Android: fixed build errors

Android/.gitignore

@@ -46,3 +46,4 @@ constants.inc.php
 error_log
 
 app/src/main/java/Util/Constants.java
+*.hprof

Android/app/build.gradle

@@ -1,8 +1,8 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 23
-    buildToolsVersion "23.0.3"
+    compileSdkVersion 24
+    buildToolsVersion "24.0.2"
     defaultConfig {
         applicationId "tie.hackathon.travelguide"
         minSdkVersion 19
@@ -37,8 +37,8 @@ dependencies {
 
     compile 'com.squareup.okhttp3:okhttp:3.4.1'
 
-    compile 'com.android.support:appcompat-v7:+'
-    compile 'com.android.support:design:+'
+    compile 'com.android.support:appcompat-v7:23.1.1'
+    compile 'com.android.support:design:23.1.1'
 
     compile 'de.hdodenhof:circleimageview:2.0.0'
     compile 'com.github.ParkSangGwon:TedPicker:v1.0.10'

Android/app/src/main/java/Util/GPSTracker.java

@@ -116,6 +116,8 @@ private Location getLocation() {
             e.printStackTrace();
         }
 
+        return location;
+
     }
 
     @Override

Android/gradle.properties

@@ -10,7 +10,7 @@
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
 # Default value: -Xmx10248m -XX:MaxPermSize=256m
-# org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
+ org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
 
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit