Example usage for android.view Gravity LEFT

List of usage examples for android.view Gravity LEFT

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Introduction

In this page you can find the example usage for android.view Gravity LEFT.

Prototype

int LEFT

To view the source code for android.view Gravity LEFT.

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Document

Push object to the left of its container, not changing its size.

Usage

From source file:ca.co.rufus.androidboilerplate.ui.DebugDrawerLayout.java

boolean isDrawerView(View child) {
    final int gravity = ((LayoutParams) child.getLayoutParams()).gravity;
    final int absGravity = GravityCompat.getAbsoluteGravity(gravity, ViewCompat.getLayoutDirection(child));
    return (absGravity & (Gravity.LEFT | Gravity.RIGHT)) != 0;
}

From source file:com.example.view.VerticalViewPager.java

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    // For simple implementation, or internal size is always 0.
    // We depend on the container to specify the layout size of
    // our view. We can't really know what it is since we will be
    // adding and removing different arbitrary views and do not
    // want the layout to change as this happens.
    setMeasuredDimension(getDefaultSize(0, widthMeasureSpec), getDefaultSize(0, heightMeasureSpec));

    // Children are just made to fill our space.
    int childWidthSize = getMeasuredWidth() - getPaddingLeft() - getPaddingRight();
    int childHeightSize = getMeasuredHeight() - getPaddingTop() - getPaddingBottom();

    /*/* w w  w .j ava  2  s . c om*/
     * Make sure all children have been properly measured. Decor views
     * first. Right now we cheat and make this less complicated by assuming
     * decor views won't intersect. We will pin to edges based on gravity.
     */
    int size = getChildCount();
    for (int i = 0; i < size; ++i) {
        final View child = getChildAt(i);
        if (child.getVisibility() != GONE) {
            final LayoutParams lp = (LayoutParams) child.getLayoutParams();
            if (lp != null && lp.isDecor) {
                final int hgrav = lp.gravity & Gravity.HORIZONTAL_GRAVITY_MASK;
                final int vgrav = lp.gravity & Gravity.VERTICAL_GRAVITY_MASK;
                Log.d(TAG, "gravity: " + lp.gravity + " hgrav: " + hgrav + " vgrav: " + vgrav);
                int widthMode = MeasureSpec.AT_MOST;
                int heightMode = MeasureSpec.AT_MOST;
                boolean consumeVertical = vgrav == Gravity.TOP || vgrav == Gravity.BOTTOM;
                boolean consumeHorizontal = hgrav == Gravity.LEFT || hgrav == Gravity.RIGHT;

                if (consumeVertical) {
                    widthMode = MeasureSpec.EXACTLY;
                } else if (consumeHorizontal) {
                    heightMode = MeasureSpec.EXACTLY;
                } /* end of if */

                final int widthSpec = MeasureSpec.makeMeasureSpec(childWidthSize, widthMode);
                final int heightSpec = MeasureSpec.makeMeasureSpec(childHeightSize, heightMode);
                child.measure(widthSpec, heightSpec);

                if (consumeVertical) {
                    childHeightSize -= child.getMeasuredHeight();
                } else if (consumeHorizontal) {
                    childWidthSize -= child.getMeasuredWidth();
                } /* end of if */
            } /* end of if */
        } /* end of if */
    } /* end of for */

    mChildWidthMeasureSpec = MeasureSpec.makeMeasureSpec(childWidthSize, MeasureSpec.EXACTLY);
    mChildHeightMeasureSpec = MeasureSpec.makeMeasureSpec(childHeightSize, MeasureSpec.EXACTLY);

    // Make sure we have created all fragments that we need to have shown.
    mInLayout = true;
    populate();
    mInLayout = false;

    // Page views next.
    size = getChildCount();
    for (int i = 0; i < size; ++i) {
        final View child = getChildAt(i);
        if (child.getVisibility() != GONE) {
            if (DEBUG)
                Log.v(TAG, "Measuring #" + i + " " + child + ": " + mChildWidthMeasureSpec);

            final LayoutParams lp = (LayoutParams) child.getLayoutParams();
            if (lp == null || !lp.isDecor) {
                child.measure(mChildWidthMeasureSpec, mChildHeightMeasureSpec);
            } /* end of if */
        } /* end of if */
    } /* end of for */
}

