package com.shivamkapila.echo.fragments
import android.app.Activity
import android.content.Context
import android.hardware.Sensor
import android.hardware.SensorEvent
import android.hardware.SensorEventListener
import android.hardware.SensorManager
import android.media.AudioManager
import android.media.MediaPlayer
import android.net.Uri
import android.os.Bundle
import android.os.Handler
import android.support.v4.app.Fragment
import android.support.v4.content.ContextCompat
import android.util.Log
import android.view.*
import android.widget.ImageButton
import android.widget.SeekBar
import android.widget.TextView
import android.widget.Toast
import com.cleveroad.audiovisualization.AudioVisualization
import com.cleveroad.audiovisualization.DbmHandler
import com.cleveroad.audiovisualization.GLAudioVisualizationView
import com.shivamkapila.echo.CurrentSongHelper
import com.shivamkapila.echo.R
import com.shivamkapila.echo.Songs
import com.shivamkapila.echo.activities.MainActivity
import com.shivamkapila.echo.databases.EchoDatabase
import com.shivamkapila.echo.utils.SeekBarController
import java.util.*
import java.util.concurrent.TimeUnit
class SongPlayingFragment : Fragment() {
object Statified {
var myActivity: Activity? = null
var mediaPlayer: MediaPlayer? = null
var startTimeNext: TextView? = null
var endTimeNext: TextView? = null
var playPauseImageButton: ImageButton? = null
var previousImageButton: ImageButton? = null
var nextImageButton: ImageButton? = null
var loopImageButton: ImageButton? = null
var seekbar: SeekBar? = null
var songArtistView: TextView? = null
var songTitleView: TextView? = null
var shuffleImageButton: ImageButton? = null
var check: Boolean = true
var _currentPosition: Int = 0
var fetchSongs: ArrayList<Songs>? = null
var currentSongHelper: CurrentSongHelper? = null
var audioVisualization: AudioVisualization? = null
var glView: GLAudioVisualizationView? = null
var fab: ImageButton? = null
var favoriteContent: EchoDatabase? = null
var counter: Int = 0
var mSensorManager: SensorManager? = null
var mSensorListener: SensorEventListener? = null
var MY_PREFS_NAME = "ShakeFeature"
var back: String? = null
var updateSongTime = object : Runnable {
override fun run() {
try {
val getCurrent = Statified.mediaPlayer?.getCurrentPosition()
startTimeNext?.setText(String.format("%02d:%02d",
TimeUnit.MILLISECONDS.toMinutes(getCurrent?.toLong() as Long),
TimeUnit.MILLISECONDS.toSeconds(getCurrent?.toLong() as Long) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(getCurrent?.toLong() as Long))))
seekbar?.setProgress(getCurrent?.toInt() as Int)
Statified.check = true
Handler().postDelayed(this, 1000)
} catch (e: Exception) {
e.printStackTrace()
}
}
}
}
object Staticated {
var MY_PREFS_SHUFFLE = "Shuffle feature"
var MY_PREFS_LOOP = "Loop feature"
fun onSongComplete() {
if (Statified.currentSongHelper?.isShuffle as Boolean) {
playNext("PlayNextLikeNormalShuffle")
Statified.currentSongHelper?.isPlaying = true
} else {
if (Statified.currentSongHelper?.isLoop as Boolean) {
Statified.currentSongHelper?.isPlaying = true
var nextSong = Statified.fetchSongs?.get(Statified._currentPosition)
Statified.currentSongHelper?.songPath = nextSong?.songData
Statified.currentSongHelper?.songTitle = nextSong?.songTitle
Statified.currentSongHelper?.songArtist = nextSong?.artist
Statified.currentSongHelper?.songId = nextSong?.songID as Long
Statified.currentSongHelper?.currentPosition = Statified._currentPosition
