Java Code Examples for android.widget.GridLayout#LayoutParams

private void initializeTextView(
        TextView view,
        GridLayout layout,
        int columnId){

    layout.addView(view);

    GridLayout.LayoutParams param = new GridLayout.LayoutParams();
    param.height = GridLayout.LayoutParams.WRAP_CONTENT;
    param.width = GridLayout.LayoutParams.WRAP_CONTENT;
    param.rightMargin = 5;
    param.topMargin = 5;
    view.setTextSize(11);
    view.setWidth(TEXT_FIELD_WIDTH[columnId]);
    view.setTextAlignment(View.TEXT_ALIGNMENT_CENTER);
    param.setGravity(Gravity.CENTER);
    param.columnSpec = GridLayout.spec(columnId);
    param.rowSpec = GridLayout.spec(rowId);
    view.setLayoutParams (param);
}
 

private void setUpClsTitle(){
    for (int i=0; i<TITLE_DATA.length; ++i){
        String content = TITLE_DATA[i];
        GridLayout.LayoutParams params = new GridLayout.LayoutParams();
        //第一列的时候
        if (i == 0){
            params.width = mTableDistance;
        }
        else {
            //添加分割线
            View divider = getLayoutInflater().inflate(R.layout.grid_title_form,mGlClsTitle,false);
            mGlClsTitle.addView(divider);

            params.width = mTableDistance * 2;
        }
        params.height = GridLayout.LayoutParams.MATCH_PARENT;
        TextView textView = new TextView(this);
        textView.setTextColor(getResources().getColor(R.color.blue));
        textView.setText(content);
        textView.setGravity(Gravity.CENTER);
        mGlClsTitle.addView(textView,params);
    }
}
 

private View createOptionIcon(GridLayout parent, int rowIndex, boolean editIconExists) {
    // The icon has a pre-defined width.
    ImageView optionIcon = new ImageView(parent.getContext());
    optionIcon.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO);
    optionIcon.setBackgroundResource(R.drawable.payments_ui_logo_bg);
    optionIcon.setImageDrawable(mOption.getDrawableIcon());
    optionIcon.setMaxWidth(mIconMaxWidth);

    // Place option icon at column three if no edit icon.
    int columnStart = editIconExists ? 2 : 3;
    GridLayout.LayoutParams iconParams = new GridLayout.LayoutParams(
            GridLayout.spec(rowIndex, 1, GridLayout.CENTER),
            GridLayout.spec(columnStart, 1));
    iconParams.topMargin = mVerticalMargin;
    parent.addView(optionIcon, iconParams);

    optionIcon.setOnClickListener(OptionSection.this);
    return optionIcon;
}
 

private View createIcon(GridLayout parent, int rowIndex) {
    // The icon has a pre-defined width.
    ImageView icon = new ImageView(parent.getContext());
    icon.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO);
    icon.setBackgroundResource(R.drawable.payments_ui_logo_bg);
    icon.setImageResource(mOption.getDrawableIconId());
    icon.setMaxWidth(mIconMaxWidth);

    // The icon floats to the right of everything.
    GridLayout.LayoutParams iconParams = new GridLayout.LayoutParams(
            GridLayout.spec(rowIndex, 1, GridLayout.CENTER), GridLayout.spec(2, 1));
    iconParams.topMargin = mVerticalMargin;
    ApiCompatibilityUtils.setMarginStart(iconParams, mLargeSpacing);
    parent.addView(icon, iconParams);

    icon.setOnClickListener(OptionSection.this);
    return icon;
}
 

/**
 * Factory method to initialize each text view and add it to the layout
 * @param view text view to be initialized
 * @param layout layout to which the view is to be added
 * @param columnId column of the layout to which the view is to be added
 */
private void initializeTextView(
        TextView view,
        GridLayout layout,
        int columnId){

    layout.addView(view);

    GridLayout.LayoutParams param = new GridLayout.LayoutParams();
    param.height = GridLayout.LayoutParams.WRAP_CONTENT;
    param.width = GridLayout.LayoutParams.WRAP_CONTENT;
    param.rightMargin = 5;
    param.topMargin = 5;
    view.setTextSize(11);
    view.setWidth(TEXT_FIELD_WIDTH[columnId]);
    view.setTextAlignment(View.TEXT_ALIGNMENT_CENTER);
    param.setGravity(Gravity.CENTER);
    param.columnSpec = GridLayout.spec(columnId);
    param.rowSpec = GridLayout.spec(rowId);
    view.setLayoutParams (param);
}
 

private void makeColorPresetButton(int color) {
        FrameLayout outframe = new FrameLayout(getContext());
        outframe.setBackgroundColor(Color.BLACK);
        outframe.setPadding(6,6,6,6);

