安卓开发基础之tween动画基本使用，代码教学

xml代码块：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
   
    <ImageView
        android:id="@+id/img_animations"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/img1"/>
   
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#ff00ff"/>
   
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_gravity="center_horizontal"
        >
       
        <Button
            android:id="@+id/but1"
            android:layout_weight="1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="旋转"
            android:textColor="#ff00ff"/>
       
        <Button
            android:id="@+id/but2"
            android:layout_weight="1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="10dp"
            android:text="位移"
            android:textColor="#ff00ff"/>
       
        <Button
            android:id="@+id/but3"
            android:layout_weight="1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="10dp"
            android:text="渐变"
            android:textColor="#ff00ff"/>
       
        <Button
            android:id="@+id/but4"
            android:layout_weight="1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="10dp"
            android:text="缩放"
            android:textColor="#ff00ff"/>
       
    </LinearLayout>

</LinearLayout>

JAVA代码块：

package com.sumzom.animations;

import com.example.com.sumzom.teach.R;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
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.widget.Toast;

/**
 * @author sumzom
 * QQ2356066132
 * tween动画基本使用方法
 * */
public class AnimationsTest extends Activity implements OnClickListener{

 private Button but1,but2,but3,but4 = null;
 private ImageView img_animations = null;
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.animations);
  
  initWithView();
  
  initWithLogic();
  
 }

 private void initWithLogic() {
  // TODO Auto-generated method stub
  
 }

 private void initWithView() {
  // TODO Auto-generated method stub
  but1 = (Button) findViewById(R.id.but1);
  but2 = (Button) findViewById(R.id.but2);
  but3= (Button) findViewById(R.id.but3);
  but4 = (Button) findViewById(R.id.but4);
  img_animations = (ImageView) findViewById(R.id.img_animations);
  
  but1.setOnClickListener(this);
  but2.setOnClickListener(this);
  but3.setOnClickListener(this);
  but4.setOnClickListener(this);
 }

 @Override
 public void onClick(View arg0) {
  // TODO Auto-generated method stub
  switch (arg0.getId()) {
  case R.id.but1:
   but1();
   Toast.makeText(getApplicationContext(), "旋转",
     Toast.LENGTH_SHORT).show();
   
   break;
   
        case R.id.but2:
   but2();
         Toast.makeText(getApplicationContext(), "位移",
     Toast.LENGTH_SHORT).show();
         
   break;
   
        case R.id.but3:
   but3();
         Toast.makeText(getApplicationContext(), "渐变",
     Toast.LENGTH_SHORT).show();
         
   break;
   
        case R.id.but4:
   but4();
         Toast.makeText(getApplicationContext(), "缩放",
     Toast.LENGTH_SHORT).show();
         
   break;

  default:
   break;
  }
 }

//缩放
 private void but4() {
  // fromX, toX, fromY, toY, pivotXType,
  //pivotXValue, pivotYType, pivotYValue)
  AnimationSet set = new AnimationSet(true);
  ScaleAnimation animation = new ScaleAnimation(
    0, 0.1f, 0, 0.5f, Animation.RELATIVE_TO_SELF,
    0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
  animation.setDuration(3000);
  set.addAnimation(animation);
  img_animations.startAnimation(set);
 }

/**
 * @author sumzom
 * QQ2356066132
 * tween动画基本使用方法
 * 渐变
 * */
 private void but3() {
  //fromAlpha, toAlpha起始背景透明度，结束透明度
  AnimationSet animationSet = new AnimationSet(true);
  AlphaAnimation alphaAnimation = new AlphaAnimation(1, 0.2f);
  alphaAnimation.setDuration(5000);
  animationSet.addAnimation(alphaAnimation);
  img_animations.startAnimation(animationSet);
 }

//位移
 private void but2() {
  // TODO Auto-generated method stub
  /**
   * @author sumzom
         * QQ2356066132
         * tween动画基本使用方法
   * 1~2参数 fromXType fromXValue：起始位置X类型与值
   * 3~4参数 toXType toXValue：结束位置X类型与值
   * 5~6参数 fromYType fromYValue：起始位置Y类型与值
   * 7~8参数 toYType toYValue：结束位置Y类型与值
   * */
  AnimationSet set = new AnimationSet(true);
  TranslateAnimation TSAM = new TranslateAnimation(
    Animation.RELATIVE_TO_SELF, 0, Animation.RELATIVE_TO_SELF,
    0, Animation.RELATIVE_TO_SELF, 0, Animation.RELATIVE_TO_SELF,
    0.5f);
  TSAM.setDuration(3000);
  set.addAnimation(TSAM);
  img_animations.startAnimation(set);
  
 }
 
 
 //旋转
 private void but1() {
  // TODO Auto-generated method stub
  AnimationSet set = new AnimationSet(true);
  /**
   * @author sumzom
         * QQ2356066132
         * tween动画基本使用方法
   * RotateAnimation:旋转动画
   * 参数一：fromDegrees，起始角度
   * 参数二：toDegrees，结束角度
   * 后四参数确定圆心是哪个
   * 参数三：pivotXType，X坐标类型
   * 参数四：pivotXValue，X值
   * 参数五：pivotYType，Y类型
   * 参数六：pivotYValue，Y值
   * */
  RotateAnimation animation = new RotateAnimation(0, 360,
    Animation.RELATIVE_TO_SELF, 0.5f,
      Animation.RELATIVE_TO_SELF, 0.5f);
  
  animation.setDuration(3000);
  set.addAnimation(animation);
  img_animations.startAnimation(set);
  
 }
 
}

运行效果：