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package com.example.animation;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.animation.TranslateAnimation;import android.widget.ImageView;import android.widget.Toast;public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } public void click(View view){ Toast.makeText(this, "click", Toast.LENGTH_SHORT).show(); } public void move(View view ){ float fromXDelta=0; float toXDelta=0; float fromYDelta=0; float toYDelta=200; TranslateAnimation animation = new TranslateAnimation(fromXDelta, toXDelta, fromYDelta, toYDelta); /** * time */ animation.setDuration(1000); animation.setFillAfter(true); ImageView imageView=(ImageView)findViewById(R.id.imageView); imageView.startAnimation(animation); } } |
这是一般动画，再看属性动画
区别：一般动画变换后只是图片移动了，view的位置不变，然而属性动画view随着图片移动。
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public void move(View view ){ ImageView imageView=(ImageView)findViewById(R.id.imageView); ObjectAnimator.ofFloat(imageView, "translationY", 0f,200f).setDuration(1000).start();} |
多种动画同时进行
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public void move(View view ){ ImageView imageView=(ImageView)findViewById(R.id.imageView); ObjectAnimator.ofFloat(imageView, "translationY", 0f,200f).setDuration(1000).start(); ObjectAnimator.ofFloat(imageView, "translationX", 0f,200f).setDuration(1000).start(); ObjectAnimator.ofFloat(imageView, "rotation", 0,360f).setDuration(1000).start();} |
Google提供了一种更节省系统资源的多种动画同时播放
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public void move(View view ){ ImageView imageView=(ImageView)findViewById(R.id.imageView); PropertyValuesHolder p1=PropertyValuesHolder.ofFloat("rotation", 0,360f); PropertyValuesHolder p2=PropertyValuesHolder.ofFloat("translationX", 0f,200f); PropertyValuesHolder p3=PropertyValuesHolder.ofFloat("translationY", 0f,200f); ObjectAnimator.ofPropertyValuesHolder(imageView, p1,p2,p3).setDuration(1000).start();} |
同时Google提供了animatorset，允许多种不同动画按照用户要求播放，如使用set.palyTpgether() set.playSequentially()
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public void move(View view ){ ImageView imageView=(ImageView)findViewById(R.id.imageView); ObjectAnimator animator1=ObjectAnimator.ofFloat(imageView, "rotation", 0,360f); ObjectAnimator animator2=ObjectAnimator.ofFloat(imageView, "translationX", 0,200f); ObjectAnimator animator3=ObjectAnimator.ofFloat(imageView, "translationY", 0,200f); AnimatorSet set=new AnimatorSet(); //set.playTogether(animator1,animator2,animator3); set.playSequentially(animator1,animator2,animator3); set.setDuration(1000); set.start();} |
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