今天给大家简单的封装一个现在比较流行的网络请求框架
第一步是导入我们所需要的依赖还需要在android {}闭包下添加一个
buildFeatures{
viewBinding true
}
implementation "io.reactivex.rxjava2:rxjava:2.2.6" // 必要rxjava依赖
implementation "io.reactivex.rxjava2:rxandroid:2.1.0" // 必要rxandrroid依赖，切线程时需要用到
implementation 'com.squareup.retrofit2:retrofit:2.8.1' // 必要retrofit依赖
implementation 'com.squareup.retrofit2:converter-gson:2.8.1' // 必要依赖，解析json字符所用
implementation 'com.squareup.okhttp3:logging-interceptor:4.9.0' //非必要依赖，log依赖，如果需要打印OkHttpLog需要添加
implementation 'com.squareup.retrofit2:adapter-rxjava2:2.5.0' // 必要依赖，和rxjava结合必须用到
implementation 'com.google.dagger:hilt-android:2.40.1'
annotationProcessor 'com.google.dagger:hilt-compiler:2.40.1'
然后在app下的build.gradle中添加
apply plugin: 'dagger.hilt.android.plugin'
在项目的build.gradle中添加
repositories {
google()
mavenCentral()
}
dependencies {
classpath 'com.google.dagger:hilt-android-gradle-plugin:2.40.1'
}
allprojects {
repositories {
google()
mavenCentral()
jcenter() // Warning: this repository is going to shut down soon
}
}
第二步，创建一个network包，然后在包下创建一个NetWorkcarrier 用来先做一个简单的OkHttp+Retrofit的封装
package com.ghn.networkdemo.network;
import com.ghn.networkdemo.utils.Log;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.util.concurrent.TimeUnit;
import javax.net.ssl.TrustManager;
import okhttp3.OkHttpClient;
import okhttp3.logging.HttpLoggingInterceptor;
import retrofit2.Retrofit;
import retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory;
import retrofit2.converter.gson.GsonConverterFactory;
/**
* @author 浩楠
* @date 2022/8/5
*
* _ _ _ _ ____ _ _ _
* / \ _ __ __| |_ __ ___ (_) __| | / ___|| |_ _ _ __| (_) ___
* / _ \ | '_ \ / _` | '__/ _ \| |/ _` | \___ \| __| | | |/ _` | |/ _ \
* / ___ \| | | | (_| | | | (_) | | (_| | ___) | |_| |_| | (_| | | (_) |
* /_/ \_\_| |_|\__,_|_| \___/|_|\__,_| |____/ \__|\__,_|\__,_|_|\___/
*/
public class NetWorkcarrier {
private static volatile NetWorkcarrier instances;
private static volatile OkHttpClient okHttpClient;
private static volatile Retrofit retrofit;
/**
* 单例
* @return
*/
public static NetWorkcarrier getInstance() {
if (instances == null) {
synchronized (NetWorkcarrier.class) {
if (instances == null) {
instances = new NetWorkcarrier();
}
}
}
return instances;
}
private static int TIME_OUT = 30; //30秒超时断开连接
private OkHttpClient initClient() {
if (okHttpClient == null) {
synchronized (NetWorkcarrier.class) {
if (okHttpClient == null) {
//请求日志打印
HttpLoggingInterceptor loggingInterceptor = new HttpLoggingInterceptor(message -> {
try {
Log.e(URLDecoder.decode(message, "utf-8"));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
Log.e(message);
}
});
loggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
/**
* 创建OkHttpClient对象，构建一个网络类型的实例，一般会将所有的网络请求使用同一个单例对象。(如果OkHttpClient使用默认，可不设置)
*/
okHttpClient = new OkHttpClient.Builder()
.sslSocketFactory(new NetworkSSL(TrustManager.trustAllCert), TrustManager.trustAllCert)
.connectTimeout(TIME_OUT, TimeUnit.SECONDS)
.addInterceptor(loggingInterceptor)
.readTimeout(TIME_OUT, TimeUnit.SECONDS)
