安卓动画学习（四） ---PropertyValuesHolder的介绍

    public static ObjectAnimator ofPropertyValuesHolder(Object target,PropertyValuesHolder... values)

PropertyValuesHolder

public static PropertyValuesHolder ofFloat(String propertyName, float... values) {         return new FloatPropertyValuesHolder(propertyName, values);     }

private static final HashMap<Class, HashMap<String, Long>> sJNISetterPropertyMap =                 new HashMap<Class, HashMap<String, Long>>();         long mJniSetter;         private FloatProperty mFloatProperty;          Keyframes.FloatKeyframes mFloatKeyframes;         float mFloatAnimatedValue;

 public static ObjectAnimator ofPropertyValuesHolder(Object target,PropertyValuesHolder... values)

    PropertyValuesHolder rotationHolder = PropertyValuesHolder.ofFloat("Rotation", 60f, -60f, 40f, -40f, -20f, 20f, 10f, -10f, 0f);       PropertyValuesHolder colorHolder = PropertyValuesHolder.ofInt("BackgroundColor", 0xffffffff, 0xffff00ff, 0xffffff00, 0xffffffff);       ObjectAnimator animator = ObjectAnimator.ofPropertyValuesHolder(mTextView, rotationHolder, colorHolder);       animator.setDuration(3000);       animator.setInterpolator(new AccelerateInterpolator());       animator.start();

Keyframe

    public static Keyframe ofFloat(float fraction, float value)

    public static PropertyValuesHolder ofKeyframe(String propertyName, Keyframe... values)

Button button = findViewById(R.id.main_useKeyFrameViewBt);         ImageView imageView = findViewById(R.id.main_useKeyFrameViewIv);         Keyframe keyframe = Keyframe.ofFloat(0,0);         Keyframe keyframe0 = Keyframe.ofFloat(0.3f,-200);         Keyframe keyframe1 = Keyframe.ofFloat(0.5f,200);         Keyframe keyframe2 = Keyframe.ofFloat(1f,100);         PropertyValuesHolder holder = PropertyValuesHolder.ofKeyframe("translationY",keyframe,keyframe0         ,keyframe1,keyframe2);          final ObjectAnimator animator = ObjectAnimator.ofPropertyValuesHolder(imageView,holder);         animator.setDuration(3000);         button.setOnClickListener(new View.OnClickListener() {             @Override             public void onClick(View v) {                 animator.start();             }         });

alpha，rotation，rotationX，rotationY,translationX,translationY,scaleX,scaleY

文章来源: 安卓动画学习（四） ---PropertyValuesHolder的介绍

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objectanimator

string

static

hashmap