android的启动动画,Android：启动动画

packagecom.example.administrator.myapplication;

importandroid.support.v7.app.appcompatactivity;

importandroid.os.bundle;

importandroid.app.activity;

importandroid.content.intent;

importandroid.os.bundle;

importandroid.view.animation.alphaanimation;

importandroid.view.animation.animation;

importandroid.view.animation.animation.animationlistener;

importandroid.widget.imageview;

public classmainactivity extendsappcompatactivity {

imageview welcomeimg= null;

@override

protected voidoncreate(bundlesavedinstancestate) {

super.oncreate(savedinstancestate);

setcontentview(r.layout.activity_main);

welcomeimg= (imageview) this.findviewbyid(r.id.welcome_img);

alphaanimation anima = newalphaanimation(0.3f,1.0f);

anima.setduration(2000);//设置动画显示时间

welcomeimg.startanimation(anima);

anima.setanimationlistener(newanimationimpl());

}

private classanimationimplimplementsanimationlistener

{

@override

public voidonanimationstart(animationanimation) {

welcomeimg.setbackgroundresource(r.drawable.welcome);

}

@override

public voidonanimationend(animationanimation) {

skip(); //动画结束后跳转到别的页面

}

@override

public voidonanimationrepeat(animationanimation) {

}

private voidskip() {

intent intent = newintent();

intent.setclass(mainactivity.this, secondactivity.class);

startactivity(intent);

}

}

}