package com.sothree.slidinguppanel;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.os.Parcel;
import android.os.Parcelable;
import android.support.v4.view.MotionEventCompat;
import android.support.v4.view.ViewCompat;
import android.support.v4.widget.ViewDragHelper;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.SoundEffectConstants;
import android.view.View;
import android.view.ViewGroup;
import android.view.accessibility.AccessibilityEvent;
public class SlidingUpPanelLayout extends ViewGroup {
private static final String TAG = "SlidingPaneLayout";
/**
* Default peeking out panel height
*/
private static final int DEFAULT_PANEL_HEIGHT = 68; // dp;
/**
* Default height of the shadow above the peeking out panel
*/
private static final int DEFAULT_SHADOW_HEIGHT = 4; // dp;
/**
* If no fade color is given by default it will fade to 80% gray.
*/
private static final int DEFAULT_FADE_COLOR = 0x99000000;
/**
* Minimum velocity that will be detected as a fling
*/
private static final int MIN_FLING_VELOCITY = 400; // dips per second
/**
* The fade color used for the panel covered by the slider. 0 = no fading.
*/
private int mCoveredFadeColor = DEFAULT_FADE_COLOR;
/**
* The paint used to dim the main layout when sliding
*/
private final Paint mCoveredFadePaint = new Paint();
/**
* Drawable used to draw the shadow between panes.
*/
private Drawable mShadowDrawable;
/**
* The size of the overhang in pixels.
*/
private int mPanelHeight;
/**
* The size of the shadow in pixels.
*/
private final int mShadowHeight;
/**
* True if a panel can slide with the current measurements
*/
private boolean mCanSlide;
/**
* If provided, the panel can be dragged by only this view. Otherwise, the entire panel can be
* used for dragging.
*/
private View mDragView;
/**
* The child view that can slide, if any.
*/
private View mSlideableView;
/**
* How far the panel is offset from its expanded position.
* range [0, 1] where 0 = expanded, 1 = collapsed.
*/
private float mSlideOffset;
/**
* How far in pixels the slideable panel may move.
*/
private int mSlideRange;
/**
* A panel view is locked into internal scrolling or another condition that
* is preventing a drag.
*/
private boolean mIsUnableToDrag;
private float mInitialMotionX;
private float mInitialMotionY;
private boolean mDragViewHit;
private PanelSlideListener mPanelSlideListener;
private final ViewDragHelper mDragHelper;
/**
* Stores whether or not the pane was expanded the last time it was slideable.
* If expand/collapse operations are invoked this state is modified. Used by
* instance state save/restore.
*/
private boolean mPreservedExpandedState;
private boolean mFirstLayout = true;
private final Rect mTmpRect = new Rect();
/**
* Listener for monitoring events about sliding panes.
*/
public interface PanelSlideListener {
/**
* Called when a sliding pane's position changes.
* @param panel The child view that was moved
* @param slideOffset The new offset of this sliding pane within its range, from 0-1
*/
public void onPanelSlide(View panel, float slideOffset);
/**
* Called when a sliding pane becomes slid completely collapsed. The pane may or may not
* be interactive at this point depending on if it's shown or hidden
* @param panel The child view that was slid to an collapsed position, revealing other panes
*/
public void onPanelCollapsed(View panel);
/**
* Called when a sliding pane becomes slid completely expanded. The pane is now guaranteed
* to be interactive. It may now obscure other views in the layout.
* @param panel The child view that was slid to a expanded position
*/
public void onPanelExpanded(View panel);
}
/**
* No-op stubs for {@link PanelSlideListener}. If you only want to implement a subset
* of the listener methods you can extend this instead of implement the full interface.
*/
public static class SimplePanelSlideListener implements PanelSlideListener {
@Override
public void onPanelSlide(View panel, float slideOffset) {
}
@Override
public void onPanelCollapsed(View panel) {
}
@Override
public void onPanelExpanded(View panel) {
}
}
public SlidingUpPanelLayout(Context context) {
this(context, null);
}
public SlidingUpPanelLayout(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public SlidingUpPanelLayout(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
final float density = context.getResources().getDisplayMetrics().density;
mPanelHeight = (int) (DEFAULT_PANEL_HEIGHT * density + 0.5f);
mShadowHeight = (int) (DEFAULT_SHADOW_HEIGHT * density + 0.5f);
setWillNotDraw(false);
mDragHelper = ViewDragHelper.create(this, 0.5f, new DragHelperCallback());
mDragHelper.setMinVelocity(MIN_FLING_VELOCITY * density);
mCanSlide = true;
setCoveredFadeColor(DEFAULT_FADE_COLOR);
}
/**
* Set the color used to fade the pane covered by the sliding pane out when the pane
* will become fully covered in the expanded state.
