android简单音乐播放器

package com.example.myapplication1

import android.media.MediaPlayer
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Button

class MainActivity : AppCompatActivity() { private val mediaPlayer = MediaPlayer() // val buttonm: Button = (Button)findViewById(R.id.button1) override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.firstlayout) val button1: Button = findViewById(R.id.button1) val button2: Button = findViewById(R.id.button2) val button3: Button = findViewById(R.id.button3) val button4: Button = findViewById(R.id.button4) InitMediaPlayer() button1.setOnClickListener { if(!mediaPlayer.isPlaying) { mediaPlayer.start() } } button2.setOnClickListener { if(mediaPlayer.isPlaying) { mediaPlayer.pause() } } button3.setOnClickListener { if(mediaPlayer.isPlaying) { mediaPlayer.reset() InitMediaPlayer() } } } private fun InitMediaPlayer() { val assetManger  =assets val fd = assetManger.openFd("music.mp3") mediaPlayer.setDataSource(fd.fileDescriptor , fd.startOffset , fd.length) mediaPlayer.prepare() } override fun onDestroy() { super.onDestroy() mediaPlayer.stop() mediaPlayer.release() }

}

  

 

  
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文章来源: blog.csdn.net，作者：IM-STONE，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/doubleintfloat/article/details/119124068