        FrameLayout frame = new FrameLayout(getContext());
        //frame.setPadding(6,6,6,6);
        //frame.setBackgroundColor(Color.BLACK);
        frame.setBackgroundResource(R.drawable.bwg);

        TextView c = new TextView(getContext());
        c.setText("   ");
        c.setTextSize(22);
        c.setBackgroundColor(color);
//        if (color==Color.TRANSPARENT) {
//            c.setBackgroundResource(R.drawable.transparentgrid);
//        }
        c.setTag(color);
        c.setClickable(true);
        c.setOnClickListener(setColorListener);
        frame.addView(c);
        GridLayout.LayoutParams lp = new GridLayout.LayoutParams();
        lp.setMargins(24, 16, 24, 16);
        outframe.setPadding(6,6,6,6);
        outframe.addView(frame);
        colorPresets.addView(outframe, lp);
    }
 

private void addAppToIconSheet(GridLayout iconSheet, AppLauncher app, int pos, boolean reuse) {
    if (app != null) {
        try {
            if (((app.isWidget() || app.isLink()) && isAppInstalled(app.getPackageName())) || mLaunchApp.isValidActivity(app)) {
                ViewGroup item = getLauncherView(app, false, reuse);
                if (item != null) {
                    if (!app.iconLoaded()) {
                        app.loadAppIconAsync(this);
                    }
                    item.setTranslationX(0);
                    ViewGroup parent = (ViewGroup) item.getParent();
                    if (parent != null) parent.removeView(item);
                    GridLayout.LayoutParams lp = getAppLauncherLayoutParams(iconSheet, app);
                    iconSheet.addView(item, pos, lp);
                }
            } else {
                db().deleteApp(app.getComponentName());
                Log.d(TAG, "removed " + app.getPackageName() + " " + app.getActivityName() + ": activity not valid.");
            }
        } catch (Exception e) {
            Log.e(TAG, "exception adding icon to sheet", e);
            Toast.makeText(this,"Couldn't place icon: " + e.getMessage(), Toast.LENGTH_LONG).show();
        }
    } else {
        Log.d(TAG, "Not showing recent: Null.");
    }

}
 

private View createEditIcon(GridLayout parent, int rowIndex) {
    View editorIcon = LayoutInflater.from(parent.getContext())
                              .inflate(R.layout.payment_option_edit_icon, null);

    // The icon floats to the right of everything.
    GridLayout.LayoutParams iconParams = new GridLayout.LayoutParams(
            GridLayout.spec(rowIndex, 1, GridLayout.CENTER), GridLayout.spec(3, 1));
    iconParams.topMargin = mVerticalMargin;
    parent.addView(editorIcon, iconParams);

    editorIcon.setOnClickListener(OptionSection.this);
    return editorIcon;
}
 

/**
 * Update small notification icons when there is new notification coming, and the
 * Activity is in foreground.
 */
private void updateNotificationIcons() {

    if (mNotificationsContainer.getVisibility() != View.VISIBLE) {
        mNotificationsContainer.setVisibility(View.VISIBLE);
    }

    NotificationHub notificationHub = NotificationHub.getInstance();

    int iconSize = getResources().getDimensionPixelSize(R.dimen.small_notification_icon_size);
    int padding = getResources().getDimensionPixelSize(R.dimen.small_notification_icon_padding);

    final StatusBarNotification n = notificationHub.getCurrentNotification();
    ImageView icon = new ImageView(this);
    icon.setAlpha(NotificationPeek.ICON_LOW_OPACITY);

    icon.setPadding(padding, 0, padding, 0);
    icon.setImageDrawable(NotificationPeekViewUtils.getIconFromResource(this, n));
    icon.setTag(n);

    restoreFirstIconVisibility();

    int oldIndex = getOldIconViewIndex(notificationHub);

    if (oldIndex >= 0) {
        mNotificationsContainer.removeViewAt(oldIndex);
    }

    mNotificationsContainer.addView(icon);
    LinearLayout.LayoutParams linearLayoutParams =
            new LinearLayout.LayoutParams(iconSize, iconSize);

