改变动画速率

 

 

准备一张名为picture的图片。

 

 

在main.xml中：

 

<LinearLayout

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

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:background="#000000"

    android:orientation="vertical"

    android:gravity="center_horizontal">

  <ImageView

      android:id="@+id/mlyw"

      android:layout_marginTop="8dp"

      android:layout_width="fill_parent"

      android:layout_height="wrap_content"

      android:src="@drawable/picture"/>

  <Button

      android:id="@+id/but"

      android:layout_width="100dp"

      android:layout_height="40dp"

      android:layout_marginTop="20dp"

      android:background="#3399ff"

      android:textColor="#ffffff"

      android:text="开始移动缩放"/>

</LinearLayout>

 

 

 

 

 

在MyAnimationDemo.java中：

 

package com.li.animation;

 

import android.os.Bundle;

import android.annotation.SuppressLint;

import android.app.Activity;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.animation.AccelerateInterpolator;

import android.view.animation.AlphaAnimation;

import android.view.animation.Animation;

import android.view.animation.AnimationSet;

import android.view.animation.RotateAnimation;

import android.view.animation.ScaleAnimation;

import android.view.animation.TranslateAnimation;

import android.widget.Button;

import android.widget.ImageView;

import android.support.v4.app.NavUtils;

 

@SuppressLint("ParserError")

public class MyAnimationDemo extends Activity {

  private ImageView mlyw = null;

  private Button but = null;

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        super.setContentView(R.layout.main);

        this.mlyw = (ImageView)super.findViewById(R.id.mlyw);

        this.but = (Button)super.findViewById(R.id.but);

        this.but.setOnClickListener(new OnClickListenerImpl());

    }

    private class OnClickListenerImpl implements OnClickListener{

     public void onClick(View v) {

       AnimationSet set = new AnimationSet(true);

       TranslateAnimation tran = new TranslateAnimation(

            Animation.RELATIVE_TO_SELF,0.0f ,  // X轴开始位置

            Animation.RELATIVE_TO_SELF,0.5f ,  // X轴移动的结束位置

            Animation.RELATIVE_TO_SELF,0.0f ,  // Y轴开始位置

            Animation.RELATIVE_TO_SELF,1.5f ); // Y轴移动位置

       ScaleAnimation scale = new ScaleAnimation(1, 0.0f, 1, 0.0f,

            Animation.RELATIVE_TO_SELF, 0.5f,

            Animation.RELATIVE_TO_SELF, 0.5f);

       scale.setRepeatCount(2) ; //重复两次

       set.addAnimation(tran); // 增加动画

       set.addAnimation(scale); // 增加动画

       set.setInterpolator(new AccelerateInterpolator()); //加速

       set.setDuration(5000); // 5秒完成动画

       MyAnimationDemo.this.mlyw.startAnimation(set); // 启动动画

     }

    }

}