1 /*
2  * Copyright (C) 2014 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
5  * in compliance with the License. You may obtain a copy of the License at
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software distributed under the License
10  * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
11  * or implied. See the License for the specific language governing permissions and limitations under
12  * the License.
13  */
14 package com.example.android.leanback;
15 
16 import android.content.Intent;
17 import android.os.Bundle;
18 import android.os.Handler;
19 import android.support.v17.leanback.widget.ArrayObjectAdapter;
20 import android.support.v17.leanback.widget.Presenter;
21 import android.support.v17.leanback.widget.RowPresenter;
22 import android.support.v17.leanback.widget.VerticalGridPresenter;
23 import android.support.v17.leanback.widget.Row;
24 import android.support.v17.leanback.widget.OnItemViewClickedListener;
25 import android.support.v17.leanback.widget.OnItemViewSelectedListener;
26 import android.util.Log;
27 import android.view.Gravity;
28 import android.view.View;
29 import android.view.ViewGroup;
30 import android.widget.TextView;
31 
32 public class VerticalGridFragment extends android.support.v17.leanback.app.VerticalGridFragment {
33     private static final String TAG = "leanback.VerticalGridFragment";
34 
35     private static final int NUM_COLUMNS = 3;
36     private static final int NUM_ITEMS = 50;
37     private static final int HEIGHT = 200;
38     private static final boolean TEST_ENTRANCE_TRANSITION = true;
39 
40     private static class Adapter extends ArrayObjectAdapter {
Adapter(StringPresenter presenter)41         public Adapter(StringPresenter presenter) {
42             super(presenter);
43         }
callNotifyChanged()44         public void callNotifyChanged() {
45             super.notifyChanged();
46         }
47     }
48     private Adapter mAdapter;
49 
50     @Override
onCreate(Bundle savedInstanceState)51     public void onCreate(Bundle savedInstanceState) {
52         Log.i(TAG, "onCreate");
53         super.onCreate(savedInstanceState);
54 
55         setBadgeDrawable(getActivity().getResources().getDrawable(R.drawable.ic_title));
56         setTitle("Leanback Vertical Grid Demo");
57 
58         setupFragment();
59         if (TEST_ENTRANCE_TRANSITION) {
60             // don't run entrance transition if fragment is restored.
61             if (savedInstanceState == null) {
62                 prepareEntranceTransition();
63             }
64         }
65         // simulates in a real world use case  data being loaded two seconds later
66         new Handler().postDelayed(new Runnable() {
67             public void run() {
68                 loadData();
69                 startEntranceTransition();
70             }
71         }, 2000);
72     }
73 
loadData()74     private void loadData() {
75         for (int i = 0; i < NUM_ITEMS; i++) {
76             mAdapter.add(Integer.toString(i));
77         }
78     }
79 
setupFragment()80     private void setupFragment() {
81         VerticalGridPresenter gridPresenter = new VerticalGridPresenter();
82         gridPresenter.setNumberOfColumns(NUM_COLUMNS);
83         setGridPresenter(gridPresenter);
84 
85         mAdapter = new Adapter(new StringPresenter());
86         setAdapter(mAdapter);
87 
88         setOnItemViewSelectedListener(new OnItemViewSelectedListener() {
89             @Override
90             public void onItemSelected(Presenter.ViewHolder itemViewHolder, Object item,
91                     RowPresenter.ViewHolder rowViewHolder, Row row) {
92                 Log.i(TAG, "onItemSelected: " + item + " row " + row);
93             }
94         });
95 
96         setOnItemViewClickedListener(new OnItemViewClickedListener() {
97             @Override
98             public void onItemClicked(Presenter.ViewHolder itemViewHolder, Object item,
99                     RowPresenter.ViewHolder rowViewHolder, Row row) {
100                 Log.i(TAG, "onItemClicked: " + item + " row " + row);
101                 mAdapter.callNotifyChanged();
102             }
103         });
104         setOnSearchClickedListener(new View.OnClickListener() {
105             @Override
106             public void onClick(View view) {
107                 Intent intent = new Intent(getActivity(), SearchActivity.class);
108                 startActivity(intent);
109             }
110         });
111     }
112 }
113