Android 无法使用Reformation2+;在回收器视图中获取数据;RxJava2
我使用改型2发出网络请求我尝试使用RxJava实现从taht I的recycler视图中的服务器获取数据,但数据没有获取,尽管它在onNext()方法上显示日志消息 下面是我的代码: ApiService.javaAndroid 无法使用Reformation2+;在回收器视图中获取数据;RxJava2,android,retrofit2,rx-java2,Android,Retrofit2,Rx Java2,我使用改型2发出网络请求我尝试使用RxJava实现从taht I的recycler视图中的服务器获取数据,但数据没有获取,尽管它在onNext()方法上显示日志消息 下面是我的代码: ApiService.java public interface ApiService { @POST("retrofitUsers") @FormUrlEncoded Observable<String> saveData(@Field("name") String name
public interface ApiService {
@POST("retrofitUsers")
@FormUrlEncoded
Observable<String> saveData(@Field("name") String name,
@Field("age") String age)
@GET("getUsers")
Flowable<List<BioData>> getData();
}
BioData.java
public class RetrofitClient {
private static Retrofit retrofit = null;
public static Retrofit getInstance() {
OkHttpClient okHttpClient = new OkHttpClient.Builder()
.connectTimeout(22,TimeUnit.SECONDS)
.readTimeout(22, TimeUnit.SECONDS)
.connectTimeout(22, TimeUnit.SECONDS)
.build();
if(retrofit == null)
retrofit = new Retrofit.Builder()
.baseUrl("https://example.com/")
.addConverterFactory(
GsonConverterFactory
.create(
new GsonBuilder().setLenient().create()
)
)
.addCallAdapterFactory(
RxJava2CallAdapterFactory.create()
)
.client(okHttpClient)
.build();
return retrofit;
}
private RetrofitClient() {
}
}
public class BioData {
@SerializedName("name")
@Expose
private String name;
@SerializedName("age")
@Expose
private String age;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
}
public class Users extends AppCompatActivity {
RecyclerView recycle;
UserAdapter adapter;
ProgressBar prog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_users);
prog = findViewById(R.id.prog);
recycle = findViewById(R.id.recycle);
recycle.setHasFixedSize(true);
recycle.setLayoutManager(new LinearLayoutManager(this));
fetchData();
}
private void fetchData() {
Retrofit retrofit = RetrofitClient.getInstance();
ApiService myApi = retrofit.create(ApiService.class);
myApi.getData()
.toObservable()
.subscribeOn(Schedulers.io())
.subscribe(new Observer<List<BioData>>() {
@Override
public void onSubscribe(Disposable d) {
}
@Override
public void onNext(List<BioData> bioData) {
if(bioData.size() > 0){
Log.d("Data","Hello");
}
adapter = new UserAdapter(bioData,getApplicationContext());
recycle.setAdapter(adapter);
}
@Override
public void onError(Throwable e) {
Toast.makeText(getApplicationContext(),e.getMessage(),Toast.LENGTH_SHORT).show();
}
@Override
public void onComplete() {
}
});
}
}
Users.java
public class RetrofitClient {
private static Retrofit retrofit = null;
public static Retrofit getInstance() {
OkHttpClient okHttpClient = new OkHttpClient.Builder()
.connectTimeout(22,TimeUnit.SECONDS)
.readTimeout(22, TimeUnit.SECONDS)
.connectTimeout(22, TimeUnit.SECONDS)
.build();
if(retrofit == null)
retrofit = new Retrofit.Builder()
.baseUrl("https://example.com/")
.addConverterFactory(
GsonConverterFactory
.create(
new GsonBuilder().setLenient().create()
)
)
.addCallAdapterFactory(
RxJava2CallAdapterFactory.create()
)
.client(okHttpClient)
.build();
return retrofit;
}
private RetrofitClient() {
}
}
public class BioData {
@SerializedName("name")
@Expose
private String name;
@SerializedName("age")
@Expose
private String age;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
}
public class Users extends AppCompatActivity {
RecyclerView recycle;
UserAdapter adapter;
ProgressBar prog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_users);
