启用另一个程序某些方法
DexFile df = new DexFile(new File("/data/app/my_downloaded_lib.apk"));?
ClassLoader cl = getClassLoader();?
Class clazz = df.loadClass("com/my/lib/MyClass", cl);?
2.cl = new DexClassLoader("/full/path/com.example.apk",?
? ? ? ? ? ? ? ? ? ? ? ? getFilesDir().getAbsolutePath(),// /data/data/foo/files?
? ? ? ? ? ? ? ? ? ? ? ? null, ?// native lib path, I haven't used this?
? ? ? ? ? ? ? ? ? ? ? ? MyClass.class.getClassLoader());?
// This doesn't make Class.forName() work, instead I do this:?
Class<?> foo = cl.loadClass("com.example.foo");?
3.
PathClassLoader("/data/app/org.startsmall.myapp.apk", ????????????????ClassLoader.getSystemClassLoader());final String apkFiles = ????????????"/data/app/org.startsmall.myapp.apk:" + // myself ????????????// handlers defined by other developers ????????????"/data/app/" + handlerClassName.substring(0, lastDotPos) + ".apk"; ??????????dalvik.system.PathClassLoader myClassLoader = ????????????new dalvik.system.PathClassLoader( ????????????????apkFiles, ????????????????ClassLoader.getSystemClassLoader()); ???????????// ... ??????????try { ????????????Class<?> handler = ????????????????Class.forName(handlerClassName, true, classLoader); ??????????????// Call reflective APIs. ?????????} catch (ClassNotFoundException e) { ????????????// .....