java-无法与TTS同步在recyclerVIew中显示imageView

概述当TTS(文本到语音)播放所有可用列表项时,我如何在recyclerView中显示/隐藏imageView,一一播放！活动方法-此方法称为带有循环的r(不起作用,没有错误,但根本没有给出我的预期输出 int position=0; public void convertTextToSpeech() { Multiples mul

当TTS(文本到语音)播放所有可用列表项时,我如何在recyclerVIEw中显示/隐藏imageVIEw,一一播放！

活动方法
-此方法称为带有循环的r(不起作用,没有错误,但根本没有给出我的预期输出

    int position=0;    public voID convertTextToSpeech() {        Multiples multiples1=items.get(position);        for (Multiples item : items) {            text = item.first + "  " + item.getSecond() + " Za " + item.getResult() + ".";            tts.speak(text,TextToSpeech.QUEUE_ADD,null);            boolean speakingEnd = tts.isspeaking();            if (speakingEnd) {                Toast.makeText(getApplicationContext(),"Speaking...."+position,Toast.LENGTH_SHORT).show();                multiples1.setimage_show(true);                mAdapter.notifyItemChanged(position);            } else {                Toast.makeText(getApplicationContext(),"Done...."+position,Toast.LENGTH_SHORT).show();            }            position++;        }    }

下面是完整的代码,以供您进一步了解,

首先,我在recyclerVIEw中显示了所有项目.之后,我在具有for循环到TTS的方法中调用显示的项目来播放每行(列表项目).我现在面临的问题是,由于TTS正在读取每个recyclerVIEw项目,因此无法显示imageVIEw.

预期的输出是每行项目的TTS播放textVIEw时,应同时显示imageVIEw(#image1)

尝试码更新

displayActivityResultAdapter.java

    ......    .......    int position = 0;    public voID convertTextToSpeech() {        Multiples multiples1=items.get(position);        for (Multiples item : items) {            text = item.first + "  " + item.getSecond() + " Za " + item.getResult() + ".";            tts.speak(text,null);            boolean speakingEnd = tts.isspeaking();            // Toast.makeText(getApplicationContext(),Toast.LENGTH_SHORT).show();           // multiples1.setimage_show(true);            //  mAdapter.notifyItemChanged(position);           // Log.i("values","------------------------------------------Row value-"+item.getFirst()+" X "+item.getSecond()+",position="+position);             //------------------------            MyAdapter m= (MyAdapter)  mAdapter;            m.updateItem(item,position);            position++;        }    }}

MyAdapter.java

    .....    .....    // Replace the contents of a vIEw (invoked by the layout manager)    @OverrIDe    public voID onBindVIEwHolder(MyVIEwHolder holder,int position) {        // - get element from your dataset at this position        // - replace the contents of the vIEw with that element        if (holder instanceof MyAdapter.MyVIEwHolder) {            final MyAdapter.MyVIEwHolder vIEw = (MyAdapter.MyVIEwHolder) holder;            Multiples p = items.get(position);            vIEw.name.setText(p.first + " X " + p.getSecond() + "= "+p.getResult());            if(position>0) {                if (p.image_show) {                    vIEw.image1.setVisibility(VIEw.VISIBLE);                    vIEw.image.setVisibility(VIEw.INVISIBLE);                } else {                    vIEw.image1.setVisibility(VIEw.INVISIBLE);                    vIEw.image.setVisibility(VIEw.VISIBLE);                }            }        }    }    public voID updateItem(Multiples newItem,int pos) {        Log.i("values","-----In updateItem Log----Row value-"+newItem.getFirst()+" X "+newItem.getSecond()+",position="+pos);        items.set(pos,newItem); //update passed value in your adapter's data structure        Log.e("msg","-----items.get(pos)------------->"+items.get(pos).getFirst()+" X " +items.get(pos).getSecond());        notifyItemChanged(pos,newItem);    }    // Return the size of your dataset (invoked by the layout manager)    @OverrIDe    public int getItemCount() {        return items.size();    }}

最佳答案您的主要失败是缺少TTS侦听器.没有它,您将不知道何时应该更新RecyclerVIEw.
侦听器可以如下所示：

class MyListener extends UtteranceProgressListener {        @OverrIDe        public voID onStart(String utteranceID) {            int currentIndex = Integer.parseInt(utteranceID);            mMainAdapter.setCurrentposition(currentIndex);            handler.post(new Runnable() {                @OverrIDe                public voID run() {                    mMainAdapter.notifyDataSetChanged();                }            });        }        @OverrIDe        public voID onDone(String utteranceID) {            int currentIndex = Integer.parseInt(utteranceID);            mMainAdapter.setCurrentposition(-1);            handler.post(new Runnable() {                @OverrIDe                public voID run() {                    mMainAdapter.notifyDataSetChanged();                }            });            if (currentIndex < data.size() - 1) {                playSound(currentIndex + 1);            }        }        @OverrIDe        public voID onError(String utteranceID) {        }    }

我创建了一个测试项目,以演示如何实现. Here可以看到它是如何工作的. Here是我的github存储库. 总结

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