最近在看React-native,对内部实现很感兴趣,自己写了Module注册进去,并且在js中调用,很好奇自己的方法是怎么暴露给js的,看了BaseJavaModule的源码,里面有方法是如何暴露的。
@Override public final Map<String, NativeMethod> getMethods() { Map<String, NativeMethod> methods = new HashMap<String, NativeMethod>(); Method[] targetMethods = getClass().getDeclaredMethods(); for (int i = 0; i < targetMethods.length; i++) { Method targetMethod = targetMethods[i]; //找有@ReactMethod注解的方法 if (targetMethod.getAnnotation(ReactMethod.class) != null) { String methodName = targetMethod.getName(); if (methods.containsKey(methodName)) { // We do not support method overloading since js sees a function as an object regardless // of number of params. throw new IllegalArgumentException( "Java Module " + getName() + " method name already registered: " + methodName); } methods.put(methodName, new JavaMethod(targetMethod)); } } return methods; }
时间: 2024-08-04 14:20:43