updateTextViews(Statified.currentSongHelper?.songTitle as String, Statified.currentSongHelper?.songArtist as String)
Statified.mediaPlayer?.reset()
try {
Statified.mediaPlayer?.setDataSource(Statified.myActivity, Uri.parse(Statified.currentSongHelper?.songPath) as Uri)
Statified.mediaPlayer?.prepare()
Statified.mediaPlayer?.start()
processInformation(Statified.mediaPlayer as MediaPlayer)
} catch (e: Exception) {
e.printStackTrace()
}
} else {
playNext("PlayNextNormal")
Statified.currentSongHelper?.isPlaying = true
}
}
if (Statified.favoriteContent?.checkifIdExists(Statified.currentSongHelper?.songId?.toInt() as Int) as Boolean) {
Statified.fab?.setImageDrawable(ContextCompat.getDrawable(Statified.myActivity, R.drawable.favorite_on))
} else {
Statified.fab?.setImageDrawable(ContextCompat.getDrawable(Statified.myActivity, R.drawable.favorite_off))
}
}
fun updateTextViews(songTitle: String, songArtist: String) {
var songTitleUpdated = songTitle
var songArtistUpdated = songArtist
if (songTitle.equals("<unknown>", true)) {
songTitleUpdated = "unknown"
}
if (songArtist.equals("<unknown>", true)) {
songArtistUpdated = "unknown"
}
Statified.songTitleView?.setText(songTitleUpdated)
Statified.songArtistView?.setText(songArtistUpdated)
}
fun processInformation(mediaPlayer: MediaPlayer) {
val finalTime = mediaPlayer.duration
val startTime = mediaPlayer.currentPosition
Statified.seekbar?.max = finalTime
Statified.startTimeNext?.setText(String.format("%02d:%02d",
TimeUnit.MILLISECONDS.toMinutes(startTime.toLong()),
TimeUnit.MILLISECONDS.toSeconds(startTime.toLong()) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(startTime.toLong()))))
Statified.endTimeNext?.setText(String.format("%02d:%02d",
TimeUnit.MILLISECONDS.toMinutes(finalTime.toLong()),
TimeUnit.MILLISECONDS.toSeconds(finalTime.toLong()) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(finalTime.toLong()))))
Statified.seekbar?.setProgress(startTime)
Handler().postDelayed(Statified.updateSongTime, 1000)
}
fun playNext(check: String) {
if (check.equals("PlayNextNormal", true)) {
Statified._currentPosition = Statified._currentPosition + 1
} else if (check.equals("PlayNextLikeNormalShuffle", true)) {
var randomObject = Random()
var randomPosition = randomObject.nextInt(Statified.fetchSongs?.size?.plus(1) as Int)
Statified._currentPosition = randomPosition
}
if (Statified._currentPosition == Statified.fetchSongs?.size) {
Statified._currentPosition = 0
}
Statified.currentSongHelper?.isLoop = false
var nextSong = Statified.fetchSongs?.get(Statified._currentPosition)
Statified.currentSongHelper?.songPath = nextSong?.songData
Statified.currentSongHelper?.songTitle = nextSong?.songTitle
Statified.currentSongHelper?.songArtist = nextSong?.artist
Statified.currentSongHelper?.songId = nextSong?.songID as Long
Statified.currentSongHelper?.currentPosition = Statified._currentPosition
var editorLoop = Statified.myActivity?.getSharedPreferences(Staticated.MY_PREFS_LOOP, Context.MODE_PRIVATE)?.edit()
Statified.currentSongHelper?.isLoop = false
Statified.loopImageButton?.setBackgroundResource(R.drawable.loop_white_icon)
editorLoop?.putBoolean("feature", false)
editorLoop?.apply()
if (Statified.currentSongHelper?.isPlaying as Boolean) {
Statified.playPauseImageButton?.setBackgroundResource(R.drawable.pause_icon)
} else {
Statified.playPauseImageButton?.setBackgroundResource(R.drawable.play_icon)
}
updateTextViews(Statified.currentSongHelper?.songTitle as String, Statified.currentSongHelper?.songArtist as String)
Statified.mediaPlayer?.reset()
try {