From source file:com.asksven.betterbatterystats.StatsActivity.java

public Dialog getShareDialog() {

    final ArrayList<Integer> selectedSaveActions = new ArrayList<Integer>();

    AlertDialog.Builder builder = new AlertDialog.Builder(this);

    SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);
    boolean saveDumpfile = sharedPrefs.getBoolean("save_dumpfile", true);
    boolean saveLogcat = sharedPrefs.getBoolean("save_logcat", false);
    boolean saveDmesg = sharedPrefs.getBoolean("save_dmesg", false);

    if (saveDumpfile) {
        selectedSaveActions.add(0);/*ww  w . java2 s  . c om*/
    }
    if (saveLogcat) {
        selectedSaveActions.add(1);
    }
    if (saveDmesg) {
        selectedSaveActions.add(2);
    }

    //----
    LinearLayout layout = new LinearLayout(this);
    LinearLayout.LayoutParams parms = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
            LinearLayout.LayoutParams.WRAP_CONTENT);
    layout.setOrientation(LinearLayout.VERTICAL);
    layout.setLayoutParams(parms);

    layout.setGravity(Gravity.CLIP_VERTICAL);
    layout.setPadding(2, 2, 2, 2);

    final TextView editTitle = new TextView(StatsActivity.this);
    editTitle.setText(R.string.share_dialog_edit_title);
    editTitle.setPadding(40, 40, 40, 40);
    editTitle.setGravity(Gravity.LEFT);
    editTitle.setTextSize(20);

    final EditText editDescription = new EditText(StatsActivity.this);

    LinearLayout.LayoutParams tv1Params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
            LinearLayout.LayoutParams.WRAP_CONTENT);
    tv1Params.bottomMargin = 5;
    layout.addView(editTitle, tv1Params);
    layout.addView(editDescription, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
            LinearLayout.LayoutParams.WRAP_CONTENT));

    //----

    // Set the dialog title
    builder.setTitle(R.string.title_share_dialog)
            .setMultiChoiceItems(R.array.saveAsLabels, new boolean[] { saveDumpfile, saveLogcat, saveDmesg },
                    new DialogInterface.OnMultiChoiceClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which, boolean isChecked) {
                            if (isChecked) {
                                // If the user checked the item, add it to the
                                // selected items
                                selectedSaveActions.add(which);
                            } else if (selectedSaveActions.contains(which)) {
                                // Else, if the item is already in the array,
                                // remove it
                                selectedSaveActions.remove(Integer.valueOf(which));
                            }
                        }
                    })
            .setView(layout)
            // Set the action buttons
            .setPositiveButton(R.string.label_button_share, new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int id) {
                    ArrayList<Uri> attachements = new ArrayList<Uri>();

                    Reference myReferenceFrom = ReferenceStore.getReferenceByName(m_refFromName,
                            StatsActivity.this);
                    Reference myReferenceTo = ReferenceStore.getReferenceByName(m_refToName,
                            StatsActivity.this);

                    Reading reading = new Reading(StatsActivity.this, myReferenceFrom, myReferenceTo);

                    // save as text is selected
                    if (selectedSaveActions.contains(0)) {
                        attachements.add(reading.writeDumpfile(StatsActivity.this,
                                editDescription.getText().toString()));
                    }
                    // save logcat if selected
                    if (selectedSaveActions.contains(1)) {
                        attachements.add(StatsProvider.getInstance().writeLogcatToFile());
                    }
                    // save dmesg if selected
                    if (selectedSaveActions.contains(2)) {
                        attachements.add(StatsProvider.getInstance().writeDmesgToFile());
                    }

                    if (!attachements.isEmpty()) {
                        Intent shareIntent = new Intent();
                        shareIntent.setAction(Intent.ACTION_SEND_MULTIPLE);
                        shareIntent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, attachements);
                        shareIntent.setType("text/*");
                        startActivity(Intent.createChooser(shareIntent, "Share info to.."));
                    }
                }
            }).setNeutralButton(R.string.label_button_save, new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int id) {

                    try {
                        Reference myReferenceFrom = ReferenceStore.getReferenceByName(m_refFromName,
                                StatsActivity.this);
                        Reference myReferenceTo = ReferenceStore.getReferenceByName(m_refToName,
                                StatsActivity.this);

                        Reading reading = new Reading(StatsActivity.this, myReferenceFrom, myReferenceTo);

