Android 完成改装调用后如何调用方法?
我过去常常显示API中的配置文件,但我的问题是Android 完成改装调用后如何调用方法?,android,retrofit,Android,Retrofit,我过去常常显示API中的配置文件,但我的问题是bubblePicker.setAdapter()在完成改装调用之前执行 我认为这是因为enqueue()是一种异步方法,所以它会在不等待的情况下执行行。我不知道如何解决这个问题 我的代码将抛出NullPointerException,因为studentsArray为null 请给我一些建议。 谢谢 我的代码: public class FriendFragment extends Fragment { Http http = new Ht
bubblePicker.setAdapter()
在完成改装调用之前执行
我认为这是因为enqueue()
是一种异步方法,所以它会在不等待的情况下执行行。我不知道如何解决这个问题
我的代码将抛出NullPointerException,因为studentsArray
为null
请给我一些建议。
谢谢
我的代码:
public class FriendFragment extends Fragment {
Http http = new Http();
final String BASE_URL = http.getUrl();
String[] studentsArray;
List < Student > students;
BubblePicker bubblePicker;
public static FriendFragment newInstance() {
FriendFragment fragment = new FriendFragment();
return fragment;
}
private ApiService getInterfaceService() {
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
final ApiService mInterfaceService = retrofit.create(ApiService.class);
return mInterfaceService;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_friend, container, false);
bubblePicker = (BubblePicker) rootView.findViewById(R.id.picker);
ApiService mApiService = getInterfaceService();
Call < GetFriendsPhotoDao > mService = mApiService.photo("2", "2202", "2", "1", "1", "2558");
//***** Call API Here *****
mService.enqueue(new Callback < GetFriendsPhotoDao > () {
@Override
public void onResponse(Call < GetFriendsPhotoDao > call, Response < GetFriendsPhotoDao > response) {
GetFriendsPhotoDao getFriendsPhotoDao = response.body();
if (getFriendsPhotoDao.getSuccess()) {
students = getFriendsPhotoDao.getStudent();
studentsArray = new String[students.size()];
for (int i = 0; i < studentsArray.length; i++) {
studentsArray[i] = students.get(i).getStuId();
}
}
}
@Override
public void onFailure(Call < GetFriendsPhotoDao > call, Throwable t) {
call.cancel();
}
});
addBubble();
return rootView;
}
//***** Add bubbles here *****
private void addBubble() {
bubblePicker.setBubbleSize(10);
bubblePicker.setAdapter(new BubblePickerAdapter() {
@Override
public int getTotalCount() {
return studentsArray.length;
}
@NotNull
@Override
public PickerItem getItem(int position) {
PickerItem item = new PickerItem(); item.setIcon(getResources().getDrawable(R.drawable.person));
item.setTextColor(ContextCompat.getColor(getContext(), android.R.color.white));
return item;
}
});
}
...
}
公共类FriendFragment扩展了片段{
Http=newhttp();
最后一个字符串BASE_URL=http.getUrl();
字符串[]studentsArray;
列出<学生>学生;
泡泡嘴泡泡嘴;
公共静态FriendFragment newInstance(){
FriendFragment=新的FriendFragment();
返回片段;
}
私有API服务getInterfaceService(){
改装改装=新改装.Builder()
.baseUrl(基本URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
final-ApiService-mInterfaceService=reformation.create(ApiService.class);
返回Minterface服务;
}
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
}
@凌驾
创建视图上的公共视图(布局、充气机、视图组容器、,
Bundle savedInstanceState){
视图根视图=充气机。充气(R.layout.fragment\u friend,container,false);
bubblePicker=(bubblePicker)rootView.findviewbyd(R.id.picker);
ApiService mApiService=getInterfaceService();
调用mService=mApiService.photo(“2”、“2202”、“2”、“1”、“1”、“2558”);
//*****在这里调用API*****
mService.enqueue(新回调(){
@凌驾
公共void onResponse(调用调用,响应响应){
getFriendshotodao getFriendshotodao=response.body();
if(getFriendsPhotoDao.getSuccess()){
students=getFriendsPhotoDao.getStudent();
studentsArray=新字符串[students.size()];
for(int i=0;iCall,Throwable t){
call.cancel();
}
});
添加气泡();
返回rootView;
}
//*****在此处添加气泡*****
私有void addBubble(){
气泡尺寸(10);
setAdapter(新的BubblePickerAdapter(){
@凌驾
public int getTotalCount(){
返回studentsArray.length;
}
@NotNull
@凌驾
公共PickerItem getItem(int位置){
PickerItem=new PickerItem();item.setIcon(getResources().getDrawable(R.drawable.person));
setTextColor(ContextCompat.getColor(getContext(),android.R.color.white));
退货项目;
}
});
}
...
