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Description

๐Ÿš€ A library that helps you animate change in numeric values in a TextView

Programming language: Kotlin
License: Apache License 2.0
Tags: Animations     TextView     Android-library     Animation    

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README

AnimatedCountTextView

A library that helps you animate change in numeric values in a TextView.

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Gradle Dependency

Add the dependency to your app's build.gradle:

implementation 'com.r4sh33d:AnimatedCountTextView:0.0.1'

Usage

Add the AnimatedCountTextView to your layout. 

<com.r4sh33d.animatedcounttextview.AnimatedCountTextView
    app:startWith="0"
    app:endWith="100"
    app:duration="4000"
    app:suffix="%"
    app:numberType="integer"
    android:id="@+id/textView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="0"
    android:textSize="30sp" />

Then call the start() method to start the count: 

countTextView.start()

You can optionally listen for the count end event by setting a CountEndListener

countTextView.countEndListener(object : CountEndListener {
      override fun onCountFinish() {
           // Do something 
      }
   })

If required, you can also stop the count at any time by calling the stop() method:

countTextView.stop()

That's all for basic usage. Your AnimatedCountTextView should animate form your startWith value to endWith value within the given time duration.

Customisation

AnimatedCountTextView attempts to use some default values to simplify the usage. The behaviour can be further customized by setting the following attributes via xml or code.

Start and End values

You can use the xml attributes startWith and the endWith values to specify the value to animate from, and value to animate to, respectively. 

<com.r4sh33d.animatedcounttextview.AnimatedCountTextView
    ...
    app:startWith="0"
    app:endWith="100"/>

or programmatically:

countTextView.startWith(0)
countTextView.endWith(100)

Duration

You can specify the duration(in milliseconds) for the count-up or count-down animation using the duration attribute in xml. 

<com.r4sh33d.animatedcounttextview.AnimatedCountTextView
    ...
    app:duration="4000"/>

or programmatically:

countTextView.duration(4000)

Number Type

You can use NumberType to specify the type of number you want to animate. You can either specify NumberType.Integer() or NumberType.Decimal(). You can also apply custom formatting to display the animated values. Custom formats can be specified by passing a DecimalFormat to NumberType.Integer() or NumberType.Decimal() constructor. The default NumberType is Integer.

<com.r4sh33d.animatedcounttextview.AnimatedCountTextView
    ...
    app:numberType="integer"/>

Programmatically:

countTextView.numberType(NumberType.Decimal(twoDecimalPlacesFormat))
//or 
countTextView.numberType(NumberType.Integer())

Prefix and Suffix

You can specify prefix and/or suffix to the animated values. This is useful if you want to specify a currency symbol as a prefix or the percentage sign as the suffix.

<com.r4sh33d.animatedcounttextview.AnimatedCountTextView
    ...
    app:suffix="%"
    app:prefix="$"/>

or programmatically:

countTextView.prefix("$")
//or 
countTextView.suffix("%")

Interpolator

You can specify the Interpolator to use when animating the values. This can only be done programmatically:

countTextView.interpolator(AccelerateDecelerateInterpolator())

License

Copyright (c) 2019 Rasheed Sulayman.

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.


*Note that all licence references and agreements mentioned in the AnimatedCountTextView README section above are relevant to that project's source code only.