                        // save as text is selected
                        if (selectedSaveActions.contains(0)) {
                            reading.writeDumpfile(StatsActivity.this, editDescription.getText().toString());
                        }
                        // save logcat if selected
                        if (selectedSaveActions.contains(1)) {
                            StatsProvider.getInstance().writeLogcatToFile();
                        }
                        // save dmesg if selected
                        if (selectedSaveActions.contains(2)) {
                            StatsProvider.getInstance().writeDmesgToFile();
                        }

                        Snackbar.make(findViewById(android.R.id.content), getString(R.string.info_files_written)
                                + ": " + StatsProvider.getWritableFilePath(), Snackbar.LENGTH_LONG).show();
                    } catch (Exception e) {
                        Log.e(TAG, "an error occured writing files: " + e.getMessage());
                        Snackbar.make(findViewById(android.R.id.content), R.string.info_files_write_error,
                                Snackbar.LENGTH_LONG).show();
                    }

                }
            }).setNegativeButton(R.string.label_button_cancel, new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int id) {
                    // do nothing
                }
            });

    return builder.create();
}

From source file:android.support.v7.internal.widget.ActionBarView.java

@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
    int x = getPaddingLeft();
    final int y = getPaddingTop();
    final int contentHeight = b - t - getPaddingTop() - getPaddingBottom();

    if (contentHeight <= 0) {
        // Nothing to do if we can't see anything.
        return;/*  w  ww  .  j  a v  a 2  s. c o m*/
    }

    HomeView homeLayout = mExpandedActionView != null ? mExpandedHomeLayout : mHomeLayout;
    if (homeLayout.getVisibility() != GONE) {
        final int leftOffset = homeLayout.getLeftOffset();
        x += positionChild(homeLayout, x + leftOffset, y, contentHeight) + leftOffset;
    }

    if (mExpandedActionView == null) {
        final boolean showTitle = mTitleLayout != null && mTitleLayout.getVisibility() != GONE
                && (mDisplayOptions & ActionBar.DISPLAY_SHOW_TITLE) != 0;
        if (showTitle) {
            x += positionChild(mTitleLayout, x, y, contentHeight);
        }

        switch (mNavigationMode) {
        case ActionBar.NAVIGATION_MODE_STANDARD:
            break;
        case ActionBar.NAVIGATION_MODE_LIST:
            if (mListNavLayout != null) {
                if (showTitle) {
                    x += mItemPadding;
                }
                x += positionChild(mListNavLayout, x, y, contentHeight) + mItemPadding;
            }
            break;
        case ActionBar.NAVIGATION_MODE_TABS:
            if (mTabScrollView != null) {
                if (showTitle) {
                    x += mItemPadding;
                }
                x += positionChild(mTabScrollView, x, y, contentHeight) + mItemPadding;
            }
            break;
        }
    }

    int menuLeft = r - l - getPaddingRight();
    if (mMenuView != null && mMenuView.getParent() == this) {
        positionChildInverse(mMenuView, menuLeft, y, contentHeight);
        menuLeft -= mMenuView.getMeasuredWidth();
    }

    if (mIndeterminateProgressView != null && mIndeterminateProgressView.getVisibility() != GONE) {
        positionChildInverse(mIndeterminateProgressView, menuLeft, y, contentHeight);
        menuLeft -= mIndeterminateProgressView.getMeasuredWidth();
    }

    View customView = null;
    if (mExpandedActionView != null) {
        customView = mExpandedActionView;
    } else if ((mDisplayOptions & ActionBar.DISPLAY_SHOW_CUSTOM) != 0 && mCustomNavView != null) {
        customView = mCustomNavView;
    }
    if (customView != null) {
        ViewGroup.LayoutParams lp = customView.getLayoutParams();
        final ActionBar.LayoutParams ablp = lp instanceof ActionBar.LayoutParams ? (ActionBar.LayoutParams) lp
                : null;

        final int gravity = ablp != null ? ablp.gravity : DEFAULT_CUSTOM_GRAVITY;
        final int navWidth = customView.getMeasuredWidth();

        int topMargin = 0;
        int bottomMargin = 0;
        if (ablp != null) {
            x += ablp.leftMargin;
            menuLeft -= ablp.rightMargin;
            topMargin = ablp.topMargin;
            bottomMargin = ablp.bottomMargin;
        }

