{"id":244,"date":"2026-09-06T00:43:45","date_gmt":"2026-09-05T16:43:45","guid":{"rendered":"https:\/\/www.ziliaochi.cn\/index.php\/2026\/09\/06\/interview-android-core\/"},"modified":"2026-09-06T00:43:45","modified_gmt":"2026-09-05T16:43:45","slug":"interview-android-core","status":"publish","type":"post","link":"https:\/\/www.ziliaochi.cn\/index.php\/2026\/09\/06\/interview-android-core\/","title":{"rendered":"Android \u9762\u8bd5\u9ad8\u9891 25 \u95ee\uff1aHandler\u3001Binder\u3001\u56db\u5927\u7ec4\u4ef6\u4e0e Compose"},"content":{"rendered":"
\n
\u5173\u952e\u8bcd<\/span>Android \u9762\u8bd5\u3001Handler \u673a\u5236\u3001Binder\u3001Activity \u751f\u547d\u5468\u671f\u3001Jetpack Compose<\/div>\n
\n
\u76ee\u5f55<\/div>\n
    \n
  1. \u4e00\u3001Handler\uff1a\u9762\u8bd5\u7684\u7b2c\u4e00\u9053\u5206\u6c34\u5cad<\/a><\/li>\n
  2. \u4e8c\u3001Binder\uff1aAndroid \u7684 IPC \u5fc3\u810f<\/a><\/li>\n
  3. \u4e09\u3001\u56db\u5927\u7ec4\u4ef6\u4e0e\u751f\u547d\u5468\u671f<\/a><\/li>\n
  4. \u56db\u3001View \u7ed8\u5236\u4e0e\u6027\u80fd<\/a><\/li>\n
  5. \u4e94\u3001Jetpack Compose\uff1a2026 \u5e74\u7684\u5fc5\u8003\u533a<\/a><\/li>\n
  6. \u516d\u3001\u5c0f\u7ed3<\/a><\/li>\n<\/ol>\n<\/div>\n

    Android \u9762\u8bd5\u7684”\u539f\u7406\u9898”\u6709\u975e\u5e38\u7a33\u5b9a\u7684\u6838\u5fc3\u533a\uff1a\u56db\u5927\u7ec4\u4ef6\u3001Handler\u3001Binder\u3001View \u7ed8\u5236\u3001\u5185\u5b58\u6cc4\u6f0f\u3001Compose<\/strong>\u3002\u8fd9\u4e9b\u5185\u5bb9\u4e0d\u968f\u7248\u672c\u5267\u70c8\u53d8\u52a8\uff0c\u4f46\u8003\u5bdf\u6df1\u5ea6\u5dee\u5f02\u5f88\u5927\u2014\u2014\u540c\u6837\u95ee”Handler \u539f\u7406”\uff0c\u6709\u4eba\u8bf4\u5230 Looper \u5c31\u505c\u4e86\uff0c\u6709\u4eba\u80fd\u8bb2\u6e05\u4e3a\u4ec0\u4e48\u4e3b\u7ebf\u7a0b Looper \u6b7b\u5faa\u73af\u4e0d\u4f1a ANR<\/strong>\u3002<\/p>\n

    \u672c\u6587\u6309\u9ad8\u9891\u8003\u70b9\u7ec4\u7ec7\uff0c\u6bcf\u9898\u7ed9\u51fa”\u6807\u51c6\u7b54\u6cd5 + \u8ffd\u95ee\u9677\u9631 + \u9762\u8bd5\u5b98\u60f3\u542c\u7684\u90a3\u53e5\u8bdd”\u3002\u7248\u672c\u80cc\u666f\uff1aAndroid 17 \u5df2 GA\uff0c\u4e24\u7aef target SDK \u7684\u5e74\u5ea6\u5347\u7ea7\u7a97\u53e3\u540c\u65f6\u751f\u6548\u3002<\/p>\n