    // Wrap LayoutParams to GridLayout.LayoutParams.
    GridLayout.LayoutParams gridLayoutParams = new GridLayout.LayoutParams(linearLayoutParams);
    icon.setLayoutParams(gridLayoutParams);
}
 

@NonNull
    private GridLayout.LayoutParams getAppLauncherLayoutParams(GridLayout grid, AppLauncher app) {

        GridLayout.LayoutParams lp = new GridLayout.LayoutParams();

        final int wDp = getLauncherWidth(app);
        final int hDp = getLauncherHeight(app);
        float w = dipToPx(wDp);
        float h = dipToPx(hDp);

        int wcells = getWidgetWCells(app);
        int hcells = getWidgetHCells(app);

        float sw = mStyle.getLauncherSize();

        float cellwidth = sw * 1f;
        float cellheight = cellwidth *1.1f;  // ~square cells


        if (w>0 || wcells>0) {

            if (wcells == 0) wcells = (int) Math.round(Math.max(w / cellwidth * .75, 1));

            if (wcells > 1) {
                int start = GridLayout.UNDEFINED;
                if (wcells > grid.getColumnCount()) {
                    wcells = grid.getColumnCount();
                }
                if (wcells > mStyle.getMaxWCells()) {
                    wcells = mStyle.getMaxWCells();
                }

                lp.columnSpec = GridLayout.spec(start, wcells, GridLayout.FILL);

                //Log.d("widcol", "w=" + w + " wcells=" + wcells + " start=" + start + " cellwidth=" + cellwidth + " r=" + cellwidth * wcells);
            } else {
                lp.columnSpec = GridLayout.spec(GridLayout.UNDEFINED, 1, GridLayout.FILL);
            }
        }
        if (h>0 || hcells>0) {

            if (hcells == 0) {
                hcells = (int) Math.round(Math.max(h / cellheight * .75, 1));
                if (hcells > mStyle.getMaxWCells()) {
                    hcells = mStyle.getMaxWCells();
                }
            }

            if (hcells > 1) {
                lp.rowSpec = GridLayout.spec(GridLayout.UNDEFINED, hcells, GridLayout.FILL);
            } else {
                lp.rowSpec = GridLayout.spec(GridLayout.UNDEFINED, 1, GridLayout.FILL);
            }

        }

        final AppWidgetHostView appwid = mWidgetHelper.getAppWidgetHostView(app);

        if (appwid != null) {

            lp.width = (int)(cellwidth*wcells*1.16);

            int calcHeight = (int)(cellheight*hcells*(hcells/(hcells-.2)));
            lp.height = calcHeight;
//            if (h > cellheight*hcells*1.3) {
//                lp.height = calcHeight;
//            } else {
//                lp.height = ViewGroup.LayoutParams.WRAP_CONTENT;//(int)(cellheight*hcells*1.2);
//            }

            storeWidgetWCells(app, wcells);
            storeWidgetHCells(app, hcells);
            //lp.height = ViewGroup.LayoutParams.WRAP_CONTENT;//(int)(cellheight*hcells*1.2);

            final int hDpf;
            if (h<calcHeight) {
                hDpf = pxToDip(calcHeight);
            } else {
                hDpf = hDp;
            }
            //Log.d("widcol2", "wDp=" + wDp + " w=" + w + " wcells=" + wcells  + " cellwidth=" + cellwidth + " r=" + cellwidth * wcells);
            //Log.d("widcol2", "hDp=" + hDp + " hDpf=" + hDpf + " h=" + h + " hcells=" + hcells  + " cellheight=" + cellheight + " r=" + cellheight * hcells);
            iconHandler.postDelayed(new Runnable() {
                @Override
                public void run() {
                    appwid.updateAppWidgetSize(null, wDp, hDpf, wDp, hDpf);
                    if (appwid.getParent()!=null) {
                        appwid.getParent().requestLayout();
                    }
                    appwid.requestLayout();
                    appwid.postInvalidate();
                }
            }, 1000);


        }

        return lp;
    }
 

private View inflateClusterMapItem(int x, int y) {
    @Nullable
    Location location = cluster.map.get(x, y);

