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

下面列出了android.animation.ValueAnimator#ofFloat ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： BookReader 文件： ScreenUtils.java

/**
 * 调整窗口的透明度  1.0f,0.5f 变暗
 *
 * @param from    from>=0&&from<=1.0f
 * @param to      to>=0&&to<=1.0f
 * @param context 当前的activity
 */
public static void dimBackground(final float from, final float to, Activity context) {
    final Window window = context.getWindow();
    ValueAnimator valueAnimator = ValueAnimator.ofFloat(from, to);
    valueAnimator.setDuration(500);
    valueAnimator.addUpdateListener(
            new ValueAnimator.AnimatorUpdateListener() {
                @Override
                public void onAnimationUpdate(ValueAnimator animation) {
                    WindowManager.LayoutParams params = window.getAttributes();
                    params.alpha = (Float) animation.getAnimatedValue();
                    window.setAttributes(params);
                }
            });
    valueAnimator.start();
}

源代码2 项目： adt-leanback-support 文件： Scale.java

@Override
public Animator createAnimator(final ViewGroup sceneRoot, TransitionValues startValues,
        TransitionValues endValues) {
    if (startValues == null || endValues == null) {
        return null;
    }

    final float startScale = (Float) startValues.values.get(PROPNAME_SCALE);
    final float endScale = (Float) endValues.values.get(PROPNAME_SCALE);

    final View view = startValues.view;
    view.setScaleX(startScale);
    view.setScaleY(startScale);

    ValueAnimator animator = ValueAnimator.ofFloat(startScale, endScale);
    animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
        @Override
        public void onAnimationUpdate(ValueAnimator animation) {
            final float scale = (Float) animation.getAnimatedValue();
            view.setScaleX(scale);
            view.setScaleY(scale);
        }
    });
    return animator;
}

源代码3 项目： delion 文件： PaymentRequestUI.java

@Override
public void onLayoutChange(View v, int left, int top, int right, int bottom,
        int oldLeft, int oldTop, int oldRight, int oldBottom) {
    if (mSheetAnimator != null) mSheetAnimator.cancel();

    mRequestView.removeOnLayoutChangeListener(this);
    mContainerHeightDifference = (bottom - top) - (oldBottom - oldTop);

    ValueAnimator containerAnimator = ValueAnimator.ofFloat(1f, 0f);
    containerAnimator.addUpdateListener(new AnimatorUpdateListener() {
        @Override
        public void onAnimationUpdate(ValueAnimator animation) {
            float alpha = (Float) animation.getAnimatedValue();
            update(alpha);
        }
    });

    mSheetAnimator = containerAnimator;
    mSheetAnimator.setDuration(DIALOG_ENTER_ANIMATION_MS);
    mSheetAnimator.setInterpolator(new LinearOutSlowInInterpolator());
    mSheetAnimator.addListener(this);
    mSheetAnimator.start();
}

源代码4 项目： ShapeRipple 文件： ShapeRipple.java

/**
 * Start the {@link #rippleValueAnimator} with specified duration for each ripple.
 *
 * @param millis the duration in milliseconds
 */
void start(int millis) {

    // Do a ripple value renderer
    rippleValueAnimator = ValueAnimator.ofFloat(0f, 1f);
    rippleValueAnimator.setDuration(millis);
    rippleValueAnimator.setRepeatMode(ValueAnimator.RESTART);
    rippleValueAnimator.setRepeatCount(ValueAnimator.INFINITE);
    rippleValueAnimator.setInterpolator(rippleInterpolator);
    rippleValueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
        @Override
        public void onAnimationUpdate(ValueAnimator animation) {
            render((Float) animation.getAnimatedValue());
        }
    });

