public class OkHttpUtils {
private static OkHttpUtils okHttpUtils;
private final Gson gson;
private final Handler handler;
private final OkHttpClient okHttpClient;
OkHttpUtils() {
gson = new Gson();
handler = new Handler(Looper.getMainLooper());
okHttpClient = new OkHttpClient();
}
public static OkHttpUtils getInstance() {
if (okHttpUtils == null) {
synchronized (OkHttpUtils.class) {
if (okHttpUtils == null) {
okHttpUtils = new OkHttpUtils();
}
}
}
return okHttpUtils;
}
public <T> void getRequest(String url, final Class<T> bean, final RequestJsonBeanCallBack<T> callBack) {
//实例化Request
Request request = new Request.Builder().url(url).build();
okHttpClient.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Request request, IOException e) {
handler.post(new Runnable() {
@Override
public void run() {
callBack.error();
}
});
}
@Override
public void onResponse(Response response) throws IOException {
String s=response.body().string();
final T result=gson.fromJson(s,bean);
handler.post(new Runnable() {
@Override
public void run() {
callBack.success(result);
}
});
}
});
}
/**
* post请求
*
* @param url 请求的Url
* @param callBack 回调借口 OkHttp默认为子线程已更换为主线程 可在回调的方法中直接更新UI
* @param param 参数对象
* @param <T> Bean类型
*/
public <T> void postRequest(String url, final Class<T> bean,
final RequestJsonBeanCallBack<T> callBack, Param... param) {
//调用自定义封装方法 该方法将请求参数封装到Request对象中 并返回
Request request = builderPostRequest(url, param);
okHttpClient.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Request request, IOException e) {
handler.post(new Runnable() {
@Override
public void run() {
callBack.error();
}
});
}
@Override
public void onResponse(Response response) throws IOException {
String s=response.body().string();
final T result=gson.fromJson(s,bean);
handler.post(new Runnable() {
@Override
public void run() {
callBack.success(result);
}
});
}
});
}
/**
* @param url 请求的Url
* @param params post请求的参数 存储在对象中
* @return 封装好的Request对象
*/
private Request builderPostRequest(String url, Param[] params) {
//实例化FormEncodingBuilder对象
FormEncodingBuilder builder = new FormEncodingBuilder();
//对请求参数进行判空
if (params == null) {
params = new Param[0];
}
for (Param param : params) {
builder.add(param.key, param.value);
}
RequestBody requestBody = builder.build();
//创建Request对象
Request request = new Request.Builder()
.url(url)
.post(requestBody)
.build();
return request;
}
public interface RequestJsonBeanCallBack<T> {
void success(T result);
void error();
}
//自定义存储类 存储类型为键值对 用于Post请求
public static class Param {
public String key;
public String value;
public Param() {
}
public Param(String key, String value) {
this.key = key;
this.value = value;
}
}
}
/*
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:23.0.0'
testCompile 'junit:junit:4.12'
compile 'com.squareup.okhttp3:okhttp:3.2.0'
compile 'com.squareup.okio:okio:1.7.0'
compile 'com.google.code.gson:gson:2.8.0'
compile 'com.squareup.okhttp3:logging-interceptor:3.5.0'
compile 'com.android.support:recyclerview-v7:23.0.0'
compile 'com.github.bumptech.glide:glide:3.7.0'
compile 'com.squareup.okhttp:okhttp:2.4.0'
}
*/
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