Java View.getVisibility方法代码示例

import android.view.View; //导入方法依赖的package包/类
@Override
public void addView(View child, int index, ViewGroup.LayoutParams params) {
    if (!checkLayoutParams(params)) {
        params = generateLayoutParams(params);
    }
    final LayoutParams lp = (LayoutParams) params;
    lp.isDecor |= child instanceof Decor;
    if (mInLayout) {
        if (lp != null && lp.isDecor) {
            throw new IllegalStateException("Cannot add pager decor view during layout");
        }
        lp.needsMeasure = true;
        addViewInLayout(child, index, params);
    } else {
        super.addView(child, index, params);
    }

    if (USE_CACHE) {
        if (child.getVisibility() != GONE) {
            child.setDrawingCacheEnabled(mScrollingCacheEnabled);
        } else {
            child.setDrawingCacheEnabled(false);
        }
    }
}
 

import android.view.View; //导入方法依赖的package包/类
/**
 * Starts showing a context menu for {@code view} based on {@code params}.
 * @param contentViewCore The {@link ContentViewCore} to show the menu to.
 * @param params          The {@link ContextMenuParams} that indicate what menu items to show.
 */
@CalledByNative
private void showContextMenu(ContentViewCore contentViewCore, ContextMenuParams params) {
    final View view = contentViewCore.getContainerView();

    if (view == null
            || view.getVisibility() != View.VISIBLE
            || view.getParent() == null) {
        return;
    }

    mCurrentContextMenuParams = params;

    view.setOnCreateContextMenuListener(this);
    if (view.showContextMenu()) {
        WebContents webContents = contentViewCore.getWebContents();
        RecordHistogram.recordBooleanHistogram(
                "ContextMenu.Shown", webContents != null);
    }
}
 

import android.view.View; //导入方法依赖的package包/类
private int getAllChildrenHeightSum(boolean withPadding, boolean withMargin) {
    final int childCount = getChildCount();
    int height = 0;
    for (int i = 0; i < childCount; i++) {
        View child = getChildAt(i);
        if (child.getVisibility() == GONE)
            continue;

        int margin = ((MarginLayoutParams) child.getLayoutParams()).topMargin +
                ((MarginLayoutParams) child.getLayoutParams()).bottomMargin;

        height += child.getMeasuredHeight() +
                (withPadding ? child.getPaddingTop() + child.getPaddingBottom() : 0) +
                (withMargin ? margin : 0);
    }
    return Math.max(height, 0);
}
 

import android.view.View; //导入方法依赖的package包/类
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
    inLayout = true;
    int width = r - l;
    int height = b - t;
    int childCount = getChildCount();
    for (int i = 0; i < childCount; i++) {
        View child = getChildAt(i);

        if (child.getVisibility() == GONE) {
            continue;
        }

        int x = (width - child.getMeasuredWidth()) / 2;
        int y;
        if (showAtCenter) {
            y = (height / 2 - child.getMeasuredHeight()) / 2;
        } else {
            y = (height - child.getMeasuredHeight()) / 2;
        }
        child.layout(x, y, x + child.getMeasuredWidth(), y + child.getMeasuredHeight());
    }
    inLayout = false;
}
 

import android.view.View; //导入方法依赖的package包/类
private void setScrollingCacheEnabled(boolean enabled)
{
    if (mScrollingCacheEnabled != enabled)
    {
        mScrollingCacheEnabled = enabled;
        if (USE_CACHE)
        {
            final int size = getChildCount();
            for (int i = 0; i < size; ++i)
            {
                final View child = getChildAt(i);
                if (child.getVisibility() != GONE)
                {
                    child.setDrawingCacheEnabled(enabled);
                }
            }
        }
    }
}
 

import android.view.View; //导入方法依赖的package包/类
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
    final int count = getChildCount();
    for (int i = 0; i < count; i++) {
        final View child = getChildAt(i);
        if (child.getVisibility() != View.GONE) {
            child.layout(0, 0,  r - l,  b - t);

        }
    }
}
 

import android.view.View; //导入方法依赖的package包/类
@Override
public boolean onTouchEvent(MotionEvent ev) {
    if (mLastY == -1) {
        mLastY = ev.getRawY();
    }
    switch (ev.getAction()) {
        case MotionEvent.ACTION_DOWN:
            mLastY = ev.getRawY();
            break;
        case MotionEvent.ACTION_MOVE:
            final float deltaY = ev.getRawY() - mLastY;
            mLastY = ev.getRawY();
            if (isOnTop() && pullRefreshEnabled) {
                mRefreshHeader.onMove(deltaY / DRAG_RATE);
                if (mRefreshHeader.getVisiableHeight() > 0 && mRefreshHeader.getState() < YunRefreshHeader.STATE_REFRESHING) {
                    return false;
                }
            }
            break;
        default:
            mLastY = -1; // reset
            if (isOnTop() && pullRefreshEnabled) {
                if (mRefreshHeader.releaseAction()) {
                    if (mLoadingListener != null) {
                        mLoadingListener.onRefresh();
                        isnomore = false;
                        previousTotal = 0;
                        final View footView = mFootViews.get(0);
                        if (footView instanceof LoadingMoreFooter) {
                            if (footView.getVisibility() != View.GONE) {
                                footView.setVisibility(View.GONE);
                            }
                        }
                    }
                }
            }
            break;
    }
    return super.onTouchEvent(ev);
}
 

