问题：屏幕太大，滑动距离太大，并且滑动不流畅导致无法解锁
Notification Keyguard 显示通知锁屏 显示分析
一般情况下解锁根据滑动Y距离的长度和速度，再根据一些因数处理，通过阀值完成解锁。
一.PaneView.java
frameworksasepackagesSystemUIsrccomandroidsystemuistatusbarphonePanelView.java
public boolean onTouchEvent(MotionEvent event) {
private int getFalsingThreshold() {
protected void loadDimens() {
@Override
public boolean onTouchEvent(MotionEvent event) {
if (mInstantExpanding || mTouchDisabled
|| (mMotionAborted && event.getActionMasked() != MotionEvent.ACTION_DOWN)) {
return false;
}
// On expanding, single mouse click expands the panel instead of dragging.
String platform = SystemProperties.get("ro.board.platform");
if (isFullyCollapsed() && event.isFromSource(InputDevice.SOURCE_MOUSE)
&& !"rk312x".equals(platform) && !"rk3126c".equals(platform)
&& !"rk3399".equals(platform)) {
if (event.getAction() == MotionEvent.ACTION_UP) {
expand(true);
}
return true;
}
/*
* We capture touch events here and update the expand height here in case according to
* the users fingers. This also handles multi-touch.
*
* If the user just clicks shortly, we show a quick peek of the shade.
*
* Flinging is also enabled in order to open or close the shade.
*/
int pointerIndex = event.findPointerIndex(mTrackingPointer);
if (pointerIndex < 0) {
pointerIndex = 0;
mTrackingPointer = event.getPointerId(pointerIndex);
}
final float x = event.getX(pointerIndex);
final float y = event.getY(pointerIndex);
if (event.getActionMasked() == MotionEvent.ACTION_DOWN) {
mGestureWaitForTouchSlop = isFullyCollapsed() || hasConflictingGestures();
mIgnoreXTouchSlop = isFullyCollapsed() || shouldGestureIgnoreXTouchSlop(x, y);
}
switch (event.getActionMasked()) {
case MotionEvent.ACTION_DOWN:
startExpandMotion(x, y, false /* startTracking */, mExpandedHeight);
mJustPeeked = false;
mPanelClosedOnDown = isFullyCollapsed();
mHasLayoutedSinceDown = false;
mUpdateFlingOnLayout = false;
mMotionAborted = false;
mPeekTouching = mPanelClosedOnDown;
mTouchAboveFalsingThreshold = false;
mCollapsedAndHeadsUpOnDown = isFullyCollapsed()
&& mHeadsUpManager.hasPinnedHeadsUp();
if (mVelocityTracker == null) {
initVelocityTracker();
}
trackMovement(event);
if (!mGestureWaitForTouchSlop || (mHeightAnimator != null && !mHintAnimationRunning) ||
mPeekPending || mPeekAnimator != null) {
cancelHeightAnimator();
cancelPeek();
mTouchSlopExceeded = (mHeightAnimator != null && !mHintAnimationRunning)
|| mPeekPending || mPeekAnimator != null;
onTrackingStarted();
}
if (isFullyCollapsed() && !mHeadsUpManager.hasPinnedHeadsUp()) {
schedulePeek();
}
break;
case MotionEvent.ACTION_POINTER_UP:
final int upPointer = event.getPointerId(event.getActionIndex());
if (mTrackingPointer == upPointer) {
// gesture is ongoing, find a new pointer to track
final int newIndex = event.getPointerId(0) != upPointer ? 0 : 1;
final float newY = event.getY(newIndex);
final float newX = event.getX(newIndex);
mTrackingPointer = event.getPointerId(newIndex);
startExpandMotion(newX, newY, true /* startTracking */, mExpandedHeight);
}
break;
case MotionEvent.ACTION_POINTER_DOWN:
if (mStatusBar.getBarState() == StatusBarState.KEYGUARD) {
mMotionAborted = true;
endMotionEvent(event, x, y, true /* forceCancel */);
return false;
}
break;
case MotionEvent.ACTION_MOVE:
float h = y - mInitialTouchY;
// If the panel was collapsed when touching, we only need to check for the
// y-component of the gesture, as we have no conflicting horizontal gesture.
