Java 转到textview时与微调器相关的问题
我正在使用带有从属微调器的代码,但存在以下问题: 微调器正确地从JSON文件加载,但当我尝试将第一个微调器的结果传递给textview时,它不会显示微调器的文本,而是显示以下内容: 我附上图片 我使用此代码传递文本视图Java 转到textview时与微调器相关的问题,java,android,android-spinner,Java,Android,Android Spinner,我正在使用带有从属微调器的代码,但存在以下问题: 微调器正确地从JSON文件加载,但当我尝试将第一个微调器的结果传递给textview时,它不会显示微调器的文本,而是显示以下内容: 我附上图片 我使用此代码传递文本视图 ed_acu.setText(jornadaSpinner.getSelectedItem().toString()); 但是我在我的文本视图“ed_acu”中得到了这个错误,而不是文本 com.elgeos.tracker.spinnerCOL.State@a8f178
ed_acu.setText(jornadaSpinner.getSelectedItem().toString());
但是我在我的文本视图“ed_acu”中得到了这个错误,而不是文本
com.elgeos.tracker.spinnerCOL.State@a8f178
爪哇州
public class State {
private String stateName;
private List<String> cities;
public State(String stateName, List<String> cities) {
this.stateName = stateName;
this.cities = cities;
}
public String getStateName() {
return stateName;
}
public List<String> getCities() {
return cities;
}
}
公共类状态{
私有字符串stateName;
私人名单城市;
公共州(字符串stateName,列出城市){
this.stateName=stateName;
这个。城市=城市;
}
公共字符串getStateName(){
返回stateName;
}
公共列表(城市){
回归城市;
}
}
StateAdapter java
public class StateAdapter extends ArrayAdapter<State> {
private List<State> stateList = new ArrayList<>();
public StateAdapter(@NonNull Context context, int resource, int spinnerText, @NonNull List<State> stateList) {
super(context, resource, spinnerText, stateList);
this.stateList = stateList;
}
@Override
public State getItem(int position) {
return stateList.get(position);
}
@NonNull
@Override
public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
return initView(position);
}
@Override
public View getDropDownView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
return initView(position);
}
/**
* Gets the state object by calling getItem and
* Sets the state name to the drop-down TextView.
*
* @param position the position of the item selected
* @return returns the updated View
*/
private View initView(int position) {
State state = getItem(position);
LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = inflater.inflate(R.layout.jornada_list, null);
TextView textView = v.findViewById(R.id.spinnerText);
textView.setText(state.getStateName() );
return v;
}
}
公共类StateAdapter扩展了ArrayAdapter{
private List stateList=new ArrayList();
公共StateAdapter(@NonNull上下文上下文、int资源、int spinnerText、@NonNull列表stateList){
超级(上下文、资源、喷丝器文本、状态列表);
this.stateList=状态列表;
}
@凌驾
公共状态getItem(int位置){
返回stateList.get(位置);
}
@非空
@凌驾
公共视图getView(int位置,@Nullable视图convertView,@NonNull视图组父级){
返回初始视图(位置);
}
@凌驾
公共视图getDropDownView(int位置,@Nullable视图convertView,@NonNull视图组父级){
返回初始视图(位置);
}
/**
*通过调用getItem和获取状态对象
*将状态名称设置为下拉文本视图。
*
*@param position选定项目的位置
*@return返回更新后的视图
*/
私有视图initView(内部位置){
状态=获取项目(位置);
LayoutInflater充气器=(LayoutInflater)getContext().getSystemService(Context.LAYOUT\u充气器\u SERVICE);
视图v=充气机充气(R.layout.jornada_列表,空);
TextView TextView=v.findViewById(R.id.spinnerText);
textView.setText(state.getStateName());
返回v;
}
}
我的主要活动代码
private void loadStateCityDetails() {
final List<State> statesList = new ArrayList<>();
final List<String> states = new ArrayList<>();
JsonArrayRequest jsArrayRequest = new JsonArrayRequest
(Request.Method.GET, cities_url, (String) null, new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray responseArray) {
pDialog.dismiss();
try {
//Parse the JSON response array by iterating over it
for (int i = 0; i < responseArray.length(); i++) {
JSONObject response = responseArray.getJSONObject(i);
String state = response.getString(KEY_STATE);
JSONArray cities = response.getJSONArray(KEY_CITIES);
List<String> citiesList = new ArrayList<>();
for (int j = 0; j < cities.length(); j++) {
citiesList.add(cities.getString(j));
}
statesList.add(new State(state, citiesList));
states.add(state);
}
final StateAdapter stateAdapter = new StateAdapter(activity_make_user.this,
R.layout.jornada_list, R.id.spinnerText, statesList);
jornadaSpinner.setAdapter(stateAdapter);
jornadaSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
//Populate City list to the second spinner when
// a state is chosen from the first spinner
State cityDetails = stateAdapter.getItem(position);
List<String> cityList = cityDetails.getCities();
ArrayAdapter citiesAdapter = new ArrayAdapter<>(activity_make_user.this,
R.layout.colegio_list, R.id.citySpinnerText, cityList);
colegioSpinner.setAdapter(citiesAdapter);
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
pDialog.dismiss();
//Display error message whenever an error occurs
Toast.makeText(getApplicationContext(),
error.getMessage(), Toast.LENGTH_SHORT).show();
}
});
// Access the RequestQueue through your singleton class.
MySingleton.getInstance(this).addToRequestQueue(jsArrayRequest);
}
private void loadStateCityDetails(){
最终列表状态列表=新的ArrayList();
最终列表状态=新的ArrayList();
JsonArrayRequest jsArrayRequest=新JsonArrayRequest
(Request.Method.GET,cities\u url,(String)null,new Response.Listener(){
@凌驾
公共void onResponse(JSONArray responseArray){
pDialog.disclose();
试一试{
//通过迭代来解析JSON响应数组
对于(int i=0;i
正如您在StateAdapter
中看到的,您正在将微调器设置为显示state.getStateName()
。在另一个文本视图中看到的不是错误,而是直接传递给setText()
的State
对象的默认toString()
。使用jornadaspiner.getSelectedItem().getState
if(!TextUtils.isEmpty(jornadaSpinner.getSelectedItem().getState()))
ed_acu.setText(jornadaSpinner.getSelectedItem().getState());
public class State {
private String stateName;
private List<String> cities;
public State(String stateName, List<String> cities) {
this.stateName = stateName;
this.cities = cities;
}
public String getStateName() {
return stateName;
}
public List<String> getCities() {
return cities;
}
@Override
String toString(){
return stateName;
}
}