我是Android Studio和Kotlin语言的新手。我制作了一个带有媒体播放器的音频应用。单击按钮时，我想打开媒体。当我第一次单击它时，它会播放，但是当我再次单击它时，它会关闭媒体并且不播放。我使用音频管理器在播放时关闭所有媒体。
这是MainActivity中的代码：
import android.annotation.SuppressLint
import android.media.AudioManager
import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import android.media.MediaPlayer
import android.os.Handler
import java.io.BufferedReader
import java.util.NoSuchElementException
import android.view.View
import kotlinx.android.synthetic.main.activity_main.*
import java.util.concurrent.TimeUnit
import android.support.v4.os.HandlerCompat.postDelayed
import android.support.v4.os.HandlerCompat.postDelayed
import android.support.v4.os.HandlerCompat.postDelayed
import android.support.v4.os.HandlerCompat.postDelayed
import android.util.Log
import kotlin.concurrent.timer
var x =0
var y=0
@Suppress("UNREACHABLE_CODE")
class MainActivity : AppCompatActivity() {
@SuppressLint("PrivateResource")
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val mediafatihah = MediaPlayer.create(applicationContext, R.raw.fatihah)
val mediaalbaqarah = MediaPlayer.create(applicationContext,
R.raw.albaqarah)
val mediaimran =MediaPlayer.create(applicationContext,R.raw.imran)
val medianisa =MediaPlayer.create(applicationContext, R.raw.nisa)
val mediamidiah =MediaPlayer.create(applicationContext,R.raw.maidah)
val mediaanam =MediaPlayer.create(applicationContext, R.raw.aniam)
val mediaaraf =MediaPlayer.create(applicationContext,R.raw.araf)
val mediaanfal =MediaPlayer.create(applicationContext, R.raw.anfal)
val mediaattaubah =MediaPlayer.create(applicationContext, R.raw.attaubah)
val mediayunus =MediaPlayer.create(applicationContext, R.raw.yunus)
val medianooh = MediaPlayer.create(applicationContext, R.raw.nooh)
val mediaalqasas =MediaPlayer.create(applicationContext, R.raw.alqasas)
fun audiomanager(){
try {
if (mediaalbaqarah.isPlaying){
mediaalbaqarah.stop()
return
}
if (mediafatihah.isPlaying){
mediafatihah.stop()
return
}
if (medianooh.isPlaying){
medianooh.stop()
return
}
if (mediaimran.isPlaying){
mediaimran.stop()
return
}
if (medianisa.isPlaying){
medianisa.stop()
}
if (mediamidiah.isPlaying){
mediamidiah.stop()
}
if (mediaanam.isPlaying){
mediaanam.stop()
}
if (mediaaraf.isPlaying){
mediaaraf.stop()
}
if (mediaanfal.isPlaying){
mediaanfal.stop()
}
if (mediayunus.isPlaying){
mediayunus.stop()
}
if (mediaattaubah.isPlaying){
mediaattaubah.stop()
}
}catch (ex:Exception){ }
}
seekBar.isClickable = false
fatihahid.setOnClickListener {
try {
audiomanager()
}catch (ex:Exception){
}
mediafatihah.start()
mediafatihah.isLooping = false
player.setImageResource(R.drawable.ic_puase)
x = 0
}
albaqarah.setOnClickListener {
try {
audiomanager()
}catch (ex:Exception){
mediaalbaqarah.start()
}
mediaalbaqarah.isLooping = false
mediaalbaqarah.start()
x = 0
player.setImageResource(R.drawable.ic_puase)
return@setOnClickListener
}
imranid.setOnClickListener{
audiomanager()
mediaimran.isLooping =false
mediaimran.start()
player.setImageResource(R.drawable.ic_puase)
x=0
}
anamid.setOnClickListener{
audiomanager()
mediaanam.isLooping =false
mediaanam.start()
player.setImageResource(R.drawable.ic_puase)
