Android常用动画alpha和rotate同时使用

时间：2022-06-08 13:15:59

Android的动画可以是一种动画，也可以多种动画作用于一张图片上，如RotaeAnimation和AlphaAnimation同时放到一个配置文件中

alpha1.xml

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

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

    android:interpolator="@android:anim/accelerate_interpolator" >

    <alpha

        android:duration="3000"

        android:fromAlpha="1.0"

        android:toAlpha="0.0"

        android:startOffset="500" />

    <rotate

        android:duration="3000"

        android:fromDegrees="0"

        android:pivotX="50%"

        android:pivotY="50%"

        android:toDegrees="+360" />

</set>
package com.example.animation;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.animation.Animation;

import android.view.animation.AnimationUtils;

import android.widget.Button;

import android.widget.ImageView;

import com.example.widgetdemo.R;

public class AnimationXmlDemo2 extends Activity{

	private Button alpha = null;

	private ImageView image = null;

	@Override

	protected void onCreate(Bundle savedInstanceState) {

		// TODO Auto-generated method stub

		super.onCreate(savedInstanceState);

		setContentView(R.layout.animation_xml2);

		alpha = (Button) findViewById(R.id.alpha);

		image = (ImageView) findViewById(R.id.image);

		alpha.setOnClickListener(new alphaListener());

	}

	class alphaListener implements OnClickListener {

		@Override

		public void onClick(View arg0) {

			// TODO Auto-generated method stub

			Animation animation = AnimationUtils.loadAnimation(AnimationXmlDemo2.this, R.anim.alpha1);

			image.startAnimation(animation);

		}

	}

}

Android常用动画alpha和rotate同时使用

点击alpha演示看到的效果是图片一边旋转一边消失

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