Борзенко Антон, 2537

app/src/main/AndroidManifest.xml

@@ -16,6 +16,10 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <activity
+            android:name=".AddPlayListActivity"
+            android:label="@string/title_activity_main_activity2" >
+        </activity>
     </application>
 
 </manifest>

app/src/main/java/ru/ifmo/md/exam1/AddPlayListActivity.java

@@ -0,0 +1,52 @@
+package ru.ifmo.md.exam1;
+
+import android.content.Intent;
+import android.support.v7.app.ActionBarActivity;
+import android.os.Bundle;
+import android.view.Menu;
+import android.view.MenuItem;
+
+import java.util.ArrayList;
+// {"name":"Mapei – Don't Wait",
+// "url":"https://cs1-46v4.vk-cdn.net/p23/53f922c0d2cec9.mp3",
+// "duration":"3:35",
+// "popularity":76,
+// "genres":["Blues","Alternative","Soul"],
+// "year":2009}
+
+public class AddPlayListActivity extends ActionBarActivity {
+    ArrayList<Track> items;
+    int pos;
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main_activity2);
+
+        Intent intent = getIntent();
+        items = intent.getParcelableArrayListExtra("list");
+        pos = intent.getIntExtra("pos", 0);
+    }
+
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        // Inflate the menu; this adds items to the action bar if it is present.
+        getMenuInflater().inflate(R.menu.menu_main_activity2, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        // Handle action bar item clicks here. The action bar will
+        // automatically handle clicks on the Home/Up button, so long
+        // as you specify a parent activity in AndroidManifest.xml.
+        int id = item.getItemId();
+
+        //noinspection SimplifiableIfStatement
+        if (id == R.id.action_settings) {
+            return true;
+        }
+
+        return super.onOptionsItemSelected(item);
+    }
+}

app/src/main/java/ru/ifmo/md/exam1/MainActivity.java

@@ -1,39 +1,172 @@
 package ru.ifmo.md.exam1;
 
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.database.DataSetObserver;
+import android.net.Uri;
 import android.support.v7.app.ActionBarActivity;
 import android.os.Bundle;
+import android.util.JsonReader;
+import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Adapter;
+import android.widget.AdapterView;
+import android.widget.ListAdapter;
+import android.widget.ListView;
 
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.util.ArrayList;
+import java.util.List;
 
 public class MainActivity extends ActionBarActivity {
-
+    private static final String MY_TAG = "EXAM2_MAIN";
+    ListView lv;
+    Adapter tracklistAdapter, playlistAdapter;
+    private final ArrayList<Track> trackList = new ArrayList<Track>();
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
+
+        loadMusic();
+        Log.d(MY_TAG, "there is " + trackList.size() + " loaded tracks");
+        if (!trackList.isEmpty()) {
+            Log.d(MY_TAG, "First track is '" + trackList.get(0).toString() + "'");
+        }
+        lv = (ListView)findViewById(R.id.listView);
+        tracklistAdapter = new TrackListAdapter(this, android.R.layout.simple_list_item_1, trackList);
+        lv.setAdapter((TrackListAdapter)tracklistAdapter);
+        // lv.deferNotifyDataSetChanged();
+        lv.setOnItemClickListener(
+                new AdapterView.OnItemClickListener() {
+                    @Override
+                    public void onItemClick(AdapterView<?> parent, View view, final int position, long id) {
+                        final AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
+                        builder.setTitle(showFullInfo(trackList.get(position)));
+                        builder.setItems(new String[] {"Delete track", "Add to playlist", "Download"}, new DialogInterface.OnClickListener() {
+                            public void onClick(DialogInterface dialog, int which) {
+                                if (which == 0) {
+                                    deleteTrack(position);
+                                }
+                                switch (which) {
+                                    case 0:
+                                        deleteTrack(position);
+                                        break;
+                                    case 1:
+                                        addToList(position);
+                                        break;
+                                    case 2:
+                                        Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(trackList.get(position).url));
+                                        startActivity(browserIntent);
+                                }
+                            }
+                        });
+                        builder.create().show();
+                    }
+
+                    private String showFullInfo(Track track) {
+                        return track.name + " (" + track.duration + ") - " + track.year;
+                    }
+                }
+        );
+    }
+
+    private void addToList(int position) {
+
     }
 
+    private void deleteTrack(int position) {
+        String url = trackList.get(position).url;
+        trackList.remove(position);
+        ((TrackListAdapter)tracklistAdapter).notifyDataSetChanged();
+    }
+
+    // {"name":"Mapei – Don't Wait",
+// "url":"https://cs1-46v4.vk-cdn.net/p23/53f922c0d2cec9.mp3",
+// "duration":"3:35",
+// "popularity":76,
+// "genres":["Blues","Alternative","Soul"],
+// "year":2009}
+    private String[] getStringArray(JsonReader reader) throws IOException {
+        ArrayList<String> result = new ArrayList<String>();
+
+        reader.beginArray();
+        while (reader.hasNext()) {
+            result.add(reader.nextString());
+        }
+        reader.endArray();
+
+        return result.toArray(new String[result.size()]);
+    }
+    private Track readTrack(JsonReader reader) throws IOException {
+        Track result = new Track();
+
+        reader.beginObject();
+        while (reader.hasNext()) {
+            String name = reader.nextName();
+            if (name.equals("name")) {
+                result.name = reader.nextString();
+            } else if (name.equals("url")) {
+                result.url = reader.nextString();
+            } else if (name.equals("duration")) {
+                result.duration = reader.nextString();
+            } else if (name.equals("popularity")) {
+                result.popularity = reader.nextInt();
+            } else if (name.equals("year")) {
+                result.year = reader.nextInt();
+            } else if (name.equals("genres")) {
+                result.genres = getStringArray(reader);
+            }
+        }
+        reader.endObject();
+
+        return result;
+    }
+    private void loadMusic() {
+        try {
+            JsonReader reader = new JsonReader(
+                new InputStreamReader(
+                        getResources().openRawResource(R.raw.music)
+                )
+            );
+            reader.beginArray();
+            while (reader.hasNext()) {
+                trackList.add(readTrack(reader));
+            }
+            reader.endArray();
+            reader.close();
+        } catch (Exception e) {
+            Log.e(MY_TAG, e.getMessage());
+        }
+    }
 
