Day 3 - Retrofit

1
compile 'com.squareup.retrofit:retrofit:1.6.1'

1
RestAdapter restAdapter = new RestAdapter.Builder()
2
        .setEndpoint("http://api.dribbble.com")
3
        .build();

1
package com.devahoy.learn30androidlibraries.day3;
2

3
import retrofit.http.GET;
4

5
public interface SimpleRetrofit {
6

7
    @GET("/shots/21603")
8
    Shot getShot();
9
}

1
package com.devahoy.learn30androidlibraries.day3;
2

3
import com.google.gson.annotations.SerializedName;
4

5
public class Shot {
6

7
    private int id;
8
    private String title;
9
    private String description;
10
    private String url;
11

12
    @SerializedName("image_url")
13
    private String imageUrl;
14

15
    //GETTER and SETTER
16
    ...

1
package com.devahoy.learn30androidlibraries.day3;
2

3
import android.os.Bundle;
4
import android.support.v7.app.ActionBarActivity;
5
import android.widget.Toast;
6

7
import retrofit.RestAdapter;
8

9
public class RetrofitActivity extends ActionBarActivity {
10

11
    private static final String TAG = RetrofitActivity.class.getSimpleName();
12

13
    @Override
14
    protected void onCreate(Bundle savedInstanceState) {
15
        super.onCreate(savedInstanceState);
16

17
        RestAdapter restAdapter = new RestAdapter.Builder()
18
                .setEndpoint("http://api.dribbble.com")
19
                .build();
20

21
        SimpleRetrofit retrofit = restAdapter.create(SimpleRetrofit.class);
22
        Shot shot = retrofit.getShot();
23

24
        Toast.makeText(this, "Name : " + shot.getTitle() + " URL : " + shot.getUrl(),
25
                Toast.LENGTH_LONG).show();
26

27
        new HttpAsyncTask().execute();
28
    }
29

30
}

1
package com.devahoy.learn30androidlibraries.day3;
2

3
import android.os.AsyncTask;
4
import android.os.Bundle;
5
import android.support.v7.app.ActionBarActivity;
6
import android.widget.Toast;
7

8
import retrofit.RestAdapter;
9

10
public class RetrofitActivity extends ActionBarActivity {
11

12
    private static final String TAG = RetrofitActivity.class.getSimpleName();
13

14
    @Override
15
    protected void onCreate(Bundle savedInstanceState) {
16
        super.onCreate(savedInstanceState);
17

18
        new HttpAsyncTask().execute();
19
    }
20

21
    public class HttpAsyncTask extends AsyncTask<Void, Void, Shot> {
22
        @Override
23
        protected Shot doInBackground(Void... params) {
24

25
            RestAdapter restAdapter = new RestAdapter.Builder()
26
                    .setEndpoint("http://api.dribbble.com")
27
                    .build();
28

29
            SimpleRetrofit retrofit = restAdapter.create(SimpleRetrofit.class);
30
            Shot shot = retrofit.getShot();
31

32
            return shot;
33
        }
34

35
        @Override
36
        protected void onPostExecute(Shot shot) {
37

38
            Toast.makeText(getApplicationContext(),
39
                    "Name : " + shot.getTitle() + " URL : " + shot.getUrl(),
40
                    Toast.LENGTH_LONG).show();
41
            super.onPostExecute(shot);
42
        }
43
    }
44
}

1
package com.devahoy.learn30androidlibraries.day3;
2

3
import retrofit.http.GET;
4
import retrofit.http.Path;
5

6
public interface SimpleRetrofit {
7

8
    @GET("/shots/21603")
9
    Shot getShot();
10

11
    @GET("/shots/{id}")
12
    Shot getShotById(@Path("id") int id);
13
}

1
Shot shot = retrofit.getShot();

1
Shot shot = retrofit.getShotById(30000);

1
package com.devahoy.learn30androidlibraries.day3;
2

3
import retrofit.Callback;
4
import retrofit.http.GET;
5
import retrofit.http.Path;
6

7
public interface SimpleRetrofit {
8
    ...
9

10
    @GET("/shots/{id}")
11
    void getShotByIdWithCallback(@Path("id") int id, Callback<Shot> callback);
12
}

1
SimpleRetrofit retrofit = restAdapter.create(SimpleRetrofit.class);
2
retrofit.getShotByIdWithCallback(21603, new Callback<Shot>() {
3
    @Override
4
    public void success(Shot shot, Response response) {
5
        Toast.makeText(getApplicationContext(),
6
                "Name : " + shot.getTitle() + " URL : " + shot.getUrl(),
7
                Toast.LENGTH_LONG).show();
8
    }
9

10
    @Override
11
    public void failure(RetrofitError error) {
12
        // If any error.
13
    }
14
});

