Cómo restablecer los datos de NumberPicker

Estoy usando dos NumberPickers para mostrar los datos de la provincia ( mProvincePicker ) y de la ciudad ( mCityPicker ) en mi aplicación. Cuando el usuario cambia los datos de la provincia, los datos de la ciudad deben cambiarse en consecuencia. Restablecer los datos de NumberPicker.onValueChange(NumberPicker picker, int oldVal, int newVal) en NumberPicker.onValueChange(NumberPicker picker, int oldVal, int newVal) . Pero no funciona bien y una java.lang.ArrayIndexOutOfBoundsException bloquea la aplicación.

Aquí está mi código:

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• ¿Cómo utilizar NumberPicker en la aplicación de Android con API 7?

 public class AreaPickerDialog extends Dialog implements OnValueChangeListener, OnClickListener { static final String TAG = "AreaPickerDialog"; private NumberPicker mProvincePicker; private NumberPicker mCityPicker; private Button mCancelBtn; private Button mOKBtn; private AreaUtil mAreaUtil; private List<Area> mProvinces; private int mAreaId; private int mProvinceId; private Handler mHandler; public AreaPickerDialog(Context context, Handler handler, int areaId) { super(context); mAreaUtil = AreaUtil.getInstance(); mProvinces = mAreaUtil.getProvinceList(); mAreaId = areaId; mProvinceId = mAreaUtil.getProvinceIdByAreaId(areaId); mHandler = handler; } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.dialog_area_picker); mProvincePicker = (NumberPicker) findViewById(R.id.np_province); mCityPicker = (NumberPicker) findViewById(R.id.np_city); mCancelBtn = (Button) findViewById(R.id.btn_cancel); mOKBtn = (Button) findViewById(R.id.btn_ok); initProvinceData(); mProvincePicker.setOnValueChangedListener(this); mCityPicker.setOnValueChangedListener(this); mCancelBtn.setOnClickListener(this); mOKBtn.setOnClickListener(this); } private void initProvinceData() { if (mProvinces != null && mProvinces.size() > 0) { String[] provinceNames = new String[mProvinces.size()]; for (int i = 0; i < provinceNames.length; i++) { provinceNames[i] = mProvinces.get(i).getProvincename(); } mProvincePicker.setDisplayedValues(provinceNames ); mProvincePicker.setMinValue(1); mProvincePicker.setMaxValue(mProvinces.size()); } mProvincePicker.setValue(mProvinceId); initCityData(mProvincePicker.getValue()); } private void initCityData(int provinceId) { List<Arealist> cities = mAreaUtil.getCityListOfProvince(provinceId); if (cities != null && cities.size() > 0) { try { int min = Integer.parseInt(cities.get(0).getAreaid()); int max = Integer.parseInt(cities.get(cities.size() -1).getAreaid()); String[] cityNames = new String[cities.size()]; for (int i = 0; i < cityNames.length; i++) { cityNames[i] = cities.get(i).getName(); } mCityPicker.setValue(0); mCityPicker.setDisplayedValues(cityNames); mCityPicker.setMinValue(min); mCityPicker.setMaxValue(max); } catch (NumberFormatException e) { ILog.e(TAG, e.getMessage(), e); } } } @Override public void onValueChange(NumberPicker picker, int oldVal, int newVal) { if (mProvincePicker.equals(picker)) { initCityData(mProvincePicker.getValue()); } else if (mCityPicker.equals(picker)) { mAreaId = mCityPicker.getValue(); } } @Override public void onClick(View v) { switch (v.getId()) { case R.id.btn_cancel: dismiss(); break; case R.id.btn_ok: Message msg = mHandler.obtainMessage(MineActivity.MSG_UPDATE_AREA); msg.arg1 = mAreaId; msg.sendToTarget(); dismiss(); break; default: break; } } } 

Y rastreo de error logcat:

