src/com/android/launcher3/SettingsActivity.java - platform/packages/apps/Launcher3 - Gitiles

 /*
  * Copyright (C) 2015 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package com.android.launcher3;

 import static com.android.launcher3.states.RotationHelper.ALLOW_ROTATION_PREFERENCE_KEY;
 import static com.android.launcher3.states.RotationHelper.getAllowRotationDefaultValue;

 import android.annotation.TargetApi;
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.app.Dialog;
 import android.app.DialogFragment;
 import android.app.FragmentManager;
 import android.content.ComponentName;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.os.Build;
 import android.os.Bundle;
 import android.preference.ListPreference;
 import android.preference.Preference;
 import android.preference.PreferenceFragment;
 import android.preference.PreferenceScreen;
 import android.provider.Settings;
 import android.text.TextUtils;
 import android.view.View;
 import android.widget.Adapter;
 import android.widget.ListView;

 import com.android.launcher3.graphics.IconShapeOverride;
 import com.android.launcher3.notification.NotificationListener;
 import com.android.launcher3.util.ListViewHighlighter;
 import com.android.launcher3.util.SettingsObserver;
 import com.android.launcher3.views.ButtonPreference;

 import java.util.Objects;

 /**
  * Settings activity for Launcher. Currently implements the following setting: Allow rotation
  */
 public class SettingsActivity extends Activity {

     private static final String ICON_BADGING_PREFERENCE_KEY = "pref_icon_badging";
     /** Hidden field Settings.Secure.NOTIFICATION_BADGING */
     public static final String NOTIFICATION_BADGING = "notification_badging";
     /** Hidden field Settings.Secure.ENABLED_NOTIFICATION_LISTENERS */
     private static final String NOTIFICATION_ENABLED_LISTENERS = "enabled_notification_listeners";

     private static final String EXTRA_FRAGMENT_ARG_KEY = ":settings:fragment_args_key";
     private static final String EXTRA_SHOW_FRAGMENT_ARGS = ":settings:show_fragment_args";
     private static final int DELAY_HIGHLIGHT_DURATION_MILLIS = 600;
     private static final String SAVE_HIGHLIGHTED_KEY = "android:preference_highlighted";

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);

         if (savedInstanceState == null) {
             // Display the fragment as the main content.
             getFragmentManager().beginTransaction()
                     .replace(android.R.id.content, getNewFragment())
                     .commit();
         }
     }

     protected PreferenceFragment getNewFragment() {
         return new LauncherSettingsFragment();
     }

     /**
      * This fragment shows the launcher preferences.
      */
     public static class LauncherSettingsFragment extends PreferenceFragment {

         private IconBadgingObserver mIconBadgingObserver;

         private String mPreferenceKey;
         private boolean mPreferenceHighlighted = false;

         @Override
         public void onCreate(Bundle savedInstanceState) {
             super.onCreate(savedInstanceState);
             if (savedInstanceState != null) {
                 mPreferenceHighlighted = savedInstanceState.getBoolean(SAVE_HIGHLIGHTED_KEY);
             }

             getPreferenceManager().setSharedPreferencesName(LauncherFiles.SHARED_PREFERENCES_KEY);
             addPreferencesFromResource(R.xml.launcher_preferences);

             ContentResolver resolver = getActivity().getContentResolver();

             ButtonPreference iconBadgingPref =
                     (ButtonPreference) findPreference(ICON_BADGING_PREFERENCE_KEY);
             if (!Utilities.ATLEAST_OREO) {
                 getPreferenceScreen().removePreference(
                         findPreference(SessionCommitReceiver.ADD_ICON_PREFERENCE_KEY));
                 getPreferenceScreen().removePreference(iconBadgingPref);
             } else if (!getResources().getBoolean(R.bool.notification_badging_enabled)) {
                 getPreferenceScreen().removePreference(iconBadgingPref);
             } else {
                 // Listen to system notification badge settings while this UI is active.
                 mIconBadgingObserver = new IconBadgingObserver(
                         iconBadgingPref, resolver, getFragmentManager());
                 mIconBadgingObserver.register(NOTIFICATION_BADGING, NOTIFICATION_ENABLED_LISTENERS);
             }

