下面列出了android.view.Gravity#VERTICAL_GRAVITY_MASK 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
public void setForegroundGravity(View view, int foregroundGravity) {
if (view != null) {
if (mForegroundGravity != foregroundGravity) {
if ((foregroundGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
foregroundGravity |= Gravity.START;
}
if ((foregroundGravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
foregroundGravity |= Gravity.TOP;
}
mForegroundGravity = foregroundGravity;
if (mForegroundGravity == Gravity.FILL && mForeground != null) {
Rect padding = new Rect();
mForeground.getPadding(padding);
}
view.requestLayout();
}
}
}
/**
* Describes how the child views are positioned. Defaults to GRAVITY_TOP. If
* this layout has a VERTICAL orientation, this controls where all the child
* views are placed if there is extra vertical space. If this layout has a
* HORIZONTAL orientation, this controls the alignment of the children.
*
* @param gravity See {@link android.view.Gravity}
*
* @attr ref android.R.styleable#LinearLayout_gravity
*/
@android.view.RemotableViewMethod
public void setGravity(int gravity) {
if (mGravity != gravity) {
if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
gravity |= Gravity.START;
}
if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
gravity |= Gravity.TOP;
}
mGravity = gravity;
requestLayout();
}
}
@Override
public boolean expandItemActionView(MenuBuilder menu, MenuItemImpl item) {
ensureCollapseButtonView();
if (mCollapseButtonView.getParent() != Toolbar.this) {
addView(mCollapseButtonView);
}
mExpandedActionView = item.getActionView();
mCurrentExpandedItem = item;
if (mExpandedActionView.getParent() != Toolbar.this) {
final LayoutParams lp = generateDefaultLayoutParams();
lp.gravity = Gravity.START | (mButtonGravity & Gravity.VERTICAL_GRAVITY_MASK);
lp.mViewType = LayoutParams.EXPANDED;
mExpandedActionView.setLayoutParams(lp);
addView(mExpandedActionView);
}
removeChildrenForExpandedActionView();
requestLayout();
item.setActionViewExpanded(true);
if (mExpandedActionView instanceof CollapsibleActionView) {
((CollapsibleActionView) mExpandedActionView).onActionViewExpanded();
}
return true;
}
/**
* Describes how the foreground is positioned. Defaults to START and TOP.
*
* @param gravity see {@link android.view.Gravity}
* @see #getForegroundGravity()
*/
public void setForegroundGravity(int gravity) {
if (isForegroundEnable()) {
super.setForegroundGravity(gravity);
return;
}
if (mForegroundInfo == null)
mForegroundInfo = new ForegroundInfo();
if (mForegroundInfo.mGravity != gravity) {
if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0)
gravity |= Gravity.START;
if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0)
gravity |= Gravity.TOP;
mForegroundInfo.mGravity = gravity;
requestLayout();
}
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
ensureLayout();
int saveCount = canvas.save();
if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.CENTER_VERTICAL) {
canvas.translate(getPaddingLeft(), (getHeight() - getPaddingTop() - getPaddingBottom() - layout.getHeight()) / 2.0f + getPaddingTop());
} else if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
canvas.translate(getPaddingLeft(), getHeight() - getPaddingBottom() - layout.getHeight());
} else {
canvas.translate(getPaddingLeft(), getPaddingTop());
}
if (textColor != null)
paint.setColor(textColor.getColorForState(getDrawableState(), textColor.getDefaultColor()));
layout.draw(canvas);
canvas.restoreToCount(saveCount);
}
public SwitchBitmapDrawable(TextView view, int gravity,
Bitmap startBitmap, float startFontSize, float startWidth,
Bitmap endBitmap, float endFontSize, float endWidth) {
this.view = view;
this.horizontalGravity = gravity & Gravity.HORIZONTAL_GRAVITY_MASK;
this.verticalGravity = gravity & Gravity.VERTICAL_GRAVITY_MASK;
this.startBitmap = startBitmap;
this.endBitmap = endBitmap;
this.startFontSize = startFontSize;
this.endFontSize = endFontSize;
this.startWidth = startWidth;
this.endWidth = endWidth;
}
public VerticalTextView(Context context, AttributeSet attrs){
super(context, attrs);
final int gravity = getGravity();
if (Gravity.isVertical(gravity) && (gravity&Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
setGravity((gravity&Gravity.HORIZONTAL_GRAVITY_MASK) | Gravity.TOP);
