1/*
2 * Copyright (C) 2012 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 com.example.android.bitmapfun.util;
18
19import com.example.android.bitmapfun.ui.ImageDetailActivity;
20import com.example.android.bitmapfun.ui.ImageGridActivity;
21
22import android.annotation.TargetApi;
23import android.os.Build;
24import android.os.StrictMode;
25
26/**
27 * Class containing some static utility methods.
28 */
29public class Utils {
30    private Utils() {};
31
32    @TargetApi(11)
33    public static void enableStrictMode() {
34        if (Utils.hasGingerbread()) {
35            StrictMode.ThreadPolicy.Builder threadPolicyBuilder =
36                    new StrictMode.ThreadPolicy.Builder()
37                            .detectAll()
38                            .penaltyLog();
39            StrictMode.VmPolicy.Builder vmPolicyBuilder =
40                    new StrictMode.VmPolicy.Builder()
41                            .detectAll()
42                            .penaltyLog();
43
44            if (Utils.hasHoneycomb()) {
45                threadPolicyBuilder.penaltyFlashScreen();
46                vmPolicyBuilder
47                        .setClassInstanceLimit(ImageGridActivity.class, 1)
48                        .setClassInstanceLimit(ImageDetailActivity.class, 1);
49            }
50            StrictMode.setThreadPolicy(threadPolicyBuilder.build());
51            StrictMode.setVmPolicy(vmPolicyBuilder.build());
52        }
53    }
54
55    public static boolean hasFroyo() {
56        // Can use static final constants like FROYO, declared in later versions
57        // of the OS since they are inlined at compile time. This is guaranteed behavior.
58        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.FROYO;
59    }
60
61    public static boolean hasGingerbread() {
62        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD;
63    }
64
65    public static boolean hasHoneycomb() {
66        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB;
67    }
68
69    public static boolean hasHoneycombMR1() {
70        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR1;
71    }
72
73    public static boolean hasJellyBean() {
74        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN;
75    }
76}
77