android 属性动画

package com.example.objectanimator;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.animation.ValueAnimator;
import android.animation.ValueAnimator.AnimatorUpdateListener;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.AccelerateDecelerateInterpolator;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.LinearInterpolator;
import android.widget.Button;
import android.widget.TextView;

/***********************************
 * android 属性动画是在android 3.0出现的，
 * 
 * 要想向低版本兼容可以使用开源框架nieoldandroid动画
 * 
 * 
 * **********************************/
public class MainActivity extends Activity {
	TextView textview;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		textview = (TextView) this.findViewById(R.id.textview);
		Button button = (Button) this.findViewById(R.id.button);
		button.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				//textviewAnimation(textview);
				//valueAnimatorTest();
				//animationSet(textview);
				viewPropertyAnimatorTest(textview);
			}
		});
		
	
	}
	
	private void textviewAnimation(TextView textview){
		float startx = textview.getTranslationX();
		ObjectAnimator animator = ObjectAnimator.ofFloat(textview, "translationX", startx,-500f,startx);
		animator.setRepeatCount(100);
		//animator.setRepeatMode(RE);
		animator.setInterpolator(new LinearInterpolator());//线性运行
		animator.setDuration(1000);
		animator.start();
	}
	
	private void valueAnimatorTest(){
		ValueAnimator valueAnimator = ValueAnimator.ofFloat(0,94,9,58);//值的改变从0-94-9-58依次改变
		valueAnimator.setDuration(1000);
		//监听值的变化（哈哈）
		valueAnimator.addUpdateListener(new AnimatorUpdateListener() {
			
			@Override
			public void onAnimationUpdate(ValueAnimator anim) {
				float value = (float) anim.getAnimatedValue();
				Log.e("current value is ", value+"");
			}
		});
		valueAnimator.start();
	}
	
	//集合动画
	private void animationSet(TextView textview){
		
		float  transx = (float) textview.getTranslationX();
		//动画集合对象
		AnimatorSet animatorSet = new AnimatorSet();
		//动画监听
		animatorSet.addListener(new AnimatorListenerAdapter(){
			@Override
			public void onAnimationEnd(Animator animation) {
				Log.i("----------AnimatorSet anim is finish-------------", "aa");
			}
		});
		
	    ObjectAnimator transAnim = ObjectAnimator.ofFloat(textview, "translationX", transx,-500f,transx);//平移
	    ObjectAnimator alphaAnim = ObjectAnimator.ofFloat(textview, "alpha", 1f,0f,1f);//像素
	    ObjectAnimator rotateAnim = ObjectAnimator.ofFloat(textview, "rotation", 0f,360f);//旋转
	    animatorSet.play(rotateAnim).with(transAnim).after(alphaAnim);//先变化像素，再同时旋转动画和平移动画
	    animatorSet.setDuration(2000);
	    animatorSet.setInterpolator(new AccelerateInterpolator());//加速
	    animatorSet.start();
	}
	
	//ViewPropertyAnimator 让动画变得更加简单（此属性是在android 3.1出现的）
	private void viewPropertyAnimatorTest(TextView textview){
		//textview.animate().alpha(0f).setDuration(2000);//将textview由不透明变为透明,动画时长为2秒
		textview.animate().alpha(0f).x(500f).y(500f).setDuration(2000);//将textview由不透明变为透明,动画时长为2秒
	}
	
	
}