android动画-Property Animation

Property Animation 属性动画，这个是在Android 3.0中才引进的。

Property Animation其改变的是对象属性对应的值，应用于任何对象，而Tween Animation更改的是绘画的效果，其属性值是没有变化的。

ObjectAnimator:更改对象的属性值

使用方法：

ObjectAnimator translationRight = ObjectAnimator.ofFloat(m_tv, "X",width);

translationRight.setDuration(1500);

translationRight.start();

这是一个平移的效果，ObjectAnimator.ofFloat(m_tv, "X",width);第一个参数是:对象 第二个参数:该对象的属性，属性有必须有对应的getX()和setX()方法，第三个参数:一个可变参数的值

如果只写了一个值，那么就默认从当前的值变为填写的值，如果填写了多个，就按照填写的顺序做相应的变化，

setDuration():设置运行的时间,start():开启

AnimatorSet:将多个ObjectAnimator的效果一直执行或则按照先后顺序执行

ObjectAnimator translationRight = ObjectAnimator.ofFloat(m_tv, "X",width);

ObjectAnimator translationLeft = ObjectAnimator.ofFloat(m_tv, "X", 0f);

ObjectAnimator translationDown = ObjectAnimator.ofFloat(m_tv, "Y",height);

ObjectAnimator translationUp = ObjectAnimator.ofFloat(m_tv, "Y", 0);

AnimatorSet as = new AnimatorSet();

as.play(translationRight).before(translationLeft);

as.play(translationRight).with(translationDown);

as.play(translationLeft).with(translationUp);

paly() with()  before()  after() 设置执行的顺序 start()开启

下面代码的介绍请参考:  http://www.open-open.com/lib/view/open1329994048671.html

ValueAnimator，TypeEvalutors，TimeInterplator，Keyframes

部分示例代码:

<span style="font-family:SimSun;font-size:18px;"><?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/image"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/girl" />

    <EditText
        android:id="@+id/edit_text"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="5dp" />

</LinearLayout></span>

实现:

<span style="font-family:SimSun;font-size:18px;">private void initImageAnimationSet() {
		ImageView image = (ImageView) findViewById(R.id.image);
		ObjectAnimator obOutX = ObjectAnimator.ofFloat(image, "X", 200);
		ObjectAnimator obOutY = ObjectAnimator.ofFloat(image, "Y", 200);
		ObjectAnimator obInX = ObjectAnimator.ofFloat(image, "X", 0);
		ObjectAnimator obInY = ObjectAnimator.ofFloat(image, "Y", 0);
		final AnimatorSet set = new AnimatorSet();
		set.play(obOutX).with(obOutY);
		set.play(obInX).with(obInY);
		set.play(obOutX).before(obInX);
		image.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				set.start();

			}
		});
	}

	/**
	 * ObjectAnimator使用
	 */
	private void initEditObjectAnimator() {
		EditText edt = (EditText) findViewById(R.id.edit_text);
		final ObjectAnimator translationRight = ObjectAnimator.ofFloat(edt,
				"X", 0, 50, -10, 40, -5, 30, -3, 20, -1, 10, 0);
		translationRight.setDuration(1500);

		edt.addTextChangedListener(new TextWatcher() {

			@Override
			public void onTextChanged(CharSequence s, int start, int before,
					int count) {

			}

			@Override
			public void beforeTextChanged(CharSequence s, int start, int count,
					int after) {

			}

			@Override
			public void afterTextChanged(Editable s) {
				if (TextUtils.isEmpty(s.toString())) {
					translationRight.start();
				}
			}
		});
	}</span>

案例代码下载:

效果图: