桌面长按显示taskbar和上滑显示taskbar

已于 2025-03-12 09:17:57 修改
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文章标签： android
于 2025-03-11 14:33:33 首次发布
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本文链接：https://blog.youkuaiyun.com/cmlsky2009/article/details/146178182

桌面taskbar 上滑、 长按

手势导航下判断是否是上滑显示taskbar还是固定显示taskbar，主要受SharedPreferences TASKBAR_PINNING对应的值影响

mIsTaskbarPinned = LauncherPrefs.get(displayInfoContext).get(TASKBAR_PINNING);// taskbar是否固定显示，为false则是上滑显示清扫，为true则是长按底部边缘

com/android/launcher3/util/DisplayController.java

public boolean isTransientTaskbar() {
    if (navigationMode != NavigationMode.NO_BUTTON) { // 判断是否是手势导航
        return false;
    }
    if (Utilities.isRunningInTestHarness()) {
        // TODO(b/258604917): Once ENABLE_TASKBAR_PINNING is enabled, remove usage of
        //  sTransientTaskbarStatusForTests and update test to directly
        //  toggle shared preference to switch transient taskbar on/off.
        return sTransientTaskbarStatusForTests;
    }
    if (enableTaskbarPinning()) {
        if (mIsInDesktopMode) {
            return !mIsTaskbarPinnedInDesktopMode;
        }
        return !mIsTaskbarPinned; // 判断taskbar是否是固定显示的
    }
    return true;
}
1、长按小白条弹出taskbar，固定显示taskbar

quickstep/src/com/android/quickstep/inputconsumers/TaskbarUnstashInputConsumer.java

@Override
public void onMotionEvent(MotionEvent ev) {
    mLongPressDetector.onTouchEvent(ev);
 .............
}

mLongPressDetector = new GestureDetector(context, new SimpleOnGestureListener() {
    @Override
    public void onLongPress(MotionEvent motionEvent) {
        onLongPressDetected(motionEvent);
    }
});

private void onLongPressDetected(MotionEvent motionEvent) {
    if (mTaskbarActivityContext != null
            && isInArea(motionEvent.getRawX())
            && !mIsTransientTaskbar) {
        boolean taskBarPressed = mTaskbarActivityContext.onLongPressToUnstashTaskbar();
        if (taskBarPressed) {
            setActive(motionEvent);
        }
    }
}

quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java

public boolean onLongPressToUnstashTaskbar() {
    return mControllers.taskbarStashController.onLongPressToUnstashTaskbar();
}

quickstep/src/com/android/launcher3/taskbar/TaskbarStashController.java

public boolean onLongPressToUnstashTaskbar() {
    if (!isStashed()) {
        // We only listen for long press on the nav region to unstash the taskbar. To stash the
        // taskbar, we use an OnLongClickListener on TaskbarView instead.
        return false;
    }
    if (!canCurrentlyManuallyUnstash()) {
        return false;
    }
    if (updateAndAnimateIsManuallyStashedInApp(false)) {
        mControllers.taskbarActivityContext.getDragLayer().performHapticFeedback(LONG_PRESS);
        return true;
    }
    return false;
}

quickstep/src/com/android/launcher3/taskbar/TaskbarStashController.java

public boolean updateAndAnimateIsManuallyStashedInApp(boolean isManuallyStashedInApp) {
    if (!supportsManualStashing()) {
        return false;
    }
    if (hasAnyFlag(FLAG_STASHED_IN_APP_MANUAL) != isManuallyStashedInApp) {
        mPrefs.edit().putBoolean(SHARED_PREFS_STASHED_KEY, isManuallyStashedInApp).apply();
        updateStateForFlag(FLAG_STASHED_IN_APP_MANUAL, isManuallyStashedInApp);
        applyState();
        return true;
    }
    return false;
}

public void applyState() {
    applyState(hasAnyFlag(FLAG_IN_SETUP) ? 0 : TASKBAR_STASH_DURATION);
}

public void applyState(long duration) {
    Animator animator = createApplyStateAnimator(duration);
    if (animator != null) {
        animator.start();
    }
}