.writeTimeout(TIME_OUT, TimeUnit.SECONDS)
.build();
}
}
}
return okHttpClient;
}
public Retrofit initRetrofit() {
if (retrofit == null) {
synchronized (NetWorkcarrier.class) {
if (retrofit == null) {
/**
* 创建Retrofit对象,构建一个网络请求的载体对象，在build的时候有非常多的初始化内容，如设置OkHttpClient、设置请求的url，添加数据转换器等。
*/
retrofit = new Retrofit.Builder()
.client(initClient())//选填
.baseUrl(Api.BASE_URL)//必填
.addConverterFactory(GsonConverterFactory.create())//选填(数据转换器，解析)
.build();
}
}
}
return retrofit;
}
public Retrofit initRetrofitRxJava() {
if (retrofit == null) {
synchronized (NetWorkcarrier.class) {
if (retrofit == null) {
//注释2：设置Retrofit
retrofit = new Retrofit.Builder()
.client(initClient())//选填
.baseUrl(Api.BASE_URL)//必填
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())//新增网络请求适配器
.addConverterFactory(GsonConverterFactory.create())//选填(数据转换器，解析)
.build();
}
}
}
return retrofit;
}
}
这个时候你的代码应该会有三个错误，第一个是Log的错误，另一个是api的错误 、最后一个是NetworkSSL，是因为你还没有我们的代码中对应的类
这个是后你得再创建一个utils包创建一个Log类然后
package com.ghn.networkdemo.utils;
/**
* @author 浩楠
* @date 2022/8/5
*
* _ _ _ _ ____ _ _ _
* / \ _ __ __| |_ __ ___ (_) __| | / ___|| |_ _ _ __| (_) ___
* / _ \ | '_ \ / _` | '__/ _ \| |/ _` | \___ \| __| | | |/ _` | |/ _ \
* / ___ \| | | | (_| | | | (_) | | (_| | ___) | |_| |_| | (_| | | (_) |
* /_/ \_\_| |_|\__,_|_| \___/|_|\__,_| |____/ \__|\__,_|\__,_|_|\___/
*/
public class Log {
public static final String TAG_START = "-sc-";
private Log() {
/* cannot be instantiated */
throw new UnsupportedOperationException("cannot be instantiated");
}
public static void e(Class cla, String msg) {
e(cla.getSimpleName(), msg);
}
public static void e(String msg) {
android.util.Log.e(TAG_START, msg + "");
}
public static void e(String tag, String msg) {
android.util.Log.e(TAG_START + tag, msg + "");
}
}
然后在我们的network中创建一个api包和在包里创建一个Api的接口类，不过在创建这个Api接口类之前我们要先创建一个统一的接口后台返回的结果的类，然后在network中创建一个data的包，包下创建一个ResponseData类，里面写我们的统一返回的的数据，这个是和后端的接口是保持一至的
package com.ghn.networkdemo.data;
/**
* @author 浩楠
* @date 2022/8/5
*
* _ _ _ _ ____ _ _ _
* / \ _ __ __| |_ __ ___ (_) __| | / ___|| |_ _ _ __| (_) ___
* / _ \ | '_ \ / _` | '__/ _ \| |/ _` | \___ \| __| | | |/ _` | |/ _ \
* / ___ \| | | | (_| | | | (_) | | (_| | ___) | |_| |_| | (_| | | (_) |
* /_/ \_\_| |_|\__,_|_| \___/|_|\__,_| |____/ \__|\__,_|\__,_|_|\___/
*统一接收后台返回的数据
*/
public class ResponseData
private int errorCode;
private String errorMsg;
private T data;
public int getErrorCode() {
return errorCode;
}
public void setErrorCode(int errorCode) {
this.errorCode = errorCode;
}
public String getErrorMsg() {
return errorMsg;
}
public void setErrorMsg(String errorMsg) {
this.errorMsg = errorMsg;
}
public T getData() {
return data;
}
public void setData(T data) {
this.data = data;
}
}
package com.ghn.networkdemo.Api;
import com.ghn.networkdemo.bean.BannerBean;
import com.ghn.networkdemo.data.ResponseData;
import java.util.List;
import retrofit2.Call;
import retrofit2.http.GET;
/**
* @author 浩楠
* @date 2022/8/5
*
* _ _ _ _ ____ _ _ _