prog = findViewById(R.id.prog);
recycle = findViewById(R.id.recycle);
recycle.setHasFixedSize(true);
recycle.setLayoutManager(new LinearLayoutManager(this));
fetchData();
}
private void fetchData() {
Retrofit retrofit = RetrofitClient.getInstance();
ApiService myApi = retrofit.create(ApiService.class);
myApi.getData()
.toObservable()
.subscribeOn(Schedulers.io())
.subscribe(new Observer<List<BioData>>() {
@Override
public void onSubscribe(Disposable d) {
}
@Override
public void onNext(List<BioData> bioData) {
if(bioData.size() > 0){
Log.d("Data","Hello");
}
adapter = new UserAdapter(bioData,getApplicationContext());
recycle.setAdapter(adapter);
}
@Override
public void onError(Throwable e) {
Toast.makeText(getApplicationContext(),e.getMessage(),Toast.LENGTH_SHORT).show();
}
@Override
public void onComplete() {
}
});
}
}
公共类用户扩展AppCompative活动{
回收查看回收;
用户适配器;
ProgressBar程序;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_用户);
prog=findviewbyd(R.id.prog);
回收=findViewById(R.id.recycle);
recycle.setHasFixedSize(true);
recycle.setLayoutManager(新的LinearLayoutManager(此));
fetchData();
}
私有void fetchData(){
Refundation-Refundation=RefundationClient.getInstance();
ApiService myApi=reformation.create(ApiService.class);
myApi.getData()
.TooObservable()文件
.subscribeOn(Schedulers.io())
.订阅(新观察员){
@凌驾
认购的公共无效(一次性d){
}
@凌驾
public void onNext(列出bioData){
如果(bioData.size()>0){
Log.d(“数据”,“你好”);
}
adapter=newuseradapter(bioData,getApplicationContext());
recycle.setAdapter(适配器);
}
@凌驾
公共无效申报人(可丢弃的e){
Toast.makeText(getApplicationContext(),e.getMessage(),Toast.LENGTH_SHORT).show();
}
@凌驾
未完成的公共空间(){
}
});
}
}
有人请让我知道什么问题,为什么数据不显示。任何帮助将不胜感激
谢谢请尝试实现以下方法,而不是OnNext
private void loadJSON() {
RequestInterface requestInterface = new Retrofit.Builder()
.baseUrl(BASE_URL)
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.addConverterFactory(GsonConverterFactory.create())
.build().create(RequestInterface.class);
mCompositeDisposable.add(requestInterface.register()
.observeOn(AndroidSchedulers.mainThread())
.subscribeOn(Schedulers.io())
.subscribe(this::handleResponse,this::handleError));
}
private void handleResponse(List<Android> androidList) {
mAndroidArrayList = new ArrayList<>(androidList);
mAdapter = new DataAdapter(mAndroidArrayList);
mRecyclerView.setAdapter(mAdapter);
}
private void loadJSON(){
RequestInterface RequestInterface=new reformation.Builder()
.baseUrl(基本URL)
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.addConverterFactory(GsonConverterFactory.create())
.build().create(RequestInterface.class);
mCompositeDisposable.add(requestInterface.register())
.observeOn(AndroidSchedulers.mainThread())
.subscribeOn(Schedulers.io())
.subscribe(this::handleResponse,this::handleError));
}
private void handleResponse(List我猜您正在尝试从另一个线程使用recycler视图及其适配器进行操作。只需尝试在订阅(Schedulers.io())之后的Rx链中添加方法observeOn(AndroidSchedulers.mainThread())
另外,从onNext()
中删除以下行:
adapter = new UserAdapter(bioData, getApplicationContext());
recycle.setAdapter(adapter);
请先初始化您的适配器(当您初始化回收器视图时),并传递内部适配器空列表,然后将此先前初始化的适配器设置为回收器视图。然后,在内部onNext()
将从服务器获取的列表设置为适配器,并调用适配器。notifyDataSetChanged()
下面是您可以看到的代码示例:
adapter = new UserAdapter(new ArrayList<BioData>(), getApplicationContext());
recycle = findViewById(R.id.recycle);
recycle.setHasFixedSize(true);
recycle.setLayoutManager(new LinearLayoutManager(this));
recycle.setAdapter(adapter);
...
当然,您需要在UserAdapter
中声明setData(List)
方法
希望有帮助!谢谢,兄弟,现在工作正常了,实际上我忘了添加observeOn()方法。@Digvijay不客气!如果有帮助,请将其标记为答案