2025-02-26 08:41:09.080 26567-26567 TaskbarStashController  com.android.launcher D  createApplyStateAnimator: duration=300; mState=1;  java.lang.Throwable
   at com.android.launcher3.taskbar.TaskbarStashController.createApplyStateAnimator(TaskbarStashController.java:1140)
   at com.android.launcher3.taskbar.TaskbarStashController.applyState(TaskbarStashController.java:1120)
   at com.android.launcher3.taskbar.TaskbarStashController.applyState(TaskbarStashController.java:1116)
   at com.android.launcher3.taskbar.TaskbarStashController.updateAndAnimateIsManuallyStashedInApp(TaskbarStashController.java:1695)
   at com.android.launcher3.taskbar.TaskbarStashController.onLongPressToUnstashTaskbar(TaskbarStashController.java:1723)
   at com.android.launcher3.taskbar.TaskbarActivityContext.onLongPressToUnstashTaskbar(TaskbarActivityContext.java:1727)
   at com.android.quickstep.inputconsumers.TaskbarUnstashInputConsumer.onLongPressDetected(TaskbarUnstashInputConsumer.java:520)
   at com.android.quickstep.inputconsumers.TaskbarUnstashInputConsumer.access$000(TaskbarUnstashInputConsumer.java:71)
   at com.android.quickstep.inputconsumers.TaskbarUnstashInputConsumer$1.onLongPress(TaskbarUnstashInputConsumer.java:152)
   at android.view.GestureDetector.dispatchLongPress(GestureDetector.java:934)
   at android.view.GestureDetector.-$$Nest$mdispatchLongPress(Unknown Source:0)
   at android.view.GestureDetector$GestureHandler.handleMessage(GestureDetector.java:334)
   at android.os.Handler.dispatchMessage(Handler.java:107)
   at android.os.Looper.loopOnce(Looper.java:233)
   at android.os.Looper.loop(Looper.java:318)
   at android.app.ActivityThread.main(ActivityThread.java:9318)
   at java.lang.reflect.Method.invoke(Native Method)
   at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:584)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:892)
2、长按taskbar显示小白条，可以通过上滑显示taskbar

com/android/launcher3/taskbar/TaskbarView.java

public boolean onTouchEvent(MotionEvent event) {
    if (event.getAction() == MotionEvent.ACTION_DOWN) {
        targetGravity = -1;
        if (isShown()) {
            Rect rect = getIconLayoutBounds();
            if (event.getY() > rect.top && event.getY() < rect.bottom) {
                if (event.getX() < rect.left) {
                    targetGravity = isLayoutRtl() ? Gravity.END : Gravity.START;
                } else if (event.getX() > rect.right) {
                    targetGravity = isLayoutRtl() ? Gravity.START : Gravity.END;
                }
            }
        }
    }

    if (mControllerCallbacks.onTouchEvent(event)) {
        int oldAction = event.getAction();
        try {
            event.setAction(MotionEvent.ACTION_CANCEL);
            return super.onTouchEvent(event);
        } finally {
            event.setAction(oldAction);
        }
    }

    return super.onTouchEvent(event);
}

com/android/launcher3/taskbar/TaskbarViewCallbacks.java

public boolean onTouchEvent(MotionEvent motionEvent) {
    final float x = motionEvent.getRawX();
    final float y = motionEvent.getRawY();
    switch (motionEvent.getAction()) {
        case MotionEvent.ACTION_DOWN:
            mDownX = x;
            mDownY = y;
            mControllers.taskbarStashController.startStashHint(/* animateForward = */ true);
            mCanceledStashHint = false;
            postCheckForLongPress();
            break;
        case MotionEvent.ACTION_MOVE:
            if (!mCanceledStashHint && squaredHypot(mDownX - x, mDownY - y) > mSquaredTouchSlop) {
                mControllers.taskbarStashController.startStashHint(/* animateForward= */ false);
                mCanceledStashHint = true;
                cancelLongPress();
                return true;
            }
            break;
        case MotionEvent.ACTION_UP:
        case MotionEvent.ACTION_CANCEL:
            if (!mCanceledStashHint) {
                mControllers.taskbarStashController.startStashHint( /* animateForward= */ false);
                cancelLongPress();
            }
            break;
    }

