android之getDeclaredFields等函数介绍

package com.exmple.getdeclaredfieldstest;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.util.Log;

import java.lang.reflect.Field;
import java.lang.reflect.Method;

/**
 * @author Lee
 * @date 20/12/14
 */
public class MainActivity extends AppCompatActivity {

    String LeeOne = "China Lee One";
    String LeeTwo = "China Lee Two";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Field[] fields = MainActivity.class.getDeclaredFields();

        for (Field field: fields) {
            Log.d("MainActivity", "---test---getDeclaredFields--toString-" + field.toString());
            Log.d("MainActivity", "---test---getDeclaredFields--getName-" + field.getName());
        }

        Field[] fieldAll = MainActivity.class.getFields();
        for (Field field: fields) {
            Log.d("MainActivity", "---test---getFields--toString-" + field.toString());
            Log.d("MainActivity", "---test---getFields--getName-" + field.getName());
        }

        Method[] methods = MainActivity.class.getDeclaredMethods();
        for (Method method: methods) {
            Log.d("MainActivity", "---test---getDeclaredMethods--toString-" + method.toString());
            Log.d("MainActivity", "---test---getDeclaredMethods--getName-" + method.getName());
        }

        Log.d("MainActivity", "---test---getDeclaredMethods--sizeof-" + methods.length);
        Method[] methodAll = MainActivity.class.getMethods();
        Log.d("MainActivity", "---test---getMethods--sizeof-" + methodAll.length);
    }

    public void print() {
        return;
    }
}