*
* @param color An ARGB-packed color value
*/
public void setCoveredFadeColor(int color) {
mCoveredFadeColor = color;
invalidate();
}
/**
* @return The ARGB-packed color value used to fade the fixed pane
*/
public int getCoveredFadeColor() {
return mCoveredFadeColor;
}
/**
* Set the collapsed panel height in pixels
*
* @param val A height in pixels
*/
public void setPanelHeight(int val) {
mPanelHeight = val;
}
/**
* @return The current collapsed panel height
*/
public int getPanelHeight() {
return mPanelHeight;
}
public void setPanelSlideListener(PanelSlideListener listener) {
mPanelSlideListener = listener;
}
/**
* Set the draggable view portion. Use to null, to allow the whole panel to be draggable
*
* @param dragView A view that will be used to drag the panel.
*/
public void setDragView(View dragView) {
mDragView = dragView;
}
/**
* Set the shadow for the sliding panel
*
*/
public void setShadowDrawable(Drawable drawable) {
mShadowDrawable = drawable;
}
void dispatchOnPanelSlide(View panel) {
if (mPanelSlideListener != null) {
mPanelSlideListener.onPanelSlide(panel, mSlideOffset);
}
}
void dispatchOnPanelExpanded(View panel) {
if (mPanelSlideListener != null) {
mPanelSlideListener.onPanelExpanded(panel);
}
sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
}
void dispatchOnPanelCollapsed(View panel) {
if (mPanelSlideListener != null) {
mPanelSlideListener.onPanelCollapsed(panel);
}
sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
}
void updateObscuredViewVisibility() {
if (getChildCount() == 0) {
return;
}
final int leftBound = getPaddingLeft();
final int rightBound = getWidth() - getPaddingRight();
final int topBound = getPaddingTop();
final int bottomBound = getHeight() - getPaddingBottom();
final int left;
final int right;
final int top;
final int bottom;
if (mSlideableView != null && hasOpaqueBackground(mSlideableView)) {
left = mSlideableView.getLeft();
right = mSlideableView.getRight();
top = mSlideableView.getTop();
bottom = mSlideableView.getBottom();
} else {
left = right = top = bottom = 0;
}
View child = getChildAt(0);
final int clampedChildLeft = Math.max(leftBound, child.getLeft());
final int clampedChildTop = Math.max(topBound, child.getTop());
final int clampedChildRight = Math.min(rightBound, child.getRight());
final int clampedChildBottom = Math.min(bottomBound, child.getBottom());
final int vis;
if (clampedChildLeft >= left && clampedChildTop >= top &&
clampedChildRight <= right && clampedChildBottom <= bottom) {
vis = INVISIBLE;
} else {
vis = VISIBLE;
}
child.setVisibility(vis);
}
void setAllChildrenVisible() {
for (int i = 0, childCount = getChildCount(); i < childCount; i++) {
final View child = getChildAt(i);
if (child.getVisibility() == INVISIBLE) {
child.setVisibility(VISIBLE);
}
}
}
private static boolean hasOpaqueBackground(View v) {
final Drawable bg = v.getBackground();
if (bg != null) {
return bg.getOpacity() == PixelFormat.OPAQUE;
}
return false;
}
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
mFirstLayout = true;
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
mFirstLayout = true;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
final int widthMode = MeasureSpec.getMode(widthMeasureSpec);
final int widthSize = MeasureSpec.getSize(widthMeasureSpec);
final int heightMode = MeasureSpec.getMode(heightMeasureSpec);
final int heightSize = MeasureSpec.getSize(heightMeasureSpec);
if (widthMode != MeasureSpec.EXACTLY) {
throw new IllegalStateException("Width must have an exact value or MATCH_PARENT");
} else if (heightMode != MeasureSpec.EXACTLY) {
throw new IllegalStateException("Height must have an exact value or MATCH_PARENT");
}
int layoutHeight = heightSize - getPaddingTop() - getPaddingBottom();
int panelHeight = mPanelHeight;
final int childCount = getChildCount();
if (childCount > 2) {
Log.e(TAG, "onMeasure: More than two child views are not supported.");
} else if (getChildAt(1).getVisibility() == GONE) {
panelHeight = 0;
}
// We'll find the current one below.