        int hgravity = gravity & Gravity.HORIZONTAL_GRAVITY_MASK;
        // See if we actually have room to truly center; if not push against left or right.
        if (hgravity == Gravity.CENTER_HORIZONTAL) {
            final int centeredLeft = (getWidth() - navWidth) / 2;
            if (centeredLeft < x) {
                hgravity = Gravity.LEFT;
            } else if (centeredLeft + navWidth > menuLeft) {
                hgravity = Gravity.RIGHT;
            }
        } else if (gravity == -1) {
            hgravity = Gravity.LEFT;
        }

        int xpos = 0;
        switch (hgravity) {
        case Gravity.CENTER_HORIZONTAL:
            xpos = (getWidth() - navWidth) / 2;
            break;
        case Gravity.LEFT:
            xpos = x;
            break;
        case Gravity.RIGHT:
            xpos = menuLeft - navWidth;
            break;
        }

        int vgravity = gravity & Gravity.VERTICAL_GRAVITY_MASK;

        if (gravity == -1) {
            vgravity = Gravity.CENTER_VERTICAL;
        }

        int ypos = 0;
        switch (vgravity) {
        case Gravity.CENTER_VERTICAL:
            final int paddedTop = getPaddingTop();
            final int paddedBottom = getHeight() - getPaddingBottom();
            ypos = ((paddedBottom - paddedTop) - customView.getMeasuredHeight()) / 2;
            break;
        case Gravity.TOP:
            ypos = getPaddingTop() + topMargin;
            break;
        case Gravity.BOTTOM:
            ypos = getHeight() - getPaddingBottom() - customView.getMeasuredHeight() - bottomMargin;
            break;
        }
        final int customWidth = customView.getMeasuredWidth();
        customView.layout(xpos, ypos, xpos + customWidth, ypos + customView.getMeasuredHeight());
        x += customWidth;
    }

    if (mProgressView != null) {
        mProgressView.bringToFront();
        final int halfProgressHeight = mProgressView.getMeasuredHeight() / 2;
        mProgressView.layout(mProgressBarPadding, -halfProgressHeight,
                mProgressBarPadding + mProgressView.getMeasuredWidth(), halfProgressHeight);
    }
}

From source file:com.aidy.bottomdrawerlayout.AllDrawerLayout.java

boolean isDrawerView(View child) {
    final int gravity = ((LayoutParams) child.getLayoutParams()).gravity;
    final int absGravity = GravityCompat.getAbsoluteGravity(gravity, ViewCompat.getLayoutDirection(child));
    return (absGravity & (Gravity.LEFT | Gravity.RIGHT | Gravity.TOP | Gravity.BOTTOM)) != 0;
}

From source file:com.huangj.huangjlibrary.widget.drawerlayout.DrawerLayout.java

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    int widthMode = MeasureSpec.getMode(widthMeasureSpec);
    int heightMode = MeasureSpec.getMode(heightMeasureSpec);
    int widthSize = MeasureSpec.getSize(widthMeasureSpec);
    int heightSize = MeasureSpec.getSize(heightMeasureSpec);

    if (widthMode != MeasureSpec.EXACTLY || heightMode != MeasureSpec.EXACTLY) {
        if (isInEditMode()) {
            // Don't crash the layout editor. Consume all of the space if specified
            // or pick a magic number from thin air otherwise.
            // TODO Better communication with tools of this bogus state.
            // It will crash on a real device.
            if (widthMode == MeasureSpec.AT_MOST) {
                widthMode = MeasureSpec.EXACTLY;
            } else if (widthMode == MeasureSpec.UNSPECIFIED) {
                widthMode = MeasureSpec.EXACTLY;
                widthSize = 300;/*from   w  ww.  j av a2s. com*/
            }
            if (heightMode == MeasureSpec.AT_MOST) {
                heightMode = MeasureSpec.EXACTLY;
            } else if (heightMode == MeasureSpec.UNSPECIFIED) {
                heightMode = MeasureSpec.EXACTLY;
                heightSize = 300;
            }
        } else {
            throw new IllegalArgumentException("DrawerLayout must be measured with MeasureSpec.EXACTLY.");
        }
    }

    setMeasuredDimension(widthSize, heightSize);

    final boolean applyInsets = mLastInsets != null && ViewCompat.getFitsSystemWindows(this);
    final int layoutDirection = ViewCompat.getLayoutDirection(this);

