Is there a way to access the files of res/raw dynamically via MediaPlayer.create() instead of settin-CodePudding

I am trying to build a simple soundboard.

Following situation:

I already added the 'kotlin-android-extensions' to the build.gradle file
Filled the activity_main.xml with buttons
All buttons use the same method: fun playSound()
All buttons are tagged (I use the tag in order to access the files in raw via passed view.getTag())

The problem is that I can't find a way to access the res/raw-files "dynamically", because the MediaPlayer.create() requires a static path to the file (e.g. "R.raw.filename").

The code should look something like this but the .create does not accept a variable (the variable "path") but instead asks for the static path (e.g. "R.raw.filename").

fun playSound(view: View) {
        var path: String = "R.raw."   view.getTag()
        mediaPlayer = MediaPlayer.create(applicationContext, path)
        mediaPlayer.start()
}

I tried to solve the problem with the "resid" (the integer that is assigned to the files when they are put into the res/raw folder) but that did not work (the app always crashed). I searched a lot but the only solutions I found did not help me and I no longer know what to look for or whether the problem can be solved at all.

Thanks in advance!

CodePudding user response：

You can find the Resource Id by name from raw folder using the resources.getIdentifier() which can be used in MediaPlayer.create(applicationContext, resId) something like the below:

fun playSound(view: View) {
    val fileNameWithoutExtension: String = view.getTag() as String
    val resId = resources.getIdentifier(fileNameWithoutExtension, "raw", packageName)
    if (resId != 0) {
        val mediaPlayer = MediaPlayer.create(applicationContext, resId)
        mediaPlayer.start()
    }
}

Make sure that the filename you are passing using the view.getTag() doesn't contains the file extension.