Android：更改一个数字选择器会导致其他数字选择器发生变化

时间：2018-11-19 06:30:00

标签： java android android-listview numberpicker

我已经创建了一个列表视图。列表视图中的每个项目都有两个UI元素。一个是textview，另一个是数字选择器。现在的问题是，如果我单击第一个数字选择器以更改值，则第四个数字也会更改，反之亦然。这是我的getview函数

private class ViewHolder {
        public TextView name;
        public NumberPicker numberPicker;
        public CustomListener listener;
    }

 public View getView(final int position, @Nullable View convertView, @NonNull final ViewGroup parent) {
        ViewHolder holder;
        View listItem = convertView;
        currentCell=getItem(position);
        currentCell.setPosition(position);
        if (listItem == null) {
            LayoutInflater inflater = LayoutInflater.from(mContext);
            listItem = inflater.inflate(R.layout.organ_item, parent, false);
        }
            holder = new ViewHolder();
            holder.name = (TextView) listItem.findViewById(R.id.organName);
            holder.numberPicker = (NumberPicker) 
            listItem.findViewById(R.id.numberPicker);
            holder.numberPicker.setMinValue(1);
            holder.numberPicker.setMaxValue(10);
            holder.numberPicker.setOnValueChangedListener(holder.listener);

            holder.numberPicker.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() {
                @Override
                public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
            currentCell=getItem(position);
            View parentRow = (View) picker.getParent();
            ListView mListView=(ListView)parentRow.getParent().getParent();

            ConstraintLayout constraintLayoutView = (ConstraintLayout) mListView.getChildAt(currentCell.getPosition());

            RelativeLayout relativeLayout = (RelativeLayout)constraintLayoutView.getChildAt(0);
            NumberPicker p = (NumberPicker) relativeLayout.getChildAt(1);
            if(position==currentCell.getPosition()) 
              {
                p.setValue(newVal);
              }
            else
              {
                 p.setValue(oldVal);
               }
                }
            });
            //Set the name
            TextView organName = (TextView)listItem.findViewById(R.id.organName);

 organName.setText(QuickMeditationScreenInfo.getInstance().getScreenNameFromIndex(currentCell.getOrgan()));
        return listItem;
    }

即使我注释掉onValueChangeListener，也会发生相同的行为，我认为这是列表中数字选择器的默认行为。我已经花了多个小时，但找不到解决方案。我还调试了代码，当我更改值时，调试器仅进入onValueChange代码一次。

2 个答案:

答案 0 :(得分：0)

您每次都需要设置数字选择器默认值

1542609097.397 26572-26572/com.app.mylife W/System.err: java.net.SocketTimeoutException: timeout
1542609097.397 26572-26572/com.app.mylife W/System.err:     at okio.Okio$4.newTimeoutException(Okio.java:230)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okio.AsyncTimeout.exit(AsyncTimeout.java:285)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okio.AsyncTimeout$2.read(AsyncTimeout.java:241)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okio.RealBufferedSource.indexOf(RealBufferedSource.java:345)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:217)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http1.Http1Codec.readHeaderLine(Http1Codec.java:212)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http1.Http1Codec.readResponseHeaders(Http1Codec.java:189)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.java:88)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:45)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:125)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.logging.HttpLoggingInterceptor.intercept(HttpLoggingInterceptor.java:212)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
1542609097.398 26572-26572/com.app.mylife W/System.err:     at com.app.mylife.retrofit.RetrofitClient$getClient$1.intercept(RetrofitClient.kt:64)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:200)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at okhttp3.RealCall.execute(RealCall.java:77)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at retrofit2.OkHttpCall.execute(OkHttpCall.java:174)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at retrofit2.adapter.rxjava2.CallExecuteObservable.subscribeActual(CallExecuteObservable.java:41)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at io.reactivex.Observable.subscribe(Observable.java:10179)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at retrofit2.adapter.rxjava2.BodyObservable.subscribeActual(BodyObservable.java:34)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at io.reactivex.Observable.subscribe(Observable.java:10179)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at io.reactivex.internal.operators.observable.ObservableSubscribeOn$1.run(ObservableSubscribeOn.java:39)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at io.reactivex.Scheduler$1.run(Scheduler.java:134)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:59)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:51)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at java.util.concurrent.FutureTask.run(FutureTask.java:266)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at java.lang.Thread.run(Thread.java:764)
1542609097.399 26572-26572/com.app.mylife W/System.err: Caused by: java.net.SocketException: Socket closed
1542609097.399 26572-26572/com.app.mylife W/System.err:     at java.net.SocketInputStream.read(SocketInputStream.java:203)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at java.net.SocketInputStream.read(SocketInputStream.java:139)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at okio.Okio$2.read(Okio.java:139)
1542609097.399 26572-26572/com.app.mylife W/System.err:     at okio.AsyncTimeout$2.read(AsyncTimeout.java:237)
1542609097.400 26572-26572/com.app.mylife W/System.err:     ... 39 more

答案 1 :(得分：0)

尝试使用以下界面将Click事件处理到适配器中 例如，使一个接口进入适配器类.. 

    private onItemClick onItemClick;

public void setOnItemClick(DisplayAllData.onItemClick onItemClick) {
    this.onItemClick = onItemClick;
}

public interface onItemClick{
    void onItemSelected(int position); // pass your data 
}

在诸如数字列表器之类的getView（）方法中，将所有逻辑代码称为活动或片段。

        holder.mTvName.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            onItemClick.onItemSelected(position);
        }
    });

在适配器设置为listview或recyclerview之后的活动或片段 适配器不为null，然后在下面的代码中调用。.

allDataAdapter.setOnItemClick(new DisplayAllData.onItemClick() {
                @Override
                public void onItemSelected(int position) {
                    // here called all logical part
                    allDataAdapter.notifyDataSetChanged();
                }
            });
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