1 /*
2  * Copyright (C) 2007 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 
17 package com.example.android.apis.view;
18 
19 import android.app.Activity;
20 import android.content.Intent;
21 import android.content.pm.ResolveInfo;
22 import android.os.Bundle;
23 import android.view.View;
24 import android.view.ViewGroup;
25 import android.widget.BaseAdapter;
26 import android.widget.GridView;
27 import android.widget.ImageView;
28 
29 import java.util.List;
30 
31 //Need the following import to get access to the app resources, since this
32 //class is in a sub-package.
33 import com.example.android.apis.R;
34 
35 
36 public class Grid1 extends Activity {
37 
38     GridView mGrid;
39 
40     @Override
onCreate(Bundle savedInstanceState)41     protected void onCreate(Bundle savedInstanceState) {
42         super.onCreate(savedInstanceState);
43 
44         loadApps(); // do this in onresume?
45 
46         setContentView(R.layout.grid_1);
47         mGrid = (GridView) findViewById(R.id.myGrid);
48         mGrid.setAdapter(new AppsAdapter());
49     }
50 
51     private List<ResolveInfo> mApps;
52 
loadApps()53     private void loadApps() {
54         Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
55         mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
56 
57         mApps = getPackageManager().queryIntentActivities(mainIntent, 0);
58     }
59 
60     public class AppsAdapter extends BaseAdapter {
AppsAdapter()61         public AppsAdapter() {
62         }
63 
getView(int position, View convertView, ViewGroup parent)64         public View getView(int position, View convertView, ViewGroup parent) {
65             ImageView i;
66 
67             if (convertView == null) {
68                 i = new ImageView(Grid1.this);
69                 i.setScaleType(ImageView.ScaleType.FIT_CENTER);
70                 i.setLayoutParams(new GridView.LayoutParams(50, 50));
71             } else {
72                 i = (ImageView) convertView;
73             }
74 
75             ResolveInfo info = mApps.get(position);
76             i.setImageDrawable(info.activityInfo.loadIcon(getPackageManager()));
77 
78             return i;
79         }
80 
81 
getCount()82         public final int getCount() {
83             return mApps.size();
84         }
85 
getItem(int position)86         public final Object getItem(int position) {
87             return mApps.get(position);
88         }
89 
getItemId(int position)90         public final long getItemId(int position) {
91             return position;
92         }
93     }
94 
95 }
96