x=0
}
maidah.setOnClickListener{
audiomanager()
mediamidiah.isLooping =false
mediamidiah.start()
player.setImageResource(R.drawable.ic_puase)
x=0
}
nisaid.setOnClickListener {
audiomanager()
medianisa.isLooping =false
medianisa.start()
player.setImageResource(R.drawable.ic_puase)
x=0
}
arafid.setOnClickListener {
audiomanager()
mediaaraf.isLooping =false
mediaaraf.start()
player.setImageResource(R.drawable.ic_puase)
x=0
}
anfalid.setOnClickListener {
audiomanager()
mediaanfal.isLooping =false
mediaanfal.start()
player.setImageResource(R.drawable.ic_puase)
x=0
}
taubahid.setOnClickListener {
audiomanager()
mediaattaubah.isLooping =false
mediaattaubah.start()
player.setImageResource(R.drawable.ic_puase)
x=0
}
yunusid.setOnClickListener {
audiomanager()
mediayunus.isLooping =false
mediayunus.start()
player.setImageResource(R.drawable.ic_puase)
x=0
}
noohid.setOnClickListener {
audiomanager()
medianooh.isLooping = false
medianooh.start()
x = 0
player.setImageResource(R.drawable.ic_puase)
return@setOnClickListener
}
player.setOnClickListener {
if (mediafatihah.isPlaying) {
player.setImageResource(R.drawable.ic_player)
mediafatihah.pause()
x = 2
} else if (x == 2) {
mediafatihah.start()
player.setImageResource(R.drawable.ic_puase)
}
if (mediaalbaqarah.isPlaying) {
mediaalbaqarah.pause()
player.setImageResource(R.drawable.ic_player)
x = 1
} else if (x == 1) {
player.setImageResource(R.drawable.ic_puase)
mediaalbaqarah.start()
}
if (mediaimran.isPlaying) {
mediaimran.pause()
player.setImageResource(R.drawable.ic_player)
x = 3
} else if (x == 3) {
player.setImageResource(R.drawable.ic_puase)
mediaimran.start()
}
if (medianisa.isPlaying) {
medianisa.pause()
player.setImageResource(R.drawable.ic_player)
x = 4
} else if (x == 4) {
player.setImageResource(R.drawable.ic_puase)
medianisa.start()
}
if (mediamidiah.isPlaying) {
mediamidiah.pause()
player.setImageResource(R.drawable.ic_player)
x = 5
} else if (x == 5) {
player.setImageResource(R.drawable.ic_puase)
mediamidiah.start()
}
if (mediaanam.isPlaying) {
mediaanam.pause()
player.setImageResource(R.drawable.ic_player)
x = 6
} else if (x == 6) {
player.setImageResource(R.drawable.ic_puase)
mediaanam.start()
}
if (mediaaraf.isPlaying) {
mediaaraf.pause()
player.setImageResource(R.drawable.ic_player)
x = 7
} else if (x == 7) {
player.setImageResource(R.drawable.ic_puase)
mediaaraf.start()
}
if (mediaanfal.isPlaying) {
mediaanfal.pause()
player.setImageResource(R.drawable.ic_player)
x = 8
} else if (x == 8) {
player.setImageResource(R.drawable.ic_puase)
mediaanfal.start()
}
if (mediaattaubah.isPlaying) {
mediaattaubah.pause()
player.setImageResource(R.drawable.ic_player)
x = 9
} else if (x == 9) {
player.setImageResource(R.drawable.ic_puase)
mediaattaubah.start()
}
if (mediayunus.isPlaying) {
mediayunus.pause()
player.setImageResource(R.drawable.ic_player)
x = 10
} else if (x == 10) {
player.setImageResource(R.drawable.ic_puase)
mediayunus.start()
}
if (medianooh.isPlaying) {
player.setImageResource(R.drawable.ic_player)
medianooh.pause()
x = 71
} else if (x == 71) {
medianooh.start()
player.setImageResource(R.drawable.ic_puase)
}
}
}
}