* / \ _ __ __| |_ __ ___ (_) __| | / ___|| |_ _ _ __| (_) ___
* / _ \ | '_ \ / _` | '__/ _ \| |/ _` | \___ \| __| | | |/ _` | |/ _ \
* / ___ \| | | | (_| | | | (_) | | (_| | ___) | |_| |_| | (_| | | (_) |
* /_/ \_\_| |_|\__,_|_| \___/|_|\__,_| |____/ \__|\__,_|\__,_|_|\___/
*/
public interface Api {
String BASE_URL = "https://www.wanandroid.com/";
//OkHttp+Retrofit
@GET("banner/json")
Call
}
然后再来创建一个NetworkSSL的类和TrustManager的类和我们的NetworkModule类
package com.ghn.networkdemo.network;
import android.os.Build;
import java.io.IOException;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
import java.security.GeneralSecurityException;
import java.util.Arrays;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.X509TrustManager;
/**
* @author 浩楠
* @date 2022/8/5
*
* _ _ _ _ ____ _ _ _
* / \ _ __ __| |_ __ ___ (_) __| | / ___|| |_ _ _ __| (_) ___
* / _ \ | '_ \ / _` | '__/ _ \| |/ _` | \___ \| __| | | |/ _` | |/ _ \
* / ___ \| | | | (_| | | | (_) | | (_| | ___) | |_| |_| | (_| | | (_) |
* /_/ \_\_| |_|\__,_|_| \___/|_|\__,_| |____/ \__|\__,_|\__,_|_|\___/
*/
public class NetworkSSL extends SSLSocketFactory {
private SSLSocketFactory defaultFactory;
static String protocols[] = null, cipherSuites[] = null;
static {
try {
SSLSocket socket = (SSLSocket) SSLSocketFactory.getDefault().createSocket();
if (socket != null) {
List
for (String protocol : socket.getSupportedProtocols())
if (!protocol.toUpperCase().contains("SSL"))
protocols.add(protocol);
NetworkSSL.protocols = protocols.toArray(new String[protocols.size()]);
/* set up reasonable cipher suites */
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
// choose known secure cipher suites
List
// TLS 1.2
"TLS_RSA_WITH_AES_256_GCM_SHA384",
"TLS_RSA_WITH_AES_128_GCM_SHA256",
"TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256",
"TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
"TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
"TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256",
"TLS_ECHDE_RSA_WITH_AES_128_GCM_SHA256",
// maximum interoperability
"TLS_RSA_WITH_3DES_EDE_CBC_SHA",
"TLS_RSA_WITH_AES_128_CBC_SHA",
// additionally
"TLS_RSA_WITH_AES_256_CBC_SHA",
"TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA",
"TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA",
"TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA",
"TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA");
List
HashSet
preferredCiphers.retainAll(availableCiphers);
HashSet
enabledCiphers.addAll(new HashSet<>(Arrays.asList(socket.getEnabledCipherSuites())));
NetworkSSL.cipherSuites = enabledCiphers.toArray(new String[enabledCiphers.size()]);
}
}
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public NetworkSSL(X509TrustManager tm) {
try {
SSLContext sslContext = SSLContext.getInstance("TLS");
sslContext.init(null, (tm != null) ? new X509TrustManager[]{tm} : null, null);
defaultFactory = sslContext.getSocketFactory();
} catch (GeneralSecurityException e) {
throw new AssertionError(); // The system has no TLS. Just give up.