    return false;
}

2025-02-26 08:43:38.437 26567-26567 TaskbarStashController  com.android.launcher  D  createApplyStateAnimator: duration=300; mState=65537;  java.lang.Throwable
   at com.android.launcher3.taskbar.TaskbarStashController.createApplyStateAnimator(TaskbarStashController.java:1140)
   at com.android.launcher3.taskbar.TaskbarStashController.applyState(TaskbarStashController.java:1120)
   at com.android.launcher3.taskbar.TaskbarStashController.applyState(TaskbarStashController.java:1116)
   at com.android.launcher3.taskbar.TaskbarStashController.updateAndAnimateIsManuallyStashedInApp(TaskbarStashController.java:1695)
   at com.android.launcher3.taskbar.TaskbarViewCallbacks.lambda$getBackgroundOnLongClickListener$2$com-android-launcher3-taskbar-TaskbarViewCallbacks(TaskbarViewCallbacks.java:98)
   at com.android.launcher3.taskbar.TaskbarViewCallbacks$$ExternalSyntheticLambda2.onLongClick(D8$$SyntheticClass:0)
   at com.android.launcher3.taskbar.TaskbarViewCallbacks.lambda$postCheckForLongPress$3$com-android-launcher3-taskbar-TaskbarViewCallbacks(TaskbarViewCallbacks.java:168)
   at com.android.launcher3.taskbar.TaskbarViewCallbacks$$ExternalSyntheticLambda1.run(D8$$SyntheticClass:0)
   at android.os.Handler.handleCallback(Handler.java:959)
   at android.os.Handler.dispatchMessage(Handler.java:100)
   at android.os.Looper.loopOnce(Looper.java:233)
   at android.os.Looper.loop(Looper.java:318)
   at android.app.ActivityThread.main(ActivityThread.java:9318)
   at java.lang.reflect.Method.invoke(Native Method)
   at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:584)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:892)

com/android/quickstep/inputconsumers/TaskbarUnstashInputConsumer.java

public void onMotionEvent(MotionEvent ev) {
    if (enableScalingRevealHomeAnimation() && mIsTransientTaskbar) {
        checkVelocityForTaskbarBackground(ev);
    }
    if (mState != STATE_ACTIVE) {
        boolean isStashedTaskbarHovered = isMouseEvent(ev) && isStashedTaskbarHovered((int) ev.getX(), (int) ev.getY());
        // Only show the transient task bar if the touch events are on the screen.
        if (!isTrackpadMotionEvent(ev)) {
            final float x = ev.getRawX();
            final float y = ev.getRawY();
            switch (ev.getAction()) {
                case MotionEvent.ACTION_DOWN:
                    mActivePointerId = ev.getPointerId(0);
                    mDownPos.set(ev.getX(), ev.getY());
                    mLastPos.set(mDownPos);

                    mHasPassedTaskbarNavThreshold = false;
                    mTaskbarActivityContext.setAutohideSuspendFlag(FLAG_AUTOHIDE_SUSPEND_TOUCHING, true);
                    if (mTransitionCallback != null && !mIsTaskbarAllAppsOpen) {
                        mTransitionCallback.onActionDown();
                    }
                    if (mIsTransientTaskbar && isInBubbleBarArea(x)) {
                        mIsInBubbleBarArea = true;
                    }
                    break;
                case MotionEvent.ACTION_POINTER_UP:
                    int ptrIdx = ev.getActionIndex();
                    int ptrId = ev.getPointerId(ptrIdx);
                    if (ptrId == mActivePointerId) {
                        final int newPointerIdx = ptrIdx == 0 ? 1 : 0;
                        mDownPos.set(
                                ev.getX(newPointerIdx) - (mLastPos.x - mDownPos.x),
                                ev.getY(newPointerIdx) - (mLastPos.y - mDownPos.y));
                        mLastPos.set(ev.getX(newPointerIdx), ev.getY(newPointerIdx));
                        mActivePointerId = ev.getPointerId(newPointerIdx);
                    }
                    break;
                case MotionEvent.ACTION_MOVE:
                    int pointerIndex = ev.findPointerIndex(mActivePointerId);
                    if (pointerIndex == INVALID_POINTER_ID) {
                        break;
                    }
                    mLastPos.set(ev.getX(pointerIndex), ev.getY(pointerIndex));

                    float dX = mLastPos.x - mDownPos.x;
                    float dY = mLastPos.y - mDownPos.y;

