Android OkHttp的封装使用
1.先看原始的请求过程
以下是请求过程的使用示例。
private void useOkHttpSendRequest(){
OkHttpClient client = new OkHttpClient();
RequestBody body = new FormBody.Builder()
.add("InfoOne", mInfoOneEditText.getText().toString())
.add("InfoTwo", mInfoTwoEditText.getText().toString)
.build();
final Request request = new Request.Builder().url(UrlCons.YOUR_URL).post(body).build();
Call call = client.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e){
}
@Override
public void onResponse(Call call, Response response) throws IOException{
if (response.isSuccessful()) {
//This is in the sub-thread, we shuold transport the data to the main thread
String responseBody = response.body().string();
}
}
});
}没有封装的方法不好用。需要进行封装。
在APP中可以创建全局变量，使整个APP都用这个变量。参考：https://www.cnblogs.com/maoIT/p/3835833.html
如下：
此时对其进行封装，新建几个类。
//The class to deal with the OkHttpCallback
public abstract class OkHttpCallBack implements CallBack{
public abstract void onSuccess(final Call call, JSONObject jsonObject);
@Override
public void onResponse(Call call, Response response) throws IOException{
if (response != null) {
if (response.isSuccessful()) {
try{
String str = response.body().string().trim();
JSONObject object = (JSONObject)new JSONTokener(str).nextValue();
if (object != null) {
onSuccess(call, object);
}els{
onFailure(call, null);
}
}catch{
e.printStackTrace();
}
}else{
onFailure(call, null);
}
}
}
@Override
public void onFailure(Call call, IOException e){
}
}
//OkHttp Core Class
public class OkHttpUtil{
private static OkHttpClient mOkHttpClient = null;
//Call this method in the Application class. ---> onCreate() method.
//Thus we can get only one instance of httpClient in the whole app.
public static void init(){
if (mOkHttpClient == null) {
OkHttpClient.Builder builder = new OkHttpClient().newBuilder()
.connectTimeout(5000, TimeUnit.MILLISECOND)
.readTimeout(5000, TimeUnit.MILLISECOND)
.writeTimeout(5000, TimeUnit.MILLISECOND);
mOkHttpClient = builder.build();
}
}
//If GET method needs some other params, just need to add a HaspMap. Refer to:https://www.imooc.com/video/18685
public static void get(String url, OkHttpCallback okHttpCallback){
Call call = null;
try{
Request request = new Request.Builder().url(url).build();
call = mOkHttpClient.newCall(request);
call.enqueue(okHttpCallback);
}catch(IOException ex){
ex.printStackTrace();
}
}
public static void post(String url, OkHttpCallback okHttpCallback, HashMap bodyMap){
Call call = null;
try{
FormBody.Builder builder = new FormBody.Builder();
for (HashMap.Entry entry : bodyMap.entrySet()) {
builder.add(entry.getKey(), entry.getValue());
}
RequestBody body = builder.build();
Request request = new Request.Builder().post(body).url(url).build();
call = mOkHttpClient.newCall(request);
call.enqueue(okHttpCallback);
}catch(IOException ex){
ex.printStackTrace();
}
}
} public abstract class ApiUtil {
private ApiListener mApiListener = null;
private String mStatus;
private OkHttpCallback mSendListener = new OkHttpCallback(){
@Override
public void onSuccess(Call call, Response response){
mStatus = response.optString("status");
if (isSuccess()) {
try{
parseData(response);
mApiListener.success(ApiUtil.this);
}catch(IOException e){
e.printStackTrace();
}
}else{
mApiListener.failrure(ApiUtil.this);
}
}
@Override
public void onFailure(Call call, IOException e){
mApiListener.failrure(ApiUtil.this);
}
}
public boolean isSuccess(){
return "0".equals(mStatus) || "200".equals(mStatus);
}
protected abstract void parseData(JSONObject jsonObject) throws Exception;
protected abstract String getUrl();
//Send GET request
//Listener: Tell the app whether the GET reqeust is success.
private void get(ApiListener listener){
mApiListener = listener;
OkHttpUtil.get(getUrl(), mSendListener);
}
private HashMap mBodyMap = new HashMap<>();
public void addParams(String key, String value){
mBodyMap.put(key, value);
}
//Send POST request
//Listener: Tell the app whether the POST reqeust is success.
private void post(ApiListener listener){
mApiListener = listener;
OkHttpUtil.post(getUrl(), mSendListener, mBodyMap);
}
} public interface ApiListener {
//Request success
void succss(ApiUtil apiUtil);
//Request failed
void failrure(ApiUtil apiUtil);
}以下是测试GET的API
public class TestGetBookApi extends ApiUtil{
public String mResponse;
@Override
protected String getUrl(){
return Url.IP + "/api/v1/books";
}
protected void parseData(JSONObject jsonObject){
mResponse = jsonObject.toString();
}
}以下是POST的API
public class TestPostBookApi extends ApiUtil{
public String mResponse;
public TestGetBookApi(String bookName, String bookInfo){
addParams("bookName", bookName);
addParams("bookInfo", bookInfo);
}
@Override
protected String getUrl(){
return Url.IP + "/api/v1/books";
}
protected void parseData(JSONObject jsonObject){
mResponse = jsonObject.toString();
}
}
以下是在Activity中进行调用测试
//Use the api
public class TestActivity extends Activity{
private void processGetApi(){
new TestGetBookApi().get(new ApiListener() {
@Override
public void success(ApiUtil apiUtil){
TestGetBookApi api = (TestGetBookApi)apiUtil;
String response = api.mResponse;
parseResponse(response);
}
@Override void failrure(ApiUtil apiUtil){
}
});
};
//The parse the response
public void parseResponse(Response response){
}
private void processPostApi(){
new TestPostBookApi(mBookNameEdit.getText().toString(),
mBookInfoEdit.getText().toString()).post(new ApiListener(){
@Override
public void success(ApiUtil apiUtil){
Log.d(TAG, "---apiUtil = " + apiUtil);
}
@Override void failrure(ApiUtil apiUtil){
}
});
}
}详细博客参考来源：https://www.imooc.com/video/18688