    // Only one drawer is permitted along each vertical edge (left / right). These two booleans
    // are tracking the presence of the edge drawers.
    boolean hasDrawerOnLeftEdge = false;
    boolean hasDrawerOnRightEdge = false;
    final int childCount = getChildCount();
    for (int i = 0; i < childCount; i++) {
        final View child = getChildAt(i);

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

        final LayoutParams lp = (LayoutParams) child.getLayoutParams();

        if (applyInsets) {
            final int cgrav = GravityCompat.getAbsoluteGravity(lp.gravity, layoutDirection);
            if (ViewCompat.getFitsSystemWindows(child)) {
                IMPL.dispatchChildInsets(child, mLastInsets, cgrav);
            } else {
                IMPL.applyMarginInsets(lp, mLastInsets, cgrav);
            }
        }

        if (isContentView(child)) {
            // Content views get measured at exactly the layout's size.
            final int contentWidthSpec = MeasureSpec.makeMeasureSpec(widthSize - lp.leftMargin - lp.rightMargin,
                    MeasureSpec.EXACTLY);
            final int contentHeightSpec = MeasureSpec
                    .makeMeasureSpec(heightSize - lp.topMargin - lp.bottomMargin, MeasureSpec.EXACTLY);
            child.measure(contentWidthSpec, contentHeightSpec);
        } else if (isDrawerView(child)) {
            if (SET_DRAWER_SHADOW_FROM_ELEVATION) {
                if (ViewCompat.getElevation(child) != mDrawerElevation) {
                    ViewCompat.setElevation(child, mDrawerElevation);
                }
            }
            final @EdgeGravity int childGravity = getDrawerViewAbsoluteGravity(child)
                    & Gravity.HORIZONTAL_GRAVITY_MASK;
            // Note that the isDrawerView check guarantees that childGravity here is either
            // LEFT or RIGHT
            boolean isLeftEdgeDrawer = (childGravity == Gravity.LEFT);
            if ((isLeftEdgeDrawer && hasDrawerOnLeftEdge) || (!isLeftEdgeDrawer && hasDrawerOnRightEdge)) {
                throw new IllegalStateException(
                        "Child drawer has absolute gravity " + gravityToString(childGravity) + " but this "
                                + TAG + " already has a " + "drawer view along that edge");
            }
            if (isLeftEdgeDrawer) {
                hasDrawerOnLeftEdge = true;
            } else {
                hasDrawerOnRightEdge = true;
            }
            final int drawerWidthSpec = getChildMeasureSpec(widthMeasureSpec,
                    mMinDrawerMargin + lp.leftMargin + lp.rightMargin, lp.width);
            final int drawerHeightSpec = getChildMeasureSpec(heightMeasureSpec, lp.topMargin + lp.bottomMargin,
                    lp.height);
            child.measure(drawerWidthSpec, drawerHeightSpec);
        } else {
            throw new IllegalStateException("Child " + child + " at index " + i
                    + " does not have a valid layout_gravity - must be Gravity.LEFT, "
                    + "Gravity.RIGHT or Gravity.NO_GRAVITY");
        }
    }
}

From source file:com.hippo.ehviewer.ui.scene.GalleryListScene.java

@Override
public void onStateChange(SearchBar searchBar, int newState, int oldState, boolean animation) {
    if (null == mLeftDrawable || null == mRightDrawable) {
        return;/*from www. jav a 2s . com*/
    }

    switch (oldState) {
    default:
    case SearchBar.STATE_NORMAL:
        mLeftDrawable.setArrow(animation ? ANIMATE_TIME : 0);
        mRightDrawable.setDelete(animation ? ANIMATE_TIME : 0);
        break;
    case SearchBar.STATE_SEARCH:
        if (newState == SearchBar.STATE_NORMAL) {
            mLeftDrawable.setMenu(animation ? ANIMATE_TIME : 0);
            mRightDrawable.setAdd(animation ? ANIMATE_TIME : 0);
        }
        break;
    case SearchBar.STATE_SEARCH_LIST:
        if (newState == STATE_NORMAL) {
            mLeftDrawable.setMenu(animation ? ANIMATE_TIME : 0);
            mRightDrawable.setAdd(animation ? ANIMATE_TIME : 0);
        }
        break;
    }

    if (newState == STATE_NORMAL || newState == STATE_SIMPLE_SEARCH) {
        setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED, Gravity.LEFT);
        setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED, Gravity.RIGHT);
    } else {
        setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED, Gravity.LEFT);
        setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED, Gravity.RIGHT);
    }
}