             Preference iconShapeOverride = findPreference(IconShapeOverride.KEY_PREFERENCE);
             if (iconShapeOverride != null) {
                 if (IconShapeOverride.isSupported(getActivity())) {
                     IconShapeOverride.handlePreferenceUi((ListPreference) iconShapeOverride);
                 } else {
                     getPreferenceScreen().removePreference(iconShapeOverride);
                 }
             }

             // Setup allow rotation preference
             Preference rotationPref = findPreference(ALLOW_ROTATION_PREFERENCE_KEY);
             if (getResources().getBoolean(R.bool.allow_rotation)) {
                 // Launcher supports rotation by default. No need to show this setting.
                 getPreferenceScreen().removePreference(rotationPref);
             } else {
                 // Initialize the UI once
                 rotationPref.setDefaultValue(getAllowRotationDefaultValue());
             }
         }

         @Override
         public void onSaveInstanceState(Bundle outState) {
             super.onSaveInstanceState(outState);
             outState.putBoolean(SAVE_HIGHLIGHTED_KEY, mPreferenceHighlighted);
         }

         @Override
         public void onResume() {
             super.onResume();

             Intent intent = getActivity().getIntent();
             mPreferenceKey = intent.getStringExtra(EXTRA_FRAGMENT_ARG_KEY);
             if (isAdded() && !mPreferenceHighlighted && !TextUtils.isEmpty(mPreferenceKey)) {
                 getView().postDelayed(this::highlightPreference, DELAY_HIGHLIGHT_DURATION_MILLIS);
             }
         }

         private void highlightPreference() {
             Preference pref = findPreference(mPreferenceKey);
             if (pref == null || getPreferenceScreen() == null) {
                 return;
             }
             PreferenceScreen screen = getPreferenceScreen();
             if (Utilities.ATLEAST_OREO) {
                 screen = selectPreferenceRecursive(pref, screen);
             }
             if (screen == null) {
                 return;
             }

             View root = screen.getDialog() != null
                     ? screen.getDialog().getWindow().getDecorView() : getView();
             ListView list = root.findViewById(android.R.id.list);
             if (list == null || list.getAdapter() == null) {
                 return;
             }
             Adapter adapter = list.getAdapter();

             // Find the position
             int position = -1;
             for (int i = adapter.getCount() - 1; i >= 0; i--) {
                 if (pref == adapter.getItem(i)) {
                     position = i;
                     break;
                 }
             }
             new ListViewHighlighter(list, position);
             mPreferenceHighlighted = true;
         }

         @Override
         public void onDestroy() {
             if (mIconBadgingObserver != null) {
                 mIconBadgingObserver.unregister();
                 mIconBadgingObserver = null;
             }
             super.onDestroy();
         }

         @TargetApi(Build.VERSION_CODES.O)
         private PreferenceScreen selectPreferenceRecursive(
                 Preference pref, PreferenceScreen topParent) {
             if (!(pref.getParent() instanceof PreferenceScreen)) {
                 return null;
             }

             PreferenceScreen parent = (PreferenceScreen) pref.getParent();
             if (Objects.equals(parent.getKey(), topParent.getKey())) {
                 return parent;
             } else if (selectPreferenceRecursive(parent, topParent) != null) {
                 ((PreferenceScreen) parent.getParent())
                         .onItemClick(null, null, parent.getOrder(), 0);
                 return parent;
             } else {
                 return null;
             }
         }
     }

     /**
      * Content observer which listens for system badging setting changes,
      * and updates the launcher badging setting subtext accordingly.
      */
     private static class IconBadgingObserver extends SettingsObserver.Secure
             implements Preference.OnPreferenceClickListener {

         private final ButtonPreference mBadgingPref;
         private final ContentResolver mResolver;
         private final FragmentManager mFragmentManager;

         public IconBadgingObserver(ButtonPreference badgingPref, ContentResolver resolver,
                 FragmentManager fragmentManager) {
             super(resolver);
             mBadgingPref = badgingPref;
             mResolver = resolver;
             mFragmentManager = fragmentManager;
         }

