Main.java revision f6c387128427e121477c1b32ad35cdcaa5101ba3 
1/*
2 * Copyright (C) 2008 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
17import java.io.File;
18import java.lang.reflect.Constructor;
19
20/**
21 * DexFile tests (Dalvik-specific).
22 */
23public class Main {
24    private static final String CLASS_PATH = "test-ex.jar";
25    private static final String ODEX_DIR = "/sdcard";
26    //private static final String ODEX_DIR = ".";
27    private static final String ODEX_ALT = "/tmp";
28    private static final String LIB_DIR = "/nowhere/nothing/";
29
30    /**
31     * Create a class loader, explicitly specifying the source DEX and
32     * the location for the optimized DEX.
33     */
34    public static void main(String[] args) {
35        ClassLoader dexClassLoader = getDexClassLoader();
36
37        Class anotherClass;
38        try {
39            anotherClass = dexClassLoader.loadClass("Another");
40        } catch (ClassNotFoundException cnfe) {
41            throw new RuntimeException("Another?");
42        }
43
44        Object another;
45        try {
46            another = anotherClass.newInstance();
47        } catch (IllegalAccessException ie) {
48            throw new RuntimeException("new another", ie);
49        } catch (InstantiationException ie) {
50            throw new RuntimeException("new another", ie);
51        }
52
53        /* not expected to work; just exercises the call */
54        dexClassLoader.getResource("nonexistent");
55
56        System.out.println("done");
57    }
58
59    /*
60     * Create an instance of DexClassLoader.  The test harness doesn't
61     * have visibility into dalvik.system.*, so we do this through
62     * reflection.
63     */
64    private static ClassLoader getDexClassLoader() {
65        String odexDir;
66
67        /*
68        String androidData = System.getenv("ANDROID_DATA");
69        if (androidData == null)
70            androidData = "";
71        odexDir = androidData + "/" + ODEX_DIR;
72        */
73
74        File test = new File(ODEX_DIR);
75        if (test.isDirectory())
76            odexDir = ODEX_DIR;
77        else
78            odexDir = ODEX_ALT;
79        //System.out.println("Output dir is " + odexDir);
80
81        ClassLoader myLoader = Main.class.getClassLoader();
82        Class dclClass;
83        try {
84            dclClass = myLoader.loadClass("dalvik.system.DexClassLoader");
85        } catch (ClassNotFoundException cnfe) {
86            throw new RuntimeException("dalvik.system.DexClassLoader not found");
87        }
88
89        Constructor ctor;
90        try {
91            ctor = dclClass.getConstructor(String.class, String.class,
92                String.class, ClassLoader.class);
93        } catch (NoSuchMethodException nsme) {
94            throw new RuntimeException("DCL ctor", nsme);
95        }
96
97        Object dclObj;
98        try {
99            dclObj = ctor.newInstance(CLASS_PATH, odexDir, LIB_DIR, myLoader);
100        } catch (Exception ex) {
101            throw new RuntimeException("DCL newInstance", ex);
102        }
103
104        return (ClassLoader) dclObj;
105    }
106}
107
108