    View view;
    ImageView imageViewContent;
    TextView textView;
    GridLayout.LayoutParams paramsGridLayout;

    if (vi == null)
        return null;

    view = vi.inflate(R.layout.grid_layout_cluster_map_edit, gridLayout, false);
    view.setTag(new LocationWrapper(x, y, location));
    imageViewContent = view.findViewById(R.id.imageView);
    textView = view.findViewById(R.id.textView);
    view.setOnClickListener(this);

    textView.setVisibility(View.GONE);
    if (location != null)
        if (location.kind == Location.Kind.USER) {
            if (location.host == null ||
                    location.host.isEmpty() ||
                    location.host.contentEquals("null") ||
                    location.host.contentEquals("TBD")) {
                imageViewContent.setImageResource(R.drawable.ic_missing_black_25dp);
                view.setBackgroundColor(getResources().getColor(R.color.color_warning));
            } else {
                textView.setVisibility(View.VISIBLE);
                textView.setText(location.host);
                imageViewContent.setImageDrawable(ContextCompat.getDrawable(this, R.drawable.ic_desktop_mac_black_custom));
                if (cluster.hostPrefix != null && location.host.startsWith(cluster.hostPrefix)) // set warning flag because host contain cluster prefix
                    view.setBackgroundColor(getResources().getColor(R.color.color_warning));
                else
                    imageViewContent.setColorFilter(ContextCompat.getColor(this, R.color.colorClusterMapComputerColor), android.graphics.PorterDuff.Mode.SRC_IN);
            }

        } else if (location.kind == Location.Kind.WALL)
            imageViewContent.setImageResource(R.color.colorClusterMapWall);
        else {
            imageViewContent.setImageResource(R.drawable.ic_add_black_24dp);
            imageViewContent.setColorFilter(Color.parseColor("#000000"), PorterDuff.Mode.CLEAR);
        }

    paramsGridLayout = (GridLayout.LayoutParams) view.getLayoutParams();
    paramsGridLayout.columnSpec = GridLayout.spec(x);
    paramsGridLayout.rowSpec = GridLayout.spec(y);
    paramsGridLayout.setGravity(Gravity.FILL);
    paramsGridLayout.height = GridLayout.LayoutParams.WRAP_CONTENT;
    paramsGridLayout.width = GridLayout.LayoutParams.WRAP_CONTENT;
    float sizeX = 1;
    float sizeY = 1;
    if (location != null) {
        sizeX = location.sizeX;
        sizeY = location.sizeY;
    }
    paramsGridLayout.height = (int) (baseItemHeight * sizeY);
    paramsGridLayout.width = (int) (baseItemWidth * sizeX);
    imageViewContent.setPadding(paddingItem2dp, paddingItem2dp, paddingItem2dp, paddingItem2dp);
    view.setLayoutParams(paramsGridLayout);

    return view;
}
 

private View inflateClusterMapController(int x, int y) {
        GridLayout.LayoutParams paramsGridLayout;
        Location location = null;
        boolean isCorner = false;

        View view = vi.inflate(R.layout.grid_layout_cluster_map_edit_controller, gridLayout, false);

        if (x == cluster.width && y == cluster.height) {
            isCorner = true;
        } else if (x == cluster.width)
            location = cluster.map.get(0, y);
        else if (y == cluster.height)
            location = cluster.map.get(x, 0);

        float sizeX = 1;
        float sizeY = 1;
        if (!isCorner) {
            if (location != null) {
                sizeX = location.sizeX;
                sizeY = location.sizeY;
            }

            final LocationWrapper wrapper = new LocationWrapper(x, y, location);
            view.setTag(wrapper);
            view.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    onClickController(wrapper);
                }
            });
        }

        paramsGridLayout = (GridLayout.LayoutParams) view.getLayoutParams();
        paramsGridLayout.columnSpec = GridLayout.spec(x);
        paramsGridLayout.rowSpec = GridLayout.spec(y);
        paramsGridLayout.setGravity(Gravity.FILL);
        paramsGridLayout.height = GridLayout.LayoutParams.WRAP_CONTENT;
        paramsGridLayout.width = GridLayout.LayoutParams.WRAP_CONTENT;
        paramsGridLayout.height = (int) (baseItemHeight * sizeY);
        paramsGridLayout.width = (int) (baseItemWidth * sizeX);

        ImageView imageView = view.findViewById(R.id.imageView);
        if (isCorner)
            imageView.setImageDrawable(null);
//            imageView.setImageResource(R.drawable.ic_add_black_24dp);

        view.setLayoutParams(paramsGridLayout);
        return view;
    }
 

/**
 * Updates the total and how it's broken down.
 *
 * @param cart The shopping cart contents and the total.
 */
public void update(ShoppingCart cart) {
    Context context = mBreakdownLayout.getContext();