    rippleValueAnimator.start();
}

源代码5 项目： ReadMark 文件： KLetter.java

@Override
public void startAnim() {
    mAnimator = ValueAnimator.ofFloat(0, 1);
    mAnimator.setDuration(mDuration);
    mAnimator.setRepeatCount(0);
    mAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
        @Override
        public void onAnimationUpdate(ValueAnimator animation) {
            float factor = (float) animation.getAnimatedValue();
            mSweepArg = (int) (180 * factor);
            mSecPoint.y = (int) (mFirPoint.y + 3 * MAX_RADIUS_CIRCLE * factor);
            if(factor > 0.6 && factor < 0.9){
                mFourPoint.x = (int) (mThiPoint.x + (factor - 0.6) / 4 * 10 * MAX_RADIUS_CIRCLE);
                mFifPoint.x = mFourPoint.x;
            }else if(factor > 0.9){
                mFifPoint.y = mSecPoint.y;
            }
        }
    });
    mAnimator.start();
}

源代码6 项目： MiBandDecompiled 文件： MainUIActivity.java

private void m()
{
    if (ad.booleanValue())
    {
        return;
    } else
    {
        ValueAnimator valueanimator = ValueAnimator.ofFloat(new float[] {
            0.0F, 1.0F
        });
        valueanimator.setDuration(100L);
        valueanimator.addListener(new aG(this));
        valueanimator.addUpdateListener(new aH(this));
        valueanimator.start();
        return;
    }
}

源代码7 项目： luckly_recyclerview 文件： TwoFishView.java

/**
 * 开始动画
 */
private void startAnimation() {
    for (int i = 0; i < numberOfCircle; i++) {
        final int index = i;
        fadeAnimator = ValueAnimator.ofFloat(0, 360);
        fadeAnimator.setRepeatCount(ValueAnimator.INFINITE);
        fadeAnimator.setDuration(1700);
        fadeAnimator.setStartDelay((index >= 5 ? index - 5 : index) * 100);
        fadeAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
            @Override
            public void onAnimationUpdate(ValueAnimator animation) {
                rotates[index] = (float) animation.getAnimatedValue();
                invalidate();
            }
        });

        fadeAnimator.start();
    }
}

源代码8 项目： Cinema-App-Concept 文件： ElevationTransition.java

@Override
public Animator createAnimator(ViewGroup sceneRoot, TransitionValues startValues, TransitionValues endValues) {
    if (startValues == null || endValues == null) {
        return null;
    }

    Float startVal = (Float) startValues.values.get(PROPNAME_ELEVATION);
    Float endVal = (Float) endValues.values.get(PROPNAME_ELEVATION);
    if (startVal == null || endVal == null || startVal.floatValue() == endVal.floatValue()) {
        return null;
    }

    final View view = endValues.view;
    ValueAnimator a = ValueAnimator.ofFloat(startVal, endVal);
    a.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
        @Override
        public void onAnimationUpdate(ValueAnimator animation) {
            view.setElevation((float)animation.getAnimatedValue());
        }
    });

    return a;
}

源代码9 项目： DragFooterView 文件： IconRotateController.java

private void startIconRotateAnimator(@DragContainer.DragState int dragState) {
    if (iconRotateAnimator != null && iconRotateAnimator.isRunning()) {
        iconRotateAnimator.cancel();
    }
    if (dragState == DragContainer.DRAG_OUT) {
        dragOutRotateAnimatorExecuted = true;
        dragInRotateAnimatorExecuted = false;
        iconRotateAnimator = ValueAnimator.ofFloat(0.0f, 1.0f);
    } else {
        dragInRotateAnimatorExecuted = true;
        dragOutRotateAnimatorExecuted = false;
        iconRotateAnimator = ValueAnimator.ofFloat(1.0f, 0.0f);
    }
    iconRotateAnimator.setDuration(rotateDuration);
    iconRotateAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
        @Override
        public void onAnimationUpdate(ValueAnimator animation) {
            rotateDegree = (float) animation.getAnimatedValue() * 180;
        }
    });
    iconRotateAnimator.start();
}