Statified.mediaPlayer?.setDataSource(Statified.myActivity, Uri.parse(Statified.currentSongHelper?.songPath) as Uri)
Statified.mediaPlayer?.prepare()
Statified.mediaPlayer?.start()
Staticated.processInformation(Statified.mediaPlayer as MediaPlayer)
processInformation(Statified.mediaPlayer as MediaPlayer)
} catch (e: Exception) {
e.printStackTrace()
}
if (Statified.favoriteContent?.checkifIdExists(Statified.currentSongHelper?.songId?.toInt() as Int) as Boolean) {
Statified.fab?.setImageDrawable(ContextCompat.getDrawable(Statified.myActivity, R.drawable.favorite_on))
} else {
Statified.fab?.setImageDrawable(ContextCompat.getDrawable(Statified.myActivity, R.drawable.favorite_off))
}
}
fun playPrevious() {
Statified._currentPosition = Statified._currentPosition - 1
if (Statified._currentPosition == -1) {
Statified._currentPosition = 0
}
if (Statified.currentSongHelper?.isPlaying as Boolean) {
Statified.playPauseImageButton?.setBackgroundResource(R.drawable.pause_icon)
} else {
Statified.playPauseImageButton?.setBackgroundResource(R.drawable.play_icon)
}
Statified.currentSongHelper?.isLoop = false
var nextSong = Statified.fetchSongs?.get(Statified._currentPosition)
Statified.currentSongHelper?.songPath = nextSong?.songData
Statified.currentSongHelper?.songTitle = nextSong?.songTitle
Statified.currentSongHelper?.songArtist = nextSong?.artist
Statified.currentSongHelper?.songId = nextSong?.songID as Long
Statified.currentSongHelper?.currentPosition = Statified._currentPosition
Staticated.updateTextViews(Statified.currentSongHelper?.songTitle as String, Statified.currentSongHelper?.songArtist as String)
Statified.mediaPlayer?.reset()
try {
Statified.mediaPlayer?.setDataSource(Statified.myActivity, Uri.parse(Statified.currentSongHelper?.songPath) as Uri)
Statified.mediaPlayer?.prepare()
Statified.mediaPlayer?.start()
Staticated.processInformation(Statified.mediaPlayer as MediaPlayer)
processInformation(Statified.mediaPlayer as MediaPlayer)
} catch (e: Exception) {
e.printStackTrace()
}
if (Statified.favoriteContent?.checkifIdExists(Statified.currentSongHelper?.songId?.toInt() as Int) as Boolean) {
Statified.fab?.setImageDrawable(ContextCompat.getDrawable(Statified.myActivity, R.drawable.favorite_on))
} else {
Statified.fab?.setImageDrawable(ContextCompat.getDrawable(Statified.myActivity, R.drawable.favorite_off))
}
}
}
var mAcceleration: Float = 0f
var mAccelerationCurrent: Float = 0f
var mAccelerationLast: Float = 0f
override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?,
savedInstanceState: Bundle?): View? {
// Inflate the layout for this fragment
val view = inflater!!.inflate(R.layout.fragment_song_playing, container, false)
setHasOptionsMenu(true)
activity.title = "Now Playing"
Statified.seekbar = view?.findViewById(R.id.seekBar)
Statified.startTimeNext = view?.findViewById(R.id.startTime)
Statified.endTimeNext = view?.findViewById(R.id.endTime)
Statified.playPauseImageButton = view?.findViewById(R.id.playPauseButton)
Statified.nextImageButton = view?.findViewById(R.id.nextButton)
Statified.previousImageButton = view?.findViewById(R.id.previousButton)
Statified.loopImageButton = view?.findViewById(R.id.loopButton)
Statified.shuffleImageButton = view?.findViewById(R.id.shuffleButton)
Statified.songArtistView = view?.findViewById(R.id.songArtist)
Statified.songTitleView = view?.findViewById(R.id.songTitle)
Statified.glView = view?.findViewById(R.id.visualizer_view)
Statified.fab = view?.findViewById(R.id.favoriteIcon)
Statified.fab?.alpha = 0.8f
return view
}