From source file:com.irccloud.android.activity.MainActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) { //Back key pressed
        if (drawerLayout != null
                && (drawerLayout.isDrawerOpen(Gravity.LEFT) || drawerLayout.isDrawerOpen(Gravity.RIGHT))) {
            drawerLayout.closeDrawers();
            return true;
        }/*w ww  .  j  ava 2 s.c om*/
        while (backStack != null && backStack.size() > 0) {
            Integer bid = backStack.get(0);
            backStack.remove(0);
            if (buffer == null || bid != buffer.bid) {
                BuffersDataSource.Buffer b = BuffersDataSource.getInstance().getBuffer(bid);
                if (b != null) {
                    onBufferSelected(bid);
                    if (backStack.size() > 0)
                        backStack.remove(0);
                    return true;
                }
            }
        }
    }
    return super.onKeyDown(keyCode, event);
}

From source file:android.car.ui.provider.CarDrawerLayout.java

@Override
protected void onRestoreInstanceState(Parcelable state) {
    SavedState ss = null;/*from  w  ww. j  av  a2s. c o m*/
    if (state.getClass().getClassLoader() != getClass().getClassLoader()) {
        // Class loader mismatch, recreate from parcel.
        Parcel stateParcel = Parcel.obtain();
        state.writeToParcel(stateParcel, 0);
        ss = SavedState.CREATOR.createFromParcel(stateParcel);
    } else {
        ss = (SavedState) state;
    }
    super.onRestoreInstanceState(ss.getSuperState());

    if (ss.openDrawerGravity != Gravity.NO_GRAVITY) {
        openDrawer();
    }

    setDrawerLockMode(ss.lockModeLeft, Gravity.LEFT);
    setDrawerLockMode(ss.lockModeRight, Gravity.RIGHT);
}

From source file:android.support.design.widget.CoordinatorLayout.java

/**
 * Lay out a child view with respect to a keyline.
 *
 * <p>The keyline represents a horizontal offset from the unpadded starting edge of
 * the CoordinatorLayout. The child's gravity will affect how it is positioned with
 * respect to the keyline.</p>/*www  .j  a va 2s.  c o  m*/
 *
 * @param child child to lay out
 * @param keyline offset from the starting edge in pixels of the keyline to align with
 * @param layoutDirection ViewCompat constant for layout direction
 */
private void layoutChildWithKeyline(View child, int keyline, int layoutDirection) {
    final LayoutParams lp = (LayoutParams) child.getLayoutParams();
    final int absGravity = GravityCompat.getAbsoluteGravity(resolveKeylineGravity(lp.gravity), layoutDirection);

    final int hgrav = absGravity & Gravity.HORIZONTAL_GRAVITY_MASK;
    final int vgrav = absGravity & Gravity.VERTICAL_GRAVITY_MASK;
    final int width = getWidth();
    final int height = getHeight();
    final int childWidth = child.getMeasuredWidth();
    final int childHeight = child.getMeasuredHeight();

    if (layoutDirection == ViewCompat.LAYOUT_DIRECTION_RTL) {
        keyline = width - keyline;
    }

    int left = getKeyline(keyline) - childWidth;
    int top = 0;

    switch (hgrav) {
    default:
    case Gravity.LEFT:
        // Nothing to do.
        break;
    case Gravity.RIGHT:
        left += childWidth;
        break;
    case Gravity.CENTER_HORIZONTAL:
        left += childWidth / 2;
        break;
    }

    switch (vgrav) {
    default:
    case Gravity.TOP:
        // Do nothing, we're already in position.
        break;
    case Gravity.BOTTOM:
        top += childHeight;
        break;
    case Gravity.CENTER_VERTICAL:
        top += childHeight / 2;
        break;
    }

    // Obey margins and padding
    left = Math.max(getPaddingLeft() + lp.leftMargin,
            Math.min(left, width - getPaddingRight() - childWidth - lp.rightMargin));
    top = Math.max(getPaddingTop() + lp.topMargin,
            Math.min(top, height - getPaddingBottom() - childHeight - lp.bottomMargin));

    child.layout(left, top, left + childWidth, top + childHeight);
}