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Apply any theme change on return to MainActivity

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This commit is contained in:
Phillip Hsu 2016-09-20 03:51:30 -07:00
parent 980dc10d67
commit 690a7f3aa0
3 changed files with 64 additions and 1 deletions
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14
app/src/main/java/com/philliphsu/clock2/MainActivity.java
View File

@ -34,6 +34,8 @@ public class MainActivity extends BaseActivity {
public static final int PAGE_STOPWATCH = 2;
public static final String EXTRA_SHOW_PAGE = "com.philliphsu.clock2.extra.SHOW_PAGE";
public static final int REQUEST_THEME_CHANGE = 5;
/**
* The {@link android.support.v4.view.PagerAdapter} that will provide
* fragments for each of the sections. We use a
@ -253,6 +255,8 @@ public class MainActivity extends BaseActivity {
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode != RESULT_OK)
return;
// If we get here, either this Activity OR one of its hosted Fragments
// started a requested Activity for a result. The latter case may seem
// strange; the Fragment is the one starting the requested Activity, so why
@ -298,6 +302,14 @@ public class MainActivity extends BaseActivity {
// DUPLICATE TIMERS.
// mSectionsPagerAdapter.getFragment(mViewPager.getCurrentItem())
// .onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case REQUEST_THEME_CHANGE:
if (data != null && data.getBooleanExtra(SettingsActivity.EXTRA_THEME_CHANGED, false)) {
recreate();
}
break;
}
}
@Override
@ -324,7 +336,7 @@ public class MainActivity extends BaseActivity {
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
startActivity(new Intent(this, SettingsActivity.class));
startActivityForResult(new Intent(this, SettingsActivity.class), REQUEST_THEME_CHANGE);
return true;
}

1
app/src/main/java/com/philliphsu/clock2/settings/SettingsActivity.java
View File

@ -9,6 +9,7 @@ import com.philliphsu.clock2.R;
* Created by Phillip Hsu on 6/6/2016.
*/
public class SettingsActivity extends BaseActivity {
public static final String EXTRA_THEME_CHANGED = "com.philliphsu.clock2.settings.extra.THEME_CHANGED";
@Override
protected void onCreate(Bundle savedInstanceState) {

50
app/src/main/java/com/philliphsu/clock2/settings/SettingsFragment.java
View File

@ -1,6 +1,8 @@
package com.philliphsu.clock2.settings;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.media.AudioManager;
import android.media.Ringtone;
@ -9,17 +11,25 @@ import android.net.Uri;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceFragment;
import android.preference.PreferenceManager;
import android.preference.RingtonePreference;
import android.view.MenuItem;
import com.philliphsu.clock2.R;
public class SettingsFragment extends PreferenceFragment implements SharedPreferences.OnSharedPreferenceChangeListener {
private String mInitialTheme;
private SharedPreferences mPrefs;
public SettingsFragment() {}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// We don't have a menu, but this is needed so we can receive callbacks to the options menu.
// The only callback we are interested in is onOptionsItemSelected().
setHasOptionsMenu(true);
addPreferencesFromResource(R.xml.preferences);
// Set ringtone summary
setSummary(getPreferenceScreen().getSharedPreferences(), getString(R.string.key_timer_ringtone));
@ -35,6 +45,8 @@ public class SettingsFragment extends PreferenceFragment implements SharedPrefer
return true;
}
});
mPrefs = PreferenceManager.getDefaultSharedPreferences(getActivity());
mInitialTheme = mPrefs.getString(keyOfThemePreference(), "");
}
@Override
@ -51,9 +63,43 @@ public class SettingsFragment extends PreferenceFragment implements SharedPrefer
.unregisterOnSharedPreferenceChangeListener(this);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
/*
* https://developer.android.com/guide/topics/ui/menus.html#RespondingOptionsMenu
* "If your activity includes fragments, the system first calls onOptionsItemSelected()
* for the activity then for each fragment (in the order each fragment was added)
* until one returns true or all fragments have been called."
*/
switch (item.getItemId()) {
case android.R.id.home:
String selectedTheme = mPrefs.getString(keyOfThemePreference(), "");
Intent result = new Intent();
result.putExtra(SettingsActivity.EXTRA_THEME_CHANGED, !selectedTheme.equals(mInitialTheme));
getActivity().setResult(Activity.RESULT_OK, result);
return false; // Don't capture, proceed as usual
default:
return false;
}
}
@Override
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
setSummary(sharedPreferences, key);
// --------------------------------------------------------------------------------------
// TOneverDO
//
// A new instance of the activity would be created and onCreate() called again.
// Our reading of the initial theme for the previous instance, which would be destroyed,
// would not be retained.
// Reading the initial theme *for the new instance* would give us the theme
// that the previous instance had just changed to, prior to its recreate().
// As such, the result passed back *by the new instance* via the up button
// would always indicate the theme didn't change.
// if (key.equals(keyOfThemePreference())) {
// getActivity().recreate();
// }
// --------------------------------------------------------------------------------------
}
private void setSummary(SharedPreferences prefs, String key) {
@ -66,4 +112,8 @@ public class SettingsFragment extends PreferenceFragment implements SharedPrefer
pref.setSummary(ringtone.getTitle(getActivity()));
}
}
private String keyOfThemePreference() {
return getString(R.string.key_theme);
}
}