topDown = false;
} else {
topDown = true;
}
}
@MainThread public void show() {
assertMainThread();
View view = toast.getView();
if (view == null) {
throw new IllegalStateException("Can't show a Toast with no View.");
}
Context context = toast.getView().getContext();
WindowManager windowManager = (WindowManager) context.getSystemService(WINDOW_SERVICE);
// We can resolve the Gravity here by using the Locale for getting
// the layout direction
Configuration config = view.getContext().getResources().getConfiguration();
int gravity = toast.getGravity();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
gravity = Gravity.getAbsoluteGravity(gravity, config.getLayoutDirection());
}
params.gravity = gravity;
if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.FILL_HORIZONTAL) {
params.horizontalWeight = 1.0f;
}
if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.FILL_VERTICAL) {
params.verticalWeight = 1.0f;
}
params.x = toast.getXOffset();
params.y = toast.getYOffset();
params.verticalMargin = toast.getVerticalMargin();
params.horizontalMargin = toast.getHorizontalMargin();
params.packageName = context.getPackageName();
if (view.getParent() != null) {
windowManager.removeView(view);
}
windowManager.addView(view, params);
trySendAccessibilityEvent(view);
}
public VerticalButton(Context context, AttributeSet attrs){
super(context, attrs);
final int gravity = getGravity();
if(Gravity.isVertical(gravity) && (gravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
setGravity((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) | Gravity.TOP);
topDown = true;
}
else
topDown = false;
}
public VerticalTextView(Context context, AttributeSet attrs){
super(context, attrs);
final int gravity = getGravity();
if (Gravity.isVertical(gravity) && (gravity&Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
setGravity((gravity&Gravity.HORIZONTAL_GRAVITY_MASK) | Gravity.TOP);
topDown = false;
} else {
topDown = true;
}
}
public VerticalTextView(Context context, AttributeSet attrs){
super(context, attrs);
final int gravity = getGravity();
if(Gravity.isVertical(gravity) && (gravity&Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
setGravity((gravity&Gravity.HORIZONTAL_GRAVITY_MASK) | Gravity.TOP);
topDown = false;
}else
topDown = true;
}
public static void setHorizontalAlignment(android.view.View view, String value) {
ViewGroup.LayoutParams params = view.getLayoutParams();
// Initialize if empty.
if (params == null) {
params = new CommonLayoutParams();
}
// Set margins only if params are of the correct type.
if (params instanceof FrameLayout.LayoutParams) {
FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) params;
switch (value) {
case "left":
lp.gravity = Gravity.LEFT | (lp.gravity & Gravity.VERTICAL_GRAVITY_MASK);
break;
case "center":
case "middle":
lp.gravity = Gravity.CENTER_HORIZONTAL | (lp.gravity & Gravity.VERTICAL_GRAVITY_MASK);
break;
case "right":
lp.gravity = Gravity.RIGHT | (lp.gravity & Gravity.VERTICAL_GRAVITY_MASK);
break;
case "stretch":
lp.gravity = Gravity.FILL_HORIZONTAL | (lp.gravity & Gravity.VERTICAL_GRAVITY_MASK);
break;
}
view.setLayoutParams(params);
}
}
/**
* Compute insets.
*
* <pre>
* ______________________
* |_________dx/2_________|
* |......| /'''''\|......|
* |-dx/2-|| View ||-dx/2-|
* |______| \_____/|______|
* |________ dx/2_________|
* </pre>
*
* @param dx
* the dx the horizontal unfilled space
* @param dy
* the dy the horizontal unfilled space
*/
@SuppressLint("NewApi")
private void computeInsets(final int dx, final int dy) {
final int layoutDirection;
int absoluteGravity = mGravity;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
layoutDirection = getLayoutDirection();
absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
}
switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
case Gravity.LEFT:
mHorizontalInset = 0;
break;
case Gravity.RIGHT:
mHorizontalInset = dx;
break;
case Gravity.CENTER_HORIZONTAL:
default:
mHorizontalInset = dx / 2;
break;
}
switch (absoluteGravity & Gravity.VERTICAL_GRAVITY_MASK) {
case Gravity.TOP:
mVerticalInset = 0;
break;
case Gravity.BOTTOM:
mVerticalInset = dy;
break;
case Gravity.CENTER_VERTICAL:
default:
mVerticalInset = dy / 2;
break;
}
}
/**
* Describes how the foreground is positioned. Defaults to START and TOP.