mSlideableView = null;
mCanSlide = false;
// First pass. Measure based on child LayoutParams width/height.
for (int i = 0; i < childCount; i++) {
final View child = getChildAt(i);
final LayoutParams lp = (LayoutParams) child.getLayoutParams();
int height = layoutHeight;
if (child.getVisibility() == GONE) {
lp.dimWhenOffset = false;
continue;
}
if (i == 1) {
lp.slideable = true;
lp.dimWhenOffset = true;
mSlideableView = child;
mCanSlide = true;
} else {
height -= panelHeight;
}
int childWidthSpec;
if (lp.width == LayoutParams.WRAP_CONTENT) {
childWidthSpec = MeasureSpec.makeMeasureSpec(widthSize, MeasureSpec.AT_MOST);
} else if (lp.width == LayoutParams.MATCH_PARENT) {
childWidthSpec = MeasureSpec.makeMeasureSpec(widthSize, MeasureSpec.EXACTLY);
} else {
childWidthSpec = MeasureSpec.makeMeasureSpec(lp.width, MeasureSpec.EXACTLY);
}
int childHeightSpec;
if (lp.height == LayoutParams.WRAP_CONTENT) {
childHeightSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.AT_MOST);
} else if (lp.height == LayoutParams.MATCH_PARENT) {
childHeightSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY);
} else {
childHeightSpec = MeasureSpec.makeMeasureSpec(lp.height, MeasureSpec.EXACTLY);
}
child.measure(childWidthSpec, childHeightSpec);
}
setMeasuredDimension(widthSize, heightSize);
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
final int paddingLeft = getPaddingLeft();
final int paddingTop = getPaddingTop();
final int childCount = getChildCount();
int yStart = paddingTop;
int nextYStart = yStart;
if (mFirstLayout) {
mSlideOffset = mCanSlide && mPreservedExpandedState ? 0.f : 1.f;
}
for (int i = 0; i < childCount; i++) {
final View child = getChildAt(i);
if (child.getVisibility() == GONE) {
continue;
}
final LayoutParams lp = (LayoutParams) child.getLayoutParams();
int childHeight = child.getMeasuredHeight();
if (lp.slideable) {
mSlideRange = childHeight - mPanelHeight;
yStart += (int) (mSlideRange * mSlideOffset);
} else {
yStart = nextYStart;
}
final int childTop = yStart;
final int childBottom = childTop + childHeight;
final int childLeft = paddingLeft;
final int childRight = childLeft + child.getMeasuredWidth();
child.layout(childLeft, childTop, childRight, childBottom);
nextYStart += child.getHeight();
}
if (mFirstLayout) {
updateObscuredViewVisibility();
}
mFirstLayout = false;
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
// Recalculate sliding panes and their details
if (h != oldh) {
mFirstLayout = true;
}
}
private boolean isDragViewHit(int x, int y) {
View v = mDragView != null ? mDragView : mSlideableView;
if (v == null) return false;
int[] viewLocation = new int[2];
v.getLocationOnScreen(viewLocation);
int[] parentLocation = new int[2];
this.getLocationOnScreen(parentLocation);
int screenX = parentLocation[0] + x;
int screenY = parentLocation[1] + y;
return screenX >= viewLocation[0] && screenX < viewLocation[0] + v.getWidth() &&
screenY >= viewLocation[1] && screenY < viewLocation[1] + v.getHeight();
}
@Override
public void requestChildFocus(View child, View focused) {
super.requestChildFocus(child, focused);
if (!isInTouchMode() && !mCanSlide) {
mPreservedExpandedState = child == mSlideableView;
}
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
final int action = MotionEventCompat.getActionMasked(ev);
if (!mCanSlide || (mIsUnableToDrag && action != MotionEvent.ACTION_DOWN)) {
mDragHelper.cancel();
return super.onInterceptTouchEvent(ev);
}
if (action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP) {
mDragHelper.cancel();
return false;
}
final float x = ev.getX();
final float y = ev.getY();
boolean interceptTap = false;
switch (action) {
case MotionEvent.ACTION_DOWN: {
mIsUnableToDrag = false;
mInitialMotionX = x;
mInitialMotionY = y;
mDragViewHit = isDragViewHit((int) x, (int) y);
