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Demonstrating morphing a search icon into a search field. To do this we use an AnimatedVectorDrawable (https://developer.android.com/reference/android/graphics/drawable/AnimatedVectorDrawable.html) made up of two paths. The first is the search icon (as a single line) the second is the horizontal bar. We then animate the 'trimPathStart' property …
<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright (C) 2015 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="150dp"
android:height="24dp"
android:viewportWidth="150"
android:viewportHeight="24">
<path
android:name="search"
android:pathData="@string/path_search"
android:strokeWidth="2"
android:strokeColor="#ffffff"
android:strokeAlpha="0.8"
android:strokeLineCap="round" />
<path
android:name="bar"
android:pathData="M0,23 L149,23"
android:strokeWidth="2"
android:strokeColor="#ffffff"
android:strokeAlpha="0.8"
android:strokeLineCap="square" />
</vector>
<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright (C) 2015 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<animated-vector
xmlns:android="http://schemas.android.com/apk/res/android"
android:drawable="@drawable/search_bar">
<target
android:name="search"
android:animation="@animator/anim_search_empty" />
<target
android:name="bar"
android:animation="@animator/anim_bar_fill" />
</animated-vector>
<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright (C) 2015 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<objectAnimator
xmlns:android="http://schemas.android.com/apk/res/android"
android:propertyName="trimPathStart"
android:valueFrom="0"
android:valueTo="1"
android:valueType="floatType"
android:duration="@integer/duration_search"
android:interpolator="@android:interpolator/fast_out_slow_in" />
<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright (C) 2015 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<objectAnimator
xmlns:android="http://schemas.android.com/apk/res/android"
android:propertyName="trimPathStart"
android:valueFrom="1"
android:valueTo="0"
android:valueType="floatType"
android:duration="@integer/duration_bar"
android:interpolator="@android:interpolator/linear_out_slow_in" />
<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright (C) 2015 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="?android:colorPrimary"
tools:context=".MainActivity"
android:onClick="animate">
<ImageView
android:id="@+id/search"
android:layout_gravity="center"
android:layout_width="150dp"
android:layout_height="24dp"
android:src="@drawable/search_bar"
android:onClick="animate" />
<EditText
android:id="@+id/text"
android:layout_width="150dp"
android:layout_height="22dp"
android:layout_gravity="center"
android:background="@null"
android:textSize="12sp"
android:paddingStart="4dp"
android:textColor="?android:colorAccent"
android:alpha="0" />
</FrameLayout>
/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.example.searchbar;
import android.app.Activity;
import android.graphics.drawable.AnimatedVectorDrawable;
import android.os.Bundle;
import android.view.View;
import android.view.animation.AnimationUtils;
import android.view.animation.Interpolator;
import android.widget.ImageView;
import android.widget.TextView;
public class MainActivity extends Activity {
private ImageView iv;
private TextView text;
private AnimatedVectorDrawable searchToBar;
private AnimatedVectorDrawable barToSearch;
private float offset;
private Interpolator interp;
private int duration;
private boolean expanded = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
iv = (ImageView) findViewById(R.id.search);
text = (TextView) findViewById(R.id.text);
searchToBar = (AnimatedVectorDrawable) getResources().getDrawable(R.drawable.anim_search_to_bar);
barToSearch = (AnimatedVectorDrawable) getResources().getDrawable(R.drawable.anim_bar_to_search);
interp = AnimationUtils.loadInterpolator(this, android.R.interpolator.linear_out_slow_in);
duration = getResources().getInteger(R.integer.duration_bar);
// iv is sized to hold the search+bar so when only showing the search icon, translate the
// whole view left by half the difference to keep it centered
offset = -71f * (int) getResources().getDisplayMetrics().scaledDensity;
iv.setTranslationX(offset);
}
public void animate(View view) {
if (!expanded) {
iv.setImageDrawable(searchToBar);
searchToBar.start();
iv.animate().translationX(0f).setDuration(duration).setInterpolator(interp);
text.animate().alpha(1f).setStartDelay(duration - 100).setDuration(100).setInterpolator(interp);
} else {
iv.setImageDrawable(barToSearch);
barToSearch.start();
iv.animate().translationX(offset).setDuration(duration).setInterpolator(interp);
text.setAlpha(0f);
}
expanded = !expanded;
}
}
@eyecatchup

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eyecatchup commented Feb 26, 2015

Nice 👍

@david4034647

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david4034647 commented Feb 27, 2015

so cool

@Frank-Zhu

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Frank-Zhu commented Feb 27, 2015

cool

@mustafasevgi

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mustafasevgi commented Feb 27, 2015

awesome

@chrissd23

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chrissd23 commented Feb 27, 2015

so cool 👍

@kongnanlive

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kongnanlive commented Feb 28, 2015

cool

@kongnanlive

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kongnanlive commented Feb 28, 2015

android:pathData="@string/path_search" path_search?

@lvleo

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lvleo commented Feb 28, 2015

so cool!

@MarkMjw

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MarkMjw commented Feb 28, 2015

"anim_bar_to_search.xml" and "@string/path_search" is missing?

@crosswall

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crosswall commented Feb 28, 2015

cool

@baoyongzhang

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baoyongzhang commented Feb 28, 2015

cool !!

@cokeby190

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cokeby190 commented Feb 28, 2015

Super cool!

@AndroidDeveloperLB

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AndroidDeveloperLB commented Feb 28, 2015

There are missing files... How did you guys test this?
Also, why can't it be in a normal Github repository?

@qiugang

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qiugang commented Mar 1, 2015

so cool!

@ZhaoYukai

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ZhaoYukai commented Mar 1, 2015

"anim_bar_to_search.xml" and "@string/path_search" is missing

@Fichardu

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Fichardu commented Mar 1, 2015

anim_bar_to_search.xml

<animated-vector xmlns:android="http://schemas.android.com/apk/res/android"
                 android:drawable="@drawable/search_bar" >
    <target
        android:animation="@animator/anim_search_fill"
        android:name="search"/>
    <target
        android:animation="@animator/anim_bar_empty"
        android:name="bar"/>
</animated-vector>

@string/path_search

"M141,17 A9,9 0 1,1 142,16 L149,23"
@interchen

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interchen commented Mar 2, 2015

DIAO!

@RoadsInFarAway

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RoadsInFarAway commented Mar 5, 2015

very nb!

@blackiedm

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blackiedm commented Mar 9, 2015

very nb!

@AndroidDeveloperLB

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AndroidDeveloperLB commented Mar 9, 2015

@Fichardu but now "anim_bar_empty" and "anim_search_fill" are missing...
Can anyone please publish the full sample?

@SrishtiRoy

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SrishtiRoy commented Mar 10, 2015

so cool

@MikeWong

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MikeWong commented Mar 10, 2015

nice

@liuchenx

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@wangyeming

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wangyeming commented May 6, 2015

cool!

@YoungLeeForeverBoy

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YoungLeeForeverBoy commented Sep 8, 2015

cool!

@anjanibansal

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anjanibansal commented Dec 23, 2015

Could you please share the complete project? For people like me, who know little about vectors or animations, it's a little difficult to get this to work. This is pretty cool and we can learn a lot from it. Please consider my request.

@Jason-Lee-1001

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Jason-Lee-1001 commented Apr 16, 2016

anim_bar_empty.xml
<?xml version="1.0" encoding="utf-8"?> <objectAnimator xmlns:android="http://schemas.android.com/apk/res/android" android:propertyName="trimPathStart" android:valueFrom="1" android:valueTo="0" android:valueType="floatType" android:duration="500" android:interpolator="@android:interpolator/fast_out_slow_in" />

anim_search_fill.xml
<?xml version="1.0" encoding="utf-8"?> <objectAnimator xmlns:android="http://schemas.android.com/apk/res/android" android:propertyName="trimPathStart" android:valueFrom="0" android:valueTo="1" android:valueType="floatType" android:duration="500" android:interpolator="@android:interpolator/linear_out_slow_in" />

@Github-lxz

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Github-lxz commented Aug 20, 2016

楼主,我还是菜鸟,求完整的代码,发到我QQ邮箱:455207024@qq.com可以么?好希望楼主能给,菜鸟成长之路好艰难啊,求给无私的帮助。感谢

@huilinger

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huilinger commented Mar 26, 2017

good o( ̄▽ ̄)d

@gukandanmobile

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gukandanmobile commented Mar 31, 2017

very nice

@whenthemorningcomes

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whenthemorningcomes commented Jun 21, 2017

How to show only the search icon at the start of activity? And after this search icon click event, the animation should start. Any idea?

@ninjachen

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ninjachen commented Aug 17, 2017

lacks the string file "@string/path_search"

@weizhizhanghao

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weizhizhanghao commented Aug 17, 2017

very nb

@AdityaAnand1

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AdityaAnand1 commented Jul 17, 2018

Is there some preview of how this looks like somewhere?

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