Question

我写了一个简单的程序，只要选中复选框中的字段，它就会推送到另一个屏幕。这是代码：



public MyScreen()
{        
    // Set the displayed title of the screen       
    setTitle("SFTS");

    LabelField dateLabel = new LabelField("Today's Route Paln",Field.FIELD_HCENTER);

    add(dateLabel);
    _dateField = new DateField("Date/time: ", System.currentTimeMillis(), DateField.DATE_TIME);
    add(_dateField);          

    add(new SeparatorField());

    for(i=0;i<name.length;i++)
    {
        s[i]=new CheckboxField(name[i]+","+addr[i]+","+time[i],false);
        add(s[i]);
        s[i].setChangeListener(f);
    }       
}    

FieldChangeListener f=new FieldChangeListener() {

    public void fieldChanged(Field field, int context) {
        UiApplication.getUiApplication().pushScreen(new secondscreen(field));
    }

};

public MyScreen() { // Set the displayed title of the screen setTitle("SFTS"); LabelField dateLabel = new LabelField("Today's Route Paln",Field.FIELD_HCENTER); add(dateLabel); _dateField = new DateField("Date/time: ", System.currentTimeMillis(), DateField.DATE_TIME); add(_dateField); add(new SeparatorField()); for(i=0;i<name.length;i++) { s[i]=new CheckboxField(name[i]+","+addr[i]+","+time[i],false); add(s[i]); s[i].setChangeListener(f); } } FieldChangeListener f=new FieldChangeListener() { public void fieldChanged(Field field, int context) { UiApplication.getUiApplication().pushScreen(new secondscreen(field)); } };

编译时没有错误，但每当我选中复选框中的字段时，我在模拟器中得到一个IllegalStateExcpetion。请帮帮我。谢谢

Answer 1

您需要声明复选框的大小。

s = new CheckboxField [name.length];

试试这个，我想你得到了解决方案。

如何将作为参数检查的复选框字段发送到pushScreen

1 个答案: