.LENGTH_SHORT).show(); } @Override public void onProviderDisabled(String provider) { Toast.makeText( getApplicationContext(),"Gps Disabled",Toast.LENGTH_SHORT ).show(); } @Override public void onProviderEnabled(String provider) { Toast.makeText( getApplicationContext(),"Gps Enabled",Toast.LENGTH_SHORT).show(); } @Override public void onStatusChanged(String provider, int status, Bundle extras) { } } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_gmapwithgps); mapView = (MapView) findViewById(R.id.mapview1); mapView.setBuiltInZoomControls(true); mc = mapView.getController(); manager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE); locl = new MyLocationListener(); manager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 35000, 10, this.locl); } protected boolean isRouteDisplayed() { return false; } public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.activity_gmapwithgps, menu); return true; } </code></pre> <p>}</p> <p><strong>Manifest.xml file:</strong></p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.mapgp" android:versionCode="1" android:versionName="1.0" &gt; &lt;uses-sdk android:minSdkVersion="8" android:targetSdkVersion="10" /&gt; &lt;uses-permission android:name="android.permission.INTERNET"/&gt; &lt;uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/&gt; &lt;uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/&gt; &lt;application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" &gt; &lt;uses-library android:name="com.google.android.maps"/&gt; &lt;activity android:name="com.example.mapgp.GmapwithgpsActivity" android:label="@string/app_name" &gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.MAIN" /&gt; &lt;category android:name="android.intent.category.LAUNCHER" /&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;/application&gt; </code></pre> <p></p> <p><strong>Logcat:</strong></p> <pre><code>01-04 22:36:54.120: D/AndroidRuntime(1510): Shutting down VM 01-04 22:36:54.120: W/dalvikvm(1510): threadid=1: thread exiting with uncaught exception (group=0x40015560) 01-04 22:36:54.251: E/AndroidRuntime(1510): FATAL EXCEPTION: main 01-04 22:36:54.251: E/AndroidRuntime(1510): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.mapgp/com.example.mapgp.GmapwithgpsActivity}: java.lang.ClassNotFoundException: com.example.mapgp.GmapwithgpsActivity in loader dalvik.system.PathClassLoader[/system/framework/com.google.android.maps.jar:/data/app/com.example.mapgp-1.apk] 01-04 22:36:54.251: E/AndroidRuntime(1510): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1569) 01-04 22:36:54.251: E/AndroidRuntime(1510): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663) 01-04 22:36:54.251: E/AndroidRuntime(1510): at android.app.ActivityThread.access$1500(ActivityThread.java:117) 01-04 22:36:54.251: E/AndroidRuntime(1510): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931) 01-04 22:36:54.251: E/AndroidRuntime(1510): at android.os.Handler.dispatchMessage(Handler.java:99) 01-04 22:36:54.251: E/AndroidRuntime(1510): at android.os.Looper.loop(Looper.java:130) 01-04 22:36:54.251: E/AndroidRuntime(1510): at android.app.ActivityThread.main(ActivityThread.java:3683) 01-04 22:36:54.251: E/AndroidRuntime(1510): at java.lang.reflect.Method.invokeNative(Native Method) 01-04 22:36:54.251: E/AndroidRuntime(1510): at java.lang.reflect.Method.invoke(Method.java:507) 01-04 22:36:54.251: E/AndroidRuntime(1510): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 01-04 22:36:54.251: E/AndroidRuntime(1510): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 01-04 22:36:54.251: E/AndroidRuntime(1510): at dalvik.system.NativeStart.main(Native Method) 01-04 22:36:54.251: E/AndroidRuntime(1510): Caused by: java.lang.ClassNotFoundException: com.example.mapgp.GmapwithgpsActivity in loader dalvik.system.PathClassLoader[/system/framework/com.google.android.maps.jar:/data/app/com.example.mapgp-1.apk] 01-04 22:36:54.251: E/AndroidRuntime(1510): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240) 01-04 22:36:54.251: E/AndroidRuntime(1510): at java.lang.ClassLoader.loadClass(ClassLoader.java:551) 01-04 22:36:54.251: E/AndroidRuntime(1510): at java.lang.ClassLoader.loadClass(ClassLoader.java:511) 01-04 22:36:54.251: E/AndroidRuntime(1510): at android.app.Instrumentation.newActivity(Instrumentation.java:1021) 01-04 22:36:54.251: E/AndroidRuntime(1510): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1561) 01-04 22:36:54.251: E/AndroidRuntime(1510): ... 11 more 01-04 22:37:24.730: I/Process(1510): Sending signal. PID: 1510 SIG: 9 </code></pre>
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    1. USKds23
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    1. COPlease paste logcat here also.
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      1. POwhy does my android app which uses GPS to find the current location encounters a crash, every time I run it? It shows a force close
      1. USAjay S
    2. CO@TGMCians i've posted the logcat
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      1. POwhy does my android app which uses GPS to find the current location encounters a crash, every time I run it? It shows a force close
      1. USKds23
 

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