Android属性动画特点详解

本文实例为大家分享了Android属性动画使用的具体代码，供大家参考，具体内容如下
MainActivity.java
/*属性动画的特点：动画效果会改变控件的位置.且开启动画的是动画对象,而不是控件对象.    只有旋转的属性动画是经常用的,注意参数.    注意:这些方法都是安卓在3.0以后出现的新特性,所以要把AndroidManifest.xml里的android:minSdkVersion值修改为11以上*///注释后面有222的暂时不用管.public class MainActivity extends AppCompatActivity implements View.OnClickListener {  private ImageButton imageView;  private Button alpha_bt;  private Button rotationY_bt;  private Button scaleX_bt;  private Button translationX_bt;  private Button AnimatorSet_bt;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);//    对控件进行初始化    init();//   此处用的是xml的形式.引用在Xml里的属性动画资源. AnimatorInflater.loadAnimator(上下文,R.animator..)222    Animator Xmlanimator = AnimatorInflater.loadAnimator(this, R.animator.objectanimator);//   把要做动画控件对象放进去.Animator.setTarget(View对象);222    Xmlanimator.setTarget(imageView);//   开启动画.Animator.start.222    Xmlanimator.start();  }  // 对于控件进行初始化  private void init() {    //找到ImageView控件对象    imageView = (ImageButton) findViewById(R.id.animation_iv);    //找到Button控件对象.    alpha_bt = (Button) findViewById(R.id.alpha_bt);    rotationY_bt = (Button) findViewById(R.id.rotationY_bt);    scaleX_bt = (Button) findViewById(R.id.scaleX_bt);    translationX_bt = (Button) findViewById(R.id.translationY_bt);    AnimatorSet_bt = (Button) findViewById(R.id.AnimatorSet_bt);    //为button设置点击事件    alpha_bt.setOnClickListener(this);    rotationY_bt.setOnClickListener(this);    scaleX_bt.setOnClickListener(this);    translationX_bt.setOnClickListener(this);    AnimatorSet_bt.setOnClickListener(this);  }  /**   * 根据点击事件类型.调用控件做属性动画的   *   * @param view   */  @Override  public void onClick(View view) {    switch (view.getId()) {      case R.id.alpha_bt:        //做透明动画,参数1:View,代表你要修改那个控件的属性. 参数2:propertyName代表实现什么样子的动画:"alpha",String类型.        //参数3:float... values,控件修改的参数,new float[]{0.0f, 0.2f, 0.4f, 0.6f, 0.8f, 1.0f}        ObjectAnimator alpha = ObjectAnimator.ofFloat(imageView, "alpha", new float[]{0.0f, 0.2f, 0.4f, 0.6f, 0.8f, 1.0f});        //设置动画执行时长.setDuration        alpha.setDuration(2000);        //设置动画执行的模式setRepeatMode,参数用ObjectAnimator引用.        alpha.setRepeatMode(ObjectAnimator.RESTART);        //设置动画执行的次数.setRepeatCount        alpha.setRepeatCount(1);        //使用ObjectAnimator对象开启动画.        alpha.start();        break;      case R.id.rotationY_bt:        //做旋转动画,"rotationY".rotationX,rotation new float[]{90f, 180f, 270f, 360f}        ObjectAnimator rotationY = ObjectAnimator.ofFloat(imageView, "rotationY", new float[]{90f, 180f, 270f, 360f});        rotationY.setDuration(2000);        rotationY.setRepeatMode(ObjectAnimator.RESTART);        rotationY.setRepeatCount(1);        rotationY.start();        break;      case R.id.scaleX_bt:        //做缩放动画,scaleX,scaleY new float[]{1f, 2f, 3f, 4f, 5f, 6f,1f}        ObjectAnimator scaleX = ObjectAnimator.ofFloat(imageView, "scaleX", new float[]{1f, 2f, 3f, 4f, 5f, 6f, 1f});        scaleX.setDuration(2000);        scaleX.setRepeatMode(ObjectAnimator.RESTART);        scaleX.setRepeatCount(1);        scaleX.start();        break;      case R.id.translationY_bt:        //做平移动画,translationY,translationX new float[]{10f, 20f, 30f, 40f, 60f, 80f}        ObjectAnimator translationY = ObjectAnimator.ofFloat(imageView, "translationY", new float[]{10f, 20f, 30f, 40f, 60f, 80f});        translationY.setDuration(2000);        translationY.setRepeatMode(ObjectAnimator.RESTART);        translationY.setRepeatCount(1);        translationY.start();        //做动画集合AnimatorSet,分别创建两个动画对象.注意playTogether(动画对象...)和playSequentially的区别.最后开启动画.start      case R.id.AnimatorSet_bt:        AnimatorSet set = new AnimatorSet();        ObjectAnimator oa = ObjectAnimator.ofFloat(imageView, "translationX", new float[]{10f, 20f, 30f, 40f, 60f, 80f});        oa.setDuration(3000);        ObjectAnimator oa2 = ObjectAnimator.ofFloat(imageView, "translationY", new float[]{-10f, -20f, -30f, -40f, -60f, -80f});        oa2.setDuration(3000);        set.playTogether(oa, oa2);        set.start();        break;      default:        break;    }  }}
activity_main.xml
在res目录下创建animator文件夹在文件夹里创建以下xml
objectanimator.xml
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作者：FanRQ_
来源：CSDN
原文：https://blog.csdn.net/FanRQ_/article/details/84072052
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