85 lines
2.6 KiB
Java
85 lines
2.6 KiB
Java
package de.vanitasvitae.slam.activity.abstr;
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import android.annotation.SuppressLint;
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import android.content.Intent;
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import android.content.SharedPreferences;
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import android.os.Bundle;
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import android.preference.PreferenceManager;
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import android.support.v7.app.AppCompatActivity;
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import android.view.MenuItem;
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import java.util.Arrays;
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import de.vanitasvitae.slam.R;
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/**
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* AppCompatActivity that can easily be themed.
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*/
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public abstract class ThemedAppCompatActivity extends AppCompatActivity implements SharedPreferences.OnSharedPreferenceChangeListener {
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public static final String PREF_APP_THEME = "pref_app_theme";
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private static final String THEME_LIGHT = "defaultTheme";
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private static final String THEME_DARK = "darkTheme";
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private SharedPreferences preferences;
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@SuppressLint("ApplySharedPref")
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protected void onCreate(Bundle savedInstanceState) {
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preferences = PreferenceManager.getDefaultSharedPreferences(this);
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String theme = preferences.getString(PREF_APP_THEME, THEME_LIGHT);
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switch (theme) {
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case THEME_DARK:
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setTheme(R.style.Slam_Dark);
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break;
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// add more themes here...
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default:
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setTheme(R.style.Slam);
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}
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super.onCreate(savedInstanceState);
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}
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@Override
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protected void onPause() {
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preferences.unregisterOnSharedPreferenceChangeListener(this);
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super.onPause();
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}
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protected void onResume() {
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preferences.registerOnSharedPreferenceChangeListener(this);
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super.onResume();
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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switch (item.getItemId()) {
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case R.id.debug_switch_theme:
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toggleTheme();
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return true;
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}
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return super.onOptionsItemSelected(item);
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}
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public void toggleTheme() {
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// ...and here
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String[] themes = new String[]{THEME_LIGHT, THEME_DARK};
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SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(this);
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String current = pref.getString(PREF_APP_THEME, THEME_LIGHT);
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int index = Arrays.asList(themes).indexOf(current);
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String next = themes[(index + 1) % themes.length];
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pref.edit().putString(PREF_APP_THEME, next).apply();
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}
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@Override
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public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
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if (key.equals(PREF_APP_THEME)) {
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finish();
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final Intent intent = getIntent();
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intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);
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startActivity(intent);
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}
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}
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}
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