如何创建淡出按钮

Question

I want to make a button onclick to fade out the music and call the media player to stop?

I want this to be over 5 sec

I have tried to make a timer like code, but i dont get how to make it work - can you guys help me?

float volume = 1;
float speed = 0.05f;

    public void FadeOut(float deltaTime); 
{ 
mpMain.setVolume(1, 1); 
volume -= speed* deltaTime; } 
public void FadeIn(float deltaTime1); 
{ 
mpMain.setVolume(0, 0); 
volume += speed* deltaTime1; } 


}}

Answer 1

The difference between

Android: How to create fade-in/fade-out sound effects for any music file that my app plays?

and the code that you posted, is that you set the volume directly to 1, and ignore the volume variable that you're changing. Instead use the volume variable exactly as they do in the solution to the other question. This also needs to be called several times via a timer.

deltatime should be the amount of time that passed since the last time the method was called. This is to keep the fade consistent if the phone lags or something.