Retrofit入门到完全封装
如果你对RxJava不熟悉请先看给 Android 开发者的 RxJava 详解这篇文章。
如果你对Retrofit不熟悉就先看Retrofit官网。
当然也有很多RxJava与Retrofit的文章，但是我觉得很多大家都很纠结的功能都没有被总结出来，而且使用起来总会遇到这样那样的问题。我这里的代码可以直接拷贝应用到项目中去。
配置文件
app build.gradle文件
implementation 'com.squareup.okhttp3:okhttp:3.6.0'//导入okhttp因为retrofit网络请求还是okhttp,retrofit本身只是okhttp的封装而已
implementation 'com.squareup.retrofit2:retrofit:2.3.0'//导入retrofit
implementation 'com.squareup.retrofit2:adapter-rxjava:2.3.0'//导入rxjava
implementation 'io.reactivex:rxandroid:1.1.0'
implementation 'com.squareup.retrofit2:converter-gson:2.0.0-beta3'//gson解析
implementation 'com.squareup.retrofit2:converter-scalars:2.0.0' //导入scalars包为了让请求放回字符串
implementation 'com.squareup.okhttp3:logging-interceptor:3.4.1' //拦截器，可以拦截okhttp，比如操作请求头，header里面添加参数
AndroidMainfest.xml文件
<!-- 网络权限 -->
<uses-permission android:name="android.permission.INTERNET" />
<!-- 网络状态权限 -->
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
public interface GetAppList {
@GET("/jj")
Call<String> get(@Query("count") int count);
@FormUrlEncoded
@POST("/Index/filter")
Call<String> postList(@Field("sign") String sign,
@Field("interfaceVersion") String interfaceVersion,
@Field("seo") String seo,
@Field("noncestr") String noncestr,
@Field("timestamp") String timestamp,
@Field("sbID") String sbID); @FormUrlEncoded
@POST("/Index/filter")
Call<TypeInfo> postBeanList(@Field("sign") String sign,
@Field("interfaceVersion") String interfaceVersion,
@Field("seo") String seo,
@Field("noncestr") String noncestr,
@Field("timestamp") String timestamp,
@Field("sbID") String sbID);
@FormUrlEncoded
@POST("/Index/filter")
Observable<TypeInfo> postBeanRxjavaList(@Field("sign") String sign,
@Field("interfaceVersion") String interfaceVersion,
@Field("seo") String seo,
@Field("noncestr") String noncestr,
@Field("timestamp") String timestamp,
@Field("sbID") String sbID);
@FormUrlEncoded
@POST("/Index/filter")
Observable<HttpResult<DataTypeBean>> postBeanRxjavaUtilsList(@Field("sign") String sign,
@Field("interfaceVersion") String interfaceVersion,
@Field("seo") String seo,
@Field("noncestr") String noncestr,
@Field("timestamp") String timestamp,
@Field("sbID") String sbID);
}
普通get请求，以字符串返回
//普通get请求，以字符串返回
private void get() {
//拼装接口
Retrofit retrofit = new Retrofit.Builder()
//这里我需要返回的是String ,所以导入这个类
.addConverterFactory(ScalarsConverterFactory.create())
//设置网络请求的 Base Url地址
.baseUrl("https://www.baidu.com/")
//设置数据解析器
.build();
// 创建 网络请求接口 的实例
GetAppList request = retrofit.create(GetAppList.class);
//创建请求，传入参数
Call<String> call = request.get(88);
//异步请求
call.enqueue(new Callback<String>() {
@Override
public void onResponse(Call<String> call, Response<String> response) {
Log.e("retrefit", "onResponse= " + response.body().toString());
}
@Override
public void onFailure(Call<String> call, Throwable t) {
Log.e("retrefit", "onFailure= " + t.toString());
}
});
}
post普通请求返回字符串
//普通post请求，以字符串返回
private void post() {
//拼装接口
Retrofit retrofit = new Retrofit.Builder()
//这里我需要返回的是String ,所以导入这个类
.addConverterFactory(ScalarsConverterFactory.create())
//设置网络请求的 Base Url地址
.baseUrl("http://skyollie.com")
//设置数据解析器
.build();
// 创建 网络请求接口 的实例
GetAppList request = retrofit.create(GetAppList.class);
//创建请求，传入参数
Call<String> call = request.postList("16d5e1a960a59a704b4b5d27789887bc2be1571d",
"48",
"tvdrama",
"1e9cc0a8-6e90-455b-8550-23180e88b450&devicetype=0",
"1551167029117",
"id9be4eb13-668b-4e1a-84de-288a7785d24d");
//异步请求
call.enqueue(new Callback<String>() {
@Override
public void onResponse(Call<String> call, Response<String> response) {
Log.e("retrefit", "onResponse= " + response.body().toString());
}
@Override
public void onFailure(Call<String> call, Throwable t) {
Log.e("retrefit", "onFailure= " + t.toString());
}
});
}
post使用Gson返回对象
//普通post请求，使用Gson返回
private void postBean() {