import android.view.View; //导入方法依赖的package包/类
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
    int top = getPaddingTop();//开始布局子view的 top距离
    int left = getPaddingLeft();//开始布局子view的 left距离

    int lineNum = mAllViews.size();//行数
    List<View> lineView;
    int lineHeight;
    for (int i = 0; i < lineNum; i++) {
        lineView = mAllViews.get(i);
        lineHeight = mLineHeight.get(i);

        for (int j = 0; j < lineView.size(); j++) {
            View child = lineView.get(j);
            if (child.getVisibility() == View.GONE) {
                continue;
            }

            LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) child.getLayoutParams();
            int ld = left + params.leftMargin;
            int td = top + params.topMargin;
            int rd = ld + child.getMeasuredWidth();//不需要加上 params.rightMargin,
            int bd = td + child.getMeasuredHeight();//不需要加上 params.bottomMargin, 因为在 onMeasure , 中已经加在了 lineHeight 中
            child.layout(ld, td, rd, bd);

            left += child.getMeasuredWidth() + params.leftMargin + params.rightMargin;//因为在 这里添加了;
        }

        left = getPaddingLeft();
        top += lineHeight;
    }
}
 

import android.view.View; //导入方法依赖的package包/类
@Override
public void adjustLayout(int startPosition, int endPosition, LayoutManagerHelper helper) {
    if (requireLayoutView()) {
        View refer = null;
        Rect tempRect = new Rect();
        final OrientationHelperEx orientationHelper = helper.getMainOrientationHelper();
        for (int i = 0; i < helper.getChildCount(); i++) {
            refer = helper.getChildAt(i);
            int anchorPos = helper.getPosition(refer);
            if (getRange().contains(anchorPos)) {
                if (refer.getVisibility() == View.GONE) {
                    tempRect.setEmpty();
                } else {
                    final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams)
                        refer.getLayoutParams();
                    if (helper.getOrientation() == VirtualLayoutManager.VERTICAL) {
                        tempRect.union(helper.getDecoratedLeft(refer) - params.leftMargin,
                            orientationHelper.getDecoratedStart(refer),
                            helper.getDecoratedRight(refer) + params.rightMargin,
                            orientationHelper.getDecoratedEnd(refer));
                    } else {
                        tempRect.union(orientationHelper.getDecoratedStart(refer),
                            helper.getDecoratedTop(refer) - params.topMargin, orientationHelper.getDecoratedEnd(refer),
                            helper.getDecoratedBottom(refer) + params.bottomMargin);
                    }
                }
            }
        }
        if (!tempRect.isEmpty()) {
            mLayoutRegion.set(tempRect.left - mPaddingLeft, tempRect.top - mPaddingTop,
                tempRect.right + mPaddingRight, tempRect.bottom + mPaddingBottom);
        } else {
            mLayoutRegion.setEmpty();
        }
        if (mLayoutView != null) {
            mLayoutView.layout(mLayoutRegion.left, mLayoutRegion.top, mLayoutRegion.right, mLayoutRegion.bottom);
        }
    }
}
 

import android.view.View; //导入方法依赖的package包/类
public static Animation expand(final View v, int duration, boolean startAnim) {
    if (v.getVisibility() == View.VISIBLE)
        return null;

    v.measure(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
    final int targetHeight = v.getMeasuredHeight();

    v.getLayoutParams().height = 0;
    v.setVisibility(View.VISIBLE);
    Animation a = new Animation() {
        @Override
        protected void applyTransformation(float interpolatedTime, Transformation t) {
            v.getLayoutParams().height = interpolatedTime == 1
                    ? ViewGroup.LayoutParams.WRAP_CONTENT
                    : (int) (targetHeight * interpolatedTime);
            v.requestLayout();
        }

        @Override
        public boolean willChangeBounds() {
            return true;
        }

