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Fixed an issue where GONE Views would show during transitions

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Because we're clipping children and MotionLayout doesn't hide them
when collapsed, views could flicker onto the screen

Test: add media notification, swipe down to shade and back, observe no flickering
Bug: 154137987
Change-Id: Ida591706e779215e13c6d3047be7e3b5318b4d19
This commit is contained in:
Selim Cinek
2020-05-01 21:11:13 -07:00
parent b28ec0a32f
commit 8081f0940f
3 changed files with 73 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
packages/SystemUI/res/xml/media_scene.xml
View File

@@ -356,6 +356,7 @@
android:id="@+id/media_progress_bar"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:alpha="0.0"
app:layout_constraintTop_toBottomOf="@id/album_art"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="@id/view_width"
@@ -364,6 +365,7 @@
<Constraint
android:id="@+id/notification_media_progress_time"
android:alpha="0.0"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="35dp"

52
packages/SystemUI/src/com/android/systemui/media/GoneChildrenHideHelper.kt Normal file
View File

@@ -0,0 +1,52 @@
/*
* 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.systemui.media
import android.graphics.Rect
import android.view.View
import android.view.ViewGroup
private val EMPTY_RECT = Rect(0,0,0,0)
private val LAYOUT_CHANGE_LISTENER = object : View.OnLayoutChangeListener {
override fun onLayoutChange(v: View?, left: Int, top: Int, right: Int, bottom: Int,
oldLeft: Int, oldTop: Int, oldRight: Int, oldBottom: Int) {
v?.let {
if (v.visibility == View.GONE) {
v.clipBounds = EMPTY_RECT
} else {
v.clipBounds = null
}
}
}
}
/**
* A helper class that clips all GONE children. Useful for transitions in motionlayout which
* don't clip its children.
*/
class GoneChildrenHideHelper private constructor() {
companion object {
@JvmStatic
fun clipGoneChildrenOnLayout(layout: ViewGroup) {
val childCount = layout.childCount
for (i in 0 until childCount) {
val child = layout.getChildAt(i)
child.addOnLayoutChangeListener(LAYOUT_CHANGE_LISTENER)
}
}
}
}

32
packages/SystemUI/src/com/android/systemui/media/MediaControlPanel.java
View File

@@ -36,7 +36,6 @@ import android.media.session.MediaController.PlaybackInfo;
import android.media.session.MediaSession;
import android.media.session.PlaybackState;
import android.service.media.MediaBrowserService;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
@@ -181,6 +180,7 @@ public class MediaControlPanel {
mMediaNotifView = (MotionLayout) inflater.inflate(R.layout.qs_media_panel, parent, false);
mBackground = mMediaNotifView.findViewById(R.id.media_background);
mLayoutAnimationHelper = new LayoutAnimationHelper(mMediaNotifView);
GoneChildrenHideHelper.clipGoneChildrenOnLayout(mMediaNotifView);
mKeyFrames = mMediaNotifView.getDefinedTransitions().get(0).getKeyFrameList();
mLocalMediaManager = routeManager;
mForegroundExecutor = foregroundExecutor;
@@ -255,6 +255,9 @@ public class MediaControlPanel {
mController = new MediaController(mContext, mToken);
ConstraintSet expandedSet = mMediaNotifView.getConstraintSet(R.id.expanded);
ConstraintSet collapsedSet = mMediaNotifView.getConstraintSet(R.id.collapsed);
// Try to find a browser service component for this app
// TODO also check for a media button receiver intended for restarting (b/154127084)
// Only check if we haven't tried yet or the session token changed
@@ -323,6 +326,8 @@ public class MediaControlPanel {
if (mSeamless != null) {
if (mLocalMediaManager != null) {
mSeamless.setVisibility(View.VISIBLE);
setVisibleAndAlpha(collapsedSet, R.id.media_seamless, true /*visible */);
setVisibleAndAlpha(expandedSet, R.id.media_seamless, true /*visible */);
updateDevice(mLocalMediaManager.getCurrentConnectedDevice());
mSeamless.setOnClickListener(v -> {
final Intent intent = new Intent()
@@ -344,9 +349,6 @@ public class MediaControlPanel {
Log.d(TAG, "PlaybackInfo was null. Defaulting to local playback.");
mIsRemotePlayback = false;
}
ConstraintSet expandedSet = mMediaNotifView.getConstraintSet(R.id.expanded);
ConstraintSet collapsedSet = mMediaNotifView.getConstraintSet(R.id.collapsed);
List<Integer> actionsWhenCollapsed = data.getActionsToShowInCompact();
// Media controls
int i = 0;
@@ -376,15 +378,14 @@ public class MediaControlPanel {
});
boolean visibleInCompat = actionsWhenCollapsed.contains(i);
updateKeyFrameVisibility(actionId, visibleInCompat);
collapsedSet.setVisibility(actionId,
visibleInCompat ? ConstraintSet.VISIBLE : ConstraintSet.GONE);
expandedSet.setVisibility(actionId, ConstraintSet.VISIBLE);
setVisibleAndAlpha(collapsedSet, actionId, visibleInCompat);
setVisibleAndAlpha(expandedSet, actionId, true /*visible */);
}
// Hide any unused buttons
for (; i < ACTION_IDS.length; i++) {
expandedSet.setVisibility(ACTION_IDS[i], ConstraintSet.GONE);
collapsedSet.setVisibility(ACTION_IDS[i], ConstraintSet.GONE);
setVisibleAndAlpha(expandedSet, ACTION_IDS[i], false /*visible */);
setVisibleAndAlpha(collapsedSet, ACTION_IDS[i], false /*visible */);
}
// Seek Bar
@@ -604,8 +605,8 @@ public class MediaControlPanel {
ConstraintSet expandedSet = mMediaNotifView.getConstraintSet(R.id.expanded);
ConstraintSet collapsedSet = mMediaNotifView.getConstraintSet(R.id.collapsed);
for (int i = 1; i < ACTION_IDS.length; i++) {
expandedSet.setVisibility(ACTION_IDS[i], ConstraintSet.GONE);
collapsedSet.setVisibility(ACTION_IDS[i], ConstraintSet.GONE);
setVisibleAndAlpha(expandedSet, ACTION_IDS[i], false /*visible */);
setVisibleAndAlpha(collapsedSet, ACTION_IDS[i], false /*visible */);
}
// Add a restart button
@@ -631,8 +632,8 @@ public class MediaControlPanel {
});
btn.setImageDrawable(mContext.getResources().getDrawable(R.drawable.lb_ic_play));
btn.setImageTintList(ColorStateList.valueOf(mForegroundColor));
expandedSet.setVisibility(ACTION_IDS[0], ConstraintSet.VISIBLE);
collapsedSet.setVisibility(ACTION_IDS[0], ConstraintSet.VISIBLE);
setVisibleAndAlpha(expandedSet, ACTION_IDS[0], true /*visible */);
setVisibleAndAlpha(collapsedSet, ACTION_IDS[0], true /*visible */);
mSeekBarViewModel.clearController();
// TODO: fix guts
@@ -647,6 +648,11 @@ public class MediaControlPanel {
});
}
private void setVisibleAndAlpha(ConstraintSet set, int actionId, boolean visible) {
set.setVisibility(actionId, visible? ConstraintSet.VISIBLE : ConstraintSet.GONE);
set.setAlpha(actionId, visible ? 1.0f : 0.0f);
}
private void makeActive() {
Assert.isMainThread();
if (!mIsRegistered) {