*
* @param foregroundGravity See {@link android.view.Gravity}
*
* @see #getForegroundGravity()
*
* @attr ref android.R.styleable#FrameLayout_foregroundGravity
*/
public void setForegroundGravity(int foregroundGravity) {
if (mForegroundGravity != foregroundGravity) {
if ((foregroundGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
foregroundGravity |= Gravity.START;
}
if ((foregroundGravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
foregroundGravity |= Gravity.TOP;
}
mForegroundGravity = foregroundGravity;
if (mForegroundGravity == Gravity.FILL && mForeground != null) {
Rect padding = new Rect();
if (mForeground.getPadding(padding)) {
mForegroundPaddingLeft = padding.left;
mForegroundPaddingTop = padding.top;
mForegroundPaddingRight = padding.right;
mForegroundPaddingBottom = padding.bottom;
}
} else {
mForegroundPaddingLeft = 0;
mForegroundPaddingTop = 0;
mForegroundPaddingRight = 0;
mForegroundPaddingBottom = 0;
}
requestLayout();
}
}
@Override
protected void onDraw(Canvas canvas) {
// If there's text of any sort resort to CompoundButton#onDraw
if (getText() != null && getText().length() > 0 ||
getTextOff() != null && getTextOff().length() > 0 ||
getTextOff() != null && getTextOn().length() > 0) {
super.onDraw(canvas);
}
// Otherwise override CompoundButton#onDraw entirely to allow properly aligned image toggles
else {
final Drawable buttonDrawable = CompoundButtonCompat.getButtonDrawable(this);
if (buttonDrawable != null) {
final int verticalGravity = getGravity() & Gravity.VERTICAL_GRAVITY_MASK;
final int horizontalGravity = getGravity() & Gravity.HORIZONTAL_GRAVITY_MASK;
final int drawableHeight = buttonDrawable.getIntrinsicHeight();
final int drawableWidth = buttonDrawable.getIntrinsicWidth();
final int top;
switch (verticalGravity) {
case Gravity.BOTTOM:
top = getHeight() - drawableHeight;
break;
case Gravity.CENTER_VERTICAL:
top = (getHeight() - drawableHeight) / 2;
break;
default:
top = 0;
}
final int left;
switch (horizontalGravity) {
case Gravity.RIGHT:
case Gravity.END:
left = getWidth() - drawableWidth;
break;
case Gravity.CENTER_HORIZONTAL:
left = (getWidth() - drawableWidth) / 2;
break;
default:
left = 0;
}
final int bottom = top + drawableHeight;
final int right = left + drawableWidth;
buttonDrawable.setBounds(left, top, right, bottom);
final Drawable background = getBackground();
if (Build.VERSION.SDK_INT > 21 && background != null) {
background.setHotspotBounds(left, top, right, bottom);
}
buttonDrawable.draw(canvas);
}
}
}
void updateTextPositions(int position, float positionOffset, boolean force) {
if (position != mLastKnownCurrentPage) {
updateText(position, mPager.getAdapter());
} else if (!force && positionOffset == mLastKnownPositionOffset) {
return;
}
mUpdatingPositions = true;
final int prevWidth = mPrevText.getMeasuredWidth();
final int currWidth = mCurrText.getMeasuredWidth();
final int nextWidth = mNextText.getMeasuredWidth();
final int halfCurrWidth = currWidth / 2;
final int stripWidth = getWidth();
final int stripHeight = getHeight();
final int paddingLeft = getPaddingLeft();
final int paddingRight = getPaddingRight();
final int paddingTop = getPaddingTop();
final int paddingBottom = getPaddingBottom();
final int textPaddedLeft = paddingLeft + halfCurrWidth;
final int textPaddedRight = paddingRight + halfCurrWidth;
final int contentWidth = stripWidth - textPaddedLeft - textPaddedRight;
float currOffset = positionOffset + 0.5f;
if (currOffset > 1.f) {
currOffset -= 1.f;
}
final int currCenter = stripWidth - textPaddedRight - (int) (contentWidth * currOffset);
final int currLeft = currCenter - currWidth / 2;
final int currRight = currLeft + currWidth;
final int prevBaseline = mPrevText.getBaseline();