    };

    a.setDuration(duration);
    if (startAnim)
        v.startAnimation(a);
    return a;
}
 

import android.view.View; //导入方法依赖的package包/类
/**
 * We only want the current page that is being shown to be focusable.
 */
@Override
public void addFocusables(ArrayList<View> views, int direction, int focusableMode) {
    final int focusableCount = views.size();

    final int descendantFocusability = getDescendantFocusability();

    if (descendantFocusability != FOCUS_BLOCK_DESCENDANTS) {
        for (int i = 0; i < getChildCount(); i++) {
            final View child = getChildAt(i);
            if (child.getVisibility() == VISIBLE) {
                ViewPager.ItemInfo ii = infoForChild(child);
                if (ii != null && ii.position == mCurItem) {
                    child.addFocusables(views, direction, focusableMode);
                }
            }
        }
    }

    // we add ourselves (if focusable) in all cases except for when we are
    // FOCUS_AFTER_DESCENDANTS and there are some descendants focusable.  this is
    // to avoid the focus search finding layouts when a more precise search
    // among the focusable children would be more interesting.
    if (descendantFocusability != FOCUS_AFTER_DESCENDANTS
            || (focusableCount == views.size())) { // No focusable descendants
        // Note that we can't call the superclass here, because it will
        // add all views in.  So we need to do the same thing View does.
        if (!isFocusable()) {
            return;
        }
        if ((focusableMode & FOCUSABLES_TOUCH_MODE) == FOCUSABLES_TOUCH_MODE
                && isInTouchMode() && !isFocusableInTouchMode()) {
            return;
        }
        if (views != null) {
            views.add(this);
        }
    }
}
 

import android.view.View; //导入方法依赖的package包/类
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
    final int parentLeft = getPaddingLeft();
    final int parentRight = r - l - getPaddingRight();
    final int parentTop = getPaddingTop();
    final int parentBottom = b - t - getPaddingBottom();

    int childLeft = parentLeft;
    int childTop = parentTop;

    int rowMaxHeight = 0;

    final int count = getChildCount();
    for (int i = 0; i < count; i++) {
        final View child = getChildAt(i);
        final int width = child.getMeasuredWidth();
        final int height = child.getMeasuredHeight();

        if (child.getVisibility() != GONE) {
            if (childLeft + width > parentRight) { // Next line
                childLeft = parentLeft;
                childTop += rowMaxHeight + verticalSpacing;
                rowMaxHeight = height;
            } else {
                rowMaxHeight = Math.max(rowMaxHeight, height);
            }
            child.layout(childLeft, childTop, childLeft + width, childTop + height);

            childLeft += width + horizontalSpacing;
        }
    }
}
 

import android.view.View; //导入方法依赖的package包/类
private void setScrollingCacheEnabled(boolean enabled) {
    if (mScrollingCacheEnabled != enabled) {
        mScrollingCacheEnabled = enabled;
        if (USE_CACHE) {
            final int size = getChildCount();
            for (int i = 0; i < size; ++i) {
                final View child = getChildAt(i);
                if (child.getVisibility() != GONE) {
                    child.setDrawingCacheEnabled(enabled);
                }
            }
        }
    }
}
 

import android.view.View; //导入方法依赖的package包/类
/**
 * 添加半透明矩形条
 *
 * @param activity       需要设置的 activity
 * @param statusBarAlpha 透明值
 */
private static void addTranslucentView(Activity activity, @IntRange(from = 0, to = 255) int statusBarAlpha) {
    ViewGroup contentView = (ViewGroup) activity.findViewById(android.R.id.content);
    View fakeTranslucentView = contentView.findViewWithTag(FAKE_TRANSLUCENT_VIEW_TAG);
    if (fakeTranslucentView != null) {
        if (fakeTranslucentView.getVisibility() == View.GONE) {
            fakeTranslucentView.setVisibility(View.VISIBLE);
        }
        fakeTranslucentView.setBackgroundColor(Color.argb(statusBarAlpha, 0, 0, 0));
    } else {
        contentView.addView(createTranslucentStatusBarView(activity, statusBarAlpha));
    }
}
 

import android.view.View; //导入方法依赖的package包/类
@Override
public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) {
    final AccessibilityNodeInfoCompat superNode = AccessibilityNodeInfoCompat.obtain(info);
    super.onInitializeAccessibilityNodeInfo(host, superNode);
    copyNodeInfoNoChildren(info, superNode);
    superNode.recycle();

    info.setClassName(BGASwipeBackLayout2.class.getName());
    info.setSource(host);

    final ViewParent parent = ViewCompat.getParentForAccessibility(host);
    if (parent instanceof View) {
        info.setParent((View) parent);
    }

    // This is a best-approximation of addChildrenForAccessibility()
    // that accounts for filtering.
    final int childCount = getChildCount();
    for (int i = 0; i < childCount; i++) {
        final View child = getChildAt(i);
        if (!filter(child) && (child.getVisibility() == View.VISIBLE)) {
            // Force importance to "yes" since we can't read the value.
            ViewCompat.setImportantForAccessibility(
                    child, ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_YES);
            info.addChild(child);
        }
    }
}