if (mDragViewHit) {
interceptTap = true;
}
break;
}
case MotionEvent.ACTION_MOVE: {
final float adx = Math.abs(x - mInitialMotionX);
final float ady = Math.abs(y - mInitialMotionY);
final int slop = mDragHelper.getTouchSlop();
if (ady > slop && adx > ady) {
mDragHelper.cancel();
mIsUnableToDrag = true;
return false;
}
}
}
final boolean interceptForDrag = mDragViewHit && mDragHelper.shouldInterceptTouchEvent(ev);
return interceptForDrag || interceptTap;
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
if (!mCanSlide) {
return super.onTouchEvent(ev);
}
mDragHelper.processTouchEvent(ev);
final int action = ev.getAction();
boolean wantTouchEvents = true;
switch (action & MotionEventCompat.ACTION_MASK) {
case MotionEvent.ACTION_DOWN: {
final float x = ev.getX();
final float y = ev.getY();
mInitialMotionX = x;
mInitialMotionY = y;
break;
}
case MotionEvent.ACTION_UP: {
final float x = ev.getX();
final float y = ev.getY();
final float dx = x - mInitialMotionX;
final float dy = y - mInitialMotionY;
final int slop = mDragHelper.getTouchSlop();
if (dx * dx + dy * dy < slop * slop &&
isDragViewHit((int) x, (int) y)) {
View v = mDragView != null ? mDragView : mSlideableView;
v.playSoundEffect(SoundEffectConstants.CLICK);
if (!isExpanded()) {
expandPane(mSlideableView, 0);
} else {
collapsePane();
}
break;
}
break;
}
}
return wantTouchEvents;
}
private boolean expandPane(View pane, int initialVelocity) {
if (mFirstLayout || smoothSlideTo(0.f, initialVelocity)) {
mPreservedExpandedState = true;
return true;
}
return false;
}
private boolean collapsePane(View pane, int initialVelocity) {
if (mFirstLayout || smoothSlideTo(1.f, initialVelocity)) {
mPreservedExpandedState = false;
return true;
}
return false;
}
/**
* Collapse the sliding pane if it is currently slideable. If first layout
* has already completed this will animate.
*
* @return true if the pane was slideable and is now collapsed/in the process of collapsing
*/
public boolean collapsePane() {
return collapsePane(mSlideableView, 0);
}
/**
* Expand the sliding pane if it is currently slideable. If first layout
* has already completed this will animate.
*
* @return true if the pane was slideable and is now expanded/in the process of expading
*/
public boolean expandPane() {
if (!isPaneVisible()) {
showPane();
}
return expandPane(mSlideableView, 0);
}
/**
* Check if the layout is completely expanded.
*
* @return true if sliding panels are completely expanded
*/
public boolean isExpanded() {
return mCanSlide && mSlideOffset == 0;
}
/**
* Check if the content in this layout cannot fully fit side by side and therefore
* the content pane can be slid back and forth.
*
* @return true if content in this layout can be expanded
*/
public boolean isSlideable() {
return mCanSlide;
}
public boolean isPaneVisible() {
if (getChildCount() < 2) {
return false;
}
View slidingPane = getChildAt(1);
return slidingPane.getVisibility() == View.VISIBLE;
}
public void showPane() {
if (getChildCount() < 2) {
return;
}
View slidingPane = getChildAt(1);
slidingPane.setVisibility(View.VISIBLE);
requestLayout();
}
public void hidePane() {
if (mSlideableView == null) {
return;
}
mSlideableView.setVisibility(View.GONE);
requestLayout();
}
private void onPanelDragged(int newTop) {
final int topBound = getPaddingTop();
mSlideOffset = (float) (newTop - topBound) / mSlideRange;
dispatchOnPanelSlide(mSlideableView);
}
@Override
protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
final LayoutParams lp = (LayoutParams) child.getLayoutParams();
boolean result;
final int save = canvas.save(Canvas.CLIP_SAVE_FLAG);
boolean drawScrim = false;
if (mCanSlide && !lp.slideable && mSlideableView != null) {
// Clip against the slider; no sense drawing what will immediately be covered.
