我是改装的新手,我想让我的getData方法返回一个功能对象.最简单的方法是什么？

DataService.java

public class DataService {

private static final String TAG = MainActivity.class.getSimpleName();

private final ApiClient apiClient;

public DataService() {

apiClient = new ApiClientFactory().createApiClient();

}

public List getData(){

apiClient.getData().enqueue(new Callback() {

@Override

public void onResponse(Call call, Response response) {

List features = response.body().getFeatures();

Log.d(TAG, "Data successfully downloaded");

}

@Override

public void onFailure(Call call, Throwable t) {

Log.e(TAG, t.toString());

}

});

//I need to return features in getData method

}

}

解决方法:

你不能回来,你必须“回电”.

将内部Callback类提取为参数.

public void getData(Callback callback){

apiClient.getData().enqueue(callback);

}

在你的其他代码中

// DataService service = ...;

// Define Callback

Callback responseCallback = new Callback() {

@Override

public void onResponse(Call call, Response response) {

List features = response.body().getFeatures();

Log.d(TAG, "Data successfully downloaded");

// Data is returned here

for (Feature f: features) {

Log.d("feature", String.valueOf(f)); // for example

}

}

@Override

public void onFailure(Call call, Throwable t) {

Log.e(TAG, t.toString());

}

};

// Call it

service.getData(responseCallback);

你也可以做service.getData(new Callback< DataResponse>(){…});

标签：java,android,retrofit2

来源： https://codeday.me/bug/20190522/1154430.html