diff --git a/res/values/strings.xml b/res/values/strings.xml
index e0c5d5d33e1..847335750f8 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -2752,6 +2752,10 @@
Smooth Display
Automatically raises the refresh rate from 60 to 90 Hz for some content. Increases battery usage.
+
+ Smooth Display
+
+ Highest refresh rate for improved touch responsiveness & animation quality. Increases battery usage.
Screen attention
diff --git a/res/xml/development_settings.xml b/res/xml/development_settings.xml
index e8605894f6d..746a51c4b9d 100644
--- a/res/xml/development_settings.xml
+++ b/res/xml/development_settings.xml
@@ -256,6 +256,11 @@
android:title="@string/overlay_settings_title"
android:summary="@string/overlay_settings_summary" />
+
+
DEFAULT_REFRESH_RATE;
+ } else {
+ return false;
+ }
+ }
+
+ @Override
+ protected void onDeveloperOptionsSwitchDisabled() {
+ super.onDeveloperOptionsSwitchDisabled();
+ Settings.System.putFloat(mContext.getContentResolver(),
+ Settings.System.MIN_REFRESH_RATE, NO_CONFIG);
+
+ ((SwitchPreference) mPreference).setChecked(false);
+ }
+
+ @VisibleForTesting
+ void forcePeakRefreshRate(boolean enable) {
+ final float peakRefreshRate = enable ? mPeakRefreshRate : NO_CONFIG;
+ Settings.System.putFloat(mContext.getContentResolver(),
+ Settings.System.MIN_REFRESH_RATE, peakRefreshRate);
+ }
+
+ boolean isForcePeakRefreshRateEnabled() {
+ final float peakRefreshRate = Settings.System.getFloat(mContext.getContentResolver(),
+ Settings.System.MIN_REFRESH_RATE, NO_CONFIG);
+
+ return peakRefreshRate >= mPeakRefreshRate;
+ }
+
+ private float findPeakRefreshRate(Display.Mode[] modes) {
+ float peakRefreshRate = DEFAULT_REFRESH_RATE;
+ for (Display.Mode mode : modes) {
+ if (Math.round(mode.getRefreshRate()) > DEFAULT_REFRESH_RATE) {
+ peakRefreshRate = mode.getRefreshRate();
+ }
+ }
+
+ return peakRefreshRate;
+ }
+}
diff --git a/tests/robotests/src/com/android/settings/development/ForcePeakRefreshRatePreferenceControllerTest.java b/tests/robotests/src/com/android/settings/development/ForcePeakRefreshRatePreferenceControllerTest.java
new file mode 100644
index 00000000000..2e93d5ef9ca
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/development/ForcePeakRefreshRatePreferenceControllerTest.java
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2020 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.settings.development;
+
+import static com.android.settings.development.ForcePeakRefreshRatePreferenceController.DEFAULT_REFRESH_RATE;
+import static com.android.settings.development.ForcePeakRefreshRatePreferenceController.NO_CONFIG;
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.provider.Settings;
+
+import androidx.preference.PreferenceScreen;
+import androidx.preference.SwitchPreference;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+
+import android.util.Log;
+
+@RunWith(RobolectricTestRunner.class)
+public class ForcePeakRefreshRatePreferenceControllerTest {
+
+ @Mock
+ private SwitchPreference mPreference;
+ @Mock
+ private PreferenceScreen mScreen;
+
+ private Context mContext;
+ private ForcePeakRefreshRatePreferenceController mController;
+
+ @Before
+ public void setUp() {
+ MockitoAnnotations.initMocks(this);
+ mContext = RuntimeEnvironment.application;
+ mController = new ForcePeakRefreshRatePreferenceController(mContext);
+ when(mScreen.findPreference(mController.getPreferenceKey())).thenReturn(mPreference);
+ when(mPreference.getKey()).thenReturn(mController.getPreferenceKey());
+ mController.displayPreference(mScreen);
+ }
+
+ @Test
+ public void onPreferenceChange_preferenceChecked_shouldEnableForcePeak() {
+ mController.mPeakRefreshRate = 88f;
+
+ mController.onPreferenceChange(mPreference, true);
+
+ assertThat(Settings.System.getFloat(mContext.getContentResolver(),
+ Settings.System.MIN_REFRESH_RATE, NO_CONFIG)).isEqualTo(88f);
+ }
+
+ @Test
+ public void onPreferenceChange_preferenceUnchecked_shouldDisableForcePeak() {
+ mController.mPeakRefreshRate = 88f;
+
+ mController.onPreferenceChange(mPreference, false);
+
+ assertThat(Settings.System.getFloat(mContext.getContentResolver(),
+ Settings.System.MIN_REFRESH_RATE, NO_CONFIG)).isEqualTo(NO_CONFIG);
+ }
+
+ @Test
+ public void updateState_enableForcePeak_shouldCheckedToggle() {
+ mController.mPeakRefreshRate = 88f;
+ mController.forcePeakRefreshRate(true);
+
+ mController.updateState(mPreference);
+
+ verify(mPreference).setChecked(true);
+ }
+
+ @Test
+ public void updateState_disableForcePeak_shouldUncheckedToggle() {
+ mController.mPeakRefreshRate = 88f;
+ mController.forcePeakRefreshRate(false);
+
+ mController.updateState(mPreference);
+
+ verify(mPreference).setChecked(false);
+ }
+
+ @Test
+ @Config(qualifiers = "mcc999")
+ public void isAvailable_withConfigNoShow_returnUnsupported() {
+ assertThat(mController.isAvailable()).isFalse();
+ }
+
+ @Test
+ public void isAvailable_refreshRateLargerThanDefault_returnTrue() {
+ mController.mPeakRefreshRate = DEFAULT_REFRESH_RATE + 1;
+
+ assertThat(mController.isAvailable()).isTrue();
+ }
+
+ @Test
+ public void getAvailabilityStatus_refreshRateEqualToDefault_returnFalse() {
+ mController.mPeakRefreshRate = DEFAULT_REFRESH_RATE;
+
+ assertThat(mController.isAvailable()).isFalse();
+ }
+
+ @Test
+ public void onDeveloperOptionsDisabled_shouldDisablePreference() {
+ mController.onDeveloperOptionsSwitchDisabled();
+
+ assertThat(Settings.System.getFloat(mContext.getContentResolver(),
+ Settings.System.MIN_REFRESH_RATE, -1f)).isEqualTo(NO_CONFIG);
+ assertThat(mPreference.isChecked()).isFalse();
+ assertThat(mPreference.isEnabled()).isFalse();
+ }
+}