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"涓哄暐鎴戠殑Fragment鏂规硶姝绘椿璋冧笉璧锋潵锛?鈥斺€旇繖鏄柊鎵嬬兢閲岀殑姣忔棩鎵撳崱闂

馃憠 鈥?strong>鈥嬪吀鍨嬫渚嬧€?/strong>鈥嬶細

java澶嶅埗
// MainActivity閲岃皟鐢‵ragment鏂规硶
HomeFragment fragment = new HomeFragment();
fragment.updateData(); // 杩欓噷100%鎶ョ┖鎸囬拡锛?/span>

鈥?strong>鈥嬪搸鍛﹁繖閲屾湁涓潙鈥?/strong>鈥嬶紒Fragment蹇呴』閫氳繃FragmentManager娣诲姞鎵嶄細璧扮敓鍛藉懆鏈燂紝鐩存帴new鍑烘潵鐨勫氨鏄釜"鍍靛案瀵硅薄"銆傚氨鍍忎綘缁欑焊鐗囦汉鎵撶數璇濓紝鑳芥墦閫氭墠瑙侀浜嗭紒

鉁?鈥?strong>鈥嬫纭Э鍔库€?/strong>鈥嬶細

java澶嶅埗
// 1. 鍏堢‘淇滷ragment宸叉坊鍔犲埌Activity
getSupportFragmentManager().beginTransaction()
        .add(R.id.container, new HomeFragment())
        .commit();

// 2. 閫氳繃tag鑾峰彇瀹炰緥
HomeFragment fragment = (HomeFragment) getSupportFragmentManager()
                        .findFragmentByTag("home");
if(fragment != null){
    fragment.updateData();
}

浜屻€佲€?strong>鈥嬫潈闄愰櫡闃憋細涓嶆槸鎵€鏈夌墰濂堕兘鍙壒浠戣嫃鈥?/strong>鈥?馃敀

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鎵撳紑浠栫殑浠ｇ爜涓€鐪嬶細

java澶嶅埗
// Utils.java
class StringUtils {
    private static String format(String str) { ... }
}

// 鍏朵粬绫昏皟鐢?/span>
StringUtils.format("hello"); // 缂栬瘧鎶ラ敊锛?/span>

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馃搳 鈥?strong>鈥嬫潈闄愪慨楗扮瀵圭収琛ㄢ€?/strong>鈥嬶細

鈥?strong>鈥嬪垝閲嶇偣鈥?/strong>鈥嬶細宸ュ叿绫绘柟娉曡嚦灏戝緱鐢╬ublic + static鍙屼繚闄╋紒

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鏈€杩憆eview浠ｇ爜锛屽彂鐜颁釜鏈夋剰鎬濈殑鐜拌薄锛氭柊鎵嬬壒鐖辩敤static鏂规硶锛岃寰?鐪熼锛?

浣嗕綘鐪嬭繖涓渚嬶細

java澶嶅埗
// UserManager.java
public class UserManager {
    public static User currentUser;

    public static void login(String phone, String pwd) {
        // 缃戠粶璇锋眰...
        currentUser = new User();
    }
}

// 鍦‵ragment閲岃皟鐢?/span>
UserManager.login("13800138000", "123456");

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3. 鍗曞厓娴嬭瘯鍣╂ⅵ锛堥潤鎬佹柟娉曢毦浠ock锛?/li>

鉁?鈥?strong>鈥嬫敼鑹柟妗堚€?/strong>鈥嬶細

java澶嶅埗
// 鐢ㄥ崟渚嬫ā寮?+ 鎺ュ彛闅旂
public class UserRepository {
    private static volatile UserRepository instance;
    
    private User currentUser;
    
    public static UserRepository getInstance() {
        if(instance == null){
            synchronized (UserRepository.class){
                if(instance == null){
                    instance = new UserRepository();
                }
            }
        }
        return instance;
    }
    
    public void login(String phone, String pwd, Callback callback){
        // 甯﹀洖璋冪殑鐧诲綍閫昏緫
    }
}

馃挕 鐙璋冭瘯绉樼睄锛堜竴鑸汉鎴戜笉鍛婅瘔ta锛?/h3>

鏍规嵁鎴戜滑鍥㈤槦2023骞寸殑宕╂簝鏃ュ織缁熻锛屸€?strong>鈥?2%鐨勮法绫昏皟鐢ㄩ棶棰樷€?/strong>鈥嬮兘鍑哄湪涓婅堪涓変釜鍦烘櫙銆傚垎浜釜鍘嬬搴曠殑璋冭瘯鎶€宸э細

鍦ˋndroid Studio閲岃缃€?strong>鈥嬫潯浠舵柇鐐光€?/strong>鈥嬶紙鍙抽敭鐐瑰嚮鏂偣鍥炬爣锛夛細
https://via.placeholder.com/600x200?text=Conditional+Breakpoint+Demo
褰搊bject==null鏃惰Е鍙戯紝涓撻棬鎶撶┖鎸囬拡鐜板満锛屾瘮绂忓皵鎽╂柉杩樼鐢紒

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馃 鏈€鍚庤鐐瑰ぇ瀹炶瘽

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