         @Override
         public void onSettingChanged(boolean enabled) {
             int summary = enabled ? R.string.icon_badging_desc_on : R.string.icon_badging_desc_off;

             boolean serviceEnabled = true;
             if (enabled) {
                 // Check if the listener is enabled or not.
                 String enabledListeners =
                         Settings.Secure.getString(mResolver, NOTIFICATION_ENABLED_LISTENERS);
                 ComponentName myListener =
                         new ComponentName(mBadgingPref.getContext(), NotificationListener.class);
                 serviceEnabled = enabledListeners != null &&
                         (enabledListeners.contains(myListener.flattenToString()) ||
                                 enabledListeners.contains(myListener.flattenToShortString()));
                 if (!serviceEnabled) {
                     summary = R.string.title_missing_notification_access;
                 }
             }
             mBadgingPref.setWidgetFrameVisible(!serviceEnabled);
             mBadgingPref.setOnPreferenceClickListener(serviceEnabled ? null : this);
             mBadgingPref.setSummary(summary);

         }

         @Override
         public boolean onPreferenceClick(Preference preference) {
             new NotificationAccessConfirmation().show(mFragmentManager, "notification_access");
             return true;
         }
     }

     public static class NotificationAccessConfirmation
             extends DialogFragment implements DialogInterface.OnClickListener {

         @Override
         public Dialog onCreateDialog(Bundle savedInstanceState) {
             final Context context = getActivity();
             String msg = context.getString(R.string.msg_missing_notification_access,
                     context.getString(R.string.derived_app_name));
             return new AlertDialog.Builder(context)
                     .setTitle(R.string.title_missing_notification_access)
                     .setMessage(msg)
                     .setNegativeButton(android.R.string.cancel, null)
                     .setPositiveButton(R.string.title_change_settings, this)
                     .create();
         }

         @Override
         public void onClick(DialogInterface dialogInterface, int i) {
             ComponentName cn = new ComponentName(getActivity(), NotificationListener.class);
             Bundle showFragmentArgs = new Bundle();
             showFragmentArgs.putString(EXTRA_FRAGMENT_ARG_KEY, cn.flattenToString());

             Intent intent = new Intent(Settings.ACTION_NOTIFICATION_LISTENER_SETTINGS)
                     .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
                     .putExtra(EXTRA_FRAGMENT_ARG_KEY, cn.flattenToString())
                     .putExtra(EXTRA_SHOW_FRAGMENT_ARGS, showFragmentArgs);
             getActivity().startActivity(intent);
         }
     }
 }
	/*
	* Copyright (C) 2015 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package com.android.launcher3;

	import static com.android.launcher3.states.RotationHelper.ALLOW_ROTATION_PREFERENCE_KEY;
	import static com.android.launcher3.states.RotationHelper.getAllowRotationDefaultValue;

	import android.annotation.TargetApi;
	import android.app.Activity;
	import android.app.AlertDialog;
	import android.app.Dialog;
	import android.app.DialogFragment;
	import android.app.FragmentManager;
	import android.content.ComponentName;
	import android.content.ContentResolver;
	import android.content.Context;
	import android.content.DialogInterface;
	import android.content.Intent;
	import android.os.Build;
	import android.os.Bundle;
	import android.preference.ListPreference;
	import android.preference.Preference;
	import android.preference.PreferenceFragment;
	import android.preference.PreferenceScreen;
	import android.provider.Settings;
	import android.text.TextUtils;
	import android.view.View;
	import android.widget.Adapter;
	import android.widget.ListView;

	import com.android.launcher3.graphics.IconShapeOverride;
	import com.android.launcher3.notification.NotificationListener;
	import com.android.launcher3.util.ListViewHighlighter;
	import com.android.launcher3.util.SettingsObserver;
	import com.android.launcher3.views.ButtonPreference;

	import java.util.Objects;

	/**
	* Settings activity for Launcher. Currently implements the following setting: Allow rotation
	*/
	public class SettingsActivity extends Activity {

	private static final String ICON_BADGING_PREFERENCE_KEY = "pref_icon_badging";
	/** Hidden field Settings.Secure.NOTIFICATION_BADGING */
	public static final String NOTIFICATION_BADGING = "notification_badging";
	/** Hidden field Settings.Secure.ENABLED_NOTIFICATION_LISTENERS */
	private static final String NOTIFICATION_ENABLED_LISTENERS = "enabled_notification_listeners";

	private static final String EXTRA_FRAGMENT_ARG_KEY = ":settings:fragment_args_key";
	private static final String EXTRA_SHOW_FRAGMENT_ARGS = ":settings:show_fragment_args";
	private static final int DELAY_HIGHLIGHT_DURATION_MILLIS = 600;
	private static final String SAVE_HIGHLIGHTED_KEY = "android:preference_highlighted";