1
package com.devahoy.learn30androidlibraries.day3;
2

3
import java.util.List;
4

5
public class ShotList {
6

7
    private List<Shot> shots;
8

9
    public List<Shot> getShots() {
10
        return shots;
11
    }
12

13
    public void setShots(List<Shot> shots) {
14
        this.shots = shots;
15
    }
16
}

1
package com.devahoy.learn30androidlibraries.day3;
2

3
import java.util.List;
4

5
import retrofit.Callback;
6
import retrofit.http.GET;
7
import retrofit.http.Path;
8

9
public interface SimpleRetrofit {
10
    ...
11

12
    @GET("/shots/popular")
13
    void getShotsByPopular(Callback<ShotList> callback);
14
}

1
<?xml version="1.0" encoding="utf-8"?>
2
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
3
          android:id="@+id/gridview"
4
          android:layout_width="match_parent"
5
          android:layout_height="match_parent"
6
          android:columnWidth="120dp"
7
          android:numColumns="auto_fit"
8
          android:verticalSpacing="4dp"
9
          android:horizontalSpacing="4dp"
10
          android:stretchMode="columnWidth"
11
          android:gravity="center" />

1
package com.devahoy.learn30androidlibraries.day3;
2

3
import android.content.Context;
4
import android.view.LayoutInflater;
5
import android.view.View;
6
import android.view.ViewGroup;
7
import android.widget.BaseAdapter;
8
import android.widget.GridView;
9
import android.widget.ImageView;
10

11
import com.squareup.picasso.Picasso;
12

13
public class GridAdapter extends BaseAdapter {
14
    private Context mContext;
15
    private LayoutInflater mInflater;
16
    private ShotList mShots;
17

18
    public GridAdapter(Context context, ShotList shots) {
19
        mContext = context;
20
        mInflater = LayoutInflater.from(context);
21
        mShots = shots;
22
    }
23

24
    public int getCount() {
25
        return mShots.getShots().size();
26
    }
27

28
    public Object getItem(int position) {
29
        return null;
30
    }
31

32
    public long getItemId(int position) {
33
        return 0;
34
    }
35

36
    public View getView(int position, View convertView, ViewGroup parent) {
37
        ImageView imageView;
38

39
        if (convertView == null) {
40
            imageView = new ImageView(mContext);
41
            imageView.setLayoutParams(new GridView.LayoutParams(
42
                    ViewGroup.LayoutParams.MATCH_PARENT, 200));
43
            imageView.setScaleType(ImageView.ScaleType.FIT_XY);
44
            imageView.setPadding(4, 4, 4, 4);
45
        } else {
46
            imageView = (ImageView) convertView;
47
        }
48

49
        Picasso.with(mContext)
50
                .load(mShots.getShots().get(position).getImageUrl())
51
                .into(imageView);
52

53
        return imageView;
54
    }
55

56
}

1
package com.devahoy.learn30androidlibraries.day3;
2

3
import android.os.AsyncTask;
4
import android.os.Bundle;
5
import android.support.v7.app.ActionBarActivity;
6
import android.view.View;
7
import android.widget.AdapterView;
8
import android.widget.GridView;
9
import android.widget.Toast;
10

11
import com.devahoy.learn30androidlibraries.R;
12

13
import retrofit.Callback;
14
import retrofit.RestAdapter;
15
import retrofit.RetrofitError;
16
import retrofit.client.Response;
17

18
public class RetrofitActivity extends ActionBarActivity {
19

20
    private static final String TAG = RetrofitActivity.class.getSimpleName();
21

22
    private GridView mGridView;
23

24
    @Override
25
    protected void onCreate(Bundle savedInstanceState) {
26
        super.onCreate(savedInstanceState);
27

28
        setContentView(R.layout.day3_activity_retrofit);
29
        mGridView = (GridView) findViewById(R.id.gridview);
30

31
        RestAdapter restAdapter = new RestAdapter.Builder()
32
                .setEndpoint("http://api.dribbble.com")
33
                .build();
34

35
        SimpleRetrofit retrofit = restAdapter.create(SimpleRetrofit.class);
36

37
        retrofit.getShotsByPopular(new Callback<ShotList>() {
38
            @Override
39
            public void success(ShotList shots, Response response) {
40
                mGridView.setAdapter(new GridAdapter(RetrofitActivity.this, shots));
41
            }
42

43
            @Override
44
            public void failure(RetrofitError error) {
45
                Toast.makeText(getApplicationContext(),
46
                        error.getMessage(),
47
                        Toast.LENGTH_LONG).show();
48
            }
49
        });
50

51
        mGridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
52
            public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
53
                Toast.makeText(RetrofitActivity.this, "" + position, Toast.LENGTH_SHORT).show();
54
            }
55
        });
56

57
    }
58
}