//拼装接口
Retrofit retrofit = new Retrofit.Builder()
//这里我需要返回的是String ,所以导入这个类
.addConverterFactory(GsonConverterFactory.create())
//设置网络请求的 Base Url地址
.baseUrl("http://skyollie.com")
//设置数据解析器
.build();
// 创建 网络请求接口 的实例
GetAppList request = retrofit.create(GetAppList.class);
//创建请求，传入参数
Call<TypeInfo> call = request.postBeanList("16d5e1a960a59a704b4b5d27789887bc2be1571d",
"48",
"tvdrama",
"1e9cc0a8-6e90-455b-8550-23180e88b450&devicetype=0",
"1551167029117",
"id9be4eb13-668b-4e1a-84de-288a7785d24d");
//异步请求
call.enqueue(new Callback<TypeInfo>() {
@Override
public void onResponse(Call<TypeInfo> call, Response<TypeInfo> response) {
Log.e("retrefit", "onResponse= " + response.body().getMsg());
}
@Override
public void onFailure(Call<TypeInfo> call, Throwable t) {
Log.e("retrefit", "onFailure= " + t.toString());
}
});
}
post使用Gson并结合Rxjava返回对象
//普通post请求，使用Gson返回
private void postBeanRxjava() {
//拼装接口
Retrofit retrofit = new Retrofit.Builder()
//这里我需要返回的是String ,所以导入这个类
.addConverterFactory(GsonConverterFactory.create())
//设置RXjava
.addCallAdapterFactory(RxJavaCallAdapterFactory.create())
//设置网络请求的 Base Url地址
.baseUrl("http://skyollie.com")
//设置数据解析器
.build();
// 创建 网络请求接口 的实例
GetAppList request = retrofit.create(GetAppList.class);
//创建请求，传入参数
request.postBeanRxjavaList("16d5e1a960a59a704b4b5d27789887bc2be1571d",
"48",
"tvdrama",
"1e9cc0a8-6e90-455b-8550-23180e88b450&devicetype=0",
"1551167029117",
"id9be4eb13-668b-4e1a-84de-288a7785d24d")
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Subscriber<TypeInfo>() {
@Override
public void onCompleted() {
}
@Override
public void onError(Throwable e) {
}
@Override
public void onNext(TypeInfo typeInfo) {
Log.e("retrefit", "onNext= " + typeInfo.toString());
}
});
}
post使用Gson并结合Rxjava并封装返回对象
//封装了Retrofit
private void postUtils() {
Subscriber<TypeInfo> subscriber = new Subscriber<TypeInfo>() {
@Override
public void onCompleted() {
Toast.makeText(MainActivity.this, "Get Top Movie Completed", Toast.LENGTH_SHORT).show();
}
@Override
public void onError(Throwable e) {
// resultTV.setText(e.getMessage());
}
@Override
public void onNext(TypeInfo typeInfo) {
Log.e("postUtils", "onNext= " + typeInfo.toString());
}
};
HttpMethods.getInstance().postUtils(subscriber);
}
//retrofit简单封装
class HttpMethods {
public static final String BASE_URL = "http://skyollie.com";
private static final int DEFAULT_TIMEOUT = 5;
public Retrofit retrofit;
private GetAppList getAppList;
//构造方法私有
private HttpMethods() {
//手动创建一个OkHttpClient并设置超时时间
OkHttpClient.Builder httpClientBuilder = new OkHttpClient.Builder();
httpClientBuilder.connectTimeout(DEFAULT_TIMEOUT, TimeUnit.SECONDS);
retrofit = new Retrofit.Builder()
.client(httpClientBuilder.build())
.addConverterFactory(GsonConverterFactory.create())
.addCallAdapterFactory(RxJavaCallAdapterFactory.create())
.baseUrl(BASE_URL)
.build();
getAppList = retrofit.create(GetAppList.class);
}
//在访问HttpMethods时创建单例
public static class SingletonHolder {
private static final HttpMethods INSTANCE = new HttpMethods();
}
//获取单例
public static HttpMethods getInstance() {
return SingletonHolder.INSTANCE;
}
public void postUtils(Subscriber<TypeInfo> subscriber) {
getAppList.postBeanRxjavaList("16d5e1a960a59a704b4b5d27789887bc2be1571d",
"48",
"tvdrama",
"1e9cc0a8-6e90-455b-8550-23180e88b450&devicetype=0",
"1551167029117",
"id9be4eb13-668b-4e1a-84de-288a7785d24d")
.subscribeOn(Schedulers.io())
.unsubscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(subscriber);
}
}
终极封装返回统一对象
//全局统一封装
private void postUtilsResult() {
HttpMethods2.getInstance().getTopMovie(new ProgressSubscriber(new SubscriberOnNextListener<DataTypeBean>() {
@Override
public void onNext(DataTypeBean subjects) {
Log.e("postUtilsResult","onNext"+subjects.getFilter().get(0).getType());
}
}, MainActivity.this));
}