 12-30 23:09:26.560: E/InputEventReceiver(5620): Exception dispatching input event. 12-30 23:09:26.560: W/dalvikvm(5620): threadid=1: thread exiting with uncaught exception (group=0x41ddf438) 12-30 23:09:26.580: E/AndroidRuntime(5620): FATAL EXCEPTION: main 12-30 23:09:26.580: E/AndroidRuntime(5620): java.lang.ArrayIndexOutOfBoundsException: length=14; index=15 12-30 23:09:26.580: E/AndroidRuntime(5620): at net.simonvt.numberpicker.NumberPicker.updateInputTextView(NumberPicker.java:1840) 12-30 23:09:26.580: E/AndroidRuntime(5620): at net.simonvt.numberpicker.NumberPicker.setDisplayedValues(NumberPicker.java:1423) 12-30 23:09:26.580: E/AndroidRuntime(5620): at com.meishai.app.dialog.AreaPickerDialog.initCityData(AreaPickerDialog.java:88) 12-30 23:09:26.580: E/AndroidRuntime(5620): at com.meishai.app.dialog.AreaPickerDialog.onValueChange(AreaPickerDialog.java:100) 12-30 23:09:26.580: E/AndroidRuntime(5620): at net.simonvt.numberpicker.NumberPicker.notifyChange(NumberPicker.java:1855) 12-30 23:09:26.580: E/AndroidRuntime(5620): at net.simonvt.numberpicker.NumberPicker.setValueInternal(NumberPicker.java:1641) 12-30 23:09:26.580: E/AndroidRuntime(5620): at net.simonvt.numberpicker.NumberPicker.scrollBy(NumberPicker.java:1106) 12-30 23:09:26.580: E/AndroidRuntime(5620): at net.simonvt.numberpicker.NumberPicker.onTouchEvent(NumberPicker.java:886) 12-30 23:09:26.580: E/AndroidRuntime(5620): at android.view.View.dispatchTouchEvent(View.java:7127) 12-30 23:09:26.580: E/AndroidRuntime(5620): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2170) 12-30 23:09:26.580: E/AndroidRuntime(5620): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1905) 12-30 23:09:26.580: E/AndroidRuntime(5620): at net.simonvt.numberpicker.NumberPicker.dispatchTouchEvent(NumberPicker.java:944) .... 

Estoy minValue,maxValue and DisplayedValues el minValue,maxValue and DisplayedValues para restablecer los datos de NumberPicker y no funciona, así que ¿cuál es el camino correcto?

 private void initCityData(int provinceId) { List<Arealist> cities = mAreaUtil.getCityListOfProvince(provinceId); if (cities != null && cities.size() > 0) { try { int min = Integer.parseInt(cities.get(0).getAreaid()); int max = Integer.parseInt(cities.get(cities.size() -1).getAreaid()); String[] cityNames = new String[cities.size()]; for (int i = 0; i < cityNames.length; i++) { cityNames[i] = cities.get(i).getName(); } int maxV = mCityPicker.getMaxValue(); if (max> maxV){ mCityPicker.setMinValue(min); mCityPicker.setValue(0); mCityPicker.setDisplayedValues(cityNames); mCityPicker.setMaxValue(max); }else{ mCityPicker.setMinValue(min); mCityPicker.setValue(0); mCityPicker.setMaxValue(max); mCityPicker.setDisplayedValues(cityNames); } } catch (NumberFormatException e) { ILog.e(TAG, e.getMessage(), e); } } } 

 public void setMinValue(int minValue) { if (mMinValue == minValue) { return; } if (minValue < 0) { throw new IllegalArgumentException("minValue must be >= 0"); } mMinValue = minValue; if (mMinValue > mValue) { mValue = mMinValue; } //boolean wrapSelectorWheel = mMaxValue - mMinValue > mSelectorIndices.length; //setWrapSelectorWheel(wrapSelectorWheel); //initializeSelectorWheelIndices(); //updateInputTextView(); //tryComputeMaxWidth(); invalidate(); } public void setMaxValue(int maxValue) { if (mMaxValue == maxValue) { return; } if (maxValue < 0) { throw new IllegalArgumentException("maxValue must be >= 0"); } mMaxValue = maxValue; if (mMaxValue < mValue) { mValue = mMaxValue; } //boolean wrapSelectorWheel = mMaxValue - mMinValue > mSelectorIndices.length; //setWrapSelectorWheel(wrapSelectorWheel); //initializeSelectorWheelIndices(); //updateInputTextView(); //tryComputeMaxWidth(); invalidate(); } public void setDisplayedValues(String[] displayedValues) { if (mDisplayedValues == displayedValues) { return; } mDisplayedValues = displayedValues; if (mDisplayedValues != null) { // Allow text entry rather than strictly numeric entry. mInputText.setRawInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS); } else { mInputText.setRawInputType(InputType.TYPE_CLASS_NUMBER); } boolean wrapSelectorWheel = mMaxValue - mMinValue > mSelectorIndices.length; setWrapSelectorWheel(wrapSelectorWheel); updateInputTextView(); initializeSelectorWheelIndices(); tryComputeMaxWidth(); } 

 private void initCityData(int provinceId) { List<Arealist> cities = mAreaUtil.getCityListOfProvince(provinceId); if (cities != null && cities.size() > 0) { try { int min = Integer.parseInt(cities.get(0).getAreaid()); int max = Integer.parseInt(cities.get(cities.size() -1).getAreaid()); String[] cityNames = new String[cities.size()]; for (int i = 0; i < cityNames.length; i++) { cityNames[i] = cities.get(i).getName(); } mCityPicker.setMinValue(min); mCityPicker.setMaxValue(max); mCityPicker.setDisplayedValues(cityNames); } catch (NumberFormatException e) { ILog.e(TAG, e.getMessage(), e); } } } 

 private boolean updateInputTextView() { /* * If we don't have displayed values then use the current number else * find the correct value in the displayed values for the current * number. */ String text = (mDisplayedValues == null) ? formatNumber(mValue) : mDisplayedValues[mValue - mMinValue];