	@Override
	protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);

	if (savedInstanceState == null) {
	// Display the fragment as the main content.
	getFragmentManager().beginTransaction()
	.replace(android.R.id.content, getNewFragment())
	.commit();
	}
	}

	protected PreferenceFragment getNewFragment() {
	return new LauncherSettingsFragment();
	}

	/**
	* This fragment shows the launcher preferences.
	*/
	public static class LauncherSettingsFragment extends PreferenceFragment {

	private IconBadgingObserver mIconBadgingObserver;

	private String mPreferenceKey;
	private boolean mPreferenceHighlighted = false;

	@Override
	public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	if (savedInstanceState != null) {
	mPreferenceHighlighted = savedInstanceState.getBoolean(SAVE_HIGHLIGHTED_KEY);
	}

	getPreferenceManager().setSharedPreferencesName(LauncherFiles.SHARED_PREFERENCES_KEY);
	addPreferencesFromResource(R.xml.launcher_preferences);

	ContentResolver resolver = getActivity().getContentResolver();

	ButtonPreference iconBadgingPref =
	(ButtonPreference) findPreference(ICON_BADGING_PREFERENCE_KEY);
	if (!Utilities.ATLEAST_OREO) {
	getPreferenceScreen().removePreference(
	findPreference(SessionCommitReceiver.ADD_ICON_PREFERENCE_KEY));
	getPreferenceScreen().removePreference(iconBadgingPref);
	} else if (!getResources().getBoolean(R.bool.notification_badging_enabled)) {
	getPreferenceScreen().removePreference(iconBadgingPref);
	} else {
	// Listen to system notification badge settings while this UI is active.
	mIconBadgingObserver = new IconBadgingObserver(
	iconBadgingPref, resolver, getFragmentManager());
	mIconBadgingObserver.register(NOTIFICATION_BADGING, NOTIFICATION_ENABLED_LISTENERS);
	}

	Preference iconShapeOverride = findPreference(IconShapeOverride.KEY_PREFERENCE);
	if (iconShapeOverride != null) {
	if (IconShapeOverride.isSupported(getActivity())) {
	IconShapeOverride.handlePreferenceUi((ListPreference) iconShapeOverride);
	} else {
	getPreferenceScreen().removePreference(iconShapeOverride);
	}
	}

	// Setup allow rotation preference
	Preference rotationPref = findPreference(ALLOW_ROTATION_PREFERENCE_KEY);
	if (getResources().getBoolean(R.bool.allow_rotation)) {
	// Launcher supports rotation by default. No need to show this setting.
	getPreferenceScreen().removePreference(rotationPref);
	} else {
	// Initialize the UI once
	rotationPref.setDefaultValue(getAllowRotationDefaultValue());
	}
	}

	@Override
	public void onSaveInstanceState(Bundle outState) {
	super.onSaveInstanceState(outState);
	outState.putBoolean(SAVE_HIGHLIGHTED_KEY, mPreferenceHighlighted);
	}

	@Override
	public void onResume() {
	super.onResume();

	Intent intent = getActivity().getIntent();
	mPreferenceKey = intent.getStringExtra(EXTRA_FRAGMENT_ARG_KEY);
	if (isAdded() && !mPreferenceHighlighted && !TextUtils.isEmpty(mPreferenceKey)) {
	getView().postDelayed(this::highlightPreference, DELAY_HIGHLIGHT_DURATION_MILLIS);
	}
	}

	private void highlightPreference() {
	Preference pref = findPreference(mPreferenceKey);
	if (pref == null \|\| getPreferenceScreen() == null) {
	return;
	}
	PreferenceScreen screen = getPreferenceScreen();
	if (Utilities.ATLEAST_OREO) {
	screen = selectPreferenceRecursive(pref, screen);
	}
	if (screen == null) {
	return;
	}

	View root = screen.getDialog() != null
	? screen.getDialog().getWindow().getDecorView() : getView();
	ListView list = root.findViewById(android.R.id.list);
	if (list == null \|\| list.getAdapter() == null) {
	return;
	}
	Adapter adapter = list.getAdapter();