                    if (!mIsPassedBubbleBarSlop && mIsInBubbleBarArea) {
                        boolean passedSlop =  Math.abs(dY) > mTouchSlop || Math.abs(dX) > mTouchSlop;
                        if (passedSlop) {
                            mIsPassedBubbleBarSlop = true;
                            mIsVerticalGestureOverBubbleBar = Math.abs(dY) > Math.abs(dX);
                            if (mIsVerticalGestureOverBubbleBar) {
                                setActive(ev);
                            }
                        }
                    }

                    if (mIsTransientTaskbar) {
                        boolean passedTaskbarNavThreshold = dY < 0 && Math.abs(dY) >= mTaskbarNavThreshold;
                        if (!mHasPassedTaskbarNavThreshold && passedTaskbarNavThreshold && !mGestureState.isInExtendedSlopRegion()) {
                            mHasPassedTaskbarNavThreshold = true;
                            if (mIsInBubbleBarArea && mIsVerticalGestureOverBubbleBar) {
                                mTaskbarActivityContext.onSwipeToOpenBubblebar(); // 上滑显示BubbleBar，最终调用掉SystemUI中去显示
                            } else {
                                mTaskbarActivityContext.onSwipeToUnstashTaskbar(); // 上滑显示taskbar并做动画
                            }
                        }

                        if (dY < 0) {
                            dY = -OverScroll.dampedScroll(-dY, mTaskbarNavThresholdY);
                            if (mTransitionCallback != null && !mIsTaskbarAllAppsOpen) {
                                mTransitionCallback.onActionMove(dY);
                            }
                        }
                    }
                    break;
                case MotionEvent.ACTION_UP:
                case MotionEvent.ACTION_CANCEL:
                    cleanupAfterMotionEvent();
                    break;
                case MotionEvent.ACTION_BUTTON_RELEASE:
                    if (isStashedTaskbarHovered) {
                        mOverviewCommandHelper.addCommand(OverviewCommandHelper.TYPE_HOME);
                    }
                    break;
            }
        }
        boolean isMovingInBubbleBarArea = mIsInBubbleBarArea && ev.getAction() == ACTION_MOVE;
        if (!isStashedTaskbarHovered) {
            // if we're moving in the bubble bar area but we haven't passed the slop yet, don't
            // propagate to the delegate, until we can determine the direction of the gesture.
            if (!isMovingInBubbleBarArea || mIsPassedBubbleBarSlop) {
                mDelegate.onMotionEvent(ev);
            }
        }
    } else if (mIsVerticalGestureOverBubbleBar) {
        // if we get here then this gesture is a vertical swipe over the bubble bar.
        // we're also active and there's no need to delegate any additional motion events. the
        // rest of the gesture will be handled here.
        switch (ev.getAction()) {
            case ACTION_MOVE:
                int pointerIndex = ev.findPointerIndex(mActivePointerId);
                if (pointerIndex == INVALID_POINTER_ID) {
                    break;
                }
                mLastPos.set(ev.getX(pointerIndex), ev.getY(pointerIndex));

                float dY = mLastPos.y - mDownPos.y;

                // bubble bar swipe gesture uses the same threshold as the taskbar.
                boolean passedTaskbarNavThreshold = dY < 0 && Math.abs(dY) >= mTaskbarNavThreshold;

                if (!mHasPassedTaskbarNavThreshold && passedTaskbarNavThreshold) {
                    mHasPassedTaskbarNavThreshold = true;
                    mTaskbarActivityContext.onSwipeToOpenBubblebar(); // 上滑显示BubbleBar，最终调用掉SystemUI中去显示
                }
                break;
            case ACTION_UP:
            case ACTION_CANCEL:
                cleanupAfterMotionEvent();
                break;
        }
    }
}

public void onSwipeToUnstashTaskbar() {
    boolean wasStashed = mControllers.taskbarStashController.isStashed();
    mControllers.taskbarStashController.updateAndAnimateTransientTaskbar(/* stash= */ false); // 上滑显示taskbar并做动画
    boolean isStashed = mControllers.taskbarStashController.isStashed();
    if (isStashed != wasStashed) {
        VibratorWrapper.INSTANCE.get(this).vibrateForTaskbarUnstash();
    }
    mControllers.taskbarEduTooltipController.hide();
}
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