Progress Button Android

Android Button that morphs into a loading progress bar.

• Fully customizable in the XML
• Really simple to use.
• Makes your app looks cooler ;)

Contents

• Installation
• How to use / Sample
  • Animate and revert animation
  • Show done animation
  • Revert the loading animation with different text or image
• Configure XML
• Bugs and feedback
• Credits

Installation

Set up the dependency

1. Add the mavenCentral() repository to your root build.gradle at the end of repositories:

allprojects {
	repositories {
		...
		mavenCentral()
	}
}

2. Add the LoadingButton dependency in the build.gradle:

implementation group: 'com.apachat', name: 'loadingbutton-android', version: '1.0.11'

Badge:

How to use

Animate and revert animation

Add the button in your layout file and customize it the way you like it.

<com.apachat.loadingbutton.core.customViews.CircularProgressButton
	android:id="@+id/btn_id"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:background="@drawable/circular_border_shape" />
	app:spinning_bar_width="4dp" <!-- Optional -->
	app:spinning_bar_color="#FFF" <!-- Optional -->
	app:spinning_bar_padding="6dp" <!-- Optional -->

Then, instanciate the button

CircularProgressButton btn = (CircularProgressButton) findViewById(R.id.btn_id)
btn.startAnimation();

//[do some async task. When it finishes]
//You can choose the color and the image after the loading is finished
btn.doneLoadingAnimation(fillColor, bitmap);

//[or just revert de animation]
btn.revertAnimation();

You can also add a callback to trigger an action after the startAnimation has finished resizing the button :

btn.startAnimation {
	<start async task>
}

Switch to determinant progress

You can switch between indeterminant and determinant progress:

circularProgressButton.setProgress(10)
...
circularProgressButton.setProgress(50)
...
circularProgressButton.setProgress(100)

- Show 'done' animation

When the loading animation is running, call:

//Choose the color and the image that will be show
circularProgressButton.doneLoadingAnimation(fillColor, bitmap);

- Revert the loading animation with different text or image

progressButton.revertAnimation {
	progressButton.text = "Some new text"
}

or

progressImageButton.revertAnimation {
	progressImageButton.setImageResource(R.drawable.image)
}

- Button State

This button is a state machine and it changes its state during the animation process. The states are:

Before Draw

This state is the initial one, the button is in this state before the View is draw on the screen. This is the state when the button is accesed in the onCreate() of an Activity.

Idle

After the button is drawn in the screen, it gets in the Idle state. It is basically waiting for an animation. Call startAnimation() to start animations with this button.

WAITING_PROGRESS

If the startAnimation() is called before the Idle state, the button goes to this state. The button waits for the button to be drawn in the screen before start the morph animation.

MORPHING

The button stays in this state during the morphing animation.

PROGRESS

After the morph animation, the button start the progress animation. From this state the done and revert animations can happen.

MORPHING_REVERT

The button stays in this state during the morphing animation reversal.

WAITING_DONE

If the doneLoadingAnimation(fillColor: Int, bitmap: Bitmap) is called when the button is still morphing, it enter in this state. The button waits for the morph animation to complete and then start the done animation.

DONE

The button enters this state when the doneLoadingAnimation finishes.

WAITING_TO_STOP

The button enters this state when the stopAnimation() is called before the morph state is completed. The button waits for the morph animation to complete and the stops further animations.

STOPPED

The button enters this state after stopAnimation() when the button is not morphing.

Configure XML

• app:spinning_bar_width : Changes the width of the spinning bar inside the button
• app:spinning_bar_color: Changes the color of the spinning bar inside the button
• app:spinning_bar_padding: Changes the padding of the spinning bar in relation of the button bounds.
• app:initialCornerAngle: The initial corner angle of the animation. Insert 0 if you have a square button.
• app:finalCornerAngle: The final corner angle of the animation.

Problems and troubleshooting

Animation

This library only works with selector as the background, but not with shape as the root tag. Please put your shape inside a selector, like this:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="false" android:state_selected="false">
    <shape android:shape="rectangle">
        <corners android:radius="10dp" />
        <solid android:color="@android:color/transparent" />
        <stroke android:width="3dp"
            android:color="@color/black"/>
    </shape>
</item>
</selector>

I still need to debug this problem.

Manifest merge

This library only supports androidx since prior the version 2.0.0. So don't try to use it with the old Support Library. Use androidx instead.

Bugs and Feedback

For bugs, feature requests, and discussion please use GitHub Issues.

And that's it! Enjoy!