final int currBaseline = mCurrText.getBaseline();
final int nextBaseline = mNextText.getBaseline();
final int maxBaseline = Math.max(Math.max(prevBaseline, currBaseline), nextBaseline);
final int prevTopOffset = maxBaseline - prevBaseline;
final int currTopOffset = maxBaseline - currBaseline;
final int nextTopOffset = maxBaseline - nextBaseline;
final int alignedPrevHeight = prevTopOffset + mPrevText.getMeasuredHeight();
final int alignedCurrHeight = currTopOffset + mCurrText.getMeasuredHeight();
final int alignedNextHeight = nextTopOffset + mNextText.getMeasuredHeight();
final int maxTextHeight = Math.max(Math.max(alignedPrevHeight, alignedCurrHeight),
alignedNextHeight);
final int vgrav = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
int prevTop;
int currTop;
int nextTop;
switch (vgrav) {
default:
case Gravity.TOP:
prevTop = paddingTop + prevTopOffset;
currTop = paddingTop + currTopOffset;
nextTop = paddingTop + nextTopOffset;
break;
case Gravity.CENTER_VERTICAL:
final int paddedHeight = stripHeight - paddingTop - paddingBottom;
final int centeredTop = (paddedHeight - maxTextHeight) / 2;
prevTop = centeredTop + prevTopOffset;
currTop = centeredTop + currTopOffset;
nextTop = centeredTop + nextTopOffset;
break;
case Gravity.BOTTOM:
final int bottomGravTop = stripHeight - paddingBottom - maxTextHeight;
prevTop = bottomGravTop + prevTopOffset;
currTop = bottomGravTop + currTopOffset;
nextTop = bottomGravTop + nextTopOffset;
break;
}
mCurrText.layout(currLeft, currTop, currRight,
currTop + mCurrText.getMeasuredHeight());
final int prevLeft = Math.min(paddingLeft, currLeft - mScaledTextSpacing - prevWidth);
mPrevText.layout(prevLeft, prevTop, prevLeft + prevWidth,
prevTop + mPrevText.getMeasuredHeight());
final int nextLeft = Math.max(stripWidth - paddingRight - nextWidth,
currRight + mScaledTextSpacing);
mNextText.layout(nextLeft, nextTop, nextLeft + nextWidth,
nextTop + mNextText.getMeasuredHeight());
mLastKnownPositionOffset = positionOffset;
mUpdatingPositions = false;
}
private void initView(Context context) {
RelativeLayout pointContainerRl = new RelativeLayout(context);
if (Build.VERSION.SDK_INT >= 16) {
pointContainerRl.setBackground(mPointContainerBackgroundDrawable);
} else {
pointContainerRl.setBackgroundDrawable(mPointContainerBackgroundDrawable);
}
pointContainerRl.setPadding(mPointContainerLeftRightPadding, mPointTopBottomMargin, mPointContainerLeftRightPadding, mPointTopBottomMargin);
LayoutParams pointContainerLp = new LayoutParams(RMP, RWC);
// 处理圆点在顶部还是底部
if ((mPointGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.TOP) {
pointContainerLp.addRule(RelativeLayout.ALIGN_PARENT_TOP);
} else {
pointContainerLp.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
}
addView(pointContainerRl, pointContainerLp);
LayoutParams indicatorLp = new LayoutParams(RWC, RWC);
indicatorLp.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
if (mIsNumberIndicator) {
mNumberIndicatorTv = new TextView(context);
mNumberIndicatorTv.setId(R.id.banner_indicatorId);
mNumberIndicatorTv.setGravity(Gravity.CENTER_VERTICAL);
mNumberIndicatorTv.setSingleLine(true);
mNumberIndicatorTv.setEllipsize(TextUtils.TruncateAt.END);
mNumberIndicatorTv.setTextColor(mNumberIndicatorTextColor);
mNumberIndicatorTv.setTextSize(TypedValue.COMPLEX_UNIT_PX, mNumberIndicatorTextSize);
mNumberIndicatorTv.setVisibility(View.INVISIBLE);
if (mNumberIndicatorBackground != null) {
if (Build.VERSION.SDK_INT >= 16) {
mNumberIndicatorTv.setBackground(mNumberIndicatorBackground);
} else {
mNumberIndicatorTv.setBackgroundDrawable(mNumberIndicatorBackground);
}
}
pointContainerRl.addView(mNumberIndicatorTv, indicatorLp);
} else {
