Merge branch 'kunall17-fixed-delete-temp' into bug-fixes

Author: opticod

source-code/app/src/main/java/org/buildmlearn/toolkit/ToolkitApplication.java

@@ -16,7 +16,8 @@
  */
 public class ToolkitApplication extends Application {
 
-    private String dir;
+    private static String dir;
+
     private boolean isExternalStorageAvailable = false;
 
 
@@ -75,7 +76,7 @@ public String getSavedDir() {
      * @brief Returns folder path for unzipped apks
      * @return Folder path
      */
-    public String getUnZipDir() {
+    public static String getUnZipDir() {
         return dir + Constants.UNZIP;
     }
 

source-code/app/src/main/java/org/buildmlearn/toolkit/fragment/SettingsFragment.java

@@ -8,6 +8,9 @@
 import android.widget.Toast;
 
 import org.buildmlearn.toolkit.R;
+import org.buildmlearn.toolkit.ToolkitApplication;
+
+import java.io.File;
 
 /**
  * Created by abhishek on 21/06/15 at 9:51 PM.
@@ -27,7 +30,15 @@ public void onCreate(Bundle savedInstanceState) {
         button.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
             @Override
             public boolean onPreferenceClick(Preference preference) {
-                Toast.makeText(SettingsFragment.this.getActivity(), "Deleting temp files", Toast.LENGTH_SHORT).show();
+
+                String path = ToolkitApplication.getUnZipDir();
+                float size = deleteDirectory(new File(path), 0);
+                size = (float) ((float) Math.round((size / 1048576) * 100d) / 100d);
+                if (size != 0) {
+                    Toast.makeText(SettingsFragment.this.getActivity(), "Deleted " + size + " MB.", Toast.LENGTH_SHORT).show();
+                } else {
+                    Toast.makeText(SettingsFragment.this.getActivity(), "No Temp Files Found!", Toast.LENGTH_SHORT).show();
+                }
                 return true;
             }
         });
@@ -43,4 +54,22 @@ public boolean onPreferenceChange(Preference preference, Object newValue) {
         prefUsername.setSummary(preferences.getString(getString(R.string.key_user_name), ""));
     }
 
+    public static float deleteDirectory(File file, float size) {
+        if (file.exists()) {
+            File[] listFiles = file.listFiles();
+            if (listFiles == null) return 0;
+
+            for (int i = 0; i < listFiles.length; i++) {
+                if (listFiles[i].isDirectory()) {
+                    size += deleteDirectory(listFiles[i], 0);
+                } else {
+                    size += listFiles[i].length();
+                    listFiles[i].delete();
+                }
+            }
+        }
+        file.delete();
+        return (size);
+    }
+
 }