if (Math.abs(h) > mTouchSlop
&& (Math.abs(h) > Math.abs(x - mInitialTouchX)
|| mIgnoreXTouchSlop)) {
mTouchSlopExceeded = true;
if (mGestureWaitForTouchSlop && !mTracking && !mCollapsedAndHeadsUpOnDown) {
if (!mJustPeeked && mInitialOffsetOnTouch != 0f) {
startExpandMotion(x, y, false /* startTracking */, mExpandedHeight);
h = 0;
}
cancelHeightAnimator();
removeCallbacks(mPeekRunnable);
mPeekPending = false;
onTrackingStarted();
}
}
final float newHeight = Math.max(0, h + mInitialOffsetOnTouch);
if (newHeight > mPeekHeight) {
if (mPeekAnimator != null) {
mPeekAnimator.cancel();
}
mJustPeeked = false;
}
Log.d("gatsby","-h ->"+-h+" getFalsingThreshold()->"+getFalsingThreshold());//This
if (-h >= getFalsingThreshold()) {
mTouchAboveFalsingThreshold = true;
mUpwardsWhenTresholdReached = isDirectionUpwards(x, y);
}
if (!mJustPeeked && (!mGestureWaitForTouchSlop || mTracking) && !isTrackingBlocked()) {
setExpandedHeightInternal(newHeight);
}
trackMovement(event);
break;
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_CANCEL:
trackMovement(event);
endMotionEvent(event, x, y, false /* forceCancel */);
break;
}
return !mGestureWaitForTouchSlop || mTracking;
}
这个阈值是在如下文件中定义的, 它是用下面的值乘以一个因子(1.5)之后得到这个Y-距离.
private int getFalsingThreshold() {
float factor = mStatusBar.isWakeUpComingFromTouch() ? 1.5f : 1.0f;
return (int) (mUnlockFalsingThreshold * factor);
}
解析配置文件
protected void loadDimens() {
final Resources res = getContext().getResources();
final ViewConfiguration configuration = ViewConfiguration.get(getContext());
mTouchSlop = configuration.getScaledTouchSlop();
mHintDistance = res.getDimension(R.dimen.hint_move_distance);
mUnlockFalsingThreshold = res.getDimensionPixelSize(R.dimen.unlock_falsing_threshold);
}
二.Gatsby patch
diff --git a/frameworks/base/packages/SystemUI/res/values/dimens.xml b/frameworks/base/packages/SystemUI/res/values/dimens.xml
old mode 100644
new mode 100755
index e159501..630257c
--- a/frameworks/base/packages/SystemUI/res/values/dimens.xml
+++ b/frameworks/base/packages/SystemUI/res/values/dimens.xml
@@ -272,7 +272,7 @@
<dimen name="speed_bump_height">16dp</dimen>
<!-- Lockscreen unlocking falsing threshold. -->
- <dimen name="unlock_falsing_threshold">80dp</dimen>
+ <dimen name="unlock_falsing_threshold">30dp</dimen>
<!-- Lockscreen falsing threshold for quick settings. -->
<dimen name="qs_falsing_threshold">60dp</dimen>
diff --git a/frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java b/frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java
index 6587520..3c1bc53 100755
--- a/frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java
+++ b/frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java
@@ -331,6 +331,7 @@ public abstract class PanelView extends FrameLayout {
}
mJustPeeked = false;
}
+ Log.d("gatsby","-h ->"+-h+" getFalsingThreshold()->"+getFalsingThreshold());
if (-h >= getFalsingThreshold()) {
mTouchAboveFalsingThreshold = true;
mUpwardsWhenTresholdReached = isDirectionUpwards(x, y);