Small changes and warning cleanup

AndroidManifest.xml

@@ -3,20 +3,29 @@
     package="org.traccar.client"
     android:versionCode="6"
     android:versionName="1.5">
-    <application android:label="@string/app_name" android:icon="@drawable/ic_launcher">
+    
-        <activity android:name="TraccarActivity"
+    <uses-sdk android:minSdkVersion="4" android:targetSdkVersion="17" />
+    
+    <uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission>
+    <uses-permission android:name="android.permission.INTERNET"></uses-permission>
+    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>
+    
+    <application android:label="@string/app_name" android:icon="@drawable/ic_launcher" android:allowBackup="true">
+        
+        <activity
+            android:name="TraccarActivity"
             android:label="@string/app_name"
             android:windowSoftInputMode="stateHidden">
+            
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+
         </activity>
+
         <service android:name=".TraccarService" />
+    
     </application>
-    <uses-sdk android:minSdkVersion="4" 
+
-              android:targetSdkVersion="16" />
-    <uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission>
-    <uses-permission android:name="android.permission.INTERNET"></uses-permission>
-    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>
 </manifest>

project.properties

@@ -11,4 +11,4 @@
 #proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
 
 # Project target.
-target=android-16
+target=Google Inc.:Google APIs:17

src/org/traccar/client/Connection.java

@@ -15,12 +15,12 @@
  */
 package org.traccar.client;
 
-import java.io.*;
+import java.io.OutputStream;
-import java.net.*;
+import java.net.Socket;
-import java.util.*;
+
-import android.os.Handler;
-import 	android.content.Intent;
 import android.content.Context;
+import android.content.Intent;
+import android.os.Handler;
 
 /**
  * Connection with autoreconnect

src/org/traccar/client/Protocol.java

@@ -17,6 +17,7 @@ package org.traccar.client;
 
 import java.util.Formatter;
 import java.util.Locale;
+
 import android.location.Location;
 
 /**
@@ -38,6 +39,7 @@ public class Protocol {
             checksum ^= b;
         }
         f.format("*%02x\r\n", (int) checksum);
+        f.close();
 
         return s.toString();
     }
@@ -64,6 +66,7 @@ public class Protocol {
             checksum ^= b;
         }
         f.format("*%02x\r\n", (int) checksum);
+        f.close();
 
         return s.toString();
     }

src/org/traccar/client/TraccarService.java

@@ -15,15 +15,17 @@
  */
 package org.traccar.client;
 
-import java.io.*;
-import java.net.*;
-import java.util.*;
 import android.app.Service;
-import android.content.*;
+import android.content.BroadcastReceiver;
-import android.location.*;
+import android.content.Context;
-import android.os.*;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.location.Location;
+import android.location.LocationListener;
+import android.location.LocationManager;
+import android.os.Bundle;
+import android.os.IBinder;
 import android.telephony.TelephonyManager;
-import android.widget.Toast;
 
 /**
  * Background service
@@ -72,6 +74,7 @@ public class TraccarService extends Service implements LocationListener {
     }
 
     private BroadcastReceiver updateReceiver = new BroadcastReceiver() {
+        @Override
         public void onReceive(Context context, Intent intent) {
             // Send config
             intent = new Intent(Traccar.MSG_SERVICE_CONFIG);