Help to fix the Audio Music Player Errors!!

Quencyjones79

Quencyjones79

Lurker
May 11, 2020
1
0
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Hello good morning for everyone I´m a beginner on the Android Studio, and i need a help for you to place well the app, that means working perfectly. It´s a good app, and it could serve me as a example to understand its funcionality.

I´m building an audio music player app., but on my MainActivity.java file ,


In the code i faced with some mistakes, see below the images that i sent you. How could you fix them?


MainActivity.java


Java: 
package com.example.musicaudioplayer;


import androidx.annotation.NonNull;

import androidx.annotation.Nullable;

import androidx.appcompat.app.AppCompatActivity;

import androidx.core.app.ActivityCompat;

import androidx.core.content.ContextCompat;

import androidx.fragment.app.Fragment;

import androidx.fragment.app.FragmentManager;

import androidx.fragment.app.FragmentPagerAdapter;

import androidx.viewpager.widget.ViewPager;


import android.content.Context;

import android.content.pm.PackageManager;

import android.net.Uri;

import android.os.Bundle;

import android.provider.MediaStore;

import android.widget.Toast;


import com.google.android.material.tabs.TabLayout;


import java.util.ArrayList;

import java.util.jar.Manifest;


public class MainActivity extends AppCompatActivity {

    public static final int REQUEST_CODE=1;

    ArrayList<MusicFiles>musicFiles;

    [USER=1021285]@override[/USER]

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        permission();

        initViewpager();

    }


    private void permission() {

        if(ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.WRITE_EXTERNAL_STORAGE)

        != PackageManager.PERMISSION_GRANTED) {

            ActivityCompat.requestPermissions(MainActivity.this, new String[]{

                            Manifest.permission.WRITE_EXTERNAL_STORAGE}

                    , REQUEST_CODE);

        }

                else

        {

            Toast.makeText(this, "Permission Granted!", Toast.LENGTH_SHORT).show();

            musicFiles = getAllAudio(this);

        }

    }

    [USER=1021285]@override[/USER]

        public void onRequestPermissionsResult (int requestCode,@NonNull String[]permissions,

                                                @NonNull int[] grantResults){

        super.onRequestPermissionsResult(requestCode,permissions,grantResults);

        if (requestCode==REQUEST_CODE)

        {

            if(grantResults[0] == PackageManager.PERMISSION_GRANTED){

                {

                  //Do whatever you want permission related

                    Toast.makeText(this, "Permission Granted !", Toast.LENGTH_SHORT).show();

                    musicFiles =getAllAudio(this);


                }

                else

                {

                    ActivityCompat.requestPermissions(MainActivity.this, new String []{Manifest.permission.WRITE_EXTERNAL_STORAGE,

                            REQUEST_CODE);

                    }

                    }

            }


    private void initViewpager(){

        ViewPager viewPager =findViewById(R.id.viewpager);

        TabLayout tabLayout = findViewById(R.id.tab_layout);

        ViewpagerAdapter viewPagerAdapter = new ViewpagerAdapter(getSupportFragmentManager());

        viewPagerAdapter.addFragments(new SongsFragment(), "Songs");

        viewPagerAdapter.addFragments(new AlbumFragment(),"Album");

        viewPager.setAdapter(viewPagerAdapter);

        tabLayout.setupWithViewPager(viewPager);

    }

    public static class ViewpagerAdapter extends FragmentPagerAdapter{


        private ArrayList<Fragment> fragments;

        private ArrayList<String> titles;

        public ViewpagerAdapter (@NonNull FragmentManager fm){

            super(fm);

            this.fragments = new ArrayList<>();

            this.titles = new ArrayList<>();

        }

        void addFragments (Fragment fragment, String title){

            fragments.add(fragment);

            titles.add(title);


        }


        @NonNull

        [USER=1021285]@override[/USER]

        public Fragment getItem (int position){

            return fragments.get(position);

        }

        [USER=1021285]@override[/USER]

        public int getCount(){

            return fragments.size();

        }


        [USER=1996173]@nullable[/USER]

        [USER=1021285]@override[/USER]

        public CharSequence getPageTitle(int position){

            return titles.get(position);

        }

    }

}

    }

}

public static ArrayList <cMusicFiles> getAllAudio(Context context){

  ArrayList<MusicFiles> tempAudioList = new ArrayList<>();

