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audio_wave's Introduction

Audio wave

A multi purpose simple bar graph with animation. It is highly customizable. You can customize the width and height of widget. And the height, color, and radius of bar also.

audio_wave.gif

Examples

Column(
  children: [
    Text('Audio Wave Example'),
    AudioWave(
      bars: [AudioWaveBar(heightFactor: 1)],
    ),
    AudioWave(
      bars: [
        AudioWaveBar(heightFactor: 1, color: Colors.green),
        AudioWaveBar(heightFactor: 0.1, color: Colors.black),
      ],
    ),
    AudioWave(
      height: 32,
      width: 32,
      spacing: 2.5,
      animationLoop: 3,
      bars: [
        AudioWaveBar(heightFactor: 0.7, color: Colors.lightBlueAccent),
        AudioWaveBar(heightFactor: 0.8, color: Colors.blue),
        AudioWaveBar(heightFactor: 1, color: Colors.black),
        AudioWaveBar(heightFactor: 0.9),
      ],
    ),
    AudioWave(
      height: 32,
      width: 88,
      spacing: 2.5,
      bars: [
        AudioWaveBar(heightFactor: 0.1, color: Colors.lightBlueAccent),
        AudioWaveBar(heightFactor: 0.2, color: Colors.blue),
        AudioWaveBar(heightFactor: 0.3, color: Colors.black),
        AudioWaveBar(heightFactor: 0.4),
        AudioWaveBar(heightFactor: 0.5, color: Colors.orange),
        AudioWaveBar(heightFactor: 0.6, color: Colors.lightBlueAccent),
        AudioWaveBar(heightFactor: 0.7, color: Colors.blue),
        AudioWaveBar(heightFactor: 0.8, color: Colors.black),
        AudioWaveBar(heightFactor: 0.9),
        AudioWaveBar(heightFactor: 1, color: Colors.orange),
        AudioWaveBar(heightFactor: 0.1, color: Colors.lightBlueAccent),
        AudioWaveBar(heightFactor: 0.2, color: Colors.blue),
        AudioWaveBar(heightFactor: 0.3, color: Colors.black),
        AudioWaveBar(heightFactor: 0.4),
        AudioWaveBar(heightFactor: 0.5, color: Colors.orange),
        AudioWaveBar(heightFactor: 0.6, color: Colors.lightBlueAccent),
        AudioWaveBar(heightFactor: 0.7, color: Colors.blue),
        AudioWaveBar(heightFactor: 0.8, color: Colors.black),
        AudioWaveBar(heightFactor: 0.9),
        AudioWaveBar(heightFactor: 1, color: Colors.orange),
      ],
    ),
    AudioWave(
      height: 32,
      width: 88,
      spacing: 2.5,
      alignment: 'top',
      animationLoop: 2,
      beatRate: Duration(milliseconds: 50),
      bars: [
        AudioWaveBar(heightFactor: 0.1, color: Colors.lightBlueAccent),
        AudioWaveBar(heightFactor: 0.2, color: Colors.blue),
        AudioWaveBar(heightFactor: 0.3, color: Colors.black),
        AudioWaveBar(heightFactor: 0.4),
        AudioWaveBar(heightFactor: 0.5, color: Colors.orange),
        AudioWaveBar(heightFactor: 0.6, color: Colors.lightBlueAccent),
        AudioWaveBar(heightFactor: 0.7, color: Colors.blue),
        AudioWaveBar(heightFactor: 0.8, color: Colors.black),
        AudioWaveBar(heightFactor: 0.9),
        AudioWaveBar(heightFactor: 1, color: Colors.orange),
        AudioWaveBar(heightFactor: 0.1, color: Colors.lightBlueAccent),
        AudioWaveBar(heightFactor: 0.2, color: Colors.blue),
        AudioWaveBar(heightFactor: 0.3, color: Colors.black),
        AudioWaveBar(heightFactor: 0.4),
        AudioWaveBar(heightFactor: 0.5, color: Colors.orange),
        AudioWaveBar(heightFactor: 0.6, color: Colors.lightBlueAccent),
        AudioWaveBar(heightFactor: 0.7, color: Colors.blue),
        AudioWaveBar(heightFactor: 0.8, color: Colors.black),
        AudioWaveBar(heightFactor: 0.9),
        AudioWaveBar(heightFactor: 1, color: Colors.orange),
      ],
    ),
    AudioWave(
      height: 32,
      width: 160,
      spacing: 5,
      alignment: 'bottom',
      animationLoop: 2,
      beatRate: Duration(milliseconds: 50),
      bars: [
        AudioWaveBar(heightFactor: 1, color: Colors.lightBlueAccent),
        AudioWaveBar(heightFactor: 0.9, color: Colors.blue),
        AudioWaveBar(heightFactor: 0.8, color: Colors.black),
        AudioWaveBar(heightFactor: 0.7),
        AudioWaveBar(heightFactor: 0.6, color: Colors.orange),
        AudioWaveBar(heightFactor: 0.5, color: Colors.lightBlueAccent),
        AudioWaveBar(heightFactor: 0.4, color: Colors.blue),
        AudioWaveBar(heightFactor: 0.3, color: Colors.black),
        AudioWaveBar(heightFactor: 0.2),
        AudioWaveBar(heightFactor: 0.1, color: Colors.orange),
        AudioWaveBar(heightFactor: 1, color: Colors.lightBlueAccent),
        AudioWaveBar(heightFactor: 0.1, color: Colors.blue),
        AudioWaveBar(heightFactor: 0.2, color: Colors.black),
        AudioWaveBar(heightFactor: 0.3),
        AudioWaveBar(heightFactor: 0.4, color: Colors.orange),
        AudioWaveBar(heightFactor: 0.5, color: Colors.lightBlueAccent),
        AudioWaveBar(heightFactor: 0.6, color: Colors.blue),
        AudioWaveBar(heightFactor: 0.7, color: Colors.black),
        AudioWaveBar(heightFactor: 0.8),
        AudioWaveBar(heightFactor: 0.9, color: Colors.orange),
      ],
    ),
  ],
),

