FloatingView


Source link: https://github.com/UFreedom/FloatingView

FloatingView

FloatingView can make the target view floating above the anchor view with cool animation



Links

Usage

Step 1

Add dependencies in build.gradle.

 dependencies {

compile 'com.ufreedom.uikit:FloatingViewLib:1.0.2'
  
}
 

Step 2

Use FloatingBuilder to create a FloatingElement

 FloatingElement builder = new FloatingBuilder()

  .anchorView(View)

  .targetView(View)

  .offsetX(int)

  .offsetY(int)

  .floatingTransition(FloatingTransition)

  .build();
 

The use of FloatingBuilder can be configured to have?

  • anchorView ?Anchor, is you want to float animation in which View above
  • target?Target, The view which you want to float
  • offsetX?X direction of offset, unit PX
  • offsetY: Y direction of offset, unit PX
  • floatingTransition : Floating effect, the default is ScaleFloatingTransition

Step 3

Create a Floating as a FloatingElement container, and then let your View fly up

 Floating floating = new Floating(getActivity());

  floating.startFloating(builder);

Customisation

####1.Coordinates

####2.Class Diagram

####3.Floating Animation

Implementation of floating animation is very simple, you only need to implement the FloatingTransition interface.

 public interface FloatingTransition {

public void applyFloating(YumFloating yumFloating);

  
}
 

In the applyFloating method, you can use Android Animation to do the animation, and then use the YumFloating to do Alpha , Scale, Translate, Rotate and other transformations. If you want to add the Facebook Rebound animation effect, you can use the SpringHelper, for example, ScaleFloatingTransition:

 public class ScaleFloatingTransition implements FloatingTransition {

...

 @Override
  public void applyFloating(final YumFloating yumFloating) {

ValueAnimator alphaAnimator = ObjectAnimator.ofFloat(1.0f, 0.0f);

alphaAnimator.setDuration(duration);

alphaAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {

 @Override

 public void onAnimationUpdate(ValueAnimator valueAnimator) {

  yumFloating.setAlpha((Float) valueAnimator.getAnimatedValue());

 
}

}
);

alphaAnimator.start();

 SpringHelper.createWithBouncinessAndSpeed(0.0f, 1.0f,bounciness, speed)

  .reboundListener(new SimpleReboundListener(){

@Override

public void onReboundUpdate(double currentValue) {

 yumFloating.setScaleX((float) currentValue);

 yumFloating.setScaleY((float) currentValue);

}

  
}
).start(yumFloating);

  
}

}
  

If SpringHelper can not meet your needs, you can directly use the createSpringByBouncinessAndSpeed(double bounciness, double speed) or createSpringByTensionAndFriction(double tension, double friction) to create the Spring, and then use transition (Progress double, startValue float, endValue float) for numerical conversion

####4.Floating Path Animation The floating path animation is also very simple, such as CurveFloatingPathTransition, first you need to inherit from the BaseFloatingPathTransition class ,The difference is, you need to implement a getFloatingPath () method. Use Path in the getFloatingPath ()method to create the path you want to float, and then call FloatingPath.create (path, false) to return. For example, CurveFloatingPathTransition implementation:

 public class CurveFloatingPathTransition extends BaseFloatingPathTransition {

 ...

 @Override

public FloatingPath getFloatingPath() {

 if (path == null){

  path = new Path();

  path.moveTo(0, 0);

  path.quadTo(-100, -200, 0, -300);

  path.quadTo(200, -400, 0, -500);

 
}

 return FloatingPath.create(path, false);

}

 @Override

public void applyFloating(final YumFloating yumFloating) {

 ValueAnimator translateAnimator;

 ValueAnimator alphaAnimator;

 translateAnimator = ObjectAnimator.ofFloat(getStartPathPosition(), getEndPathPosition());

 translateAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {

  @Override

  public void onAnimationUpdate(ValueAnimator valueAnimator) {

float value = (float) valueAnimator.getAnimatedValue();

PathPosition floatingPosition = getFloatingPosition(value);

yumFloating.setTranslationX(floatingPosition.x);

yumFloating.setTranslationY(floatingPosition.y);

 
}

 
}
);

 ...

}

}

Use Path to describe the path you want to float, and then in applyFloating (YumFloating yumFloating):

  • Use getStartPathPosition () method to obtain the starting position of the path
  • Use getEndPathPosition () method to obtain the end position of the path
  • Use getFloatingPosition(float progress) to get the position of the current progress

getFloatingPosition(float progress)method will return a PathPosition object, its properties x an y representing the current path animation x coordinates and Y coordinates.

Release Log

v1.0.2

Fix bug

v1.0.1

First Version

License

Copyright 2015 UFreedom  Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License. You may obtain a copy of the License at
  http://www.apache.org/licenses/LICENSE-2.0  Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. 

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