Android Question How to set MediaPlayer Play Speed?

mywmshow · Mar 8, 2020

Excuse me, I use Google Translate for this issue.
I want to set MediaPlayer Play Speed. What should I do?
I searched this code online but it didn't work. Hope to get everyone's help, thank you very much!

MediaPlayer Play Speed:

Process_Globals
    Dim MP As MediaPlayer
End Sub


Sub Activity_Create(FirstTime As Boolean)
    MP.Initialize2("MP")
End Sub

Sub BtnTest_Click
    Dim jo As JavaObject
    jo.InitializeContext
    jo.RunMethod("setPlaySpeed",Array(MP,0.5f))
End Sub

#if JAVA

import android.media.MediaPlayer;
import android.media.PlaybackParams;

public boolean setPlaySpeed(MediaPlayer tmp_mp,float speed) {
    try {
        PlaybackParams params = tmp_mp.getPlaybackParams();
        params.setSpeed(speed);
        tmp_mp.setPlaybackParams(params);
        return true;
    } catch (Exception e) {
        return false;
    }
}

#end if

stevel05 · Mar 8, 2020

You need to pass the native MediaPlayer object rather than the B4a Wrapped Mediaplayer Object

B4X:

Sub Activity_Create(FirstTime As Boolean)
    MP.Initialize2("MP")
    MP.Load(File.DirAssets,"BoogieWonderland.mid") 'whatever file you want to play

    Dim MPJO As JavaObject = MP
    MPJO = MPJO.GetField("mp") 'Get the native Mediaplayer object

    Dim jo As JavaObject
    jo.InitializeContext
    Dim Speed as Float = 0.5
    jo.RunMethod("setPlaySpeed",Array(MPJO,Speed))

    MP.Play
End Sub

This also works with JavaObject:

B4X:

Sub Activity_Create(FirstTime As Boolean)
    MP.Initialize2("MP")
    MP.Load(File.DirAssets,"BoogieWonderland.mid") 'whatever file you want to play


    Dim jo As JavaObject = MP
    jo = jo.GetField("mp") 'Get the native Mediaplayer object

    Dim PP As JavaObject = jo.RunMethod("getPlaybackParams",Null)
    Dim Speed as Float = 0.5
    PP.RunMethod("setSpeed",Array(Speed))
    jo.RunMethod("setPlaybackParams",Array(PP))

    MP.Play
End Sub

Erel · Mar 8, 2020

BTW, there is no such thing as 0.5f. If you need a float number then you must write it like this:

B4X:

Dim Speed As Float = 0.5
PP.RunMethod("setSpeed", Array(Speed))

mywmshow · Mar 9, 2020

Thank you very much, perfect solution!???

meysampro · Nov 20, 2021

hi,
how I can use the speed rate for mp4 video
thanks

stevel05 · Nov 20, 2021

meysampro said:
hi,
how I can use the speed rate for mp4 video
thanks

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Android Question How to set MediaPlayer Play Speed?

mywmshow

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