canvas.getClipBounds(mTmpRect);
mTmpRect.bottom = Math.min(mTmpRect.bottom, mSlideableView.getTop());
canvas.clipRect(mTmpRect);
if (mSlideOffset < 1) {
drawScrim = true;
}
}
result = super.drawChild(canvas, child, drawingTime);
canvas.restoreToCount(save);
if (drawScrim) {
final int baseAlpha = (mCoveredFadeColor & 0xff000000) >>> 24;
final int imag = (int) (baseAlpha * (1 - mSlideOffset));
final int color = imag << 24 | (mCoveredFadeColor & 0xffffff);
mCoveredFadePaint.setColor(color);
canvas.drawRect(mTmpRect, mCoveredFadePaint);
}
return result;
}
/**
* Smoothly animate mDraggingPane to the target X position within its range.
*
* @param slideOffset position to animate to
* @param velocity initial velocity in case of fling, or 0.
*/
boolean smoothSlideTo(float slideOffset, int velocity) {
if (!mCanSlide) {
// Nothing to do.
return false;
}
final int topBound = getPaddingTop();
int y = (int) (topBound + slideOffset * mSlideRange);
if (mDragHelper.smoothSlideViewTo(mSlideableView, mSlideableView.getLeft(), y)) {
setAllChildrenVisible();
ViewCompat.postInvalidateOnAnimation(this);
return true;
}
return false;
}
@Override
public void computeScroll() {
if (mDragHelper.continueSettling(true)) {
if (!mCanSlide) {
mDragHelper.abort();
return;
}
ViewCompat.postInvalidateOnAnimation(this);
}
}
@Override
public void draw(Canvas c) {
super.draw(c);
if (mSlideableView == null) {
// No need to draw a shadow if we don't have one.
return;
}
final int right = mSlideableView.getRight();
final int top = mSlideableView.getTop() - mShadowHeight;
final int bottom = mSlideableView.getTop();
final int left = mSlideableView.getLeft();
if (mShadowDrawable != null) {
mShadowDrawable.setBounds(left, top, right, bottom);
mShadowDrawable.draw(c);
}
}
/**
* Tests scrollability within child views of v given a delta of dx.
*
* @param v View to test for horizontal scrollability
* @param checkV Whether the view v passed should itself be checked for scrollability (true),
* or just its children (false).
* @param dx Delta scrolled in pixels
* @param x X coordinate of the active touch point
* @param y Y coordinate of the active touch point
* @return true if child views of v can be scrolled by delta of dx.
*/
protected boolean canScroll(View v, boolean checkV, int dx, int x, int y) {
if (v instanceof ViewGroup) {
final ViewGroup group = (ViewGroup) v;
final int scrollX = v.getScrollX();
final int scrollY = v.getScrollY();
final int count = group.getChildCount();
// Count backwards - let topmost views consume scroll distance first.