    // Update the summary to display information about the total.
    setSummaryText(cart.getTotal().getLabel(), createValueString(
            cart.getTotal().getCurrency(), cart.getTotal().getPrice(), true));

    mBreakdownLayout.removeAllViews();
    if (cart.getContents() == null) return;

    // Update the breakdown, using one row per {@link LineItem}.
    int numItems = cart.getContents().size();
    mBreakdownLayout.setRowCount(numItems);
    for (int i = 0; i < numItems; i++) {
        LineItem item = cart.getContents().get(i);

        TextView description = new TextView(context);
        ApiCompatibilityUtils.setTextAppearance(
                description, R.style.PaymentsUiSectionDescriptiveTextEndAligned);
        description.setText(item.getLabel());

        TextView amount = new TextView(context);
        ApiCompatibilityUtils.setTextAppearance(
                amount, R.style.PaymentsUiSectionDescriptiveTextEndAligned);
        amount.setText(createValueString(item.getCurrency(), item.getPrice(), false));

        // Each item is represented by a row in the GridLayout.
        GridLayout.LayoutParams descriptionParams = new GridLayout.LayoutParams(
                GridLayout.spec(i, 1, GridLayout.END),
                GridLayout.spec(0, 1, GridLayout.END));
        GridLayout.LayoutParams amountParams = new GridLayout.LayoutParams(
                GridLayout.spec(i, 1, GridLayout.END),
                GridLayout.spec(1, 1, GridLayout.END));
        ApiCompatibilityUtils.setMarginStart(amountParams,
                context.getResources().getDimensionPixelSize(
                        R.dimen.payments_section_descriptive_item_spacing));

        mBreakdownLayout.addView(description, descriptionParams);
        mBreakdownLayout.addView(amount, amountParams);
    }
}
 

private TextView createLabel(
        GridLayout parent, int rowIndex, boolean iconExists, boolean isEnabled) {
    Context context = parent.getContext();
    Resources resources = context.getResources();

    // By default, the label appears to the right of the "button" in the second column.
    // + If there is no button and no icon, the label spans the whole row.
    // + If there is no icon, the label spans two columns.
    // + Otherwise, the label occupies only its own column.
    int columnStart = 1;
    int columnSpan = iconExists ? 1 : 2;

    TextView labelView = new TextView(context);
    if (mRowType == OPTION_ROW_TYPE_OPTION) {
        // Show the string representing the PaymentOption.
        ApiCompatibilityUtils.setTextAppearance(labelView, isEnabled
                ? R.style.PaymentsUiSectionDefaultText
                : R.style.PaymentsUiSectionDisabledText);
        labelView.setText(convertOptionToString(mOption));
        labelView.setEnabled(isEnabled);
    } else if (mRowType == OPTION_ROW_TYPE_ADD) {
        // Shows string saying that the user can add a new option, e.g. credit card no.
        String typeface = resources.getString(R.string.roboto_medium_typeface);
        int textStyle = resources.getInteger(R.integer.roboto_medium_textstyle);
        int buttonHeight = resources.getDimensionPixelSize(
                R.dimen.payments_section_add_button_height);

        ApiCompatibilityUtils.setTextAppearance(
                labelView, R.style.PaymentsUiSectionAddButtonLabel);
        labelView.setMinimumHeight(buttonHeight);
        labelView.setGravity(Gravity.CENTER_VERTICAL);
        labelView.setTypeface(Typeface.create(typeface, textStyle));
    } else if (mRowType == OPTION_ROW_TYPE_DESCRIPTION) {
        // The description spans all the columns.
        columnStart = 0;
        columnSpan = 3;

        ApiCompatibilityUtils.setTextAppearance(
                labelView, R.style.PaymentsUiSectionDescriptiveText);
    } else if (mRowType == OPTION_ROW_TYPE_WARNING) {
        // Warnings use two columns.
        columnSpan = 2;
        ApiCompatibilityUtils.setTextAppearance(
                labelView, R.style.PaymentsUiSectionWarningText);
    }

    // The label spans two columns if no icon exists.  Setting the view width to 0
    // forces it to stretch.
    GridLayout.LayoutParams labelParams = new GridLayout.LayoutParams(
            GridLayout.spec(rowIndex, 1, GridLayout.CENTER),
            GridLayout.spec(columnStart, columnSpan, GridLayout.FILL));
    labelParams.topMargin = mVerticalMargin;
    labelParams.width = 0;
    parent.addView(labelView, labelParams);

    labelView.setOnClickListener(OptionSection.this);
    return labelView;
}
 

@Override
    protected void onShowProbImpl() {
        GridLayout sortArea = findViewById(R.id.sort_area);
        sortArea.removeAllViews();

        sortArea.setOnDragListener(this);