}
您需要移动addBubble()代码>从内部onResponse
,获得响应后
mService.enqueue(new Callback < GetFriendsPhotoDao > () {
@Override
public void onResponse(Call < GetFriendsPhotoDao > call, Response < GetFriendsPhotoDao > response) {
GetFriendsPhotoDao getFriendsPhotoDao = response.body();
if (getFriendsPhotoDao.getSuccess()) {
students = getFriendsPhotoDao.getStudent();
studentsArray = new String[students.size()];
for (int i = 0; i < studentsArray.length; i++) {
studentsArray[i] = students.get(i).getStuId();
}
}
addBubble();
//^^^^^^^
}
@Override
public void onFailure(Call < GetFriendsPhotoDao > call, Throwable t) {
call.cancel();
}
});
//addBubble();
mService.enqueue(新回调(){
@凌驾
公共void onResponse(调用调用,响应响应){
getFriendshotodao getFriendshotodao=response.body();
if(getFriendsPhotoDao.getSuccess()){
students=getFriendsPhotoDao.getStudent();
studentsArray=新字符串[students.size()];
for(int i=0;iCall,Throwable t){
call.cancel();
}
});
//添加气泡();
实际上,您正在创建适配器的实例,并在web service override onResponse方法之外设置适配器,这就是适配器中未设置数据的原因。请尝试此方法-
public class FriendFragment extends Fragment {
Http http = new Http();
final String BASE_URL = http.getUrl();
String[] studentsArray;
List < Student > students;
BubblePicker bubblePicker;
public static FriendFragment newInstance() {
FriendFragment fragment = new FriendFragment();
return fragment;
}
private ApiService getInterfaceService() {
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
final ApiService mInterfaceService = retrofit.create(ApiService.class);
return mInterfaceService;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_friend, container, false);
bubblePicker = (BubblePicker) rootView.findViewById(R.id.picker);
ApiService mApiService = getInterfaceService();
Call < GetFriendsPhotoDao > mService = mApiService.photo("2", "2202", "2", "1", "1", "2558");
//***** Call API Here *****
mService.enqueue(new Callback < GetFriendsPhotoDao > () {
@Override
public void onResponse(Call < GetFriendsPhotoDao > call, Response < GetFriendsPhotoDao > response) {
GetFriendsPhotoDao getFriendsPhotoDao = response.body();
if (getFriendsPhotoDao.getSuccess()) {
students = getFriendsPhotoDao.getStudent();
studentsArray = new String[students.size()];
for (int i = 0; i < studentsArray.length; i++) {
studentsArray[i] = students.get(i).getStuId();
}
addBubble();
}
}
@Override
public void onFailure(Call < GetFriendsPhotoDao > call, Throwable t) {
call.cancel();
}
});
//addBubble();
return rootView;
}
//***** Add bubbles here *****
private void addBubble() {
bubblePicker.setBubbleSize(10);
bubblePicker.setAdapter(new BubblePickerAdapter() {
@Override
public int getTotalCount() {
return studentsArray.length;
}
@NotNull
@Override
public PickerItem getItem(int position) {
PickerItem item = new PickerItem(); item.setIcon(getResources().getDrawable(R.drawable.person));
item.setTextColor(ContextCompat.getColor(getContext(), android.R.color.white));
return item;
}
});
}
...
}
公共类FriendFragment扩展了片段{
Http=newhttp();
最后一个字符串BASE_URL=http.getUrl();
字符串[]studentsArray;
列出<学生>学生;
泡泡嘴泡泡嘴;
公共静态FriendFragment newInstance(){
FriendFragment=新的FriendFragment();
返回片段;
}
私有API服务getInterfaceService(){
改装改装=新改装.Builder()
.baseUrl(基本URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
final-ApiService-mInterfaceService=reformation.create(ApiService.class);
返回Minterface服务;
}
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
}
@凌驾
创建视图上的公共视图(布局、充气机、视图组容器、,
Bundle savedInstanceState){
视图根视图=充气机。充气(R.layout.fragment\u friend,container,false);
bubblePicker=(bubblePicker)rootView.findviewbyd(R.id.picker);
ApiService mApiService=getInterfaceService();
调用mService=mApiService.photo(“2”、“2202”、“2”、“1”、“1”、“2558”);
//*****在这里调用API*****
mService.enqueue(新回调(){
@凌驾
公共void onResponse(调用调用,响应响应){
getFriendshotodao getFriendshotodao=response.body();
@Override
protected void finalize() throws Throwable {
super.finalize();
addBubble(); //your func
}