单击按钮时如何遍历自定义ArrayList以移动到下一个项目

Question

我是 android 新手，甚至编程才 3 周 我正在尝试通过显示图片和播放音频来为我的德语课构建一个应用程序。 我现在的问题是，我有一个列表视图，其中显示了一个小图片和一个单词，然后我为此列表视图创建了一个 onItemClickListener，它显示了 Word 类型的项目表单和数组列表（为图像资源和音频资源的构造函数和获取方法以及单词本身的字符串）

无论如何，当项目单击项目列表时，我管理它会打开显示图像和播放按钮的弹出布局。

然后我想添加下一个和上一个按钮来获取下一个图像和音频，而不是关闭弹出窗口并再次单击想要的项目但完全没有运气。

我会尽量贴出最重要的相关代码

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

创建弹窗时，设置一个带有位置值的标签

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

在onClick函数调用中

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