android - Image Fading in Java -

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i facing problem while trying cross fading in android studio. first, have following code cross fading between 2 images. code works fine. 

public class mainactivity extends appcompatactivity {          public void fade(view view) {             imageview front = (imageview) findviewbyid(r.id.front);             imageview image1 = (imageview) findviewbyid(r.id.image1);             front.animate().alpha(0f).setduration(1000);             image1.animate().alpha(1f).setduration(1000);             image1.bringtofront();           }          public void fade1(view view) {             imageview front = (imageview) findviewbyid(r.id.front);             imageview image1 = (imageview) findviewbyid(r.id.image1);             image1.animate().alpha(0f).setduration(2000);             front.animate().alpha(1f).setduration(2000);             front.bringtofront();          }

but, when try same fading using 3 images, code doesn't work. doesn't fade images properly. here code: 

public void fade(view view) {         imageview front = (imageview) findviewbyid(r.id.front);         imageview image1 = (imageview) findviewbyid(r.id.image1);         front.animate().alpha(0f).setduration(1000);         image1.animate().alpha(1f).setduration(1000);         image1.bringtofront();     }      public void fade1(view view) {         imageview image1 = (imageview) findviewbyid(r.id.image1);         imageview image2= (imageview) findviewbyid(r.id.image2);         image1.animate().alpha(0f).setduration(1000);         image2.animate().alpha(1f).setduration(1000);         image2.bringtofront();      }      public void fade2(view view) {         imageview front = (imageview) findviewbyid(r.id.image1);         imageview image2= (imageview) findviewbyid(r.id.image2);         image2.animate().alpha(0f).setduration(1000);         front.animate().alpha(1f).setduration(1000);         front.bringtofront();      }

not sure went wrong. suggestion appreciated. thank you


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