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      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
     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 
     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 {
     61         public AppsAdapter() {
     62         }
     63 
     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 
     82         public final int getCount() {
     83             return mApps.size();
     84         }
     85 
     86         public final Object getItem(int position) {
     87             return mApps.get(position);
     88         }
     89 
     90         public final long getItemId(int position) {
     91             return position;
     92         }
     93     }
     94 
     95 }
     96