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
-        // Inflate the menu; this adds items to the action bar if it is present.
+
         getMenuInflater().inflate(R.menu.menu_main, menu);
         return true;
     }
 
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
-        // Handle action bar item clicks here. The action bar will
-        // automatically handle clicks on the Home/Up button, so long
-        // as you specify a parent activity in AndroidManifest.xml.
         int id = item.getItemId();
-
-        //noinspection SimplifiableIfStatement
         if (id == R.id.action_settings) {
             return true;
         }
 
         return super.onOptionsItemSelected(item);
     }
+
+    public void addPlaylist(MenuItem item) {
+    }
+
+    public void showPlaylists(MenuItem item) {
+    }
 }

app/src/main/java/ru/ifmo/md/exam1/Playlist.java

@@ -0,0 +1,47 @@
+package ru.ifmo.md.exam1;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+// {"name":"Mapei – Don't Wait",
+// "url":"https://cs1-46v4.vk-cdn.net/p23/53f922c0d2cec9.mp3",
+// "duration":"3:35",
+// "popularity":76,
+// "genres":["Blues","Alternative","Soul"],
+// "year":2009}
+
+public class Playlist implements Parcelable {
+    public String name = "New list";
+    public String[] list = new String[0];
+
+    public Playlist() {}
+
+    public Playlist(String name, String[] list) {
+        this.name = name;
+        this.list = list;
+    }
+
+    private Playlist(Parcel in) {
+        name = in.readString();
+        int length = in.readInt();
+        in.readStringArray(list = new String[length]);
+    }
+
+    public int describeContents() {
+        return 0;
+    }
+    public void writeToParcel(Parcel out, int i) {
+        out.writeString(name);
+        out.writeInt(list.length);
+        out.writeStringArray(list);
+    }
+
+    public static final Creator CREATOR = new Creator() {
+        public Playlist createFromParcel(Parcel in) {
+            return new Playlist(in);
+        }
+        public Playlist[] newArray(int length) {
+            return new Playlist[length];
+        }
+    };
+}

app/src/main/java/ru/ifmo/md/exam1/Track.java

@@ -0,0 +1,66 @@
+package ru.ifmo.md.exam1;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+// {"name":"Mapei – Don't Wait",
+// "url":"https://cs1-46v4.vk-cdn.net/p23/53f922c0d2cec9.mp3",
+// "duration":"3:35",
+// "popularity":76,
+// "genres":["Blues","Alternative","Soul"],
+// "year":2009}
+
+public class Track implements Parcelable {
+    public String name = null, url = null, duration = null;
+    private int genLength = 0;
+    public String[] genres = new String[0];
+    public int popularity = 0, year = 0;
+
+    public Track() {}
+
+    public Track(String name, String url, String duration, String[] genres, int popularity, int year) {
+        this.name = name;
+        this.url = url;
+        this.duration = duration;
+        this.genres = genres;
+        this.popularity = popularity;
+        this.year = year;
+        this.genLength = genres.length;
+    }
+
+    private Track(Parcel in) {
+        this.name = in.readString();
+        this.url  = in.readString();
+        this.duration = in.readString();
+        this.genLength = in.readInt();
+        in.readStringArray(this.genres = new String[genLength]);
+        this.popularity = in.readInt();
+        this.year = in.readInt();
+    }
+
+    public int describeContents() {
+        return 0;
+    }
+    public void writeToParcel(Parcel out, int i) {
+        out.writeString(name);
+        out.writeString(url);
+        out.writeString(duration);
+        out.writeInt(genres.length);
+        out.writeStringArray(genres);
+        out.writeInt(popularity);
+        out.writeInt(year);
+    }
+
+    public static final Parcelable.Creator CREATOR = new Parcelable.Creator() {
+        public Track createFromParcel(Parcel in) {
+            return new Track(in);
+        }
+        public Track[] newArray(int length) {
+            return new Track[length];
+        }
+    };
+
+    public String toString() {
+        return name + " (" + duration + ")";
+    }
+}

app/src/main/java/ru/ifmo/md/exam1/TrackListAdapter.java

@@ -0,0 +1,12 @@
+package ru.ifmo.md.exam1;
+
+import android.app.Activity;
+import android.widget.ArrayAdapter;
+
+import java.util.ArrayList;
+
+public class TrackListAdapter extends ArrayAdapter<Track> {
+    public TrackListAdapter(Activity activity, int id, ArrayList<Track> tracks) {
+        super(activity, id, tracks);
+    }
+}

app/src/main/res/layout/activity_main.xml

@@ -3,9 +3,17 @@
     android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
     android:paddingRight="@dimen/activity_horizontal_margin"
     android:paddingTop="@dimen/activity_vertical_margin"
-    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
+    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity"><![CDATA[
 
-    <TextView android:text="@string/hello_world" android:layout_width="wrap_content"
+    TextView android:text="@string/hello_world" android:layout_width="wrap_content"
         android:layout_height="wrap_content" />
 
+    ]]>
+
+    <ListView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:id="@+id/listView"
+        android:layout_alignParentRight="true"
+        android:layout_alignParentEnd="true" />
 </RelativeLayout>