        Set<Integer> nums = new TreeSet<>();
        SortingLevel level = ((SortingLevel) getLevel());

        String numliststr = getSavedLevelValue("numlist", (String) null);
        if (numliststr == null || numliststr.length() == 0) {
            int tries = 0;
            do {
                nums.add(getRand(level.getMaxNum()));
            } while (tries++ < 100 && nums.size() < level.getNumItems());

            numlist = new ArrayList<>(nums);

            do {
                Collections.shuffle(numlist);
            } while (isSorted(numlist));

        } else {
            numlist = splitInts(",", numliststr);
            deleteSavedLevelValue("numlist");
        }

        int mlen = (level.getMaxNum() + "").length();
//        int xsize = getScreenSize().x;
//
//        int tsize = xsize*2/3 / numcolumns / 4 - 5;
//        if (tsize>30) tsize = 30;
        int tsize = 30 - mlen;

        for (int num : numlist) {
            String spaces = "";
            for (int i = 0; i < Math.max(3, mlen) - (num + "").length(); i++) {
                spaces += " ";
            }

            final String numstr = spaces + num;

            TextView item = new TextView(this);
            item.setText(numstr);
            item.setTag(num);
            item.setOnTouchListener(this);
            item.setOnDragListener(this);


            item.setMaxLines(1);
            item.setTextSize(tsize);
            item.setTypeface(Typeface.MONOSPACE);
            //item.setWidth(xsize*2/3 / numcolumns -10);
            //item.setEms(mlen);

            item.setGravity(Gravity.END);

            GridLayout.LayoutParams lp = new GridLayout.LayoutParams();

            lp.setMargins(1, 1, 1, 1);
            lp.setGravity(Gravity.CENTER);
            item.setLayoutParams(lp);
            item.setBackgroundColor(BACKGROUND_COLOR);
            item.setPadding(16, 12, 16, 12);

            sortArea.addView(item);
        }
        problemDone = false;
        moves = 0;

        setFasttimes(level.getNumItems()*300, level.getNumItems()*500, level.getNumItems()*750);

        startHint(level.getNumItems());
    }
 

/**
 * Updates the total and how it's broken down.
 *
 * @param cart The shopping cart contents and the total.
 */
public void update(ShoppingCart cart) {
    Context context = mBreakdownLayout.getContext();

    CharSequence totalPrice = createValueString(
            cart.getTotal().getCurrency(), cart.getTotal().getPrice(), true);

    // Show the updated text view if the total changed.
    showUpdateIfTextChanged(totalPrice);

    // Update the summary to display information about the total.
    setSummaryText(cart.getTotal().getLabel(), totalPrice);

    mBreakdownLayout.removeAllViews();
    if (cart.getContents() == null) return;

    int maximumDescriptionWidthPx =
            ((View) mBreakdownLayout.getParent()).getWidth() * 2 / 3;

    // Update the breakdown, using one row per {@link LineItem}.
    int numItems = cart.getContents().size();
    mBreakdownLayout.setRowCount(numItems);
    for (int i = 0; i < numItems; i++) {
        LineItem item = cart.getContents().get(i);

        TextView description = new TextView(context);
        ApiCompatibilityUtils.setTextAppearance(description, item.getIsPending()
                        ? R.style.PaymentsUiSectionPendingTextEndAligned
                        : R.style.PaymentsUiSectionDescriptiveTextEndAligned);
        description.setText(item.getLabel());
        description.setEllipsize(TruncateAt.END);
        description.setMaxLines(2);
        if (maximumDescriptionWidthPx > 0) {
            description.setMaxWidth(maximumDescriptionWidthPx);
        }

        TextView amount = new TextView(context);
        ApiCompatibilityUtils.setTextAppearance(amount, item.getIsPending()
                        ? R.style.PaymentsUiSectionPendingTextEndAligned
                        : R.style.PaymentsUiSectionDescriptiveTextEndAligned);
        amount.setText(createValueString(item.getCurrency(), item.getPrice(), false));

