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 android.view;
18 
19 import com.android.frameworks.coretests.R;
20 
21 import android.os.Bundle;
22 import android.app.Activity;
23 import android.widget.LinearLayout;
24 import android.widget.ScrollView;
25 import android.view.ViewGroup;
26 import android.view.View;
27 import android.view.Display;
28 import android.view.ViewConfiguration;
29 
30 /**
31  * This activity contains two Views, one as big as the screen, one much larger. The large one
32  * should not be able to activate its drawing cache.
33  */
34 public class BigCache extends Activity {
35     @Override
onCreate(Bundle icicle)36     protected void onCreate(Bundle icicle) {
37         super.onCreate(icicle);
38 
39         final LinearLayout testBed = new LinearLayout(this);
40         testBed.setOrientation(LinearLayout.VERTICAL);
41         testBed.setLayoutParams(new ViewGroup.LayoutParams(
42                 ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
43 
44         final int cacheSize = ViewConfiguration.getMaximumDrawingCacheSize();
45         final Display display = getWindowManager().getDefaultDisplay();
46         final int screenWidth = display.getWidth();
47         final int screenHeight = display.getHeight();
48 
49         final View tiny = new View(this);
50         tiny.setId(R.id.a);
51         tiny.setBackgroundColor(0xFFFF0000);
52         tiny.setLayoutParams(new LinearLayout.LayoutParams(screenWidth, screenHeight));
53 
54         final View large = new View(this);
55         large.setId(R.id.b);
56         large.setBackgroundColor(0xFF00FF00);
57         // Compute the height of the view assuming a cache size based on ARGB8888
58         final int height = 2 * (cacheSize / 2) / screenWidth;
59         large.setLayoutParams(new LinearLayout.LayoutParams(screenWidth, height));
60 
61         final ScrollView scroller = new ScrollView(this);
62         scroller.setLayoutParams(new ViewGroup.LayoutParams(
63                 ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
64 
65         testBed.addView(tiny);
66         testBed.addView(large);
67         scroller.addView(testBed);
68 
69         setContentView(scroller);
70     }
71 }
72