Android浣跨敤娉ㄨВ浠ｆ浛鏋氫妇浠庤€岃妭鐪佺郴缁熶娇鐢ㄧ殑鍐呭瓨寮€閿€

Posted 2021-03-13

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涓€銆両nt绫诲瀷娉ㄨВ妫€鏌ョ被鍨嬪畨鍏?/p>

package com.yw.enumproxylib;

import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;

import androidx.annotation.IntDef;

/**
 * 瀹氫箟涓€涓猧nt绫诲瀷鐨勬敞瑙? * 鐢ㄦ敞瑙ｄ唬鏇挎灇涓撅紝鍋氬埌绫诲瀷瀹夊叏
 * create by yangwei
 * on 2020-01-30 21:34
 */
public class EnumProxy {
    public static final int READ_CAR = 0;//绾㈣壊鐨勬苯杞?/span>
    public static final int GREEN_CAR = 1;//缁胯壊鐨勬苯杞?/span>
    public static final int YELLOW_CAR = 2;//榛勮壊鐨勬苯杞?/span>


    @IntDef({READ_CAR, GREEN_CAR, YELLOW_CAR})
    @Retention(RetentionPolicy.SOURCE)//婧愮爜绾у埆
    public @interface CAR_Enum {

    }

    /**
     * 鑾峰彇姹借溅绫诲瀷
     *
     * @param car
     * @return
     */
    public static int getCar(@CAR_Enum int car) {
        switch (car) {
            case READ_CAR:
                return 0;
            case GREEN_CAR:
                return 1;
            case YELLOW_CAR:
                return 2;
        }
        return -1;
    }
}

浜屻€丼tring绫诲瀷娉ㄨВ妫€鏌ョ被鍨嬪畨鍏?/p>

package com.yw.enumproxylib;

import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;

import androidx.annotation.StringDef;

/**
 * 瀹氫箟涓€涓猻tring绫诲瀷鐨勬敞瑙ｏ紝鐢ㄤ簬妫€鏌ユ槦鏈熺殑绫诲瀷瀹夊叏銆? * create by yangwei
 * on 2020-01-30 22:04 week
 */
public class StringEnum {

    public static final String MONDAY = "monday";
    public static final String TUESDAY = "tuesday";
    public static final String WENDESDAY = "wendesday";
    public static final String THURSDAY = "thursday";
    public static final String FRIDAY = "friday";
    public static final String SATURDAY = "saturday";
    public static final String WEEKDAY = "weekday";

    @StringDef({MONDAY, TUESDAY, WENDESDAY, THURSDAY, FRIDAY, SATURDAY, WEEKDAY})//姝ゅ瀹氫箟娉ㄨВ鐨勫€煎彧鑳芥槸杩欏嚑涓?/span>
    @Retention(RetentionPolicy.SOURCE)//缂栬瘧鏃舵敞瑙ｏ紝婧愮爜绾ф鏌?/span>
    public @interface Week {

    }

    /**
     * 鑾峰彇鏃ユ湡
     *
     * @param week
     * @return
     */
    public static String getWeek(@Week String week) {
        switch (week) {
            case MONDAY:
                return "鏄熸湡涓€";
            case TUESDAY:
                return "鏄熸湡浜?;
            case WENDESDAY:
                return "鏄熸湡涓?;
            case THURSDAY:
                return "鏄熸湡鍥?;
            case FRIDAY:
                return "鏄熸湡浜?;
            case SATURDAY:
                return "鏄熸湡鍏?;
            case WEEKDAY:
                return "鏄熸湡鏃?;
        }
        return null;
    }
}

涓夈€佺敤鏉ユ鏌ョ被鍨嬪畨鍏ㄧ殑MainActivity锛屼粠涓嬮潰鍙互鐪嬪埌锛屽綋浣跨敤EnumProxy.getCar杈撳叆鍙傛暟鐨勬椂鍊欙紝濡傛灉鐩存帴杈撳叆涓€涓暣鏁板垯缂栬瘧涓嶉€氳繃銆傚綋杈撳叆鎴戜滑瀹氫箟鐨凟numProxy.GREEN_CAR缂栬瘧鎵嶉€氳繃銆?/p>

銆€銆€鍚岀悊StringEnum涔熻兘妫€鏌ョ被鍨嬪畨鍏ㄣ€?/p>

package com.yw.enumproxy;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import com.yw.enumproxylib.EnumProxy;
import com.yw.enumproxylib.StringEnum;

/**
 * 娴嬭瘯渚嬪瓙
 */
public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        int car_black = 10;
        int bk = EnumProxy.getCar(car_black);//姝ゅ绫诲瀷妫€鏌ヤ笉閫氳繃
        int ck = EnumProxy.getCar(EnumProxy.GREEN_CAR);//绫诲瀷妫€鏌ラ€氳繃


        String str = "friday";
        String week1 = StringEnum.getWeek(str);//鐩存帴璧嬪€糞tring鏃剁被鍨嬫鏌ヤ笉閫氳繃
        String week2 = StringEnum.getWeek(StringEnum.FRIDAY);//璧嬪€煎畾涔夊ソ鐨勫€兼椂绫诲瀷妫€鏌ラ€氳繃
    }
}

 

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