GridActivity.java revision 85df3117f0fcd0aa10d7bd45194dab97e22112f2 
1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.support.v17.leanback.widget;
18
19import android.support.v17.leanback.tests.R;
20import android.support.v7.widget.RecyclerView;
21import android.support.v17.leanback.widget.BaseGridView;
22import android.support.v17.leanback.widget.OnChildSelectedListener;
23import android.app.Activity;
24import android.content.Context;
25import android.content.Intent;
26import android.graphics.Color;
27import android.os.Bundle;
28import android.util.Log;
29import android.util.SparseArray;
30import android.view.View;
31import android.view.View.OnClickListener;
32import android.view.View.OnFocusChangeListener;
33import android.view.ViewGroup;
34import android.widget.ImageView;
35import android.widget.TextView;
36
37/**
38 * @hide from javadoc
39 */
40public class GridActivity extends Activity {
41    private static final String TAG = "GridActivity";
42
43    public static final String EXTRA_GRIDVIEW_LAYOUT_SIZE = "gridViewSize";
44    public static final String EXTRA_ORIENTATION = "orientation";
45    public static final String EXTRA_NUM_ITEMS = "numItems";
46    public static final String EXTRA_ITEMS = "items";
47    public static final String EXTRA_ROWS = "rows";
48    public static final String EXTRA_STAGGERED = "staggered";
49    public static final String SELECT_ACTION = "android.test.leanback.widget.SELECT";
50
51    static final int DEFAULT_ORIENTATION = BaseGridView.HORIZONTAL;
52    static final int DEFAULT_NUM_ITEMS = 100;
53    static final int DEFAULT_ROWS = 3;
54    static final boolean DEFAULT_STAGGERED = true;
55
56    private static final boolean DEBUG = false;
57
58    int mOrientation;
59    int mRows;
60    int mNumItems;
61    boolean mStaggered;
62
63    int[] mGridViewLayoutSize;
64    BaseGridView mGridView;
65    int[] mItemLengths;
66
67    private int mBoundCount;
68
69    private View createView() {
70
71        View view = getLayoutInflater().inflate(mOrientation == BaseGridView.HORIZONTAL ?
72                R.layout.horizontal_grid: R.layout.vertical_grid, null, false);
73        mGridView = (BaseGridView) view.findViewById(R.id.gridview);
74        if (mGridViewLayoutSize != null) {
75            ViewGroup.LayoutParams lp = (ViewGroup.LayoutParams) mGridView.getLayoutParams();
76            lp.width = mGridViewLayoutSize[0];
77            lp.height = mGridViewLayoutSize[1];
78            mGridView.setLayoutParams(lp);
79        }
80
81        if (mOrientation == BaseGridView.HORIZONTAL) {
82            ((HorizontalGridView) mGridView).setNumRows(mRows);
83        } else {
84            ((VerticalGridView) mGridView).setNumColumns(mRows);
85        }
86        mGridView.setWindowAlignment(BaseGridView.WINDOW_ALIGN_BOTH_EDGE);
87        mGridView.setWindowAlignmentOffsetPercent(35);
88        mGridView.setOnChildSelectedListener(new OnChildSelectedListener() {
89            @Override
90            public void onChildSelected(ViewGroup parent, View view, int position, long id) {
91                if (DEBUG) Log.d(TAG, "onChildSelected position=" + position +  " id="+id);
92            }
93        });
94        return view;
95    }
96
97    @Override
98    protected void onCreate(Bundle savedInstanceState) {
99        Intent intent = getIntent();
100
101        mGridViewLayoutSize = intent.getIntArrayExtra(EXTRA_GRIDVIEW_LAYOUT_SIZE);
102        mOrientation = intent.getIntExtra(EXTRA_ORIENTATION, DEFAULT_ORIENTATION);
103        mRows = intent.getIntExtra(EXTRA_ROWS, DEFAULT_ROWS);
104        mStaggered = intent.getBooleanExtra(EXTRA_STAGGERED, DEFAULT_STAGGERED);
105        mItemLengths = intent.getIntArrayExtra(EXTRA_ITEMS);
106        if (mItemLengths == null) {
107            mNumItems = intent.getIntExtra(EXTRA_NUM_ITEMS, DEFAULT_NUM_ITEMS);
108            mItemLengths = new int[mNumItems];
109            for (int i = 0; i < mItemLengths.length; i++) {
110                if (mOrientation == BaseGridView.HORIZONTAL) {
