Andy Wickham
3e34dd3791
This is used to step through the "happy path" of the existing back tutorial steps (right edge and left edge). Unlike in the Pixel Tips app, the tutorial only continues if you perform the gesture from the correct edge of the screen. This also lays the groundwork to provide helpful tips if the expected gesture is performed incorrectly, although currently such gestures are just ignored. Demo: https://drive.google.com/open?id=12S42mZQITGzIWnj7mP1L__PCOgAQcjgp Bug: 148542211 Change-Id: Ib2e0b2ff7c021db48c96d58e1370fa2e93330912
85 lines
3.1 KiB
Java
85 lines
3.1 KiB
Java
/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.launcher3.util;
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import static android.os.VibrationEffect.createPredefined;
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import static android.provider.Settings.System.HAPTIC_FEEDBACK_ENABLED;
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import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
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import static com.android.launcher3.util.Executors.UI_HELPER_EXECUTOR;
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import android.annotation.TargetApi;
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import android.content.ContentResolver;
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import android.content.Context;
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import android.database.ContentObserver;
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import android.os.Build;
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import android.os.VibrationEffect;
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import android.os.Vibrator;
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import android.provider.Settings;
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/**
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* Wrapper around {@link Vibrator} to easily perform haptic feedback where necessary.
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*/
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@TargetApi(Build.VERSION_CODES.Q)
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public class VibratorWrapper {
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public static final MainThreadInitializedObject<VibratorWrapper> INSTANCE =
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new MainThreadInitializedObject<>(VibratorWrapper::new);
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public static final VibrationEffect EFFECT_CLICK =
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createPredefined(VibrationEffect.EFFECT_CLICK);
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/**
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* Haptic when entering overview.
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*/
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public static final VibrationEffect OVERVIEW_HAPTIC = EFFECT_CLICK;
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private final Vibrator mVibrator;
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private final boolean mHasVibrator;
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private boolean mIsHapticFeedbackEnabled;
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public VibratorWrapper(Context context) {
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mVibrator = context.getSystemService(Vibrator.class);
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mHasVibrator = mVibrator.hasVibrator();
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if (mHasVibrator) {
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final ContentResolver resolver = context.getContentResolver();
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mIsHapticFeedbackEnabled = isHapticFeedbackEnabled(resolver);
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final ContentObserver observer = new ContentObserver(MAIN_EXECUTOR.getHandler()) {
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@Override
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public void onChange(boolean selfChange) {
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mIsHapticFeedbackEnabled = isHapticFeedbackEnabled(resolver);
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}
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};
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resolver.registerContentObserver(Settings.System.getUriFor(HAPTIC_FEEDBACK_ENABLED),
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false /* notifyForDescendents */, observer);
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} else {
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mIsHapticFeedbackEnabled = false;
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}
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}
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private boolean isHapticFeedbackEnabled(ContentResolver resolver) {
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return Settings.System.getInt(resolver, HAPTIC_FEEDBACK_ENABLED, 0) == 1;
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}
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/** Vibrates with the given effect if haptic feedback is available and enabled. */
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public void vibrate(VibrationEffect vibrationEffect) {
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if (mHasVibrator && mIsHapticFeedbackEnabled) {
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UI_HELPER_EXECUTOR.execute(() -> mVibrator.vibrate(vibrationEffect));
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}
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}
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}
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