如何迭代通过自定义ArrayList移动​​到下一个项目，当点击一个按钮

Question

我是新来的机器人，甚至编程它只有3周 我想通过显示图片和播放为我的德语课建立一个应用程序音频。 现在我的问题，我有一个列表视图，其中显示一个小的图片和一个字，然后我做了一个onItemClickListener这个列表视图，它显示项目形式和arraylist类型字（一个类的构造和获取方法对于图像资源和音频资源和单词它自己的字符串）

无论如何，我管理项目点击项目列表时，它打开弹出式布局，显示图像和播放按钮。

然后，我想添加next和prev按钮去下一个图像和音频，而不是关闭弹出窗口，再次点击想要的项目但没有运气。

我会尝试发布相关的最重要的代码

public class Lesson1Words extends AppCompatActivity { 


private MediaPlayer mMediaPlayer; 


private MediaPlayer.OnCompletionListener mCompletionListener = new MediaPlayer.OnCompletionListener() { 
    @Override 
    public void onCompletion(MediaPlayer mediaPlayer) { 
     // Now that the sound file has finished playing, release the media player resources. 
     releaseMediaPlayer(); 

    } 
}; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.word_list); 
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); 
    setSupportActionBar(toolbar); 

    final ArrayList<Word> lessone1Words = new ArrayList<>(); 

    lessone1Words.add(new Word("vernünftig", R.drawable.vernunftig, R.raw.l01_vernunftig)); 
    lessone1Words.add(new Word("großzügig", R.drawable.groszugig, R.raw.l01_grosszugig)); 
    lessone1Words.add(new Word("fair", R.drawable.fair, R.raw.l01_fair)); 
    lessone1Words.add(new Word("intelligent/klug", R.drawable.intelligent, R.raw.l01_intelligent)); 
    lessone1Words.add(new Word("frech", R.drawable.frech, R.raw.l01_frech)); 
    lessone1Words.add(new Word("kreativ", R.drawable.kreaiv, R.raw.l01_kreativ)); 
    lessone1Words.add(new Word("sparsam", R.drawable.sparsam, R.raw.l01_sparsam)); 
    lessone1Words.add(new Word("realistisch", R.drawable.realistisch, R.raw.l01_realistisch)); 
    lessone1Words.add(new Word("hübsch", R.drawable.hubsch, R.raw.l01_hubsch)); 
    lessone1Words.add(new Word("aufmerksam", R.drawable.aufmerksam, R.raw.l01_aufmerksam)); 

    final WordAdapter adapter = new WordAdapter(this, lessone1Words, R.color.lesson_color); 
    final ListView listView = (ListView) findViewById(R.id.word_list); 


    assert listView != null; 
    listView.setAdapter(adapter); 


    listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
     @Override 
     public void onItemClick(AdapterView<?> adapterView, final View view, final int position, long l) { 

      final Word word = lessone1Words.get(position); 

      //open Popup layout for the image but still can't iterate through the arraylist 
      LayoutInflater layoutInflater 
        = (LayoutInflater) getBaseContext() 
        .getSystemService(LAYOUT_INFLATER_SERVICE); 

      View popupView = layoutInflater.inflate(R.layout.popup, null); 


      final PopupWindow popupWindow = new PopupWindow(
        popupView, 
        AppBarLayout.LayoutParams.WRAP_CONTENT, 
        AppBarLayout.LayoutParams.WRAP_CONTENT); 
      // when touch outside the Popup layout it dismiss it 
      popupWindow.setFocusable(true); 
      popupWindow.setBackgroundDrawable(new BitmapDrawable()); 
      popupWindow.setOutsideTouchable(true); 

      //change image in ImageView of Popup.xml to current image in the array 

      final ImageView imageBig = (ImageView) popupView.findViewById(R.id.popimage); 

      imageBig.setImageResource(word.getImageResourceId()); 

       ImageView playSound = (ImageView) popupView.findViewById(R.id.play_image); 
      playSound.setOnClickListener(new View.OnClickListener() { 
       @Override 
       public void onClick(View v) { 

        //responsible for the playback of the audio according to the arraylist index 
        releaseMediaPlayer(); 
        mMediaPlayer = MediaPlayer.create(Lesson1Words.this, word.getAudioResourceId()); 
        mMediaPlayer.setVolume(0.5f, 0.5f); 
        mMediaPlayer.start(); 
        mMediaPlayer.setOnCompletionListener(mCompletionListener); 

       } 
      }); 
      popupWindow.showAtLocation(listView, Gravity.CENTER, 0, 0); 


      ImageView nextImage = (ImageView) popupView.findViewById(R.id.next_image); 

      nextImage.setOnClickListener(new View.OnClickListener() { 

       @Override 
       public void onClick(View v) { 

      // cant go for the nextimage or audio 


       } 
      }); 
     } 
    });. 
    } 
    } 

Answer 1

当创建弹出窗口，设定位置值

imageBig.setTag(Integer.valueOf(position)); 

标签在onclick函数调用

int pos = imageBig.getTag()+1; 
imageBig.setTag(Integer.valueOf(pos)); 
WordNext = getPosition(position); 
...