Retrofit里面的动态代理
2017-01-29 本文已影响224人
大批
Retrofit动态代理部分的代码
EchoApiInterface apiInterface = retrofit.create(EchoApiInterface.class);
static <T> void validateServiceInterface(Class<T> service) {
if (!service.isInterface()) {
throw new IllegalArgumentException("API declarations must be interfaces.");
}
// Prevent API interfaces from extending other interfaces. This not only avoids a bug in
// Android (http://b.android.com/58753) but it forces composition of API declarations which is
// the recommended pattern.
if (service.getInterfaces().length > 0) {
throw new IllegalArgumentException("API interfaces must not extend other interfaces.");
}
}
public <T> T create(final Class<T> service) {
Utils.validateServiceInterface(service);
if (validateEagerly) {
eagerlyValidateMethods(service);
}
return (T) Proxy.newProxyInstance(service.getClassLoader(), new Class<?>[] { service },
new InvocationHandler() {
private final Platform platform = Platform.get();
@Override public Object invoke(Object proxy, Method method, Object... args)
throws Throwable {
// If the method is a method from Object then defer to normal invocation.
if (method.getDeclaringClass() == Object.class) {
return method.invoke(this, args);
}
if (platform.isDefaultMethod(method)) {
return platform.invokeDefaultMethod(method, service, proxy, args);
}
ServiceMethod serviceMethod = loadServiceMethod(method);
OkHttpCall okHttpCall = new OkHttpCall<>(serviceMethod, args);
return serviceMethod.callAdapter.adapt(okHttpCall);
}
});
}
就看看最后的return 部分~~ 的 Proxy
待续。。。
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