Material Design: Add a circular disclosure animation when switching between toolbars

Question

I read the “Selection” section in the material development guide ( https://material.io/guidelines/patterns/selection.html ), and one effect that I wanted to add to my application was a circular animation when switching between the application bar and ActionMode ? Another toolbar?

Here is an example from the recommendations: https://storage.googleapis.com/material-design/publish/material_v_10/assets/0Bwp7jtSjaW36RGF3eUFsRkdqU1U/patterns_selection_item_controlling_desktop_click.webm

I did not find an explanation on how to do this. I don’t even know if they are using ActionMode or something else ...

Is there anyone who could give me a good direction?

change minSdk 21

edit 2: look at the status bar, which also changes itself ...

Thanks Francois

Answer 1

Finally, I found a solution.

This is not very good ... but I have no other idea to use something else, so if you have any other tips to share ... you can!

Below is the final result and code below:

GitHub sample project

https://github.com/fbourlieux/android-material-circular_reveal_animation

Purpose and idea

"" . .

, android:fitsSystemWindows=false <item name="android:windowTranslucentStatus">true</item> . , Toolbar, , Bar, . , , .

styles.xml

<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
    <item name="android:windowTranslucentStatus">true</item>
</style>

android:windowTranslucentStatus.

app_bar_main.xml

<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:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="false"
    tools:context="sample.test.fbo.circularrevealanimation.MainActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

        <!-- used to force the two toolbars to display above each other -->
        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <!-- initial toolbar layout with the status bar 
            and the original toolbar. That layout need to have a 
            background to show the elevation even if it will never 
            be visible (because of inner component backgrounds) -->
            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="@color/colorPrimary"
                android:elevation="4dp"
                android:orientation="vertical">

                <!-- status bar background: height of 24dp 
                and initial color darker than the toolbar color -->
                <View
                    android:layout_width="match_parent"
                    android:layout_height="24dp"
                    android:background="@color/colorPrimaryDark" />

                <!-- main toolbar. A very basic one.-->
                <android.support.v7.widget.Toolbar
                    android:id="@+id/toolbar"
                    android:layout_width="match_parent"
                    android:layout_height="?attr/actionBarSize"
                    android:background="?attr/colorPrimary"
                    app:popupTheme="@style/AppTheme.PopupOverlay" />

            </LinearLayout>

            <!-- reveal section layout. Here is our second toolbar
            section which will be animated. It contains a view to
            fake the status bar background and the second toolbar
            to display. -->
            <LinearLayout
                android:id="@+id/revealedToolBar"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="@color/colorAccentDark"
                android:elevation="4dp"
                android:orientation="vertical"
                android:visibility="invisible">

                <!-- revealed status bar. Just to change it background. -->
                <View
                    android:id="@+id/revealBackgroundStatus"
                    android:layout_width="match_parent"
                    android:layout_height="24dp"
                    android:background="@color/colorAccentDark" />

                <!-- revealed toolbar. The second one with in our case 
                a simple button and text inside. -->
                <android.support.v7.widget.Toolbar
                    android:id="@+id/toolbar2"
                    android:layout_width="match_parent"
                    android:layout_height="?attr/actionBarSize"
                    android:background="@color/colorAccent"
                    app:popupTheme="@style/AppTheme.PopupOverlay">

                    <!-- a click on that button will trigger 
                         the animation close event -->
                    <ImageButton
                        android:id="@+id/toolbar_arrow"
                        android:layout_width="48dp"
                        android:layout_height="48dp"
                        android:background="@android:color/transparent"
                        android:src="@drawable/arrow_left" />

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:layout_marginLeft="24dp"
                        android:fontFamily="sans-serif-regular"
                        android:gravity="center_vertical"
                        android:text="Foo Bar Baz"
                        android:textColor="@android:color/white"
                        android:textSize="18sp"
                        android:textStyle="bold"
                        tools:text="Foo Bar Baz" />
                </android.support.v7.widget.Toolbar>
            </LinearLayout>

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

    <!-- content_main just contains a ToggleButton to trigger 
    the animation-->
    <include layout="@layout/content_main" />

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

2 , , . .

MainActivity.java

public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener, View.OnClickListener {

    private final static int ANIMATION_DURATION = 400;
    private ToggleButton mActionButton;
    private View mRevealedToolBar;
    private ImageButton mArrowButton;
    private boolean mIsHidden = true;

    @Override
    protected void onCreate(final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // main toolbar
        final Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        final DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        final ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
        drawer.setDrawerListener(toggle);
        toggle.syncState();

        final NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);

        // trigger circular reveal animation
        mActionButton = (ToggleButton) findViewById(R.id.actionButton);
        mActionButton.setOnClickListener(this);

        // toolbar view to reveal. Inivisible by default
        mRevealedToolBar = findViewById(R.id.revealedToolBar);
        mRevealedToolBar.setVisibility(View.INVISIBLE);

        // button in revealed toolbar to dismiss it
        mArrowButton = (ImageButton) findViewById(R.id.toolbar_arrow);
        mArrowButton.setOnClickListener(this);
    }

    @Override
    public void onBackPressed() {
        final DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        if (drawer.isDrawerOpen(GravityCompat.START)) {
            drawer.closeDrawer(GravityCompat.START);
        } else {
            super.onBackPressed();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(final MenuItem item) {
        if (item.getItemId() == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    @SuppressWarnings("StatementWithEmptyBody")
    @Override
    public boolean onNavigationItemSelected(final MenuItem item) {
        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }



    @Override
    public void onClick(final View view) {

        if (view == mActionButton || view == mArrowButton) {


            // compute started X and Y co-ordinates for the animation + radius
            int x = mRevealedToolBar.getLeft();
            int y = mRevealedToolBar.getBottom();
            int startRadius = 0;
            int endRadius = Math.max(mRevealedToolBar.getWidth(), mRevealedToolBar.getHeight());
            int reverseStartRadius = endRadius;
            int reverseEndRadius = startRadius;



            if (mIsHidden) {

                // show secondary toolbar
                // performing circular reveal when icon will be tapped
                Animator animator = ViewAnimationUtils.createCircularReveal(mRevealedToolBar, x, y, startRadius, endRadius);
                animator.setInterpolator(new AccelerateDecelerateInterpolator());
                animator.setDuration(ANIMATION_DURATION);

                mRevealedToolBar.setVisibility(View.VISIBLE);
                animator.start();
                mIsHidden = false;


            } else {

                // dismiss secondary toolbar
                // performing circular reveal for reverse animation
                Animator animate = ViewAnimationUtils.createCircularReveal(mRevealedToolBar, x, y, reverseStartRadius, reverseEndRadius);
                animate.setInterpolator(new AccelerateDecelerateInterpolator());
                animate.setDuration(ANIMATION_DURATION);

                // to hide layout on animation end
                animate.addListener(new AnimatorListenerAdapter() {
                    @Override
                    public void onAnimationEnd(Animator animation) {
                        super.onAnimationEnd(animation);
                        mRevealedToolBar.setVisibility(View.INVISIBLE);
                        mIsHidden = true;
                    }
                });

                mRevealedToolBar.setVisibility(View.VISIBLE);
                animate.start();
            }
        }
    }
}

, MainActivity, onclick ToggleButton, ( + ) ViewAnimationUtils.createCircularReveal. - , .

onClick reverse, ToggleButton.

, , .

, -.

:

• Link1: Circular-Reveal-Animation GitHub
• 2: , Whatsapp
• Link3: + +

Answer 2

ripple. .

, , rippleview, . , , . , , , .

.

, !