How to create a drop down view like Google Calendar using Toolbar?

Question

I am trying to create something similar to Google Calendar drop down month widget.

Any help would be really appreciated.

So far I have an idea that I need to use Toolbar with expandable animation but not sure that's the right direction to move into.

Copra

What's the minimum level API collapsing toolbar supports? – Xmas

Its part of design support lib now so should support 2.3 and above. – Copra

Answer 1

I was also trying to create something similar to the Google Calendar app. I've come with this implementation:

I use the CompactCalendarView library for the month widget. And CollapsingToolbarLayout for the drop down.

You can view the source of this implementation at GitHub: https://github.com/GerritHoekstra/CompactCalendarViewToolbar

The main layout can be found here.

I hope this helps you further.

Charlsiecharlton

Hey, I checked your code and its quite similar to mine. My problem is that the expand animation of the toolbar is quite slow, yours isn't. How did you achieved this? – Hendren

I created a question asking it: #34527857 – Hendren

Thank you so much! The ingenious trick with the parallax multiplier gave me what I wanted. – Rookery

how can I disable toolbar dragging, and control opening and closing it just from toolbar button? – Fer

I checked your solution, however I have a question. Why does the CompactCalendarView need to be in a linearlayout? Can you not implement it without one? It didn't seem to work when I WASN'T enclosing it in a linearlayout though. – Koby

@Charlsiecharlton I have a PR ready to upgrade your project to AndroidX if you give me write access : github.com/Louis012 – Etamine

Answer 2

May you want to take a look to CollapsingToolbarLayout

<android.support.design.widget.CollapsingToolbarLayout
            android:id="@+id/collapsingToolbarLayout"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layout_scrollFlags="scroll|exitUntilCollapsed"
            app:expandedTitleMarginStart="64dp"
            app:contentScrim="?attr/colorPrimary">
            <CalendarView
                android:layout_width="match_parent"
                android:layout_height="256dp"></CalendarView>

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                android:minHeight="?attr/actionBarSize"
                app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
                app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
                app:layout_collapseMode="pin"/>

        </android.support.design.widget.CollapsingToolbarLayout>

I recommend you to follow this awesome tutorial to implement this and other interesting things about Design Library. Hope this helps.

Followthrough

Answer 3

I have found one project which create dropdown view like Google calendar app

Use this : Sample Project

Which is use CollapsingToolbarLayout inside it put custom calenderView

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/coordinatorLayout"
    android:layout_width="match_parent"
    android:background="@android:color/white"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/app_bar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:stateListAnimator="@animator/ann"
        app:expanded="false"
        android:background="@android:color/white"
        app:layout_behavior=".MyAppBarBehavior"
        tools:targetApi="lollipop">

        <android.support.design.widget.CollapsingToolbarLayout
            android:id="@+id/collapsingToolbarLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"

            app:layout_scrollFlags="scroll|exitUntilCollapsed|snap|enterAlways"
            app:statusBarScrim="?attr/colorPrimaryDark">

            <!--large view -->
            <com.example.GoogleCalendar.GooglecalenderView
                android:id="@+id/calander"
                android:layout_width="match_parent"
                android:layout_height="500dp"
                android:orientation="vertical"
                app:layout_collapseMode="pin"

                android:layout_marginTop="?attr/actionBarSize"
              >


            </com.example.GoogleCalendar.GooglecalenderView>

            <!--top toolbar-->
            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                app:title="fkdl"
                app:contentInsetLeft="0dp"
                app:contentInsetStart="0dp"
                app:titleTextColor="@color/colorPrimaryDark"
                android:background="@android:color/white"
                app:layout_collapseMode="pin"
                app:popupTheme="@style/AppTheme.PopupOverlay">

                <android.support.constraint.ConstraintLayout
                    android:layout_width="match_parent"
                    android:layout_height="?attr/actionBarSize"
                    android:clickable="true"
                    android:focusable="true">

                    <View
                        android:layout_width="0dp"
                        android:layout_height="0dp"
                        android:layout_marginTop="10dp"
                        android:id="@+id/backsupport"
                        android:background="?attr/selectableItemBackground"
                        android:clickable="true"
                        android:layout_marginBottom="10dp"
                        app:layout_constraintBottom_toBottomOf="parent"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toTopOf="parent" />
                <TextView
                        android:id="@+id/monthname"
                        app:layout_constraintLeft_toLeftOf="parent"
                        app:layout_constraintTop_toTopOf="parent"
                        app:layout_constraintBottom_toBottomOf="parent"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:paddingTop="4dp"
                        android:paddingBottom="4dp"
                        android:fontFamily="@font/googlesans_regular"
                        android:text="June"
                        android:textColor="#464646"
                        android:textSize="20sp" />
                    <ImageView
                        android:id="@+id/arrowImageView"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:src="@drawable/ic_arrow_drop_up_black_24dp"
                        app:layout_constraintLeft_toRightOf="@+id/monthname"
                        android:translationX="-5dp"
                        app:layout_constraintTop_toTopOf="parent"
                        app:layout_constraintBottom_toBottomOf="parent"
                        tools:ignore="ContentDescription,RtlHardcoded" />
                                 </android.support.constraint.ConstraintLayout>

            </android.support.v7.widget.Toolbar>
  </android.support.design.widget.CollapsingToolbarLayout>

    </android.support.design.widget.AppBarLayout>

    <com.example.GoogleCalendar.MyRecyclerView
        android:id="@+id/nestedView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />


</android.support.design.widget.CoordinatorLayout>

Contravallation