}
}
private void upgradeTLS(SSLSocket ssl) {
if (protocols != null) {
ssl.setEnabledProtocols(protocols);
}
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP && cipherSuites != null) {
ssl.setEnabledCipherSuites(cipherSuites);
}
}
@Override
public String[] getDefaultCipherSuites() {
return cipherSuites;
}
@Override
public String[] getSupportedCipherSuites() {
return cipherSuites;
}
@Override
public Socket createSocket(Socket s, String host, int port, boolean autoClose) throws IOException {
Socket ssl = defaultFactory.createSocket(s, host, port, autoClose);
if (ssl instanceof SSLSocket) {
upgradeTLS((SSLSocket) ssl);
}
return ssl;
}
@Override
public Socket createSocket(String host, int port) throws IOException, UnknownHostException {
Socket ssl = defaultFactory.createSocket(host, port);
if (ssl instanceof SSLSocket) {
upgradeTLS((SSLSocket) ssl);
}
return ssl;
}
@Override
public Socket createSocket(String host, int port, InetAddress localHost, int localPort) throws IOException, UnknownHostException {
Socket ssl = defaultFactory.createSocket(host, port, localHost, localPort);
if (ssl instanceof SSLSocket) {
upgradeTLS((SSLSocket) ssl);
}
return ssl;
}
@Override
public Socket createSocket(InetAddress host, int port) throws IOException {
Socket ssl = defaultFactory.createSocket(host, port);
if (ssl instanceof SSLSocket) {
upgradeTLS((SSLSocket) ssl);
}
return ssl;
}
@Override
public Socket createSocket(InetAddress address, int port, InetAddress localAddress, int localPort) throws IOException {
Socket ssl = defaultFactory.createSocket(address, port, localAddress, localPort);
if (ssl instanceof SSLSocket) {
upgradeTLS((SSLSocket) ssl);
}
return ssl;
}
}
package com.ghn.networkdemo.network;
import java.security.cert.CertificateException;
import javax.net.ssl.X509TrustManager;
/**
* @author 浩楠
* @date 2022/8/510:56.
*
* _ _ _ _ ____ _ _ _
* / \ _ __ __| |_ __ ___ (_) __| | / ___|| |_ _ _ __| (_) ___
* / _ \ | '_ \ / _` | '__/ _ \| |/ _` | \___ \| __| | | |/ _` | |/ _ \
* / ___ \| | | | (_| | | | (_) | | (_| | ___) | |_| |_| | (_| | | (_) |
* /_/ \_\_| |_|\__,_|_| \___/|_|\__,_| |____/ \__|\__,_|\__,_|_|\___/
*/
public class TrustManager {
public static X509TrustManager trustAllCert = new X509TrustManager() {
@Override
public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
}
@Override
public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
}
@Override
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return new java.security.cert.X509Certificate[]{};
}
};
}
package com.ghn.networkdemo.network;
import com.ghn.networkdemo.network.Api.Api;
import com.ghn.networkdemo.utils.Log;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.util.concurrent.TimeUnit;
import javax.inject.Singleton;
import dagger.Module;
import dagger.Provides;
import dagger.hilt.InstallIn;
import dagger.hilt.components.SingletonComponent;
import okhttp3.OkHttpClient;
import okhttp3.logging.HttpLoggingInterceptor;
import retrofit2.Retrofit;
import retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory;
import retrofit2.converter.gson.GsonConverterFactory;
/**
* @author 浩楠
* @date 2022/8/5
*
* _ _ _ _ ____ _ _ _
* / \ _ __ __| |_ __ ___ (_) __| | / ___|| |_ _ _ __| (_) ___
* / _ \ | '_ \ / _` | '__/ _ \| |/ _` | \___ \| __| | | |/ _` | |/ _ \
* / ___ \| | | | (_| | | | (_) | | (_| | ___) | |_| |_| | (_| | | (_) |
* /_/ \_\_| |_|\__,_|_| \___/|_|\__,_| |____/ \__|\__,_|\__,_|_|\___/
*
*/
@InstallIn(SingletonComponent.class)
@Module
public class NetworkModule {
private static int TIME_OUT = 30; //30秒超时断开连接
@Provides
@Singleton
public OkHttpClient providesOkHttpClient(){
HttpLoggingInterceptor loggingInterceptor = new HttpLoggingInterceptor(new HttpLoggingInterceptor.Logger() {
@Override
public void log(String message) {
try {
Log.e("--network--", URLDecoder.decode(message, "utf-8"));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