111                    mItemLengths[i] = mStaggered ? (int)(Math.random() * 180) + 180 : 240;
112                } else {
113                    mItemLengths[i] = mStaggered ? (int)(Math.random() * 120) + 120 : 160;
114                }
115            }
116        } else {
117            mNumItems = mItemLengths.length;
118        }
119
120        super.onCreate(savedInstanceState);
121
122        if (DEBUG) Log.v(TAG, "onCreate " + this);
123
124        RecyclerView.Adapter adapter = new MyAdapter();
125
126        View view = createView();
127
128        mGridView.setAdapter(new MyAdapter());
129        setContentView(view);
130    }
131
132    @Override
133    protected void onNewIntent(Intent intent) {
134        if (DEBUG) Log.v(TAG, "onNewIntent " + intent+ " "+this);
135        if (intent.getAction().equals(SELECT_ACTION)) {
136            int position = intent.getIntExtra("SELECT_POSITION", -1);
137            if (position >= 0) {
138                mGridView.setSelectedPosition(position);
139            }
140        }
141        super.onNewIntent(intent);
142    }
143
144    private OnFocusChangeListener mItemFocusChangeListener = new OnFocusChangeListener() {
145
146        @Override
147        public void onFocusChange(View v, boolean hasFocus) {
148            if (hasFocus) {
149                v.setBackgroundColor(Color.YELLOW);
150            } else {
151                v.setBackgroundColor(Color.LTGRAY);
152            }
153        }
154    };
155
156    void resetBoundCount() {
157        mBoundCount = 0;
158    }
159
160    int getBoundCount() {
161       return mBoundCount;
162    }
163
164    void swap(int index1, int index2) {
165        if (index1 == index2) {
166            return;
167        } else if (index1 > index2) {
168            int index = index1;
169            index1 = index2;
170            index2 = index;
171        }
172        int value = mItemLengths[index1];
173        mItemLengths[index1] = mItemLengths[index2];
174        mItemLengths[index2] = value;
175        mGridView.getAdapter().notifyItemMoved(index1, index2);
176        mGridView.getAdapter().notifyItemMoved(index2 - 1, index1);
177    }
178
179    void changeArraySize(int length) {
180        mNumItems = length;
181        mGridView.getAdapter().notifyDataSetChanged();
182    }
183
184    class MyAdapter extends RecyclerView.Adapter {
185
186        @Override
187        public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
188            if (DEBUG) Log.v(TAG, "createViewHolder " + viewType);
189            TextView textView = new TextView(parent.getContext());
190            textView.setTextColor(Color.BLACK);
191            textView.setFocusable(true);
192            textView.setFocusableInTouchMode(true);
193            textView.setOnFocusChangeListener(mItemFocusChangeListener);
194            return new ViewHolder(textView);
195        }
196
197        @Override
198        public void onBindViewHolder(RecyclerView.ViewHolder baseHolder, int position) {
199            if (DEBUG) Log.v(TAG, "bindViewHolder " + position + " " + baseHolder);
200            mBoundCount++;
201            ViewHolder holder = (ViewHolder) baseHolder;
202            ((TextView) holder.itemView).setText("Item "+position);
203            holder.itemView.setBackgroundColor(Color.LTGRAY);
204            if (mOrientation == BaseGridView.HORIZONTAL) {
205                holder.itemView.setLayoutParams(new ViewGroup.MarginLayoutParams(
206                        mItemLengths[position], 80));
207            } else {
208                holder.itemView.setLayoutParams(new ViewGroup.MarginLayoutParams(
209                        240, mItemLengths[position]));
210            }
211        }
212
213        @Override
214        public int getItemCount() {
215            return mNumItems;
216        }
217    }
218
219    static class ViewHolder extends RecyclerView.ViewHolder {
220
221        public ViewHolder(View v) {
222            super(v);
223        }
224    }
225}
226