安卓:MediaPlayer setVolume 函数 [英] Android: MediaPlayer setVolume function

问题描述

关于参数设置什么使播放器无声和全声

about the params Set what to make the player no sound and full sound

谢谢

推荐答案

这个功能真的很棒.多亏了它，您可以创建包含任意步数的音量标尺！

This function is actualy wonderful. Thanks to it you can create a volume scale with any number of steps!

假设您需要 50 个步骤:

Let's assume you want 50 steps:

int maxVolume = 50;

然后将 setVolume 设置为此范围 (0-49) 中的任何值，您可以这样做:

Then to set setVolume to any value in this range (0-49) you do this:

float log1=(float)(Math.log(maxVolume-currVolume)/Math.log(maxVolume));
yourMediaPlayer.setVolume(log1,log1); //set volume takes two paramater

又好又容易！并且不要使用 AudioManager 设置音量！它会导致许多副作用，例如禁用静音模式，这会让您的用户发疯！

Nice and easy! And DON'T use AudioManager to set volume! It will cause many side effects such as disabling silent mode, which will make your users mad!

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