@InfoAnnotation(translate = ApkInfoTranslate.class, elementCount = 7)怎么在java代码中设置elementCount,有几种方法
时间: 2024-04-29 19:23:10 浏览: 18
1. 直接在代码中使用注解,并指定elementCount值:
```
@InfoAnnotation(translate = ApkInfoTranslate.class, elementCount = 7)
public class MyClass {
// ...
}
```
2. 通过反射机制获取注解信息,并设置elementCount值:
```
Class<?> clazz = MyClass.class;
InfoAnnotation annotation = clazz.getAnnotation(InfoAnnotation.class);
if (annotation != null) {
int elementCount = 10; // 设置新的elementCount值
InfoAnnotation newAnnotation = new InfoAnnotation() {
@Override
public Class<? extends Annotation> annotationType() {
return InfoAnnotation.class;
}
@Override
public Class<? extends InfoTranslate> translate() {
return annotation.translate();
}
@Override
public int elementCount() {
return elementCount;
}
};
// 替换旧的注解信息
Method[] methods = clazz.getDeclaredMethods();
for (Method method : methods) {
if (method.isAnnotationPresent(InfoAnnotation.class)) {
Annotation oldAnnotation = method.getAnnotation(InfoAnnotation.class);
Annotation newAnnotationProxy = Proxy.newProxyInstance(
oldAnnotation.getClass().getClassLoader(),
new Class[] { InfoAnnotation.class },
(proxy, method1, args) -> method1.invoke(newAnnotation)
);
AnnotationUtils.setAnnotation(method, newAnnotationProxy);
}
}
}
```
3. 使用Java 8的重复注解和类型注解特性,为同一个类或方法设置多个InfoAnnotation注解,并指定不同的elementCount值:
```
@InfoAnnotation(translate = ApkInfoTranslate.class, elementCount = 7)
@InfoAnnotation(translate = ApkInfoTranslate.class, elementCount = 10)
public class MyClass {
@InfoAnnotation(translate = ApkInfoTranslate.class, elementCount = 5)
@InfoAnnotation(translate = ApkInfoTranslate.class, elementCount = 8)
public void myMethod() {
// ...
}
}
```
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