Java反射
1.方法
//根据类名返回类的对象
Class<?> classBook = Class.forName("com.android.peter.reflectdemo.Book");
//创建实例
Object objectBook = classBook.newInstance();
//转换
Book book = (Book) objectBook;
......
Class<?> classBook = Class.forName("com.android.peter.reflectdemo.Book");
//反射私有的构造方法
Constructor<?> declaredConstructorBook = classBook.getDeclaredConstructor(String.class,String.class);
//取消权限控制检查
declaredConstructorBook.setAccessible(true);
//创建实例
Object objectBook = declaredConstructorBook.newInstance("Android开发艺术探索","任玉刚");
//转换
Book book = (Book) objectBook;
......
Class<?> classBook = Class.forName("com.android.peter.reflectdemo.Book");
Object objectBook = classBook.newInstance();
//反射私有属性
Field fieldTag = classBook.getDeclaredField("TAG");
//取消权限控制检查
fieldTag.setAccessible(true);
//获取该实例的私有属性
String tag = (String) fieldTag.get(objectBook);
......
Class<?> cServiceManager = Class.forName("android.os.ServiceManager");
//反射方法
Method mGetService = cServiceManager.getMethod("getService", String.class);
Object oNotificationManagerService = mGetService.invoke(null, Context.NOTIFICATION_SERVICE);
Class<?> cINotificationManagerStub = Class.forName("android.app.INotificationManager$Stub");
Method mAsInterface = cINotificationManagerStub.getMethod("asInterface",IBinder.class);
Object oINotificationManager = mAsInterface.invoke(null,oNotificationManagerService);
Method mGetZenMode = cINotificationManagerStub.getMethod("getZenMode");
zenMode = (int) mGetZenMode.invoke(oINotificationManager);