Log.e("--network--", message);
}
}
});
loggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
return new OkHttpClient.Builder()
.sslSocketFactory(new NetworkSSL(TrustManager.trustAllCert), TrustManager.trustAllCert)
.connectTimeout(TIME_OUT, TimeUnit.SECONDS)
.addInterceptor(loggingInterceptor)
.readTimeout(TIME_OUT, TimeUnit.SECONDS)
.writeTimeout(TIME_OUT, TimeUnit.SECONDS)
.build();
}
@Singleton
@Provides
public Retrofit providesRetrofit(OkHttpClient okHttpClient){
return new Retrofit.Builder()
.client(okHttpClient)
.baseUrl(Api.BASE_URL)
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.addConverterFactory(GsonConverterFactory.create())
.build();
}
@Singleton
@Provides
public Api providesWanAndroidService(Retrofit retrofit){
return retrofit.create(Api.class);
}
}
第三步：创建一个统一异常处理的类ApiException和ErrorConsumer 类
package com.ghn.networkdemo.network;
import android.net.ParseException;
import com.google.gson.JsonParseException;
import org.json.JSONException;
import java.net.ConnectException;
import java.net.SocketTimeoutException;
import java.net.UnknownHostException;
/**
* @author 浩楠
* @date 2022/8/5
*
* _ _ _ _ ____ _ _ _
* / \ _ __ __| |_ __ ___ (_) __| | / ___|| |_ _ _ __| (_) ___
* / _ \ | '_ \ / _` | '__/ _ \| |/ _` | \___ \| __| | | |/ _` | |/ _ \
* / ___ \| | | | (_| | | | (_) | | (_| | ___) | |_| |_| | (_| | | (_) |
* /_/ \_\_| |_|\__,_|_| \___/|_|\__,_| |____/ \__|\__,_|\__,_|_|\___/
* 统一的异常处理
*/
public class ApiException extends Exception{
public static final int UNKNOWN = 1000;
public static final int PARSE_ERROR = 1001;
public static final int NETWORK_ERROR = 1002;
private int code;
private String displayMessage;
public ApiException(int code, String displayMessage) {
this.code = code;
this.displayMessage = displayMessage;
}
public int getCode() {
return code;
}
public void setCode(int code) {
this.code = code;
}
public String getDisplayMessage() {
return displayMessage;
}
public void setDisplayMessage(String displayMessage) {
this.displayMessage = displayMessage;
}
public static ApiException handleException(Throwable e) {
ApiException ex;
if (e instanceof JsonParseException
|| e instanceof JSONException
|| e instanceof ParseException) {
//解析错误
ex = new ApiException(PARSE_ERROR, e.getMessage());
return ex;
} else if (e instanceof ConnectException) {
//网络错误
ex = new ApiException(NETWORK_ERROR, e.getMessage());
return ex;
} else if (e instanceof UnknownHostException || e instanceof SocketTimeoutException) {
//连接错误
ex = new ApiException(NETWORK_ERROR, e.getMessage());
return ex;
} else {
//未知错误
ex = new ApiException(UNKNOWN, e.getMessage());
return ex;
}
}
}
package com.ghn.networkdemo.network;
import org.jetbrains.annotations.NotNull;
import io.reactivex.functions.Consumer;
/**
* @author 浩楠
* @date 2022/8/5
*
* _ _ _ _ ____ _ _ _
* / \ _ __ __| |_ __ ___ (_) __| | / ___|| |_ _ _ __| (_) ___
* / _ \ | '_ \ / _` | '__/ _ \| |/ _` | \___ \| __| | | |/ _` | |/ _ \
* / ___ \| | | | (_| | | | (_) | | (_| | ___) | |_| |_| | (_| | | (_) |
* /_/ \_\_| |_|\__,_|_| \___/|_|\__,_| |____/ \__|\__,_|\__,_|_|\___/
*统一的异常处理实现Consumer
*/
public abstract class ErrorConsumer implements Consumer
@Override
public void accept(@NotNull Throwable throwable) throws Exception {
//对异常进行处理
ApiException exception;
if (throwable instanceof ApiException) {
exception = (ApiException) throwable;
} else {
exception = ApiException.handleException(throwable);
}
//调用error方法
error(exception);
}
//使用时实现error方法即可。
protected abstract void error(ApiException e);
}
第四步：对响应进行转换处理
package com.ghn.networkdemo.network;
import com.ghn.networkdemo.data.ResponseData;
import org.jetbrains.annotations.NotNull;
import io.reactivex.Observable;
import io.reactivex.ObservableSource;
import io.reactivex.ObservableTransformer;
import io.reactivex.android.schedulers.AndroidSchedulers;
import io.reactivex.functions.Function;
