Add dark theme and black theme

app/src/main/java/com/hippo/ehviewer/ui/EhActivity.java

@@ -19,6 +19,7 @@ package com.hippo.ehviewer.ui;
 import android.content.Context;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
+import android.support.annotation.StyleRes;
 import android.support.v7.app.AppCompatActivity;
 import android.view.WindowManager;
 import com.google.analytics.tracking.android.EasyTracker;
@@ -31,8 +32,13 @@ public abstract class EhActivity extends AppCompatActivity {
 
     private boolean mTrackStarted;
 
+    @StyleRes
+    protected abstract int getThemeResId(int theme);
+
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
+        setTheme(getThemeResId(Settings.getTheme()));
+
         super.onCreate(savedInstanceState);
 
         ((EhApplication) getApplication()).registerActivity(this);

app/src/main/java/com/hippo/ehviewer/ui/EhPreferenceActivity.java

@@ -20,6 +20,7 @@ import android.content.Context;
 import android.content.res.Resources;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
+import android.support.annotation.StyleRes;
 import android.view.WindowManager;
 import com.google.analytics.tracking.android.EasyTracker;
 import com.hippo.app.PrettyPreferenceActivity;
@@ -32,8 +33,13 @@ public abstract class EhPreferenceActivity extends PrettyPreferenceActivity {
 
     private boolean mTrackStarted;
 
+    @StyleRes
+    protected abstract int getThemeResId(int theme);
+
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
+        setTheme(getThemeResId(Settings.getTheme()));
+
         super.onCreate(savedInstanceState);
 
         ((EhApplication) getApplication()).registerActivity(this);

app/src/main/java/com/hippo/ehviewer/ui/GalleryActivity.java

@@ -182,6 +182,19 @@ public class GalleryActivity extends EhActivity implements SeekBar.OnSeekBarChan
         }
     };
 
+    @Override
+    protected int getThemeResId(int theme) {
+        switch (theme) {
+            case Settings.THEME_LIGHT:
+            default:
+                return R.style.AppTheme_Gallery;
+            case Settings.THEME_DARK:
+                return R.style.AppTheme_Gallery_Dark;
+            case Settings.THEME_BLACK:
+                return R.style.AppTheme_Gallery_Black;
+        }
+    }
+
     private void buildProvider() {
         if (mGalleryProvider != null) {
             return;

app/src/main/java/com/hippo/ehviewer/ui/MainActivity.java

@@ -142,6 +142,19 @@ public final class MainActivity extends StageActivity
         registerLaunchMode(ProgressScene.class, SceneFragment.LAUNCH_MODE_STANDARD);
     }
 
+    @Override
+    protected int getThemeResId(int theme) {
+        switch (theme) {
+            case Settings.THEME_LIGHT:
+            default:
+                return R.style.AppTheme_Main;
+            case Settings.THEME_DARK:
+                return R.style.AppTheme_Main_Dark;
+            case Settings.THEME_BLACK:
+                return R.style.AppTheme_Main_Black;
+        }
+    }
+
     @Override
     public int getContainerViewId() {
         return R.id.fragment_container;

app/src/main/java/com/hippo/ehviewer/ui/SettingsActivity.java

@@ -25,6 +25,7 @@ import android.support.v7.app.ActionBar;
 import android.support.v7.app.ActionBarDrawerToggle;
 import android.view.MenuItem;
 import com.hippo.ehviewer.R;
+import com.hippo.ehviewer.Settings;
 import com.hippo.ehviewer.ui.fragment.AboutFragment;
 import com.hippo.ehviewer.ui.fragment.AdvancedFragment;
 import com.hippo.ehviewer.ui.fragment.DownloadFragment;
@@ -47,6 +48,19 @@ public final class SettingsActivity extends EhPreferenceActivity {
             PrivacyFragment.class.getName(),
     };
 
+    @Override
+    protected int getThemeResId(int theme) {
+      switch (theme) {
+        case Settings.THEME_LIGHT:
+        default:
+          return R.style.AppTheme_Settings;
+        case Settings.THEME_DARK:
+          return R.style.AppTheme_Settings_Dark;
+        case Settings.THEME_BLACK:
+          return R.style.AppTheme_Settings_Black;
+      }
+    }
+
     private void setActionBarUpIndicator(Drawable drawable) {
         ActionBarDrawerToggle.Delegate delegate = getDrawerToggleDelegate();
         if (delegate != null) {

app/src/main/java/com/hippo/ehviewer/ui/ToolbarActivity.java

@@ -25,9 +25,23 @@ import android.view.View;
 import android.view.ViewGroup;
 
 import com.hippo.ehviewer.R;
+import com.hippo.ehviewer.Settings;
 
 public abstract class ToolbarActivity extends EhActivity {
 
+    @Override
+    protected int getThemeResId(int theme) {
+        switch (theme) {
+            case Settings.THEME_LIGHT:
+            default:
+                return R.style.AppTheme_Toolbar;
+            case Settings.THEME_DARK:
+                return R.style.AppTheme_Toolbar_Dark;
+            case Settings.THEME_BLACK:
+                return R.style.AppTheme_Toolbar_Black;
+        }
+    }
+
     @Override
     public void setContentView(@LayoutRes int layoutResID) {
         super.setContentView(R.layout.activity_toolbar);