我正在尝试在片段多个按钮中实现,每个按钮都需要从web api获取一些数据。
我为一个按钮创建了改装回调。现在我在创建另一个按钮以从另一个api获取数据时遇到了一些麻烦。
这是我的界面:
public interface APIService {
@GET("/api/partners.json")
Call<List<Partner>> getPartners();
@GET("/api/drivers.json")
Call<List<Driver>> getDrivers();
@GET("/api/warehouses.json")
Call<List<Warehouse>> getWarehuses();
}
这是我的api助手类:
public class APIHelper {
public static final String BASE_URL = "https://part-of-url.herokuapp.com/";
public static APIService apiService;
public static APIService getApiService() {
if (apiService == null) {
Retrofit retrofit = new Retrofit.Builder().baseUrl(BASE_URL)
.addConverterFactory(GsonConverterFactory.create()).build();
apiService = retrofit.create(APIService.class);
}
return apiService;
}
}
这是我的驱动程序pojo模型(所有pojo模型几乎相同)
public class Driver {
@Expose
private List<String> driver_name = new ArrayList<String>();
public List<String> getDriver_name() { return driver_name; }
public void setDriver_name(List<String> driver_name) { this.driver_name = driver_name; }
}
这是我的片段,我得到了合作伙伴的回调,需要实现另一个按钮来获取驱动程序和第三个按钮来获取存储空间。
public class DownloadMain extends Fragment implements Callback<Partner> {
private static final String TAG = DownloadMain.class.getSimpleName();
private Button dloadPartners, takeDrivers, takeWarehouses, takeUsers, takeLogs;
private Call callPartners;
public DownloadMain() {}
public DownloadMain newInstance() { return new DownloadMain(); }
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.download_main, container, false);
dloadPartners = (Button) view.findViewById(R.id.downloadPartners);
takeDrivers = (Button) view.findViewById(R.id.btnDrivers);
dloadPartners.setOnClickListener(btnListener);
takeDrivers.setOnClickListener(btnDrivers);
callPartners = APIHelper.getApiService().getPartners();
return view;
}
Button.OnClickListener btnListener = (new Button.OnClickListener() {
@Override
public void onClick(View v) {
callPartners.clone().enqueue(DownloadMain.this);
checkIfDataIsInTable();
}
});
@Override
public void onResponse(Call call, Response response) {
if(response.body() == null) {
try {
response.errorBody().string();
} catch (IOException e) {
e.printStackTrace();
}
Toast.makeText(getActivity(), "No Partners!", Toast.LENGTH_SHORT).show();
} else {
ArrayList<String> partners = (ArrayList<String>) response.body();
ActiveAndroid.beginTransaction();
try {
for (int i = 0; i < partners.size() ; i++) {
Partners partner = new Partners();
partner.name = String.valueOf(partners);
partner.save();
Log.d("partner_ ", String.valueOf(response.body()));
}
ActiveAndroid.setTransactionSuccessful();
} finally {
ActiveAndroid.endTransaction();
}
Log.d(TAG, "Number of partners received: " + partners.size());
Toast.makeText(getActivity(), "Partners downloaded!", Toast.LENGTH_SHORT).show();
}
}
@Override
public void onFailure(Call call, Throwable t) {
}
}
现在我无法实现第二个按钮来从api获取数据。
如果有人能帮我实施第二个按钮以便从api获取驱动程序,我将不胜感激?
答案 0 :(得分:4)
使用retrofit2,您可以使用call.enqueue内联onResponse和onFailure,它允许您在同一个活动中拥有多个呼叫类型,因为它们被封装在call.enqueue()
中 const styles = StyleSheet.create({
instructions: {
fontSize: 16,
textAlign: 'center',
margin: 15,
},
});
render() {
return (
<View style={styles.container}>
<Text style={styles.instructions}>
<ChildComponent
cascadingStyle={styles}
/>
</View>
);
}
答案 1 :(得分:2)
您可以使用Base模型执行此操作,例如:
@GET("mypath")
Call<MyBaseModel<List<MyModel>>> getData();
在片段中实现回调
Callback<MyBaseModel<List<?>>>
MyBaseModel的一个例子是:
public class MyBaseModel<Data> {
private String page;
private Data[] results;
public String getPage() {
return page;
}
public Data[] getResults() {
return results;
}
}
onResponse应返回:
Callback<MyBaseModel<?>>
然后使用'instanceOf'
检查结果是否是模型的实例