RecyclerView + MediaPlayer + Toggle Button + String Uri

Question

背景:我正在开发一款健身应用.到目前为止一切都很好,但是当我MediaPlayer在android中使用音频文件时出现了问题.

我检查了资源,发现ListView但在RecyclerView + MediaPlayer上找不到任何内容.

我想知道如何在使用RecyclerView + Toggle Button + String Uri(离线 - 原始文件夹)时使其工作

问题:现在它正在播放每个点击事件的第一个.mp3文件(对于Eng:R.raw.sample_one_eng正在播放,对于印地语:R.raw.sample_one_hindi正在播放).我认为它没有考虑到国际地位.

后来,我想把它放在网上(可能是谷歌云),因为音频文件(.mp3)使我的应用程序非常沉重.关于这一点的任何想法也将受到赞赏(快速缓冲等).

ListExercises.java

public class ListExercises extends AppCompatActivity {

    List<ExerciseAudio> exerciseList = new ArrayList<>();
    RecyclerView.LayoutManager layoutManager;
    RecyclerView recyclerView;
    RecyclerViewAdapterAud adapter;
    PlayClickHandler clickHandler;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.list_exercises);

        initData();

        recyclerView = (RecyclerView) findViewById(R.id.list_ex);
        adapter = new RecyclerViewAdapterAud(exerciseList, getBaseContext());
        layoutManager = new LinearLayoutManager(this);
        recyclerView.setLayoutManager(layoutManager);
        recyclerView.setAdapter(adapter);
    }

    private void initData() {

        exerciseList.add(new ExerciseAudio(R.drawable.sample_one, "Sample Exercise One", "Sans One",
                R.raw.sample_one_eng,
                R.raw.sample_one_hindi));

        exerciseList.add(new ExerciseAudio(R.drawable.sample_two, "Sample Exercise Two", "Sans Two",
                R.raw.sample_two_eng,
                R.raw.sample_two_hindi));

        exerciseList.add(new ExerciseAudio(R.drawable.sample_three, "Sample Exercise Three", "Sans Three",
                R.raw.sample_three_eng,
                R.raw.sample_three_hindi));

        exerciseList.add(new ExerciseAudio(R.drawable.sample_four, "Sample Exercise Four", "Sans Four",
                R.raw.sample_four_eng,
                R.raw.sample_four_hindi));
    }
}

ViewExercise.java

public class ViewExercise extends AppCompatActivity {

    int image_id, eng_aud_url, hindi_aud_url;
    String name, sans_name;

    ArrayList<String> arrayList = new ArrayList<>();

    TextView timer, title, sansName;
    ImageView detail_image;
    ToggleButton tg_btn_speaker_eng, tg_btn_speaker_hindi;

    MediaPlayer mp;

    int position;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.view_exercise);

        Field[] field = R.raw.class.getFields();
        for (int i = 0; i < field.length; i++){
            arrayList.add(field[i].getName());
        }

        title = (TextView) findViewById(R.id.title);
        sansName = (TextView) findViewById(R.id.sans_name);
        detail_image = (ImageView) findViewById(R.id.detail_image);

        tg_btn_speaker_eng = (ToggleButton) findViewById(R.id.tg_btn_speaker_eng);
        tg_btn_speaker_hindi = (ToggleButton) findViewById(R.id.tg_btn_speaker_hindi);

        tg_btn_speaker_eng.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //toggleEnglish(tg_btn_speaker_eng.isChecked());
                int positionEng = 0;
                playSongEng(positionEng);
            }
        });

        tg_btn_speaker_hindi.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //toggleHindi(tg_btn_speaker_hindi.isChecked());
                int positionHindi = 0;
                playSongHindi(positionHindi);
            }
        });

        if (getIntent() != null) {
            image_id = getIntent().getIntExtra("image_id", -1);
            name = getIntent().getStringExtra("name");
            sans_name = getIntent().getStringExtra("sanskrit_name");

            detail_image.setImageResource(image_id);
            title.setText(name);
            sansName.setText(sans_name);
        }
    }


    public void playSongEng(int i) {
        //mp.reset();
        int resId = getResources().getIdentifier(arrayList.get(i), "raw", getPackageName());
        mp = MediaPlayer.create(getApplicationContext(), resId);
        mp.start();
    }

    public void playSongHindi(int i) {
        //mp.reset();
        int resId = getResources().getIdentifier(arrayList.get(i), "raw", getPackageName());
        mp = MediaPlayer.create(getApplicationContext(), resId);
        mp.start();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (mp != null)
            mp.release();
    }
}

这就是它的样子!

编辑(以避免混淆):刚刚注意到,该图像名称将是List Exercises而不是View Exercise,它对应于ListExercises.java

这一个对应 ViewExercise.java

谢谢!

Answer 1

您还可以在item_exercise_aud布局的父视图上设置点击侦听器onBindViewHolder，而不使用任何接口，在内部设置点击侦听器，如下所示：

holder.parentView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent(context, ViewExercise.class);
            intent.putExtra("image_id", exerciseList.get(position).getImage_id());
            intent.putExtra("name", exerciseList.get(position).getName());
            intent.putExtra("sanskrit_name", exerciseList.get(position).getSanskrit_name());
            intent.putExtra("eng_aud_url", exerciseList.get(position).getEng_aud_url());
            intent.putExtra("hindi_aud_url", exerciseList.get(position).getHindi_aud_url());
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            context.startActivity(intent);
        }
    });

或者你可以参考这里

编辑 - 要根据 recyclerview 列表的位置播放音频，我们必须将该特定练习的原始文件名发送到媒体播放器。

向ExerciseAudio模型类添加两个新变量：

private String file_name_eng;
private String file_name_hindi;

现在修改initData方法如下：

private void initData() {

    exerciseList.add(new ExerciseAudio(R.drawable.sample_one, "Sample Exercise One", "Sans One",
            R.raw.sample_one_eng, R.raw.sample_one_hindi,
            "sample_one_eng", "sample_one_hindi"));

    exerciseList.add(new ExerciseAudio(R.drawable.sample_two, "Sample Exercise Two", "Sans Two",
            R.raw.sample_two_eng, R.raw.sample_two_hindi,
            "sample_two_eng", "sample_one_hindi"));

    exerciseList.add(new ExerciseAudio(R.drawable.sample_three, "Sample Exercise Three", "Sans Three",
            R.raw.sample_three_eng, R.raw.sample_three_hindi,
            "sample_three_eng", "sample_three_hindi"));

    exerciseList.add(new ExerciseAudio(R.drawable.sample_four, "Sample Exercise Four", "Sans Four",
            R.raw.sample_four_eng, R.raw.sample_four_hindi,
            "sample_four_eng", "sample_four_hindi"));
}

现在将ViewExercise意图修改为：

intent.putExtra("file_name_eng", exerciseList.get(position).getFile_name_eng());
intent.putExtra("file_name_hindi", exerciseList.get(position).getFile_name_hindi());

在ViewExercise活动中获取字符串 extras并将其发送到mediaplayer：

file_name_eng = getIntent().getStringExtra("file_name_eng");
file_name_hindi = getIntent().getStringExtra("file_name_hindi");

For english:
    int resId = getResources().getIdentifier(file_name_eng, "raw", getPackageName());

For hindi:
    int resId = getResources().getIdentifier(file_name_hindi, "raw", getPackageName());