animation - How to translate image across the width of relativelayout in android -

i'm trying animate 2 images 1 left right , other right left @ same time. have set left margin left image equal negative of width , same right image out of view. in mainactivity i'm translating them using translationx nothing happening.

here xml file

<relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:id="@+id/rlayout"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:background="@drawable/bg"     tools:context="com.example.bex.mainactivity" >      <imageview         android:id="@+id/imageview1"         android:layout_width="200dp"         android:layout_height="133dp"         android:layout_centerhorizontal="true"         android:layout_centervertical="true"         android:src="@drawable/logo" />      <imageview         android:id="@+id/left"         android:layout_width="100dp"         android:layout_height="75dp"         android:layout_alignparentbottom="true"         android:layout_alignparentleft="true"         android:layout_marginleft="-100dp"         android:src="@drawable/left" />     <imageview        android:id="@+id/right"        android:layout_width="114dp"        android:layout_height="75dp"        android:layout_alignparentbottom="true"        android:layout_alignparentright="true"        android:layout_marginright="-114dp"        android:src="@drawable/right" />  </relativelayout> 

here mainactivity.java

import android.app.activity; import android.os.bundle; import android.widget.imageview; import android.widget.relativelayout;  public class mainactivity extends activity {      @override     protected void oncreate(bundle savedinstancestate) {          super.oncreate(savedinstancestate);          settheme(r.style.appbasetheme1);          setcontentview(r.layout.activity_main);           relativelayout r = (relativelayout)findviewbyid(r.id.rlayout);          imageview left = (imageview)findviewbyid(r.id.left);          imageview right = (imageview)findviewbyid(r.id.right);           left.animate().translationx(r.getwidth()).setduration(2000);          right.animate().translationx(-r.getwidth()).setduration(2000);      }    } 

please tell me correct or possible way that

thanks in advance

there 2 base types of animation in android.

the first one.

in order animate translation use example:

translateanimation r = new translateanimation(0,0,0,200); r.setduration(2000l); r.setrepeatcount(0); r.setfillafter(true); view.startanimation(r); 

the second one.

in case, use viewpropertyanimator class. second implementation of animation in android. left.animate().translationx(r.getwidth()).setduration(2000)

in case have setup object animator haven't started it.

try this: left.animate().translationx(r.getwidth()).setduration(2000).start() :)

edit have work:

xml:

<?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:id="@+id/rlayout"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:background="@null">      <imageview         android:id="@+id/imageview1"         android:layout_width="200dp"         android:layout_height="133dp"         android:layout_centerhorizontal="true"         android:layout_centervertical="true"         android:src="@drawable/aqu" />      <imageview         android:id="@+id/left"         android:layout_width="100dp"         android:layout_height="75dp"         android:src="@drawable/ar" />     <imageview        android:id="@+id/right"        android:layout_width="114dp"        android:layout_height="75dp"        android:src="@drawable/ari" />  </relativelayout> 

java-file

@override     protected void oncreate(bundle savedinstancestate) {         // todo auto-generated method stub         super.oncreate(savedinstancestate);         setcontentview(r.layout.dat);          relativelayout r = (relativelayout)findviewbyid(r.id.rlayout);         imageview left = (imageview)findviewbyid(r.id.left);         imageview right = (imageview)findviewbyid(r.id.right);          float distance = 300.f;         translateanimation anim = new translateanimation(0,0,0,distance);         anim.setfillafter(true);         anim.setduration(12000l);          left.startanimation(anim);     } 

but anyway if want animate using ide write this:

objectanimator anim0 = objectanimator.offloat(right, "translationx", 0,300); anim0.setduration(10000l); anim0.start(); 

it works. i've tested.