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/**
 * Description: Girl business Bean
 *
 * @author coder-pig: 2016/08/06 17:16
 */
public class Sister {

    private String _id;
    private String createAt;
    private String desc;
    private String publishedAt;
    private String source;
    private String type;
    private String url;
    private boolean used;
    private String who;

    // Some get and set methods...

}

/**
 * Description: Network request processing related class
 *
 * @author coder-pig: 2016/08/07 14:28
 */
public class SisterApi {
    private static final String TAG = "Network";
    private static final String BASE_URL = "http://gank.io/api/data/benefits/";

    /**
     * Query girl information
     */
    public ArrayList<Sister> fetchSister(int count, int page) {
        String fetchUrl = BASE_URL + count + "/" + page;
        ArrayList<Sister> sisters = new ArrayList<>();
        try {
            URL url = new URL(fetchUrl);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setConnectTimeout(5000);
            conn.setRequestMethod("GET");
            int code = conn.getResponseCode();
            Log.v(TAG, "Server response: " + code);
            if (code == 200) {
                InputStream in = conn.getInputStream();
                byte[] data = readFromStream(in);
                String result = new String(data, "UTF-8");
                sisters = parseSister(result);
            } else {
                Log.e(TAG, "Request failed: " + code);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return sisters;
    }

    /**
     * Method to parse the returned Json data
     */
    public ArrayList<Sister> parseSister(String content) throws Exception {
        ArrayList<Sister> sisters = new ArrayList<>();
        JSONObject object = new JSONObject(content);
        JSONArray array = object.getJSONArray("results");
        for (int i = 0; i < array.length(); i++) {
            JSONObject results = (JSONObject) array.get(i);
            Sister sister = new Sister();
            sister.set_id(results.getString("_id"));
            sister.setCreateAt(results.getString("createdAt"));
            sister.setDesc(results.getString("desc"));
            sister.setPublishedAt(results.getString("publishedAt"));
            sister.setSource(results.getString("source"));
            sister.setType(results.getString("type"));
            sister
case R.id.btn_show:
                if(data != null && !data.isEmpty()) {
                    if (curPos > 9) {
                        curPos = 0;
                    }
                    loader.load(showImg, data.get(curPos).getUrl());
                    curPos++;
                }
                break;
            case R.id.btn_refresh:
                page++;
                new SisterTask(page).execute();
                curPos = 0;
                break;
        }
    }

    private class SisterTask extends AsyncTask&lt;Void,Void,ArrayList<Sister>> {

        private int page;

        public SisterTask(int page) {
            this.page = page;
        }

        @Override
        protected ArrayList<Sister> doInBackground(Void... params) {
            return sisterApi.fetchSister(10,page);
        }

        @Override
        protected void onPostExecute(ArrayList<Sister> sisters) {
            super.onPostExecute(sisters);
            data.clear();
            data.addAll(sisters);
        }
    }

}

---

## 3. Running Effect Display

---

## 4. Submit Code, Merge Branch, Delete Branch

Enter the command to submit the code one by one:

After submitting to Github, you can see:

Since I didn't download the Github client, I'll use the command to merge branches:
Switch to the develop branch and merge parse_json

Then submit the merged develop to Github, (since it's a single person development, so basically no need to deal with conflicts

Okay, after pushing, you can see that the content of develop on Github has changed

So, the parse_json branch we opened is now of no use, we can use the command to delete this branch:

Of course, here we only delete the local repository, Github still has this branch, enter the command again:

Then check on GitHub:

Okay, the branch has been deleted! The code on the develop branch is also the latest code!

---

## Bug Fix - (2016.8.9):

Today, God B in the group gave me feedback on the potential memory overflow issue that may be caused by new AsyncTask,
I thought about it carefully and it is indeed possible. Due to time constraints, I didn't pay attention to this when writing. I specially opened a **asyncTask_bug** branch to fix this problem, and modified the code of MainActivity, the modified code is as follows:

private ArrayList<Sister> data;
private int curPos = 0; //Which one is currently displayed
private int page = 1;   //Current page number
private PictureLoader loader;
private SisterApi sisterApi;
private SisterTask sisterTask;

@Override protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    sisterApi = new SisterApi();
    loader = new PictureLoader();
    initData();
    initUI();
}

private void initData() {
    data = new ArrayList<>();
}

private void initUI() {
    showBtn = (Button) findViewById(R.id.btn_show);
    refreshBtn = (Button) findViewById(R.id.btn_refresh);
    showImg = (ImageView) findViewById(R.id.img_show);

    showBtn.setOnClickListener(this);
    refreshBtn.setOnClickListener(this);
}

@Override public void onClick(View v) {
    switch (v.getId()) {
        case R.id.btn_show:
            if(data != null && !data.isEmpty()) {
                if (curPos > 9) {
                    curPos = 0;
                }
                loader.load(showImg, data.get(curPos).getUrl());
                curPos++;
            }
            break;
        case R.id.btn_refresh:
            sisterTask = new SisterTask();
            sisterTask.execute();
            curPos = 0;
            break;
    }
}

private class SisterTask extends AsyncTask&lt;Void,Void,ArrayList<Sister>> {

    public SisterTask() { }

    @Override
    protected ArrayList<Sister> doInBackground(Void... params) {
        return sisterApi.fetchSister(10,page);
    }

    @Override
    protected void onPostExecute(ArrayList<Sister> sisters) {
        super.onPostExecute(sisters);
        data.clear();
        data.addAll(sisters);
        page++;
    }

    @Override
    protected void onCancelled() {
        super.onCancelled();
        sisterTask = null;
    }
}

@Override
protected void onDestroy() {
    super.onDestroy();
    sisterTask.cancel(true);
}