audio_wave's People

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Watchers

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Forkers

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audio_wave's Issues

Operand of null-aware operation '?.' has type 'WidgetsBinding' which excludes null

Hi there,

After upgrading to flutter 3.0.0 I've experienced the following error.

/opt/homebrew/Caskroom/flutter/3.0.0/flutter/.pub-cache/hosted/pub.dartlang.org/audio_wave-0.1.3/lib/audio_wave.dart:84:22: Warning: Operand of null-aware operation '?.' has type 'WidgetsBinding' which excludes null.
 - 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('/opt/homebrew/Caskroom/flutter/3.0.0/flutter/packages/flutter/lib/src/widgets/binding.dart').
      WidgetsBinding.instance?.addPostFrameCallback((x) {

It think this error says enough. An update would be great! Thanks in advance.

An issue from community.

I'm using the audio wave library. Very nice. Thanks.

Here is what I found. When I pop the view the time is still running which is causing setState to be called. The debugger is indicating that a memory leak is likely occurring.

The fix that I did was to add a local bool variable cancelTimer; a dispose() function. In the dispose function I set the cancelTimer = true. In the setState I check the cancelTimer and cancel the timer if needed.

This cleared up the issue.

bool cancelTimer = false;

@OverRide
void dispose() {
cancelTimer = true;
super.dispose();

print('Audio wave Dispose called.');
}

if (mounted) {
setState(() {
if(cancelTimer) {
timer.cancel();
}
});
}

Build Failed After upgrading v -0.1.2 to v 0.1.4

There is a warning after upgrading the build failed.

Warning: unexpected element (uri:"", local:"base-extension"). Expected elements are <{}codename>,<{}layoutlib>,<{}api-level>
/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/audio_wave-0.1.4/lib/audio_wave.dart:84:31: Error: Method 'addPostFrameCallback' cannot be called on 'WidgetsBinding?' because it is potentially null.
 - 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('/C:/src/flutter/packages/flutter/lib/src/widgets/binding.dart').
Try calling using ?. instead.
      WidgetsBinding.instance.addPostFrameCallback((x) {
                              ^^^^^^^^^^^^^^^^^^^^


FAILURE: Build failed with an exception.

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