源代码10 项目： material-components-android 文件： Hold.java

@NonNull
@Override
public Animator onAppear(
    @NonNull ViewGroup sceneRoot,
    @NonNull View view,
    @Nullable TransitionValues startValues,
    @Nullable TransitionValues endValues) {
  return ValueAnimator.ofFloat(0);
}

源代码11 项目： mollyim-android 文件： InsightsAnimatorSetFactory.java

private static @Nullable Animator createPercentSecureAnimator(@Nullable UpdateListener updateListener) {
  if (updateListener == null) return null;

  final ValueAnimator percentSecureAnimator = ValueAnimator.ofFloat(1f, PERCENT_SECURE_MAX_SCALE, 1f);

  percentSecureAnimator.setStartDelay(ANIMATION_START_DELAY);
  percentSecureAnimator.setDuration(PERCENT_SECURE_ANIMATION_DURATION);
  percentSecureAnimator.addUpdateListener(animation -> updateListener.onUpdate((float) animation.getAnimatedValue()));

  return percentSecureAnimator;
}

源代码12 项目： Telegram 文件： PullForegroundDrawable.java

private void updateTextProgress(float pullProgress) {
    boolean endText = pullProgress > SNAP_HEIGHT;
    if (animateToEndText != endText) {
        animateToEndText = endText;
        if (textInProgress == 0f) {
            if (textSwipingAnimator != null) {
                textSwipingAnimator.cancel();
            }
            textSwappingProgress = endText ? 0f : 1f;
        } else {
            if (textSwipingAnimator != null) {
                textSwipingAnimator.cancel();
            }
            textSwipingAnimator = ValueAnimator.ofFloat(textSwappingProgress, endText ? 0f : 1f);
            textSwipingAnimator.addUpdateListener(textSwappingUpdateListener);
            textSwipingAnimator.setInterpolator(new LinearInterpolator());
            textSwipingAnimator.setDuration(170);
            textSwipingAnimator.start();
        }
    }

    if (endText != arrowAnimateTo) {
        arrowAnimateTo = endText;
        if (arrowRotateAnimator != null) {
            arrowRotateAnimator.cancel();
        }
        arrowRotateAnimator = ValueAnimator.ofFloat(arrowRotateProgress, arrowAnimateTo ? 0f : 1f);
        arrowRotateAnimator.addUpdateListener(animation -> {
            arrowRotateProgress = (float) animation.getAnimatedValue();
            if (cell != null) {
                cell.invalidate();
            }
        });
        arrowRotateAnimator.setInterpolator(CubicBezierInterpolator.EASE_BOTH);
        arrowRotateAnimator.setDuration(250);
        arrowRotateAnimator.start();
    }
}

源代码13 项目： Tutors 文件： MainActivity.java

private void initViews() {
    this.buttonOk = (Button) findViewById(R.id.button_ok);
    this.buttonShow = (Button) findViewById(R.id.button_show);
    this.textDescription = (TextView) findViewById(R.id.text_description);
    this.buttonHello = (Button) findViewById(R.id.button_hello);
    this.toolbar = (Toolbar) findViewById(R.id.toolbar);

    setSupportActionBar(toolbar);

    tutors = new TutorsBuilder()
            .textColorRes(android.R.color.white)
            .shadowColorRes(R.color.shadow)
            .textSizeRes(R.dimen.textNormal)
            .completeIconRes(R.drawable.ic_cross_24_white)
            .spacingRes(R.dimen.spacingNormal)
            .lineWidthRes(R.dimen.lineWidth)
            .cancelable(false)
            .build();

    buttonShow.setOnClickListener(this);

    tutors.setListener(this);

    ValueAnimator animator = ValueAnimator.ofFloat(0f, 1f);
    animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
        @Override
        public void onAnimationUpdate(ValueAnimator animation) {
            MainActivity.this.buttonHello.setAlpha((Float) animation.getAnimatedValue());
        }
    });

    animator.setDuration(500);
    animator.setRepeatMode(ValueAnimator.REVERSE);
    animator.setRepeatCount(-1);
    animator.start();
}

