Most visited

Recently visited

Results for

Added in API level 1

InvocationHandler

public interface InvocationHandler

java.lang.reflect.InvocationHandler

InvocationHandler是由代理实例的 调用处理程序实现的接口。

每个代理实例都有一个关联的调用处理程序。 当在代理实例上调用一个方法时，方法调用将被编码并分派给其调用处理程序的方法invoke 。

也可以看看：

Summary

Public methods
abstract Object invoke(Object proxy, 方法 method, Object[] args)

在代理实例上处理方法调用并返回结果。

Public methods

invoke

Added in API level 1 
Object invoke (Object proxy, 
                方法 method, 
                Object[] args)

在代理实例上处理方法调用并返回结果。 当在与其关联的代理实例上调用方法时，将在调用处理程序上调用此方法。

Parameters
proxy Object: the proxy instance that the method was invoked on
method 方法: the 方法 instance corresponding to the interface method invoked on the proxy instance. The declaring class of the 方法 object will be the interface that the method was declared in, which may be a superinterface of the proxy interface that the proxy class inherits the method through.
args Object: an array of objects containing the values of the arguments passed in the method invocation on the proxy instance, or null if interface method takes no arguments. Arguments of primitive types are wrapped in instances of the appropriate primitive wrapper class, such as java.lang.Integer or java.lang.Boolean.
Returns
Object the value to return from the method invocation on the proxy instance. If the declared return type of the interface method is a primitive type, then the value returned by this method must be an instance of the corresponding primitive wrapper class; otherwise, it must be a type assignable to the declared return type. If the value returned by this method is null and the interface method's return type is primitive, then a NullPointerException will be thrown by the method invocation on the proxy instance. If the value returned by this method is otherwise not compatible with the interface method's declared return type as described above, a ClassCastException will be thrown by the method invocation on the proxy instance.
Throws
Throwable the exception to throw from the method invocation on the proxy instance. The exception's type must be assignable either to any of the exception types declared in the throws clause of the interface method or to the unchecked exception types java.lang.RuntimeException or java.lang.Error. If a checked exception is thrown by this method that is not assignable to any of the exception types declared in the throws clause of the interface method, then an UndeclaredThrowableException containing the exception that was thrown by this method will be thrown by the method invocation on the proxy instance.

也可以看看：

Android开发手册

Hooray!