        // Each item is represented by a row in the GridLayout.
        GridLayout.LayoutParams descriptionParams = new GridLayout.LayoutParams(
                GridLayout.spec(i, 1, GridLayout.END),
                GridLayout.spec(0, 1, GridLayout.END));
        GridLayout.LayoutParams amountParams = new GridLayout.LayoutParams(
                GridLayout.spec(i, 1, GridLayout.END),
                GridLayout.spec(1, 1, GridLayout.END));
        ApiCompatibilityUtils.setMarginStart(amountParams,
                context.getResources().getDimensionPixelSize(
                        R.dimen.payments_section_descriptive_item_spacing));

        mBreakdownLayout.addView(description, descriptionParams);
        mBreakdownLayout.addView(amount, amountParams);
    }
}
 

private TextView createLabel(GridLayout parent, int rowIndex, boolean optionIconExists,
        boolean editIconExists, boolean isEnabled) {
    Context context = parent.getContext();
    Resources resources = context.getResources();

    // By default, the label appears to the right of the "button" in the second column.
    // + If there is no button, no option and edit icon, the label spans the whole row.
    // + If there is no option and edit icon, the label spans three columns.
    // + If there is no edit icon or option icon, the label spans two columns.
    // + Otherwise, the label occupies only its own column.
    int columnStart = 1;
    int columnSpan = 1;
    if (!optionIconExists) columnSpan++;
    if (!editIconExists) columnSpan++;

    TextView labelView = new TextView(context);
    if (mRowType == OPTION_ROW_TYPE_OPTION) {
        // Show the string representing the PaymentOption.
        ApiCompatibilityUtils.setTextAppearance(labelView, isEnabled
                ? R.style.PaymentsUiSectionDefaultText
                : R.style.PaymentsUiSectionDisabledText);
        labelView.setText(convertOptionToString(
                mOption, mDelegate.isBoldLabelNeeded(OptionSection.this)));
        labelView.setEnabled(isEnabled);
    } else if (mRowType == OPTION_ROW_TYPE_ADD) {
        // Shows string saying that the user can add a new option, e.g. credit card no.
        String typeface = resources.getString(R.string.roboto_medium_typeface);
        int textStyle = resources.getInteger(R.integer.roboto_medium_textstyle);
        int buttonHeight = resources.getDimensionPixelSize(
                R.dimen.payments_section_add_button_height);

        ApiCompatibilityUtils.setTextAppearance(
                labelView, R.style.PaymentsUiSectionAddButtonLabel);
        labelView.setMinimumHeight(buttonHeight);
        labelView.setGravity(Gravity.CENTER_VERTICAL);
        labelView.setTypeface(Typeface.create(typeface, textStyle));
    } else if (mRowType == OPTION_ROW_TYPE_DESCRIPTION) {
        // The description spans all the columns.
        columnStart = 0;
        columnSpan = 4;

        ApiCompatibilityUtils.setTextAppearance(
                labelView, R.style.PaymentsUiSectionDescriptiveText);
    } else if (mRowType == OPTION_ROW_TYPE_WARNING) {
        // Warnings use three columns.
        columnSpan = 3;
        ApiCompatibilityUtils.setTextAppearance(
                labelView, R.style.PaymentsUiSectionWarningText);
    }

    // The label spans two columns if no option or edit icon, or spans three columns if
    // no option and edit icons. Setting the view width to 0 forces it to stretch.
    GridLayout.LayoutParams labelParams = new GridLayout.LayoutParams(
            GridLayout.spec(rowIndex, 1, GridLayout.CENTER),
            GridLayout.spec(columnStart, columnSpan, GridLayout.FILL));
    labelParams.topMargin = mVerticalMargin;
    labelParams.width = 0;
    if (optionIconExists) {
        // Margin at the end of the label instead of the start of the option icon to
        // allow option icon in the the next row align with the end of label (include
        // end margin) when edit icon exits in that row, like below:
        // ---Label---------------------[label margin]|---option icon---|
        // ---Label---[label margin]|---option icon---|----edit icon----|
        ApiCompatibilityUtils.setMarginEnd(labelParams, mLargeSpacing);
    }
    parent.addView(labelView, labelParams);

    labelView.setOnClickListener(OptionSection.this);
    return labelView;
}
 

public ChannelLayoutParams(GridLayout.LayoutParams source) {
    super(source);
}
 