源代码14 项目： Telegram 文件： ProxySettingsActivity.java

private void setShareDoneEnabled(boolean enabled, boolean animated) {
    if (shareDoneEnabled != enabled) {
        if (shareDoneAnimator != null) {
            shareDoneAnimator.cancel();
        } else if (animated) {
            shareDoneAnimator = ValueAnimator.ofFloat(0f, 1f);
            shareDoneAnimator.setDuration(200);
            shareDoneAnimator.addUpdateListener(a -> {
                shareDoneProgress = AndroidUtilities.lerp(shareDoneProgressAnimValues, a.getAnimatedFraction());
                shareCell.setTextColor(ColorUtils.blendARGB(Theme.getColor(Theme.key_windowBackgroundWhiteGrayText2), Theme.getColor(Theme.key_windowBackgroundWhiteBlueText4), shareDoneProgress));
                doneItem.setAlpha(shareDoneProgress / 2f + 0.5f);
            });
        }
        if (animated) {
            shareDoneProgressAnimValues[0] = shareDoneProgress;
            shareDoneProgressAnimValues[1] = enabled ? 1f : 0f;
            shareDoneAnimator.start();
        } else {
            shareDoneProgress = enabled ? 1f : 0f;
            shareCell.setTextColor(enabled ? Theme.getColor(Theme.key_windowBackgroundWhiteBlueText4) : Theme.getColor(Theme.key_windowBackgroundWhiteGrayText2));
            doneItem.setAlpha(enabled ? 1f : .5f);
        }
        shareCell.setEnabled(enabled);
        doneItem.setEnabled(enabled);
        shareDoneEnabled = enabled;
    }
}

源代码15 项目： ClockView 文件： PieChatView.java

private void initAnimator() {
    ValueAnimator anim = ValueAnimator.ofFloat(0, 360);
    anim.setDuration(10000);
    anim.setInterpolator(new AccelerateDecelerateInterpolator());
    anim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {

        @Override
        public void onAnimationUpdate(ValueAnimator valueAnimator) {
            animatedValue = (float) valueAnimator.getAnimatedValue();
            invalidate();
        }
    });
    anim.start();
}

源代码16 项目： bottomsheetrecycler 文件： BottomSheetBehavior.java

private void createShapeValueAnimator() {
    interpolatorAnimator = ValueAnimator.ofFloat(0f, 1f);
    interpolatorAnimator.setDuration(CORNER_ANIMATION_DURATION);
    interpolatorAnimator.addUpdateListener(
            new AnimatorUpdateListener() {
                @Override
                public void onAnimationUpdate(ValueAnimator animation) {
                    float value = (float) animation.getAnimatedValue();
                    if (materialShapeDrawable != null) {
                        materialShapeDrawable.setInterpolation(value);
                    }
                }
            });
}

源代码17 项目： QRefreshLayout 文件： QRefreshLayout.java

private void animateToSecondFloor() {
    if (isAnimating) return;
    isAnimating = true;
    if (animatorToSecondFloor == null) {
        animatorToSecondFloor = ValueAnimator.ofFloat(overScroll, viewContentHeight);
        animatorToSecondFloor.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
            @Override
            public void onAnimationUpdate(ValueAnimator animation) {
                float height = (float) animation.getAnimatedValue();
                overScroll = height;
                viewRefreshContainer.setTranslationY(overScroll / 2);
                viewLoadContainer.setTranslationY(overScroll / 2);
                viewRefresh.setHeight(Math.abs(overScroll), loadMidHeight, viewContentHeight);
                viewTarget.setTranslationY(overScroll);
                if (height == viewContentHeight) {
                    isAnimating = false;
                    isInSecondFloor = true;
                    viewRefresh.setToSecondFloor();
                }
            }
        });
        animatorToSecondFloor.setDuration(animateDuration);
    } else {
        animatorToSecondFloor.setFloatValues(overScroll, viewContentHeight);
    }
    animatorToSecondFloor.start();
}

