convert 3 simple activity to kotlin

app/src/main/java/com/simplemobiletools/filemanager/activities/LicenseActivity.java

@@ -1,31 +0,0 @@
-package com.simplemobiletools.filemanager.activities;
-
-import android.content.Intent;
-import android.net.Uri;
-import android.os.Bundle;
-
-import com.simplemobiletools.filemanager.R;
-
-import butterknife.ButterKnife;
-import butterknife.OnClick;
-
-public class LicenseActivity extends SimpleActivity {
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_license);
-        ButterKnife.bind(this);
-    }
-
-    @OnClick(R.id.license_butterknife_title)
-    public void butterKnifeClicked() {
-        openUrl(R.string.butterknife_url);
-    }
-
-    private void openUrl(int id) {
-        final String url = getResources().getString(id);
-        final Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
-        startActivity(browserIntent);
-    }
-}

app/src/main/java/com/simplemobiletools/filemanager/activities/SettingsActivity.java

@@ -1,53 +0,0 @@
-package com.simplemobiletools.filemanager.activities;
-
-import android.os.Bundle;
-import android.support.v4.app.TaskStackBuilder;
-import android.support.v7.widget.SwitchCompat;
-
-import com.simplemobiletools.filemanager.Config;
-import com.simplemobiletools.filemanager.R;
-
-import butterknife.BindView;
-import butterknife.ButterKnife;
-import butterknife.OnClick;
-
-public class SettingsActivity extends SimpleActivity {
-    @BindView(R.id.settings_dark_theme) SwitchCompat mDarkThemeSwitch;
-    @BindView(R.id.settings_show_hidden) SwitchCompat mShowHiddenSwitch;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_settings);
-        mConfig = Config.newInstance(getApplicationContext());
-        ButterKnife.bind(this);
-
-        setupDarkTheme();
-        setupShowHidden();
-    }
-
-    private void setupDarkTheme() {
-        mDarkThemeSwitch.setChecked(mConfig.getIsDarkTheme());
-    }
-
-    private void setupShowHidden() {
-        mShowHiddenSwitch.setChecked(mConfig.getShowHidden());
-    }
-
-    @OnClick(R.id.settings_dark_theme_holder)
-    public void handleDarkTheme() {
-        mDarkThemeSwitch.setChecked(!mDarkThemeSwitch.isChecked());
-        mConfig.setIsDarkTheme(mDarkThemeSwitch.isChecked());
-        restartActivity();
-    }
-
-    @OnClick(R.id.settings_show_hidden_holder)
-    public void handleShowHidden() {
-        mShowHiddenSwitch.setChecked(!mShowHiddenSwitch.isChecked());
-        mConfig.setShowHidden(mShowHiddenSwitch.isChecked());
-    }
-
-    private void restartActivity() {
-        TaskStackBuilder.create(getApplicationContext()).addNextIntentWithParentStack(getIntent()).startActivities();
-    }
-}

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

@@ -1,31 +0,0 @@
-package com.simplemobiletools.filemanager.activities;
-
-import android.os.Bundle;
-import android.support.annotation.Nullable;
-import android.support.v7.app.AppCompatActivity;
-import android.view.MenuItem;
-
-import com.simplemobiletools.filemanager.Config;
-import com.simplemobiletools.filemanager.R;
-
-public class SimpleActivity extends AppCompatActivity {
-    protected Config mConfig;
-
-    @Override
-    protected void onCreate(@Nullable Bundle savedInstanceState) {
-        mConfig = Config.newInstance(getApplicationContext());
-        setTheme(mConfig.getIsDarkTheme() ? R.style.AppTheme_Dark : R.style.AppTheme);
-        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/kotlin/com/simplemobiletools/filemanager/activities/LicenseActivity.kt

@@ -0,0 +1,22 @@
+package com.simplemobiletools.filemanager.activities
+
+import android.content.Intent
+import android.net.Uri
+import android.os.Bundle
+import com.simplemobiletools.filemanager.R
+import kotlinx.android.synthetic.main.activity_license.*
+
+class LicenseActivity : SimpleActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_license)
+        license_butterknife_title.setOnClickListener { openUrl(R.string.butterknife_url) }
+    }
+
+    private fun openUrl(id: Int) {
+        val url = resources.getString(id)
+        val browserIntent = Intent(Intent.ACTION_VIEW, Uri.parse(url))
+        startActivity(browserIntent)
+    }
+}

app/src/main/kotlin/com/simplemobiletools/filemanager/activities/SettingsActivity.kt

@@ -0,0 +1,37 @@
+package com.simplemobiletools.filemanager.activities
+
+import android.os.Bundle
+import android.support.v4.app.TaskStackBuilder
+import com.simplemobiletools.filemanager.R
+import kotlinx.android.synthetic.main.activity_settings.*
+
+class SettingsActivity : SimpleActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_settings)
+
+        setupDarkTheme()
+        setupShowHidden()
+    }
+
+    private fun setupDarkTheme() {
+        settings_dark_theme.isChecked = mConfig.isDarkTheme
+        settings_dark_theme_holder.setOnClickListener {
+            settings_dark_theme.toggle()
+            mConfig.isDarkTheme = settings_dark_theme.isChecked
+            restartActivity()
+        }
+    }
+
+    private fun setupShowHidden() {
+        settings_show_hidden.isChecked = mConfig.showHidden
+        settings_show_hidden_holder.setOnClickListener {
+            settings_show_hidden.toggle()
+            mConfig.showHidden = settings_show_hidden.isChecked
+        }
+    }
+
+    private fun restartActivity() {
+        TaskStackBuilder.create(applicationContext).addNextIntentWithParentStack(intent).startActivities()
+    }
+}

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

@@ -0,0 +1,28 @@
+package com.simplemobiletools.filemanager.activities
+
+import android.os.Bundle
+import android.support.v7.app.AppCompatActivity
+import android.view.MenuItem
+
+import com.simplemobiletools.filemanager.Config
+import com.simplemobiletools.filemanager.R
+
+open class SimpleActivity : AppCompatActivity() {
+    lateinit var mConfig: Config
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        mConfig = Config.newInstance(applicationContext)
+        setTheme(if (mConfig.isDarkTheme) R.style.AppTheme_Dark else R.style.AppTheme)
+        super.onCreate(savedInstanceState)
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        return when (item.itemId) {
+            android.R.id.home -> {
+                finish()
+                true
+            }
+            else -> super.onOptionsItemSelected(item)
+        }
+    }
+}