Merge pull request #717 from Nirothipan/master

Changes in Android Try It Emulator due to SDK folder structure change

components/mobile-plugins/android-plugin/org.wso2.carbon.device.mgt.mobile.android.emulator/src/main/java/org.carbon.android.emulator/TryIt.java

@@ -766,6 +766,22 @@ public class TryIt {
             default:
                 qemuSystemFileLocation += osSuffix + "-x86_64" + File.separator + "qemu-system-i386";
         }
+        setExecutePermission(qemuSystemFileLocation);
+
+        qemuSystemFileLocation = androidSdkHome + File.separator + "emulator" + File.separator
+                + "qemu" + File.separator;
+
+        switch (osSuffix) {
+            case Constants.MAC_OS:
+                qemuSystemFileLocation += Constants.MAC_DARWIN + "-x86_64" + File.separator + "qemu-system-i386";
+                break;
+            case Constants.WINDOWS_OS:
+                qemuSystemFileLocation += osSuffix + "-x86_64" + File.separator + "qemu-system-i386.exe";
+                break;
+            default:
+                qemuSystemFileLocation += osSuffix + "-x86_64" + File.separator + "qemu-system-i386";
+        }
+
         killServer();
         setExecutePermission(qemuSystemFileLocation);
         ExecutorService service = Executors.newSingleThreadExecutor();
@@ -814,6 +830,7 @@ public class TryIt {
      * @param fileName name of the file to set execution permission.
      */
     private void setExecutePermission(String fileName) {
+        if (new File((fileName)).exists()) {
             if (!new File(fileName).canExecute()) {
                 if (!new File(fileName).setExecutable(true)) {
                     System.out.println("Unable to set the execute permission of : " + fileName);
@@ -823,6 +840,7 @@ public class TryIt {
                 }
             }
         }
+    }
 
     /**
      * This method extracts the zip folder.