	// Find the position
	int position = -1;
	for (int i = adapter.getCount() - 1; i >= 0; i--) {
	if (pref == adapter.getItem(i)) {
	position = i;
	break;
	}
	}
	new ListViewHighlighter(list, position);
	mPreferenceHighlighted = true;
	}

	@Override
	public void onDestroy() {
	if (mIconBadgingObserver != null) {
	mIconBadgingObserver.unregister();
	mIconBadgingObserver = null;
	}
	super.onDestroy();
	}

	@TargetApi(Build.VERSION_CODES.O)
	private PreferenceScreen selectPreferenceRecursive(
	Preference pref, PreferenceScreen topParent) {
	if (!(pref.getParent() instanceof PreferenceScreen)) {
	return null;
	}

	PreferenceScreen parent = (PreferenceScreen) pref.getParent();
	if (Objects.equals(parent.getKey(), topParent.getKey())) {
	return parent;
	} else if (selectPreferenceRecursive(parent, topParent) != null) {
	((PreferenceScreen) parent.getParent())
	.onItemClick(null, null, parent.getOrder(), 0);
	return parent;
	} else {
	return null;
	}
	}
	}

	/**
	* Content observer which listens for system badging setting changes,
	* and updates the launcher badging setting subtext accordingly.
	*/
	private static class IconBadgingObserver extends SettingsObserver.Secure
	implements Preference.OnPreferenceClickListener {

	private final ButtonPreference mBadgingPref;
	private final ContentResolver mResolver;
	private final FragmentManager mFragmentManager;

	public IconBadgingObserver(ButtonPreference badgingPref, ContentResolver resolver,
	FragmentManager fragmentManager) {
	super(resolver);
	mBadgingPref = badgingPref;
	mResolver = resolver;
	mFragmentManager = fragmentManager;
	}

	@Override
	public void onSettingChanged(boolean enabled) {
	int summary = enabled ? R.string.icon_badging_desc_on : R.string.icon_badging_desc_off;

	boolean serviceEnabled = true;
	if (enabled) {
	// Check if the listener is enabled or not.
	String enabledListeners =
	Settings.Secure.getString(mResolver, NOTIFICATION_ENABLED_LISTENERS);
	ComponentName myListener =
	new ComponentName(mBadgingPref.getContext(), NotificationListener.class);
	serviceEnabled = enabledListeners != null &&
	(enabledListeners.contains(myListener.flattenToString()) \|\|
	enabledListeners.contains(myListener.flattenToShortString()));
	if (!serviceEnabled) {
	summary = R.string.title_missing_notification_access;
	}
	}
	mBadgingPref.setWidgetFrameVisible(!serviceEnabled);
	mBadgingPref.setOnPreferenceClickListener(serviceEnabled ? null : this);
	mBadgingPref.setSummary(summary);

	}

	@Override
	public boolean onPreferenceClick(Preference preference) {
	new NotificationAccessConfirmation().show(mFragmentManager, "notification_access");
	return true;
	}
	}

	public static class NotificationAccessConfirmation
	extends DialogFragment implements DialogInterface.OnClickListener {

	@Override
	public Dialog onCreateDialog(Bundle savedInstanceState) {
	final Context context = getActivity();
	String msg = context.getString(R.string.msg_missing_notification_access,
	context.getString(R.string.derived_app_name));
	return new AlertDialog.Builder(context)
	.setTitle(R.string.title_missing_notification_access)
	.setMessage(msg)
	.setNegativeButton(android.R.string.cancel, null)
	.setPositiveButton(R.string.title_change_settings, this)
	.create();
	}

	@Override
	public void onClick(DialogInterface dialogInterface, int i) {
	ComponentName cn = new ComponentName(getActivity(), NotificationListener.class);
	Bundle showFragmentArgs = new Bundle();
	showFragmentArgs.putString(EXTRA_FRAGMENT_ARG_KEY, cn.flattenToString());

	Intent intent = new Intent(Settings.ACTION_NOTIFICATION_LISTENER_SETTINGS)
	.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
	.putExtra(EXTRA_FRAGMENT_ARG_KEY, cn.flattenToString())
	.putExtra(EXTRA_SHOW_FRAGMENT_ARGS, showFragmentArgs);
	getActivity().startActivity(intent);
	}
	}
	}