override fun onViewCreated(view: View?, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
Statified.audioVisualization = Statified.glView as AudioVisualization
}
override fun onAttach(context: Context?) {
super.onAttach(context)
Statified.myActivity = context as Activity
}
override fun onAttach(activity: Activity?) {
super.onAttach(activity)
Statified.myActivity = activity
}
override fun onResume() {
super.onResume()
Statified.audioVisualization?.onResume()
Statified.mSensorManager?.registerListener(Statified.mSensorListener, Statified.mSensorManager?.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
SensorManager.SENSOR_DELAY_NORMAL)
}
override fun onPause() {
Statified.audioVisualization?.onPause()
Statified.mSensorManager?.unregisterListener(Statified.mSensorListener)
super.onPause()
}
override fun onDestroyView() {
super.onDestroyView()
Statified.audioVisualization?.release()
}
override fun onActivityCreated(savedInstanceState: Bundle?) {
super.onActivityCreated(savedInstanceState)
Statified.currentSongHelper = CurrentSongHelper()
Statified.currentSongHelper?.isPlaying = true
Statified.currentSongHelper?.isLoop = false
Statified.currentSongHelper?.isShuffle = false
Statified.favoriteContent = EchoDatabase(Statified.myActivity)
var path: String? = null
var _songTitle: String? = null
var _songArtist: String? = null
var songId: Long = 0
var fromFavBottomBar: String? = null
var fromMainScreenBottomBar: String? = null
try {
path = arguments.getString("path")
_songTitle = arguments.getString("songTitle")
_songArtist = arguments.getString("songArtist")
songId = arguments.getInt("songId").toLong()
Statified._currentPosition = arguments.getInt("songPosition")
Statified.fetchSongs = arguments.getParcelableArrayList("songData")
Statified.currentSongHelper?.songPath = path
Statified.currentSongHelper?.songTitle = _songTitle
Statified.currentSongHelper?.songArtist = _songArtist
Statified.currentSongHelper?.songId = songId
Statified.currentSongHelper?.currentPosition = Statified._currentPosition
fromFavBottomBar = arguments.get("FavBottomBar") as? String
fromMainScreenBottomBar = arguments.get("MainScreenBottomBar") as? String
Staticated.updateTextViews(Statified.currentSongHelper?.songTitle as String, Statified.currentSongHelper?.songArtist as String)
} catch (e: Exception) {
e.printStackTrace()
}
if (fromFavBottomBar != null) {
Statified.mediaPlayer = FavoriteFragment.Statified.mediaPlayer
Staticated.processInformation(Statified.mediaPlayer as MediaPlayer)
} else if (fromMainScreenBottomBar != null) {
Statified.mediaPlayer = MainScreenFragment.Statified.mediaPlayer
Staticated.processInformation(Statified.mediaPlayer as MediaPlayer)
} else {
Statified.mediaPlayer = MediaPlayer()
Statified.mediaPlayer?.setAudioStreamType(AudioManager.STREAM_MUSIC)
try {
Statified.mediaPlayer?.setDataSource(Statified.myActivity, Uri.parse(path) as Uri)
Statified.mediaPlayer?.prepare()
} catch (e: Exception) {
e.printStackTrace()
}
Statified.mediaPlayer?.start()
Staticated.processInformation(Statified.mediaPlayer as MediaPlayer)
}
Staticated.processInformation(Statified.mediaPlayer as MediaPlayer)
if (Statified.mediaPlayer?.isPlaying as Boolean) {
Statified.playPauseImageButton?.setBackgroundResource(R.drawable.pause_icon)
} else {
Statified.playPauseImageButton?.setBackgroundResource(R.drawable.play_icon)
}
Statified.mediaPlayer?.setOnCompletionListener {
Staticated.onSongComplete()
}
clickHandler()
var visualizationHandler = DbmHandler.Factory.newVisualizerHandler(Statified.myActivity as Context, 0)
