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Nothing showed on my android s screen when I built my app in Kotlin. Can someone please help me and tell me why?
原标题:

I m not exactly sure why this is happening but I have an idea. I m not sure what to do about it though. I ve searched the internet but haven t gotten an exact answer. Here is an error that might help. (don t question the file names)

Access denied finding property "ro.vendor.pref_scale_resolution"

I tried searching the internet, looking at my catlog, etc. But I haven t found anything.

Nothing is showing on the screen of the app I built. Here is the code.

MainActivity:

package com.example.myapplication

import android.app.Activity
import android.media.AudioAttributes
import android.media.MediaPlayer
import android.os.Bundle
import android.widget.Button


class MyActivity : Activity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        setContentView(R.layout.amogusfile)

        val button = findViewById<Button>(R.id.supabutton)
        button.setOnClickListener {
            mediaPlayer
        }
    }
}

const val url = "https://www.youtube.com/watch?v=4KfC923EFsY" // your URL here
val mediaPlayer = MediaPlayer().apply {
    setAudioAttributes(
        AudioAttributes.Builder()
            .setContentType(AudioAttributes.CONTENT_TYPE_MUSIC)
            .setUsage(AudioAttributes.USAGE_MEDIA)
            .build()
    )
    setDataSource(url)
    prepare() // might take long! (for buffering, etc)
    start()
}

amogusfile.xml:

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingLeft="16dp"
    android:paddingRight="16dp"
    android:orientation="vertical"
    tools:ignore="ExtraText">

    <Button
        android:id="@+id/supabutton"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="@string/amogus"
        tools:ignore="VisualLintButtonSize" />
    
</LinearLayout>

If any more info is needed I will provide it.

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