AmplitudeGraphView-Android

A simple Graph view library to plot audio signals amplitudes in real time Can also be used to plot any values over a time

DEMO

Steps

1.Add graphview library folder as library to you project

2.Add view to your layout

<suman.brose.graphviewlibrary.GraphView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/graphView"
        android:fillViewport="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_alignParentBottom="true"></suman.brose.graphviewlibrary.GraphView>

3.Set max amplitude and WaveSample list to graphview

graphView.setMaxAmplitude(100);
private List<WaveSample> pointList = new ArrayList<>();
graphView.setMasterList(pointList);
graphView.startPlotting();

3.start plotting

graphView.startPlotting();
....
....
/*add samples to the list during runtime
pointList.add(new WaveSample(timeStampInMillisecond, amplitude));
....
....
graphView.stopPlotting();

Documentation

`public class GraphView extends HorizontalScrollView`

Created by Anand on 25-03-2016. Graph view extends Horizontal scrollview containing a surface view. This view can be used for plotting values over time both in real time and post processed values The graph is plotted using a list containing {@link WaveSample} values

`public void stopPlotting()`

Stop plotting the wave graph

`public void startPlotting()`

Start plotting the wave graph

`public void setCanvasColor(int canvasColor)`

Set plain background canvas color

Parameters: canvasColor — default is Color.rgb(101, 76, 104)

`public void setMarkerColor(int markerColor)`

Set marker background color

Parameters: markerColor — default is Color.argb(160, 30, 30, 30)

`public void setGraphColor(int graphColor)`

Set color for waves

Parameters: graphColor — default is Color.rgb(255, 255, 255)

`public void setTimeColor(int timeColor)`

Set text color for time markers

Parameters: timeColor — default is Color.rgb(250, 250, 250)

`public void setNeedleColor(int needleColor)`

Set color for needle that displays current amplitude

Parameters: needleColor — default is Color.rgb(250, 0, 0)

`public int getMaxAmplitude()`

Get maximum value in y axis

`public void setMaxAmplitude(int maxAmplitude)`

Set maximum value in y axis

Parameters: maxAmplitude — default is 35000

`public int getTimeScale()`

Get time scale for time markers y axis

`public void setTimeScale(int timeScale)`

Set time scale in milliseconds for time markers in y axis

Parameters: timeScale — - default time is marked every 5 sec

`public double getGraphXOffset()`

Get starting point from where plot starts for realtime plotting

`public void setGraphXOffset(double graphXOffset)`

Set starting point from where plot starts for realtime plotting

Parameters: graphXOffset — - default is 0.75

`public boolean isPaused()`

Returns state of plotting, use {@link #resume()} and {@link #pause()} for resume/pause

Returns: true if paused

`public void pause()`

Pause the wave graph plotting, use {@link #resume()} for resume

`public void resume()`

Resume the wave graph plotting, use {@link #pause()} for pause

`public void showFullGraph(List<WaveSample> waveSamples)`

Show full graph of recorded wave, stopPlotting should be called if plotting in progress

Parameters: waveSamples — {@link WaveSample} list

`public void setMasterList(List<WaveSample> list)`

Assign list that holds samples

Parameters: list —

`public void reset()`

reset the graph before each start plotting and show full graph

`public void setWaveLengthPX(int scale)`

Set wave length in px

Parameters: scale — can be any value from 2 to 15

prajwalmw / amplitudegraphview-android-master Goto Github PK