android.animation.ValueAnimator#setFrameDelay ( )源码实例Demo

/**
 * Start the animation using the specified  duration, start color and end color.
 * @param duration the animation duration.
 * @param startColor the start color.
 * @param endColor the end color.
 * @return this view.
 */
public GlowingTextView startAnimation(long duration, int startColor, int endColor) {
  if (animator != null) {
    if (animator.isStarted() || animator.isRunning()) animator.end();
  }
  this.initialColor = getCurrentTextColor();
  animator = ValueAnimator.ofInt(startColor, endColor);
  animator.setDuration(duration);
  ValueAnimator.setFrameDelay(40L);
  animator.setRepeatCount(ValueAnimator.INFINITE);
  animator.setRepeatMode(ValueAnimator.REVERSE);
  animator.setEvaluator(new ArgbEvaluator());
  animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
      @Override
      public void onAnimationUpdate(final ValueAnimator animation) {
        if (getContext() instanceof Activity) {
          ((Activity) getContext()).runOnUiThread(new Runnable() {
            @Override
            public void run() {
              setTextColor((Integer) animation.getAnimatedValue() | 0xFF000000);
            }
          });
        }
      }
    });
  animator.start();
  return this;
}
 

private void initialise(AttributeSet attrs) {
    ValueAnimator.setFrameDelay(15); // attempt 60fps
    tilePaint = new Paint();

    progressPaint = new Paint();
    progressPaint.setStyle(Paint.Style.FILL);
    progressPaint.setAntiAlias(true);

    stripePaint = new Paint();
    stripePaint.setStyle(Paint.Style.FILL);
    stripePaint.setAntiAlias(true);

    textPaint = new Paint();
    textPaint.setStyle(Paint.Style.FILL);
    textPaint.setAntiAlias(true);
    textPaint.setColor(ColorUtils.resolveColor(android.R.color.black, getContext()));
    textPaint.setTextSize(DimenUtils.pixelsFromSpResource(getContext(), R.dimen.bootstrap_progress_bar_default_font_size));

    bgPaint = new Paint();
    bgPaint.setStyle(Paint.Style.FILL);
    bgPaint.setColor(ColorUtils.resolveColor(R.color.bootstrap_gray_light, getContext()));

    // get attributes
    TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.BootstrapProgressBar);

    try {
        this.animated = a.getBoolean(R.styleable.BootstrapProgressBar_animated, false);
        this.rounded = a.getBoolean(R.styleable.BootstrapProgressBar_roundedCorners, false);
        this.striped = a.getBoolean(R.styleable.BootstrapProgressBar_striped, false);
        this.showPercentage = a.getBoolean(R.styleable.BootstrapProgressBar_bootstrapshowPercentage, false);
        this.userProgress = a.getInt(R.styleable.BootstrapProgressBar_bootstrapProgress, 0);
        this.maxProgress = a.getInt(R.styleable.BootstrapProgressBar_bootstrapMaxProgress, 100);

        int typeOrdinal = a.getInt(R.styleable.BootstrapProgressBar_bootstrapBrand, -1);
        int sizeOrdinal = a.getInt(R.styleable.BootstrapProgressBar_bootstrapSize, -1);

        this.bootstrapSize = DefaultBootstrapSize.fromAttributeValue(sizeOrdinal).scaleFactor();
        this.bootstrapBrand = DefaultBootstrapBrand.fromAttributeValue(typeOrdinal);
        this.drawnProgress = userProgress;
    } finally {
        a.recycle();
    }

    textPaint.setColor(bootstrapBrand.defaultTextColor(getContext()));
    textPaint.setTextSize((DimenUtils.pixelsFromSpResource(getContext(), R.dimen.bootstrap_button_default_font_size)) * this.bootstrapSize );
    updateBootstrapState();
    setProgress(this.userProgress);
    setMaxProgress(this.maxProgress);
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.orrery_main);

	ImageView orrery = (ImageView) findViewById(R.id.orrery);
	OrreryDrawable myOrreryDrawable = OrreryDrawable.Create();
	orrery.setImageDrawable(myOrreryDrawable);

	// ================================================================
	// 分别控制两种属性的动画
	// PropertyValuesHolder earthPositionValues = PropertyValuesHolder
	// .ofFloat("EarthPosition", 0, (float) (2 * Math.PI));
	// PropertyValuesHolder moonPositionValues =
	// PropertyValuesHolder.ofFloat(
	// "MoonPosition", 0, (float) (2 * Math.PI * 13));
	// ObjectAnimator orreryAnimator =
	// ObjectAnimator.ofPropertyValuesHolder(
	// myOrreryDrawable, earthPositionValues, moonPositionValues);

	// ================================================================
	// 使用新的数据结构，同时控制地球和月球
	OrreryDrawable.SolarSystemData startSolarSystemData = new OrreryDrawable.SolarSystemData();
	startSolarSystemData.rotationEarth = 0;
	startSolarSystemData.rotationMoon = 0;
	OrreryDrawable.SolarSystemData endSolarSystemData = new OrreryDrawable.SolarSystemData();
	endSolarSystemData.rotationEarth = (float) (2 * Math.PI);
	endSolarSystemData.rotationMoon = (float) (2 * Math.PI * 13);
	// 使用自定义的Evaluator
	OrreryEvaluator orreryEvaluator = new OrreryEvaluator();
	// ObjectAnimator orreryAnimator = ObjectAnimator.ofObject(
	// myOrreryDrawable, "SolarSystemData", orreryEvaluator,
	// startSolarSystemData, endSolarSystemData);

	// ================================================================
	// 尝试一下Keyframe
	Keyframe startFrame = Keyframe.ofObject(0, startSolarSystemData);
	Keyframe endFrame = Keyframe.ofObject(1, endSolarSystemData);
	PropertyValuesHolder solarSystemFrames = PropertyValuesHolder
			.ofKeyframe("SolarSystemData", startFrame, endFrame);
	solarSystemFrames.setEvaluator(orreryEvaluator);

	ObjectAnimator orreryAnimator = ObjectAnimator.ofPropertyValuesHolder(
			myOrreryDrawable, solarSystemFrames);

	// Default value is 10
	Log.i("FrameDelay", "delay: " + ValueAnimator.getFrameDelay());
	ValueAnimator.setFrameDelay(50);

	orreryAnimator.setDuration(60000);
	orreryAnimator.setInterpolator(new LinearInterpolator());
	orreryAnimator.setRepeatCount(ValueAnimator.INFINITE);
	orreryAnimator.setRepeatMode(ValueAnimator.RESTART);

	orreryAnimator.start();

	// add the fragment:
	FragmentTransaction ft = getFragmentManager().beginTransaction();

	ft.setCustomAnimations(R.anim.fade_in, android.R.animator.fade_out);
	ft.add(R.id.frame, new OrreryInfo());
	ft.commit();
}