Statified.audioVisualization?.linkTo(visualizationHandler)
var prefsForShuffle = Statified.myActivity?.getSharedPreferences(Staticated.MY_PREFS_SHUFFLE, Context.MODE_PRIVATE)
var isShuffleAllowed = prefsForShuffle?.getBoolean("feature", false)
if (isShuffleAllowed as Boolean) {
Statified.currentSongHelper?.isShuffle = true
Statified.currentSongHelper?.isLoop = false
Statified.shuffleImageButton?.setBackgroundResource(R.drawable.shuffle_icon)
Statified.loopImageButton?.setBackgroundResource(R.drawable.loop_white_icon)
} else {
Statified.currentSongHelper?.isShuffle = false
Statified.shuffleImageButton?.setBackgroundResource(R.drawable.shuffle_white_icon)
}
var prefsForLoop = Statified.myActivity?.getSharedPreferences(Staticated.MY_PREFS_LOOP, Context.MODE_PRIVATE)
var isLoopAllowed = prefsForLoop?.getBoolean("feature", false)
if (isLoopAllowed as Boolean) {
Statified.currentSongHelper?.isShuffle = false
Statified.currentSongHelper?.isLoop = true
Statified.shuffleImageButton?.setBackgroundResource(R.drawable.shuffle_white_icon)
Statified.loopImageButton?.setBackgroundResource(R.drawable.loop_icon)
} else {
Statified.currentSongHelper?.isLoop = false
Statified.loopImageButton?.setBackgroundResource(R.drawable.loop_white_icon)
}
if (Statified.favoriteContent?.checkifIdExists(Statified.currentSongHelper?.songId?.toInt() as Int) as Boolean) {
Statified.fab?.setImageDrawable(ContextCompat.getDrawable(Statified.myActivity, R.drawable.favorite_on))
} else {
Statified.fab?.setImageDrawable(ContextCompat.getDrawable(Statified.myActivity, R.drawable.favorite_off))
}
seekbarHandler()
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
Statified.mSensorManager = Statified.myActivity?.getSystemService(Context.SENSOR_SERVICE) as SensorManager
mAcceleration = 0.0f
mAccelerationCurrent = SensorManager.GRAVITY_EARTH
mAccelerationLast = SensorManager.GRAVITY_EARTH
bindShakeListener()
}
override fun onCreateOptionsMenu(menu: Menu?, inflater: MenuInflater?) {
menu?.clear()
inflater?.inflate(R.menu.song_playing_menu, menu)
super.onCreateOptionsMenu(menu, inflater)
}
override fun onPrepareOptionsMenu(menu: Menu?) {
super.onPrepareOptionsMenu(menu)
val item: MenuItem? = menu?.findItem(R.id.action_redirect)
item?.isVisible = true
val item2: MenuItem? = menu?.findItem(R.id.action_sort)
item2?.isVisible = false
}
override fun onOptionsItemSelected(item: MenuItem?): Boolean {
when (item?.itemId) {
R.id.action_redirect -> {
var pos = 0
if (Statified.back.equals("Favorite", true)) {
pos = 0
}
if (Statified.back.equals("MainScreen", true)) {
pos = 1
}
if (pos == 1) {
val mainScreenFragment = MainScreenFragment()
(context as MainActivity).supportFragmentManager
.beginTransaction()
.replace(R.id.details_fragment, mainScreenFragment)
.commit()
}
if (pos == 0) {
val favoriteFragment = FavoriteFragment()
(context as MainActivity).supportFragmentManager
.beginTransaction()
.replace(R.id.details_fragment, favoriteFragment)
.commit()
}
return false
}
}
return false
}
fun clickHandler() {
Statified.fab?.setOnClickListener({
if (Statified.favoriteContent?.checkifIdExists(Statified.currentSongHelper?.songId?.toInt() as Int) as Boolean) {
Statified.fab?.setImageDrawable(ContextCompat.getDrawable(Statified.myActivity, R.drawable.favorite_off))
Statified.favoriteContent?.deleteFavourite(Statified.currentSongHelper?.songId?.toInt() as Int)
Toast.makeText(Statified.myActivity, "Removed from favorites", Toast.LENGTH_SHORT).show()
} else {
