好的,所以我对此很陌生,但我明白了。我刚遇到这个错误,我看到其他人也有同样的问题,但标准修复(干净)对我不起作用。我不知道如何解决这些错误!请帮忙!
第一个错误:
在sp2.setOnItemSelectedListener(new OnItemSelectedListener() {
我的 else if 语句中,我不断收到此错误:
new AdapterView.OnItemSelectedListener(){} 类型必须实现继承的抽象方法 AdapterView.OnItemSelectedListener.onNothingSelected(AdapterView)
我在那里有 onNothingSelected,它在我的 if 语句中有效,我的意思是我所做的只是复制、粘贴和编辑。
第二个错误:
在});
我的 else if 语句的末尾,我收到错误:
语法错误,插入“;” 完成声明
但一切都在那里。声明完成!
sp1.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelecteds(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
String reg_select = (sp1.getSelectedItem().toString());
if (reg_select.contentEquals("Southwest")){
sp2.setAdapter(sw_cit_adp);
sp2.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
String sw_cit_select = (sp2.getSelectedItem().toString());
if (sw_cit_select.contentEquals("Lake Charles")){
sp3.setAdapter(sw_lake_charles_adp); }
else if (sw_cit_select.contentEquals("Iowa")){
sp3.setAdapter(sw_iowa_adp); }
;}
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
};});}
else if (reg_select.contentEquals("South Central")){
sp2.setAdapter(sc_cit_adp);
sp2.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
String sc_cit_select = (sp2.getSelectedItem().toString());
if (sc_cit_select.contentEquals("Lafayette")){
sp3.setAdapter(sc_lafayette_adp); }
else if (sc_cit_select.contentEquals("Gueydan")){
sp3.setAdapter(sc_gueydan_adp); }
;}
public void onNothingSelected(
AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
;
});
}