I am trying to animate a vector path to a different path in my android app for testing but its not working properly . no animation is displayed on screen and neither any animation is shown.
My vector file is:
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="8dp"
android:height="5dp"
android:viewportWidth="8"
android:viewportHeight="5">
<path
android:name="redot"
android:pathData="M2.5,2.5L6,2.5"
android:strokeWidth="4"
android:fillColor="#00000000"
android:strokeColor="#E61B1B"
android:fillType="evenOdd"
android:strokeLineCap="round"/>
</vector>
And my VectorAnimation file is:
<?xml version="1.0" encoding="utf-8"?>
<animated-vector xmlns:tools="http://schemas.android.com/tools"
xmlns:android="http://schemas.android.com/apk/res/android"
tools:targetApi="lollipop"
android:drawable="@drawable/ic_reddot">
<target
android:animation="@anim/redanim"
android:name="redot"/>
</animated-vector>
My Animation file in anim folder is:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<objectAnimator
android:duration="10000"
android:propertyName="pathData"
android:valueFrom="M2.5,2.5L6,2.5"
android:valueTo="M2.5,2.5L31,2.5"
android:valueType="pathType" />
</set>
And finally my MainActivityCode is as following:
public class MainActivity extends AppCompatActivity {
private TextView testObj;
private ImageView reddot;
private AnimatedVectorDrawable animation;
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// testObj = (TextView) findViewById(R.id.testObj);
// testObj.setVisibility(View.INVISIBLE);
reddot = (ImageView) findViewById(R.id.reddot);
Drawable d = reddot.getBackground();
if (d instanceof AnimatedVectorDrawable) {
Log.d("testanim", "onCreate: instancefound" );
animation = (AnimatedVectorDrawable) d;
animation.start();
}
}
}
Use Shape Shifter tool and than export the animated vector drawable file generated by shape shifter . add this file in your drawable folder and than add this as background to your imageview which you want to animate
my avd_anim.xml file:
<animated-vector
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:aapt="http://schemas.android.com/aapt">
<aapt:attr name="android:drawable">
<vector
android:name="vector"
android:width="80dp"
android:height="12dp"
android:viewportWidth="80"
android:viewportHeight="12">
<path
android:name="path"
android:pathData="M 6 6 L 74 6"
android:strokeColor="#e61b1b"
android:strokeWidth="12"
android:strokeLineCap="round"
android:fillType="evenOdd"/>
</vector>
</aapt:attr>
<target android:name="path">
<aapt:attr name="android:animation">
<objectAnimator
android:propertyName="pathData"
android:duration="1000"
android:valueFrom="M 6 6 L 74 6"
android:valueTo="M 6 6 L 1 6"
android:valueType="pathType"
android:interpolator="@android:anim/linear_interpolator"/>
</aapt:attr>
</target>
My activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
tools:context=".MainActivity">
<ImageView
android:id="@+id/object"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:src="@drawable/avd_anim"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
and finally my MainActivity.class
public class MainActivity extends AppCompatActivity {
private ImageView image;
private AnimatedVectorDrawable animation;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
image = (ImageView) findViewById(R.id.object);
}
@Override
protected void onStart() {
super.onStart();
Drawable d = image.getDrawable();
if (d instanceof AnimatedVectorDrawable) {
Log.d("testanim", "onCreate: instancefound" + d.toString());
animation = (AnimatedVectorDrawable) d;
animation.start();
}
}
}
You should use redot.getDrawable()
instead of getBackground()
And if you are using app:srcCompat="@drawable/..."
instead of android:src=@drawable/...
for ImageView
you should add
if (d instanceof AnimatedVectorDrawableCompat) {
AnimatedVectorDrawableCompat avd = (AnimatedVectorDrawableCompat) d;
avd.start();
}
And android:animation="@anim/redanim"
should be android:animation="@animator/redanim"
. Use animator folder
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