Statified.fab?.setImageDrawable(ContextCompat.getDrawable(Statified.myActivity, R.drawable.favorite_on))
Statified.favoriteContent?.storeAsFavorite(Statified.currentSongHelper?.songId?.toInt(), Statified.currentSongHelper?.songArtist,
Statified.currentSongHelper?.songTitle, Statified.currentSongHelper?.songPath)
Toast.makeText(Statified.myActivity, "Added to Favorites", Toast.LENGTH_SHORT).show()
}
})
Statified.shuffleImageButton?.setOnClickListener({
var editorShuffle = Statified.myActivity?.getSharedPreferences(Staticated.MY_PREFS_SHUFFLE, Context.MODE_PRIVATE)?.edit()
var editorLoop = Statified.myActivity?.getSharedPreferences(Staticated.MY_PREFS_LOOP, Context.MODE_PRIVATE)?.edit()
if (Statified.currentSongHelper?.isShuffle as Boolean) {
Statified.currentSongHelper?.isShuffle = false
Statified.shuffleImageButton?.setBackgroundResource(R.drawable.shuffle_white_icon)
editorShuffle?.putBoolean("feature", false)
editorShuffle?.apply()
} else {
Statified.currentSongHelper?.isLoop = false
Statified.currentSongHelper?.isShuffle = true
Statified.loopImageButton?.setBackgroundResource(R.drawable.loop_white_icon)
Statified.shuffleImageButton?.setBackgroundResource(R.drawable.shuffle_icon)
editorShuffle?.putBoolean("feature", true)
editorShuffle?.apply()
editorLoop?.putBoolean("feature", false)
editorLoop?.apply()
}
})
Statified.nextImageButton?.setOnClickListener({
Statified.currentSongHelper?.isPlaying = true
if (Statified.currentSongHelper?.isLoop as Boolean) {
Statified.loopImageButton?.setBackgroundResource(R.drawable.loop_white_icon)
}
if (Statified.currentSongHelper?.isShuffle as Boolean) {
Staticated.playNext("PlayNextLikeNormalShuffle")
} else {
Staticated.playNext("PlayNextNormal")
}
})
Statified.previousImageButton?.setOnClickListener({
Statified.currentSongHelper?.isPlaying = true
if (Statified.currentSongHelper?.isLoop as Boolean) {
Statified.loopImageButton?.setBackgroundResource(R.drawable.loop_white_icon)
}
Staticated.playPrevious()
})
Statified.loopImageButton?.setOnClickListener({
var editorShuffle = Statified.myActivity?.getSharedPreferences(Staticated.MY_PREFS_SHUFFLE, Context.MODE_PRIVATE)?.edit()
var editorLoop = Statified.myActivity?.getSharedPreferences(Staticated.MY_PREFS_LOOP, Context.MODE_PRIVATE)?.edit()
if (Statified.currentSongHelper?.isLoop as Boolean) {
Statified.currentSongHelper?.isLoop = false
Statified.loopImageButton?.setBackgroundResource(R.drawable.loop_white_icon)
editorLoop?.putBoolean("feature", false)
editorLoop?.apply()
} else {
Statified.currentSongHelper?.isLoop = true
Statified.currentSongHelper?.isShuffle = false
Statified.loopImageButton?.setBackgroundResource(R.drawable.loop_icon)
Statified.shuffleImageButton?.setBackgroundResource(R.drawable.shuffle_white_icon)
editorLoop?.putBoolean("feature", true)
editorLoop?.apply()
editorShuffle?.putBoolean("feature", false)
editorShuffle?.apply()
}
})
Statified.playPauseImageButton?.setOnClickListener({
if (Statified.mediaPlayer?.isPlaying as Boolean) {
Statified.mediaPlayer?.pause()
Statified.currentSongHelper?.isPlaying = false
Statified.playPauseImageButton?.setBackgroundResource(R.drawable.play_icon)
} else {
Statified.mediaPlayer?.start()
Statified.currentSongHelper?.isPlaying = true
Statified.playPauseImageButton?.setBackgroundResource(R.drawable.pause_icon)
Staticated.processInformation(Statified.mediaPlayer as MediaPlayer)
}
})
}
fun bindShakeListener() {
Statified.mSensorListener = object : SensorEventListener {
override fun onAccuracyChanged(p0: Sensor?, p1: Int) {
}
