在警报对话框中将值设置为数字选取器

Question

我有一个警报对话框，其中包含来自 xml 文件的自定义布局。为了使数字选择器正常工作，我必须为它们设置一些值。我该如何管理？

显示地图类中的全局变量：

AlertDialog.Builder alert;  //dialog f. koord.
static Dialog d ;
NumberPicker np1, np2, np3, np4, np5, np6, np7, np8;
String abc[] = new String[] { "A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z" }; 
String zero_to_99[] = new String[100];

showDialog（）：

    public void showDialog()
{
    final Context context=getApplicationContext();
     //final Dialog d = new Dialog(ShowMap.this);
     //Creating the AlertDialog object
     final AlertDialog.Builder d = new AlertDialog.Builder(this);
     //customDialog.setTitle("Custom Dialog");
     LayoutInflater layoutInflater = (LayoutInflater)getApplicationContext().getSystemService(LAYOUT_INFLATER_SERVICE);
     View view=layoutInflater.inflate(R.layout.dialog_pick_coord,null);
     String txt_title = context.getResources().getString(R.string.txt_head_search_coord);
     d.setTitle(txt_title);
     np1 = (NumberPicker) findViewById(R.id.p1);
     np2 = (NumberPicker) findViewById(R.id.p2);
     np3 = (NumberPicker) findViewById(R.id.p3);
     np4 = (NumberPicker) findViewById(R.id.p4);
     np5 = (NumberPicker) findViewById(R.id.p5);
     np6 = (NumberPicker) findViewById(R.id.p6);
     np7 = (NumberPicker) findViewById(R.id.p7);
     np8 = (NumberPicker) findViewById(R.id.p8);
     //d.setContentView(R.layout.dialog_pick_coord);
     d.setPositiveButton(context.getResources().getString(R.string.Accept), new DialogInterface.OnClickListener() {
         public void onClick(DialogInterface dialog, int which) {
             //Code to read out the pickers and work with the values
         }
     });
     d.setNegativeButton(context.getResources().getString(R.string.Cancel), new DialogInterface.OnClickListener() {
         public void onClick(DialogInterface dialog, int which) {
         }
     });

     d.setView(view);
     d.show();
}

setAlertDialogValues：

    public void setAlertDialogValues() {
    //Spalte
     np1.setMaxValue(60);   // max value 60
     np1.setMinValue(1);    // min value 1
     np1.setWrapSelectorWheel(false);
     //Zeile
     np2.setMaxValue(25);   // max value Z
     np2.setMinValue(0);    // min value A
     np2.setDisplayedValues( abc );
     np2.setWrapSelectorWheel(false);
     //100km Quadrat 1
     np3.setMaxValue(25);   // max value Z
     np3.setMinValue(0);    // min value A
     np3.setDisplayedValues( abc );
     np3.setWrapSelectorWheel(false);
     //100km Quadrat 2
     np4.setMaxValue(25);   // max value Z
     np4.setMinValue(0);    // min value A
     np4.setDisplayedValues( abc );
     np4.setWrapSelectorWheel(false);
     //Easting xx*
     np5.setMaxValue(99);   // max value 99
     np5.setMinValue(0);    // min value 0
     np5.setDisplayedValues( zero_to_99 );
     np5.setWrapSelectorWheel(false);
     //Easting **x
     np6.setMaxValue(9);    // max value 9
     np6.setMinValue(0);    // min value 0
     np6.setWrapSelectorWheel(false);
     //Northing xx*
     np7.setMaxValue(99);   // max value 99
     np7.setMinValue(0);    // min value 0
     np7.setDisplayedValues( zero_to_99 );
     np7.setWrapSelectorWheel(false);
     //Northing **x
     np8.setMaxValue(9);    // max value 9
     np8.setMinValue(0);    // min value 0
     np8.setWrapSelectorWheel(false);

     np1.setValue(utmCoordElements[0]);
     np2.setValue(utmCoordElements[1]);
     np3.setValue(utmCoordElements[2]);
     np4.setValue(utmCoordElements[3]);
     np5.setValue(utmCoordElements[4]);
     np6.setValue(utmCoordElements[5]);
     np7.setValue(utmCoordElements[6]);
     np8.setValue(utmCoordElements[7]);
}

我应该在哪里调用此函数？当我在d.show之后调用它时，我收到错误...

Answer 1

更改：

 np1 = (NumberPicker) findViewById(R.id.p1);
 ....

自：

 np1 = (NumberPicker) view.findViewById(R.id.p1);
 ....