convert simpleactivity to kotlin

app/src/main/java/com/simplemobiletools/gallery/activities/MainActivity.java

@@ -472,7 +472,7 @@ public class MainActivity extends SimpleActivity
         for (int i = 0; i < cnt; i++) {
             if (items.valueAt(i)) {
                 final int id = items.keyAt(i);
-                if (mConfig.getIsFolderHidden(mDirs.get(id).getPath()))
+                if (getConfig().getIsFolderHidden(mDirs.get(id).getPath()))
                     hiddenCnt++;
                 else
                     unhiddenCnt++;
@@ -526,12 +526,12 @@ public class MainActivity extends SimpleActivity
     }
 
     private void hideFolders() {
-        mConfig.addHiddenDirectories(getSelectedPaths());
+        getConfig().addHiddenDirectories(getSelectedPaths());
         getDirectories();
     }
 
     private void unhideFolders() {
-        mConfig.removeHiddenDirectories(getSelectedPaths());
+        getConfig().removeHiddenDirectories(getSelectedPaths());
         getDirectories();
     }
 

app/src/main/java/com/simplemobiletools/gallery/activities/MediaActivity.java

@@ -132,7 +132,7 @@ public class MediaActivity extends SimpleActivity
     public boolean onCreateOptionsMenu(Menu menu) {
         getMenuInflater().inflate(R.menu.menu_media, menu);
 
-        final boolean isFolderHidden = mConfig.getIsFolderHidden(mPath);
+        final boolean isFolderHidden = getConfig().getIsFolderHidden(mPath);
         menu.findItem(R.id.hide_folder).setVisible(!isFolderHidden);
         menu.findItem(R.id.unhide_folder).setVisible(isFolderHidden);
 
@@ -174,16 +174,16 @@ public class MediaActivity extends SimpleActivity
     }
 
     private void hideDirectory() {
-        mConfig.addHiddenDirectory(mPath);
+        getConfig().addHiddenDirectory(mPath);
 
-        if (!mConfig.getShowHiddenFolders())
+        if (!getConfig().getShowHiddenFolders())
             finish();
         else
             invalidateOptionsMenu();
     }
 
     private void unhideDirectory() {
-        mConfig.removeHiddenDirectory(mPath);
+        getConfig().removeHiddenDirectory(mPath);
         invalidateOptionsMenu();
     }
 
@@ -236,7 +236,7 @@ public class MediaActivity extends SimpleActivity
             }
         }
 
-        Medium.mSorting = mConfig.getSorting();
+        Medium.mSorting = getConfig().getSorting();
         Collections.sort(media);
 
         final String[] invalids = invalidFiles.toArray(new String[invalidFiles.size()]);

app/src/main/java/com/simplemobiletools/gallery/activities/SimpleActivity.java

@@ -1,35 +0,0 @@
-package com.simplemobiletools.gallery.activities;
-
-import android.os.Bundle;
-import android.support.annotation.Nullable;
-import android.support.v7.app.AppCompatActivity;
-import android.view.MenuItem;
-
-import com.simplemobiletools.gallery.Config;
-import com.simplemobiletools.gallery.R;
-
-public class SimpleActivity extends AppCompatActivity {
-    protected Config mConfig;
-
-    @Override
-    protected void onCreate(@Nullable Bundle savedInstanceState) {
-        mConfig = Config.newInstance(getApplicationContext());
-        int theme = mConfig.getIsDarkTheme() ? R.style.AppTheme_Dark : R.style.AppTheme;
-        if (this instanceof ViewPagerActivity || this instanceof PhotoActivity || this instanceof VideoActivity) {
-            theme = mConfig.getIsDarkTheme() ? R.style.FullScreenTheme_Dark : R.style.FullScreenTheme;
-        }
-        setTheme(theme);
-        super.onCreate(savedInstanceState);
-    }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-        switch (item.getItemId()) {
-            case android.R.id.home:
-                finish();
-                return true;
-            default:
-                return super.onOptionsItemSelected(item);
-        }
-    }
-}

app/src/main/java/com/simplemobiletools/gallery/activities/ViewPagerActivity.java

@@ -247,7 +247,7 @@ public class ViewPagerActivity extends SimpleActivity
     @TargetApi(Build.VERSION_CODES.KITKAT)
     private void saveTreeUri(Intent resultData) {
         Uri treeUri = resultData.getData();
-        mConfig.setTreeUri(resultData.getData().toString());
+        getConfig().setTreeUri(resultData.getData().toString());
 
         int takeFlags = Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION;
         getContentResolver().takePersistableUriPermission(treeUri, takeFlags);
@@ -393,7 +393,7 @@ public class ViewPagerActivity extends SimpleActivity
             }
         }
 
-        Medium.mSorting = mConfig.getSorting();
+        Medium.mSorting = getConfig().getSorting();
         Collections.sort(media);
         int j = 0;
         for (Medium medium : media) {

app/src/main/kotlin/com/simplemobiletools/gallery/activities/SimpleActivity.kt

@@ -0,0 +1,32 @@
+package com.simplemobiletools.gallery.activities
+
+import android.os.Bundle
+import android.support.v7.app.AppCompatActivity
+import android.view.MenuItem
+
+import com.simplemobiletools.gallery.Config
+import com.simplemobiletools.gallery.R
+
+open class SimpleActivity : AppCompatActivity() {
+    lateinit var config: Config
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        config = Config.newInstance(applicationContext)
+        var theme = if (config.isDarkTheme) R.style.AppTheme_Dark else R.style.AppTheme
+        if (this is ViewPagerActivity || this is PhotoActivity || this is VideoActivity) {
+            theme = if (config.isDarkTheme) R.style.FullScreenTheme_Dark else R.style.FullScreenTheme
+        }
+        setTheme(theme)
+        super.onCreate(savedInstanceState)
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        return when (item.itemId) {
+            android.R.id.home -> {
+                finish()
+                true
+            }
+            else -> super.onOptionsItemSelected(item)
+        }
+    }
+}