    Uri uri= MediaStore.Audio.EXTERNAL_CONTENT_URI;

    String[] projection = (

            MediaStore.Audio.Media.ALBUM,

            MediaStore.Audio.Media.TITLE,

            MediaStore.Audio.Media.DURATION,

            MediaStore.Audio.Media.DATA, // FOR PATH

            MediaStore.Audio.Media.ARTIST,

};

        Cursor cursor = context.getContentResolver().query(uri, projection, null,null,null);

        if (cursor!=null)

                {

                while(cursor.moveToNext())

                {

                String album = cursor.getString(0);

                String title = cursor.getString(1);

                String duration = cursor.getString(2);

                String path = cursor.getString(3);

                String artist = cursor.getString(4);


                MusicFiles musicFiles = new MusicFiles(path, title,artist,album,duration);

                //take log.e for check

                Log.e("Path: " + path, "Album : " + album);

                tempAudioList.add(musicFiles)

                    }

                cursor.close();

                 }

        return tempAudioList;

                }

                }


unknown1.png


unknown2.png


AndroidManifest.xml

Code: 
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.musicaudioplayer">
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <application
        android:allowBackup="true"
        android:icon="[USER=22138]@Mipmap[/USER]/ic_launcher"
        android:label="[USER=696546]@String[/USER]/app_name"
        android:roundIcon="[USER=22138]@Mipmap[/USER]/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="[USER=19691]@Style[/USER]/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>


AlbumFragment.java

Java: 
package com.example.musicaudioplayer;

import android.os.Bundle;

import androidx.fragment.app.Fragment;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;


/**
* A simple {@link Fragment} subclass.
*/
public class AlbumFragment extends Fragment {

    public AlbumFragment() {
        // Required empty public constructor
    }


    [USER=1021285]@override[/USER]
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view = inflater.inflate(R.layout.fragment_album, container, false);
        return view;
    }
}

MusicFiles.java

Java: 
package com.example.musicaudioplayer;

public class MusicFiles {
    private String path;
    private String title;
    private String artist;
    private String album;
    private String duration;

    public MusicFiles(String path, String title, String artist, String album, String duration) {
        this.path = path;
        this.title = title;
        this.artist = artist;
        this.album = album;
        this.duration = duration;
    }

    public MusicFiles() {
    }

    public String getPath() {
        return path;
    }

    public void setPath(String path) {
        this.path = path;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getArtist() {
        return artist;
    }

    public void setArtist(String artist) {
        this.artist = artist;
    }

    public String getAlbum() {
        return album;
    }

    public void setAlbum(String album) {
        this.album = album;
    }

    public String getDuration() {
        return duration;
    }

    public void setDuration(String duration) {
        this.duration = duration;
    }
}


fragment_album.xml

Code: 
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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"
    tools:context=".AlbumFragment">

    <!-- TODO: Update blank fragment layout -->
    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="[USER=696546]@String[/USER]/hello_blank_fragment" />

</FrameLayout>

SongsFragment.java

Java: 
package com.example.musicaudioplayer;

import android.os.Bundle;

import androidx.fragment.app.Fragment;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;


/**
* A simple {@link Fragment} subclass.
*/
public class SongsFragment extends Fragment {

    public SongsFragment() {
        // Required empty public constructor
    }


    [USER=1021285]@override[/USER]
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view =inflater.inflate(R.layout.fragment_songs, container, false);
        return view;
    }
}

fragment_songs.xml


Code: 
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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"
    tools:context=".SongsFragment">

    <!-- TODO: Update blank fragment layout -->
    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="[USER=696546]@String[/USER]/hello_blank_fragment" />

</FrameLayout>


Ps.: I send also the ZIP file about the audio music player app, My Android version is below:

android_studio_version.png




Another trouble is the emulator that in my pc doesn´t work, i think it´s because my Pc doesn´t have the Intel processor but the AMD Processor. Could you help to fix this problem too? see the images

unknown3.png



unknown4.png



Could anyone, help me, please to fix this problems?

I expect your answer as soon as possible.

Best regards

José Moreira
 

Attachments

  • Musicaudioplayer.zip
    143.6 KB · Views: 106
Last edited by a moderator:
I moved your thread to the development area for better views. :) I also added code tags for readability. Good luck!! :)

Code Tag Usage:
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Code: 
Line 1
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Line 3
Maintains white space
Doesn't turn :) into emoji
etc...
 

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