Xamarin Android Binding Library

Xamarin.Android Binding Library for Ittianyu BottomNavigationViewEx

Install-Package Naxam.Ittianyu.BottomNavExtension

Features

Method	Description
enableAnimation	Enable or disable click item animation(text scale and icon move animation in no item shifting mode). Default true.
enableItemShiftingMode	Enable the shifting mode for each item. It will has a shift animation for item if true. Otherwise the item text always be shown. Default true when item count > 3.
enableShiftingMode	Enable the shifting mode for navigation. It will has a shift animation if true. Otherwise all items are the same width. Default true when item count > 3.
getBottomNavigationItemView	Get private mButton in mMenuView at position
getBottomNavigationItemViews	Get private mButtons in mMenuView
getCurrentItem	Get the current checked item position.
getIconAt	Get icon at position.
getItemCount	Get item count.
getItemHeight	Get item height.
getLargeLabelAt	Get large label at position. Each item has tow label, one is large, another is small.
getSmallLabelAt	Get small label at position. Each item has tow label, one is large, another is small.
getMenuItemPosition	Get menu item position in menu. Return position if success, -1 otherwise.
getOnNavigationItemSelectedListener	Get OnNavigationItemSelectedListener.
setCurrentItem	Set the current checked item.
setIconSize	Set all item ImageView size.
setIconSizeAt	Set all item ImageView size which at position.
setIconVisibility	Change the visibility of icon.
setItemHeight	Set menu item height.
setLargeTextSize	Set all item large TextView size. Each item has tow label, one is large, another is small. Small one will be shown when item state is normal. Large one will be shown when item checked.
setSmallTextSize	Set all item small TextView size. Each item has tow label, one is large, another is small. Small one will be shown when item state is normal. Large one will be shown when item checked.
setTextSize	Set all item large and small TextView size.
setTextVisibility	Change the visibility of text.
setTypeface	set Typeface for all item TextView.
setupWithViewPager	This method will link the given ViewPager and this BottomNavigationViewEx together so that changes in one are automatically reflected in the other. This includes scroll state changes and clicks.

Example

Style

With ViewPager

Add ViewBadger

Adding to project

Sdk Version

compileSdkVersion >= 25

Getting started

Adding a custom widget in xml :

<com.ittianyu.bottomnavigationviewex.BottomNavigationViewEx
    android:id="@+id/bnve"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:background="@color/colorPrimary"
    app:itemIconTint="@color/selector_item_color"
    app:itemTextColor="@color/selector_item_color"
    app:menu="@menu/menu_navigation_with_view_pager" />

Binding view in Activity:

BottomNavigationViewEx bnve = FindViewById<BottomNavigationViewEx>(Resource.Id.bnve);

Disable all animations

bnve.enableAnimation(false);
bnve.enableShiftingMode(false);
bnve.enableItemShiftingMode(false);

Custom text and icon size

bnve.setIconSize(widthDp, heightDp);
bnve.setTextSize(sp);

Binding with ViewPager

// set adapter
adapter = new VpAdapter(getSupportFragmentManager(), fragments);
bind.vp.setAdapter(adapter);

// binding with ViewPager
bind.bnve.setupWithViewPager(bind.vp);

Other usage in BottomNavigationViewEx

You can see the demo.

Usage in BottomNavigationView

Other usage is the same as official BottomNavigationView. You can click here for detail.

ProGuard

If you are using ProGuard you might need to add the following option:

-keep public class android.support.design.widget.BottomNavigationView { *; }
-keep public class android.support.design.internal.BottomNavigationMenuView { *; }
-keep public class android.support.design.internal.BottomNavigationPresenter { *; }
-keep public class android.support.design.internal.BottomNavigationItemView { *; }

References

The lib is based on BottomNavigationView in Support Library 25 design.

I found it was inflexible when I try in demo. For example, I can't change the current checked item by code. So I write a class extends it to provide some useful method.

You no need to worry about stability. Because I minimise modifying by reflecting.

Thanks

• Ittianyu

License

MIT License

Copyright (c) 2019 NAXAM

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.