java - 改造方法响应重用到另一个 Activity 中

Question

如何从 getDataForId(Integer.toString(1)); 获取数据？通过从 DisplayData 类调用相同的 getDataForId 方法？

我想重用相同的方法并得到结果。将相同的方法复制并粘贴到其他 Activity 类中没有任何意义。然后会有相同的代码重复两次。

这是我的 DisplayData.class

  public class DisplayData extends AppCompatActivity {

    Detail reqDetail;
    String BASE_URL = "";
    TextView name;

    ImageView image;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.display_data);

        name = (TextView) findViewById(R.id.name);

        image = (ImageView)findViewById(R.id.image);



        public void getDataForId(final String id) {

        ApiInterface apiInterface = APIClient.getApiInterface();
        Call<MyResponse> call = apiInterface.getResponse();
        call.enqueue(new Callback<MyResponse>() {

        @Override
        public void onResponse(Call<MyResponse> call, Response<MyResponse> response) {

               if (response.body() != null) {
                MyResponse myResponse = response.body();
                    List<Detail> details = myResponse.getDetails();
                        for (Detail d : details) {
                            if (d.getId().equals(id)) {
                                reqDetail = d;
                                    name.setText(reqDetail.getName());

                                            Picasso.with(DisplayData.this)
                                            .load(reqDetail.getName())
                                            .placeholder(R.mipmap.ic_launcher)
                                            .error(R.mipmap.ic_launcher)
                                            .into(image);
                                            }
                                        }

                                    }
                                }

            @Override
            public void onFailure(Call<MyResponse> call, Throwable t) {

            }
        });
    }

这是我的 SecondData 类，我想通过重复使用相同的方法来显示与 DisplayData 相同的数据响应

public class SecondData extends AppCompatActivity {

    Detail reqDetail;
    String BASE_URL = "";
    TextView name;

    ImageView image;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.second_main);

        name = (TextView) findViewById(R.id.name);

        image = (ImageView)findViewById(R.id.image);



    }


}

Answer 1

创建一个类来像这样进行改造调用

public class SampleClass {
private DataInterface mListener;

public SampleClass() {
    super();
}

public void getDataForId(final String id) {
    ApiInterface apiInterface = APIClient.getApiInterface();
    Call<MyResponse> call = apiInterface.getResponse();
    call.enqueue(new Callback<MyResponse>() {
        @Override
        public void onResponse(Call<MyResponse> call, Response<MyResponse> response) {
            if (response!=null && response.body() != null && mListener != null) {
                mListener.responseData(response.body());
            }
        }
        @Override
        public void onFailure(Call<MyResponse> call, Throwable t) {

        }
    });
}

public void setOnDataListener(DataInterface listener) {
    mListener = listener;
}

public interface DataInterface {
    void responseData( MyResponse myResponse );
}
}

在你的 Activity 中，像这样调用类

SampleClass sampleClass = new SampleClass();
sampleClass.setOnDataListener(new SampleClass.DataInterface() {
    @Override
    public void responseData(MyResponse myResponse) {

    }
 });
sampleClass.getDataForId("UR ID");

同样在您的类中将 ID 存储为私有(private)成员变量

private Integer YOUR_ID;

然后在获取结果时将结果 ID 与此 ID 进行比较

  List<Detail> details = myResponse.getDetails();
    for (Detail d : details) {
        if (d.getId().equals(YOUR_ID)) {
            reqDetail = d;
            name.setText(reqDetail.getName());

            Picasso.with(DisplayData.this)
                    .load(reqDetail.getName())
                    .placeholder(R.mipmap.ic_launcher)
                    .error(R.mipmap.ic_launcher)
                    .into(image);
          }
    }