源代码18 项目： materialsquareloading 文件： MaterialSquareLoading.java

public static ValueAnimator createCosinusValueAnimator(final float start, final float end, final CosinusAnimatorUpdateListener listener) {
  ValueAnimator valueAnimator = ValueAnimator.ofFloat((float) (-Math.PI), (float) (Math.PI));
  valueAnimator.setInterpolator(new LinearInterpolator());
  if (listener != null) {
    valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
      @Override public void onAnimationUpdate(ValueAnimator animation) {
        double offset = (Math.cos((float) animation.getAnimatedValue()) + 1) / 2;
        float value = (float) (start + (end - start) * offset);
        listener.onCosinusAnimatorUpdate(value);
      }
    });
  }
  return valueAnimator;
}

源代码19 项目： hellocharts-android 文件： ChartDataAnimatorV14.java

public ChartDataAnimatorV14(Chart chart) {
    this.chart = chart;
    animator = ValueAnimator.ofFloat(0.0f, 1.0f);
    animator.addListener(this);
    animator.addUpdateListener(this);
}

源代码20 项目： FocusLayoutManager 文件： FocusLayoutManager.java

private void startValueAnimator(int position) {
        cancelAnimator();

        final float distance = getScrollToPositionOffset(position);
//        log("onceLength = " + onceCompleteScrollLength);
//        log("curoffset = " + mHorizontalOffset + ";distance = " + distance + ";endOffset = " +
// (mHorizontalOffset + distance));
//        log("currentpos = " + ((int) (Math.abs(mHorizontalOffset) / (int)
// onceCompleteScrollLength)) + ";end pos = " + ((mHorizontalOffset + distance) %
// onceCompleteScrollLength));
//        log("current fra = " + ((Math.abs(mHorizontalOffset) % onceCompleteScrollLength) /
// (onceCompleteScrollLength * 1.0f)) + ";end fra = " + (Math.abs(mHorizontalOffset + distance) %
// onceCompleteScrollLength) / (onceCompleteScrollLength * 1.0f));

        long minDuration = autoSelectMinDuration;
        long maxDuration = autoSelectMaxDuration;
        long duration;
        float distanceFraction = (Math.abs(distance) / (onceCompleteScrollLength));
        if (distance <= onceCompleteScrollLength) {
            duration = (long) (minDuration + (maxDuration - minDuration) * distanceFraction);
        } else {
            duration = (long) (maxDuration * distanceFraction);
        }

        selectAnimator = ValueAnimator.ofFloat(0.0f, distance);
        selectAnimator.setDuration(duration);
        selectAnimator.setInterpolator(new LinearInterpolator());
        final float startedOffset =
                (focusOrientation == FOCUS_LEFT || focusOrientation == FOCUS_RIGHT) ?
                        mHorizontalOffset : mVerticalOffset;

        selectAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
            @Override
            public void onAnimationUpdate(ValueAnimator animation) {
                if (focusOrientation == FOCUS_LEFT || focusOrientation == FOCUS_RIGHT) {
                    if (mHorizontalOffset < 0) {
                        mHorizontalOffset =
                                (long) Math.floor(startedOffset + (float) animation.getAnimatedValue());
                    } else {
                        mHorizontalOffset =
                                (long) Math.ceil(startedOffset + (float) animation.getAnimatedValue());
                    }
                    requestLayout();
                } else if (focusOrientation == FOCUS_TOP || focusOrientation == FOCUS_BOTTOM) {
                    if (mVerticalOffset < 0) {
                        mVerticalOffset =
                                (long) Math.floor(startedOffset + (float) animation.getAnimatedValue());
                    } else {
                        mVerticalOffset =
                                (long) Math.ceil(startedOffset + (float) animation.getAnimatedValue());
                    }
                    requestLayout();
                }

            }
        });
        selectAnimator.start();

    }