反射api

There are several Reflection APIs which return classes but these may only be accessed if a Class has already been obtained either directly or indirectly. Class.getSuperclass() Returns the super class for the given class. Class c = javax.swing.JButton.class.getSuperclass(); The super class of javax.swing.JButton is javax.swing.AbstractButton. Class.getClasses() Returns all the public classes, interfaces, and enums that are members of the class including inherited members. Class<?>[] c = Character.class.getClasses(); Character contains two member classes Character.Subset and Character.UnicodeBlock. Class.getDeclaredClasses() Returns all of the classes interfaces, and enums that are explicitly declared in this class. Class<?>[] c = Character.class.getDeclaredClasses(); Character contains two public member classes Character.Subset and Character.UnicodeBlock and one private class Character.CharacterCache. Class.getDeclaringClass() java.lang.reflect.Field.getDeclaringClass() java.lang.reflect.Method.getDeclaringClass() java.lang.reflect.Constructor.getDeclaringClass() Returns the Class in which these members were declared. Anonymous Class Declarations will not have a declaring class but will have an enclosing class. import java.lang.reflect.Field; Field f = System.class.getField("out"); Class c = f.getDeclaringClass(); The field out is declared in System. public class MyClass { static Object o = new Object() { public void m() {} }; static Class<c> = o.getClass().getEnclosingClass(); } The declaring class of the anonymous class defined by o is null. Class.getEnclosingClass() Returns the immediately enclosing class of the class. Class c = Thread.State.class().getEnclosingClass(); The enclosing class of the enum Thread.State is Thread. public class MyClass { static Object o = new Object() { public void m() {} }; static Class<c> = o.getClass().getEnclosingClass(); } The anonymous class defined by o is enclosed by MyClass.

这个回答有点晚了，但我认为在匿名处理程序类的上下文中还有另一种方法可以做到这一点。

比方说:

class A {
    void foo() {
        obj.addHandler(new Handler() {
            void bar() {
                String className=A.this.getClass().getName();
                // ...
            }
        });
    }
}

它会达到同样的结果。此外，它实际上非常方便，因为每个类都是在编译时定义的，因此不会破坏动态性。

在此之上，如果类确实是嵌套的，即A实际上是由B包围的，则B的类可以很容易地称为:

B.this.getClass().getName()

试试这个 this.getClass(). getcanonicalname()或this.getClass(). getsimplename()。如果是匿名类，则使用this.getClass().getSuperclass().getName()

我发现这适用于我的代码，但是我的代码是在for循环中从数组中获取类。

String className="";

className = list[i].getClass().getCanonicalName();

System.out.print(className); //Use this to test it works

两个答案的组合。还输出一个方法名:

Class thisClass = new Object(){}.getClass();
String className = thisClass.getEnclosingClass().getSimpleName();
String methodName = thisClass.getEnclosingMethod().getName();
Log.d("app", className + ":" + methodName);

反射api

There are several Reflection APIs which return classes but these may only be accessed if a Class has already been obtained either directly or indirectly. Class.getSuperclass() Returns the super class for the given class. Class c = javax.swing.JButton.class.getSuperclass(); The super class of javax.swing.JButton is javax.swing.AbstractButton. Class.getClasses() Returns all the public classes, interfaces, and enums that are members of the class including inherited members. Class<?>[] c = Character.class.getClasses(); Character contains two member classes Character.Subset and Character.UnicodeBlock. Class.getDeclaredClasses() Returns all of the classes interfaces, and enums that are explicitly declared in this class. Class<?>[] c = Character.class.getDeclaredClasses(); Character contains two public member classes Character.Subset and Character.UnicodeBlock and one private class Character.CharacterCache. Class.getDeclaringClass() java.lang.reflect.Field.getDeclaringClass() java.lang.reflect.Method.getDeclaringClass() java.lang.reflect.Constructor.getDeclaringClass() Returns the Class in which these members were declared. Anonymous Class Declarations will not have a declaring class but will have an enclosing class. import java.lang.reflect.Field; Field f = System.class.getField("out"); Class c = f.getDeclaringClass(); The field out is declared in System. public class MyClass { static Object o = new Object() { public void m() {} }; static Class<c> = o.getClass().getEnclosingClass(); } The declaring class of the anonymous class defined by o is null. Class.getEnclosingClass() Returns the immediately enclosing class of the class. Class c = Thread.State.class().getEnclosingClass(); The enclosing class of the enum Thread.State is Thread. public class MyClass { static Object o = new Object() { public void m() {} }; static Class<c> = o.getClass().getEnclosingClass(); } The anonymous class defined by o is enclosed by MyClass.