/**
 * 将view添加进GridLayout
 */
private void addItem() {
    for (int i = 0; i < mItemList.size(); i++) {
        View childView = mViewList.get(i);
        ZoomHoverItem item = mItemList.get(i);
        GridLayout.LayoutParams childViewLp = (LayoutParams) childView.getLayoutParams();
        if (childViewLp == null) {
            childViewLp = new GridLayout.LayoutParams();
        }
        //设置子view的宽高
        if (mUseBaseWH) {
            childViewLp.width = mBaseWidth * item.getColumnSpan() + (item.getColumnSpan() > 1 ? (item.getColumnSpan() - 1) * mDivider : 0);
            childViewLp.height = mBaseHeight * item.getRowSpan() + (item.getRowSpan() > 1 ? (item.getRowSpan() - 1) * mDivider : 0);
        } else {
            if (childViewLp.width > 0) {
                childViewLp.width = childViewLp.width * item.getColumnSpan() + (item.getColumnSpan() > 1 ? (item.getColumnSpan() - 1) * mDivider : 0);
            } else {
                childViewLp.width = LayoutParams.WRAP_CONTENT;
            }

            if (childViewLp.height > 0) {
                childViewLp.height = childViewLp.height * item.getRowSpan() + (item.getRowSpan() > 1 ? (item.getRowSpan() - 1) * mDivider : 0);
            } else {
                childViewLp.height = LayoutParams.WRAP_CONTENT;
            }
        }
        //确定子view的行列位置
        childViewLp.rowSpec = GridLayout.spec(item.getRow(), item.getRowSpan());
        childViewLp.columnSpec = GridLayout.spec(item.getColumn(), item.getColumnSpan());
        int right = 0;
        int top = 0;
        int bottom = 0;
        int left = 0;
        if (item.getColumn() > 0) {
            //除了第一列左边距为分割线的宽度
            left = mDivider;
        } else if (item.getColumn() == 0) {
            //第一列的左边距=距离父布局的边距
            left = mMarginParent;
        }

        if (item.getRow() > 0) {
            //不是第一行上边距为分割线的宽度
            top = mDivider;
        } else if (item.getRow() == 0) {
            //第一行的上边距=距离父布局的边距
            top = mMarginParent;
        }

        //最后一列的右边距=距离父布局的边距
        if (item.getColumn() + item.getColumnSpan() >= mColumnNum) {
            right = mMarginParent;
        }

        //最后一行的下边距=距离父布局的边距
        if (item.getRow() + item.getRowSpan() >= mRowNum) {
            bottom = mMarginParent;
        }
        //设置margin
        childViewLp.setMargins(left, top, right, bottom);
        addView(childView, childViewLp);
        childView.setOnClickListener(this);
    }
}
 

private void updateNotificationIcons() {
    mNotificationsContainer.removeAllViews();
    int iconSize =
            mContext.getResources().getDimensionPixelSize(R.dimen.small_notification_icon_size);
    int padding = mContext.getResources()
            .getDimensionPixelSize(R.dimen.small_notification_icon_padding);
    Object tag = mNotificationView.getTag();
    String currentNotification = tag != null ? tag.toString() : null;
    boolean foundCurrentNotification = false;
    int notificationCount = mNotificationHub.getNotificationCount();
    mNotificationsContainer.setVisibility(View.VISIBLE);
    if (notificationCount <= 1) {
        mNotificationsContainer.setVisibility(View.GONE);
    }

    StatusBarNotification lastNotification = null;
    for (StatusBarNotification notification : mNotificationHub.getNotifications()) {
        final StatusBarNotification n = notification;
        ImageView icon = new ImageView(mContext);
        if (n.toString().equals(currentNotification)) {
            foundCurrentNotification = true;
        } else {
            icon.setAlpha(ICON_LOW_OPACITY);
        }
        icon.setPadding(padding, 0, padding, 0);
        icon.setImageDrawable(NotificationPeekViewUtils.getIconFromResource(mContext, n));
        icon.setTag(n);
        mNotificationsContainer.addView(icon);
        LinearLayout.LayoutParams linearLayoutParams =
                new LinearLayout.LayoutParams(iconSize, iconSize);

        // Wrap LayoutParams to GridLayout.LayoutParams.
        GridLayout.LayoutParams gridLayoutParams =
                new GridLayout.LayoutParams(linearLayoutParams);
        icon.setLayoutParams(gridLayoutParams);

        if (lastNotification == null) {
            lastNotification = n;
        }
    }


    if (!foundCurrentNotification) {
        if (notificationCount > 0) {
            updateSelection(lastNotification);
        } else {
            dismissNotification();
        }
    }
}