override fun onSensorChanged(p0: SensorEvent) {
val x = p0.values[0]
val y = p0.values[1]
val z = p0.values[2]
mAccelerationLast = mAccelerationCurrent
mAccelerationCurrent = Math.sqrt(((x * x + y * y + z * z).toDouble())).toFloat()
val delta = mAccelerationCurrent - mAccelerationLast
mAcceleration = mAcceleration * 0.9f + delta
if (mAcceleration > 12) {
println("11111")
val prefs = Statified.myActivity?.getSharedPreferences(Statified.MY_PREFS_NAME, Context.MODE_PRIVATE)
val isAllowed = prefs?.getBoolean("feature", false)
if (isAllowed as Boolean && Statified.check == true) {
Statified.currentSongHelper?.isPlaying = true
if (Statified.currentSongHelper?.isLoop as Boolean) {
Statified.loopImageButton?.setBackgroundResource(R.drawable.loop_white_icon)
}
if (Statified.currentSongHelper?.isShuffle as Boolean) {
Staticated.playNext("PlayNextLikeNormalShuffle")
} else {
Staticated.playNext("PlayNextNormal")
}
Statified.check = false
}
}
}
}
}
fun seekbarHandler() {
val seekbarListener = SeekBarController()
Statified.seekbar?.setOnSeekBarChangeListener(seekbarListener)
}
答案 0 :(得分：1)
让我们尝试一下，
这是Java代码，只要您可以将其转换为kotlin，就可以正常工作。
在您的活动中
声明静态变量
public static boolean IS_MUSIC_SCREEN = false;
实施此方法
@Override
public void onBackPressed() {
if (IS_MUSIC_SCREEN) {
IS_MUSIC_SCREEN=false;
startActivity(new Activity(this,MainActivity.class));
}else{
super.onBackPressed();
}
}
在您的片段中，
在onCreateView中设置的IS_MUSIC_SCREEN为真
喜欢这个，
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_song_playing, container, false);
MainActivity.IS_MUSIC_SCREEN =true;
return view;
}
答案 1 :(得分：0)
一种简单的方法是使用BackHandler初始化Fragment机制。我的BaseFragment类中有这样一种方法，如果后向动作是由片段而不是活动来处理的，则它将布尔返回true。为此，您可以使用自定义LifecycleAdapter：
interface LifecycleAdapter {
fun onBackPressed() : Boolean = false
// add other methods like onActivityResult or similar
// if needed that is to be delegated to the fragment
}
现在在BaseActivity中，您将拥有2个函数，一个用于添加Fragment，一个寄存器函数，用于MutableList<WeakReference<LifecycleAdapter>>
open class BaseActivity : AppCompatActivity() { // which ever type
protected open val lifecycleReferrals : MutableList<WeakReference<LifecycleAdapter>> = mutableListOf()
fun addFragment(fragment: BaseFragment,
@IdRes containerId: Int = R.id.fragment_container,
replace: Boolean = true,
addToBackstack: Boolean = false) {
supportFragmentManager?.beginTransaction()?.run {
if (addToBackstack){
addToBackStack(fragment.javaClass.simpleName)
}
if (replace) {
replace(containerId, fragment) // add tag when needed
} else {
add(containerId, fragment)
}
registerLifecycleReferrals(fragment)
commit()
}
}
fun registerLifecycleReferrals(adapter: LifecycleAdapter){
lifecycleReferrals.add(WeakReference(adapter))
}
override fun onBackPressed() {
if (lifecycleReferrals.none { it.get()?.onBackPressed(0) == true }) {
super.onBackPressed()
}
}
}
如果您需要访问onBackPressed()之类的控制器方法的任何类，则可以在所需的类中实现接口并从registerLifecycleReferrals(obj)调用activity。
现在您的基本片段类将是：
open class BaseFragment : Fragment(), LifecycleAdapter{
// have parent level constructs and implementation
// that would serve you well across the entire project
}
您当前的片段可以是：
class SongPlayingFragment : BaseFragment() {
// do all fragment inits and override methods
override fun onBackPressed(): Boolean {
if (Statified.currentSongHelper?.isPlaying == true) {
// handle the call and switch to MainScreenActivity
context?.apply {
startActivity<MainScreenActivity>() // anko extension
return true
}
}
return super.onBackPressed()
}
}
注意：在BaseActivity类中对适配器的引用很弱，因为如果Fragment进行销毁过程，则GC可以轻松释放适配器，并且列表不会保留对其的引用。