import io.reactivex.schedulers.Schedulers;
/**
* @author 浩楠
* @date 2022/8/5
*
* _ _ _ _ ____ _ _ _
* / \ _ __ __| |_ __ ___ (_) __| | / ___|| |_ _ _ __| (_) ___
* / _ \ | '_ \ / _` | '__/ _ \| |/ _` | \___ \| __| | | |/ _` | |/ _ \
* / ___ \| | | | (_| | | | (_) | | (_| | ___) | |_| |_| | (_| | | (_) |
* /_/ \_\_| |_|\__,_|_| \___/|_|\__,_| |____/ \__|\__,_|\__,_|_|\___/
*/
public class ResponseTransformer
public ResponseTransformer() {
}
public static
return new ResponseTransformer<>();
}
@NotNull
@Override
public ObservableSource
return upstream.onErrorResumeNext(new Function
@Override
public ObservableSource> apply(@NotNull Throwable throwable) throws Exception {
return Observable.error(ApiException.handleException(throwable));
}
}).flatMap(new Function
@Override
public ObservableSource
//请求成功
if (0 == responseData.getErrorCode()) {
return Observable.just(responseData.getData());
}
//请求异常
return Observable.error(new ApiException(responseData.getErrorCode(), responseData.getErrorMsg()));
}
}).subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread());
}
}
第五步：对Hilt进行添加，我们需要对我们的Application添加一个@HiltAndroidApp 的注解,所以我们要在主包下面创建一个app类才继承我们的Application添加注解并且在我们的清单文件中的name中添加我们新建的app类
package com.ghn.networkdemo;
import android.app.Application;
import dagger.hilt.android.HiltAndroidApp;
/**
* @author 浩楠
* @date 2022/8/5
*
* _ _ _ _ ____ _ _ _
* / \ _ __ __| |_ __ ___ (_) __| | / ___|| |_ _ _ __| (_) ___
* / _ \ | '_ \ / _` | '__/ _ \| |/ _` | \___ \| __| | | |/ _` | |/ _ \
* / ___ \| | | | (_| | | | (_) | | (_| | ___) | |_| |_| | (_| | | (_) |
* /_/ \_\_| |_|\__,_|_| \___/|_|\__,_| |____/ \__|\__,_|\__,_|_|\___/
*/
@HiltAndroidApp
public class App extends Application { }
android:name=".App" android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/Theme.AndroidDemo"> 最后我们来使用一下我们的这个网络请求 因为我们的接口是banner的接口，我们就不写轮播图了就写一个textview展示一下我们的网络请求的数据就好， package com.ghn.networkdemo; import androidx.appcompat.app.AppCompatActivity; import android.content.Context; import android.os.Bundle; import android.widget.ImageView; import android.widget.TextView; import com.bumptech.glide.Glide; import com.ghn.networkdemo.data.ResponseData; import com.ghn.networkdemo.databinding.ActivityMainBinding; import com.ghn.networkdemo.network.Api.Api; import com.ghn.networkdemo.network.ApiException; import com.ghn.networkdemo.network.ErrorConsumer; import com.ghn.networkdemo.network.NetWorkcarrier; import com.ghn.networkdemo.network.ResponseTransformer; import com.ghn.networkdemo.network.bean.BannerBean; import com.ghn.networkdemo.utils.Log; import com.youth.banner.Banner; import com.youth.banner.adapter.BannerImageAdapter; import java.util.ArrayList; import java.util.List; import javax.inject.Inject; import dagger.hilt.android.AndroidEntryPoint; import io.reactivex.Observable; import io.reactivex.functions.Consumer; import retrofit2.Call; import retrofit2.Callback; import retrofit2.Response; @AndroidEntryPoint public class MainActivity extends AppCompatActivity { ActivityMainBinding binding; private TextView text; @Inject Api api; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); binding = ActivityMainBinding.inflate(getLayoutInflater()); setContentView(binding.getRoot()); text = findViewById(R.id.text_view); initData(); } private void initData() { api.BannerRetrofit() .compose(ResponseTransformer.obtain()) .subscribe(new Consumer @Override public void accept(List //请求成功 if (homeBanners != null) { text.setText(homeBanners.toString()); } } }, new ErrorConsumer() { @Override protected void error(ApiException e) { //请求失败 Log.e(e.getDisplayMessage() + e.getCode()); } }); } } xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity"> android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/text_view" android:layout_margin="20dp" /> 最终效果 源码地址 文章来源
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