chinwag-android/app/src/main/java/com/keylesspalace/tusky/PreferencesActivity.java

90 lines
3.5 KiB
Java
Raw Normal View History

/* Copyright 2017 Andrew Dawson
*
* This file is part of Tusky.
*
* Tusky is free software: you can redistribute it and/or modify it under the terms of the GNU
* General Public License as published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*
* You should have received a copy of the GNU General Public License along with Tusky. If not, see
* <http://www.gnu.org/licenses/>. */
package com.keylesspalace.tusky;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
public class PreferencesActivity extends AppCompatActivity
implements SharedPreferences.OnSharedPreferenceChangeListener {
private boolean themeSwitched;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (savedInstanceState != null) {
themeSwitched = savedInstanceState.getBoolean("themeSwitched");
} else {
Bundle extras = getIntent().getExtras();
themeSwitched = extras != null && extras.getBoolean("themeSwitched");
}
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
if (preferences.getBoolean("lightTheme", false)) {
setTheme(R.style.AppTheme_Light);
}
preferences.registerOnSharedPreferenceChangeListener(this);
getFragmentManager().beginTransaction()
.replace(android.R.id.content, new PreferencesFragment())
.commit();
}
private void saveInstanceState(Bundle outState) {
outState.putBoolean("themeSwitched", themeSwitched);
}
@Override
protected void onSaveInstanceState(Bundle outState) {
saveInstanceState(outState);
super.onSaveInstanceState(outState);
}
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
if (key.equals("lightTheme")) {
themeSwitched = true;
// recreate() could be used instead, but it doesn't have an animation B).
Intent intent = getIntent();
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
Bundle savedInstanceState = new Bundle();
saveInstanceState(savedInstanceState);
intent.putExtras(savedInstanceState);
startActivity(intent);
finish();
overridePendingTransition(R.anim.fade_in, R.anim.fade_out);
}
}
@Override
public void onBackPressed() {
/* Switching themes won't actually change the theme of activities on the back stack.
* Either the back stack activities need to all be recreated, or do the easier thing, which
* is hijack the back button press and use it to launch a new MainActivity and clear the
* back stack. */
if (themeSwitched) {
Intent intent = new Intent(this, MainActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(intent);
} else {
super.onBackPressed();
}
}
}