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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 com.example.android.apis.R;
     20 
     21 import android.app.Activity;
     22 import android.content.Intent;
     23 import android.content.pm.ResolveInfo;
     24 import android.os.Bundle;
     25 import android.view.View;
     26 import android.view.ViewGroup;
     27 import android.widget.BaseAdapter;
     28 import android.widget.GridView;
     29 import android.widget.ImageView;
     30 
     31 import java.util.List;
     32 
     33 public class LayoutAnimation5 extends Activity {
     34     @Override
     35     protected void onCreate(Bundle savedInstanceState) {
     36         super.onCreate(savedInstanceState);
     37 
     38         loadApps();
     39 
     40         setContentView(R.layout.layout_animation_5);
     41         GridView grid = (GridView) findViewById(R.id.grid);
     42         grid.setAdapter(new AppsAdapter());
     43     }
     44 
     45     private List<ResolveInfo> mApps;
     46 
     47     private void loadApps() {
     48         Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
     49         mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
     50 
     51         mApps = getPackageManager().queryIntentActivities(mainIntent, 0);
     52     }
     53 
     54     public class AppsAdapter extends BaseAdapter {
     55         public View getView(int position, View convertView, ViewGroup parent) {
     56             ImageView i = new ImageView(LayoutAnimation5.this);
     57 
     58             ResolveInfo info = mApps.get(position % mApps.size());
     59 
     60             i.setImageDrawable(info.activityInfo.loadIcon(getPackageManager()));
     61             i.setScaleType(ImageView.ScaleType.FIT_CENTER);
     62             final int w = (int) (36 * getResources().getDisplayMetrics().density + 0.5f);
     63             i.setLayoutParams(new GridView.LayoutParams(w, w));
     64             return i;
     65         }
     66 
     67 
     68         public final int getCount() {
     69             return Math.min(32, mApps.size());
     70         }
     71 
     72         public final Object getItem(int position) {
     73             return mApps.get(position % mApps.size());
     74         }
     75 
     76         public final long getItemId(int position) {
     77             return position;
     78         }
     79     }
     80 
     81 }
     82