for (int i = count - 1; i >= 0; i--) {
final View child = group.getChildAt(i);
if (x + scrollX >= child.getLeft() && x + scrollX < child.getRight() &&
y + scrollY >= child.getTop() && y + scrollY < child.getBottom() &&
canScroll(child, true, dx, x + scrollX - child.getLeft(),
y + scrollY - child.getTop())) {
return true;
}
}
}
return checkV && ViewCompat.canScrollHorizontally(v, -dx);
}
@Override
protected ViewGroup.LayoutParams generateDefaultLayoutParams() {
return new LayoutParams();
}
@Override
protected ViewGroup.LayoutParams generateLayoutParams(ViewGroup.LayoutParams p) {
return p instanceof MarginLayoutParams
? new LayoutParams((MarginLayoutParams) p)
: new LayoutParams(p);
}
@Override
protected boolean checkLayoutParams(ViewGroup.LayoutParams p) {
return p instanceof LayoutParams && super.checkLayoutParams(p);
}
@Override
public ViewGroup.LayoutParams generateLayoutParams(AttributeSet attrs) {
return new LayoutParams(getContext(), attrs);
}
@Override
protected Parcelable onSaveInstanceState() {
Parcelable superState = super.onSaveInstanceState();
SavedState ss = new SavedState(superState);
ss.isExpanded = isSlideable() ? isExpanded() : mPreservedExpandedState;
return ss;
}
@Override
protected void onRestoreInstanceState(Parcelable state) {
SavedState ss = (SavedState) state;
super.onRestoreInstanceState(ss.getSuperState());
if (ss.isExpanded) {
expandPane();
} else {
collapsePane();
}
mPreservedExpandedState = ss.isExpanded;
}
private class DragHelperCallback extends ViewDragHelper.Callback {
@Override
public boolean tryCaptureView(View child, int pointerId) {
if (mIsUnableToDrag) {
return false;
}
return ((LayoutParams) child.getLayoutParams()).slideable;
}
@Override
public void onViewDragStateChanged(int state) {
if (mDragHelper.getViewDragState() == ViewDragHelper.STATE_IDLE) {
if (mSlideOffset == 0) {
updateObscuredViewVisibility();
dispatchOnPanelExpanded(mSlideableView);
mPreservedExpandedState = true;
} else {
dispatchOnPanelCollapsed(mSlideableView);
mPreservedExpandedState = false;
}
}
}
@Override
public void onViewCaptured(View capturedChild, int activePointerId) {
// Make all child views visible in preparation for sliding things around
setAllChildrenVisible();
}
@Override
public void onViewPositionChanged(View changedView, int left, int top, int dx, int dy) {
onPanelDragged(top);
invalidate();
}
@Override
public void onViewReleased(View releasedChild, float xvel, float yvel) {
int top = getPaddingTop();
if (yvel > 0 || (yvel == 0 && mSlideOffset > 0.5f)) {
top += mSlideRange;
}
mDragHelper.settleCapturedViewAt(releasedChild.getLeft(), top);
invalidate();
}
@Override
public int getViewVerticalDragRange(View child) {
return mSlideRange;
}
@Override
public int clampViewPositionVertical(View child, int top, int dy) {
final int topBound = getPaddingTop();
final int bottomBound = topBound + mSlideRange;
final int newLeft = Math.min(Math.max(top, topBound), bottomBound);
return newLeft;
}
}
public static class LayoutParams extends ViewGroup.MarginLayoutParams {
private static final int[] ATTRS = new int[] {
android.R.attr.layout_weight
};
/**
* True if this pane is the slideable pane in the layout.
*/
boolean slideable;
/**
* True if this view should be drawn dimmed
* when it's been offset from its default position.
*/
boolean dimWhenOffset;
Paint dimPaint;
public LayoutParams() {
super(MATCH_PARENT, MATCH_PARENT);
}
public LayoutParams(int width, int height) {
super(width, height);
}
public LayoutParams(android.view.ViewGroup.LayoutParams source) {
super(source);
}
public LayoutParams(MarginLayoutParams source) {
super(source);
}
public LayoutParams(LayoutParams source) {
super(source);
}
public LayoutParams(Context c, AttributeSet attrs) {
super(c, attrs);
final TypedArray a = c.obtainStyledAttributes(attrs, ATTRS);
a.recycle();
}
}
static class SavedState extends BaseSavedState {
boolean isExpanded;
SavedState(Parcelable superState) {
super(superState);
}
private SavedState(Parcel in) {
super(in);
isExpanded = in.readInt() != 0;
}
@Override
public void writeToParcel(Parcel out, int flags) {
super.writeToParcel(out, flags);
out.writeInt(isExpanded ? 1 : 0);
}
public static final Parcelable.Creator<SavedState> CREATOR =
new Parcelable.Creator<SavedState>() {
@Override
public SavedState createFromParcel(Parcel in) {
return new SavedState(in);
}
@Override
public SavedState[] newArray(int size) {
return new SavedState[size];
}
};
}
}