mPointRealContainerLl = new LinearLayout(context);
mPointRealContainerLl.setId(R.id.banner_indicatorId);
mPointRealContainerLl.setOrientation(LinearLayout.HORIZONTAL);
mPointRealContainerLl.setGravity(Gravity.CENTER_VERTICAL);
pointContainerRl.addView(mPointRealContainerLl, indicatorLp);
}
LayoutParams tipLp = new LayoutParams(RMP, RWC);
tipLp.addRule(CENTER_VERTICAL);
mTipTv = new TextView(context);
mTipTv.setGravity(Gravity.CENTER_VERTICAL);
mTipTv.setSingleLine(true);
mTipTv.setEllipsize(TextUtils.TruncateAt.END);
mTipTv.setTextColor(mTipTextColor);
mTipTv.setTextSize(TypedValue.COMPLEX_UNIT_PX, mTipTextSize);
pointContainerRl.addView(mTipTv, tipLp);
int horizontalGravity = mPointGravity & Gravity.HORIZONTAL_GRAVITY_MASK;
// 处理圆点在左边、右边还是水平居中
if (horizontalGravity == Gravity.LEFT) {
indicatorLp.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
tipLp.addRule(RelativeLayout.RIGHT_OF, R.id.banner_indicatorId);
mTipTv.setGravity(Gravity.CENTER_VERTICAL | Gravity.RIGHT);
} else if (horizontalGravity == Gravity.RIGHT) {
indicatorLp.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
tipLp.addRule(RelativeLayout.LEFT_OF, R.id.banner_indicatorId);
} else {
indicatorLp.addRule(RelativeLayout.CENTER_HORIZONTAL);
tipLp.addRule(RelativeLayout.LEFT_OF, R.id.banner_indicatorId);
}
showPlaceholder();
}
void updateTextPositions(int position, float positionOffset, boolean force) {
if (position != mLastKnownCurrentPage) {
updateText(position, mPager.getAdapter());
} else if (!force && positionOffset == mLastKnownPositionOffset) {
return;
}
mUpdatingPositions = true;
final int prevWidth = mPrevText.getMeasuredWidth();
final int currWidth = mCurrText.getMeasuredWidth();
final int nextWidth = mNextText.getMeasuredWidth();
final int halfCurrWidth = currWidth / 2;
final int stripWidth = getWidth();
final int stripHeight = getHeight();
final int paddingLeft = getPaddingLeft();
final int paddingRight = getPaddingRight();
final int paddingTop = getPaddingTop();
final int paddingBottom = getPaddingBottom();
final int textPaddedLeft = paddingLeft + halfCurrWidth;
final int textPaddedRight = paddingRight + halfCurrWidth;
final int contentWidth = stripWidth - textPaddedLeft - textPaddedRight;
float currOffset = positionOffset + 0.5f;
if (currOffset > 1.f) {
currOffset -= 1.f;
}
final int currCenter = stripWidth - textPaddedRight - (int) (contentWidth * currOffset);
final int currLeft = currCenter - currWidth / 2;
final int currRight = currLeft + currWidth;
final int prevBaseline = mPrevText.getBaseline();
final int currBaseline = mCurrText.getBaseline();
final int nextBaseline = mNextText.getBaseline();
final int maxBaseline = Math.max(Math.max(prevBaseline, currBaseline), nextBaseline);
final int prevTopOffset = maxBaseline - prevBaseline;
final int currTopOffset = maxBaseline - currBaseline;
final int nextTopOffset = maxBaseline - nextBaseline;
final int alignedPrevHeight = prevTopOffset + mPrevText.getMeasuredHeight();
final int alignedCurrHeight = currTopOffset + mCurrText.getMeasuredHeight();
final int alignedNextHeight = nextTopOffset + mNextText.getMeasuredHeight();
final int maxTextHeight = Math.max(Math.max(alignedPrevHeight, alignedCurrHeight),
alignedNextHeight);
final int vgrav = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
int prevTop;
int currTop;
int nextTop;
switch (vgrav) {
default:
case Gravity.TOP:
prevTop = paddingTop + prevTopOffset;
currTop = paddingTop + currTopOffset;
nextTop = paddingTop + nextTopOffset;
break;
case Gravity.CENTER_VERTICAL:
final int paddedHeight = stripHeight - paddingTop - paddingBottom;
final int centeredTop = (paddedHeight - maxTextHeight) / 2;
prevTop = centeredTop + prevTopOffset;
