android程序启动动画

新建动画类xml文件

<?xml version= "1.0" encoding ="utf-8"?>

<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <alpha

        android:duration="2000"

        android:fromAlpha="0.3"

        android:toAlpha="1.0" />

    <translate

        android:duration="1000"

        android:fromYDelta="80%" />

</set>

在Activity中载入后启动动画，可添加动画监听器，监听当动画结束后跳转到主界面。

          Animation scale = AnimationUtils. loadAnimation(this, R.anim.scale_anim);

          welcomeImg.startAnimation(scale);

          scale.setAnimationListener( new AnimationListener() {

              

               @Override

               public void onAnimationStart(Animation animation) {

                   

              }

              

               @Override

               public void onAnimationRepeat(Animation animation) {

                   

              }

              

               @Override

               public void onAnimationEnd(Animation animation) {

                   startActivity( new Intent(WelcomeActivity.this ,LoginActivity.class));

                   finish();

              }

          });