currTop = centeredTop + currTopOffset;
nextTop = centeredTop + nextTopOffset;
break;
case Gravity.BOTTOM:
final int bottomGravTop = stripHeight - paddingBottom - maxTextHeight;
prevTop = bottomGravTop + prevTopOffset;
currTop = bottomGravTop + currTopOffset;
nextTop = bottomGravTop + nextTopOffset;
break;
}
mCurrText.layout(currLeft, currTop, currRight,
currTop + mCurrText.getMeasuredHeight());
final int prevLeft = Math.min(paddingLeft, currLeft - mScaledTextSpacing - prevWidth);
mPrevText.layout(prevLeft, prevTop, prevLeft + prevWidth,
prevTop + mPrevText.getMeasuredHeight());
final int nextLeft = Math.max(stripWidth - paddingRight - nextWidth,
currRight + mScaledTextSpacing);
mNextText.layout(nextLeft, nextTop, nextLeft + nextWidth,
nextTop + mNextText.getMeasuredHeight());
mLastKnownPositionOffset = positionOffset;
mUpdatingPositions = false;
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
final Drawable checkMarkDrawable = mCheckMarkDrawable;
if (checkMarkDrawable != null) {
final int verticalGravity = getGravity() & Gravity.VERTICAL_GRAVITY_MASK;
final int height = checkMarkDrawable.getIntrinsicHeight();
int y = 0;
switch (verticalGravity) {
case Gravity.BOTTOM:
y = getHeight() - height;
break;
case Gravity.CENTER_VERTICAL:
y = (getHeight() - height) / 2;
break;
}
final boolean checkMarkAtStart = isCheckMarkAtStart();
final int width = getWidth();
final int top = y;
final int bottom = top + height;
final int left;
final int right;
if (checkMarkAtStart) {
left = mBasePadding;
right = left + mCheckMarkWidth;
} else {
right = width - mBasePadding;
left = right - mCheckMarkWidth;
}
checkMarkDrawable.setBounds(mScrollX + left, top, mScrollX + right, bottom);
checkMarkDrawable.draw(canvas);
final Drawable background = getBackground();
if (background != null) {
background.setHotspotBounds(mScrollX + left, top, mScrollX + right, bottom);
}
}
}
private static int getMeasureSpec(View view, int parentMeasureSpec, boolean horizontal) {
int parentLength = MeasureSpec.getSize(parentMeasureSpec);
int parentSpecMode = MeasureSpec.getMode(parentMeasureSpec);
CommonLayoutParams lp = (CommonLayoutParams) view.getLayoutParams();
final int margins = horizontal ? lp.leftMargin + lp.rightMargin : lp.topMargin + lp.bottomMargin;
int resultSize = 0;
int resultMode = MeasureSpec.UNSPECIFIED;
int measureLength = Math.max(0, parentLength - margins);
int childLength = horizontal ? lp.width : lp.height;
// We want a specific size... let be it.
if (childLength >= 0) {
if (parentSpecMode != MeasureSpec.UNSPECIFIED) {
resultSize = Math.min(parentLength, childLength);
} else {
resultSize = childLength;
}
resultMode = MeasureSpec.EXACTLY;
} else {
switch (parentSpecMode) {
// Parent has imposed an exact size on us
case MeasureSpec.EXACTLY:
resultSize = measureLength;
int gravity = LayoutBase.getGravity(view);
boolean stretched;
if (horizontal) {
final int horizontalGravity = Gravity.getAbsoluteGravity(gravity, view.getLayoutDirection()) & Gravity.HORIZONTAL_GRAVITY_MASK;
stretched = horizontalGravity == Gravity.FILL_HORIZONTAL;
} else {
final int verticalGravity = gravity & Gravity.VERTICAL_GRAVITY_MASK;
stretched = verticalGravity == Gravity.FILL_VERTICAL;
}
// if stretched - view wants to be our size. So be it.
// else - view wants to determine its own size. It can't be bigger than us.
resultMode = stretched ? MeasureSpec.EXACTLY : MeasureSpec.AT_MOST;
break;
// Parent has imposed a maximum size on us
case MeasureSpec.AT_MOST:
resultSize = measureLength;
resultMode = MeasureSpec.AT_MOST;
break;
case MeasureSpec.UNSPECIFIED:
resultSize = 0;
resultMode = MeasureSpec.UNSPECIFIED;
break;
}
}
return MeasureSpec.makeMeasureSpec(resultSize, resultMode);
}