    \"Handler
    Handler \u673a\u5236\uff1aMessage \u2192 MessageQueue \u2192 Looper \u2192 Handler<\/figcaption><\/figure>\n

    \u4e00\u3001Handler\uff1a\u9762\u8bd5\u7684\u7b2c\u4e00\u9053\u5206\u6c34\u5cad<\/h2>\n

    Q1\uff1aHandler \u673a\u5236\u6d89\u53ca\u54ea\u51e0\u4e2a\u7c7b\uff1f\u5404\u81ea\u505a\u4ec0\u4e48\uff1f<\/h3>\n

    \u56db\u4e2a\u89d2\u8272\u5fc5\u987b\u8bf4\u5168\uff1a<\/p>\n

      \n
    • Message<\/code><\/strong>\uff1a\u6d88\u606f\u8f7d\u4f53\u3002what<\/code>\/arg1<\/code>\/obj<\/code>\/target<\/code>\uff0c\u4ee5\u53ca\u7528\u4e8e\u590d\u7528\u7684\u6d88\u606f\u6c60<\/strong>\uff08obtain()<\/code> \u4ece\u94fe\u8868\u4e2d\u53d6\uff0c\u907f\u514d\u9891\u7e41\u521b\u5efa\u5bf9\u8c61\uff09\u3002<\/li>\n
    • MessageQueue<\/code><\/strong>\uff1a\u6309 when<\/code>\uff08\u6267\u884c\u65f6\u95f4\uff09\u6392\u5e8f\u7684\u5355\u5411\u94fe\u8868<\/strong>\u3002\u6ce8\u610f\u662f\u94fe\u8868\u4e0d\u662f\u961f\u5217\uff0c\u63d2\u5165\u662f\u6309\u65f6\u95f4\u505a\u6709\u5e8f\u63d2\u5165\u3002<\/li>\n
    • Looper<\/code><\/strong>\uff1a\u6301\u6709 MessageQueue\uff0cloop()<\/code> \u65b9\u6cd5\u91cc\u6b7b\u5faa\u73af\u53d6\u6d88\u606f\u5e76\u5206\u53d1\u3002\u6bcf\u4e2a\u7ebf\u7a0b\u6700\u591a\u4e00\u4e2a Looper<\/strong>\uff0c\u7528 ThreadLocal \u4fdd\u8bc1\u7ebf\u7a0b\u9694\u79bb\u3002<\/li>\n
    • Handler<\/code><\/strong>\uff1a\u53d1\u9001\u6d88\u606f\u5230 MessageQueue\uff0c\u5e76\u5728 dispatchMessage()<\/code> \u91cc\u5904\u7406\u3002<\/li>\n<\/ul>\n
      \/\/ loop() \u7684\u6838\u5fc3\u903b\u8f91\uff08\u7b80\u5316\uff09\npublic static void loop() {\n    final Looper me = myLooper();\n    final MessageQueue queue = me.mQueue;\n    for (;;) {\n        Message msg = queue.next();   \/\/ \u6ca1\u6d88\u606f\u65f6\u5728\u8fd9\u91cc\u963b\u585e\uff08nativePollOnce\uff09\n        if (msg == null) return;\n        msg.target.dispatchMessage(msg);\n        msg.recycleUnchecked();        \/\/ \u56de\u6536\u8fdb\u6d88\u606f\u6c60\n    }\n}<\/code><\/pre>\n
      Q2\uff1a\u4e3b\u7ebf\u7a0b\u7684 Looper \u6b7b\u5faa\u73af\u4e3a\u4ec0\u4e48\u4e0d\u4f1a ANR\uff1f<\/h3>\n
      \u8fd9\u662f Handler \u6700\u7ecf\u5178\u7684\u8ffd\u95ee\uff0c\u7b54\u4e0d\u4e0a\u6765\u57fa\u672c\u5224\u5b9a\u4e3a”\u80cc\u8fc7\u4f46\u6ca1\u7406\u89e3”<\/strong>\u3002<\/p>\n
      \u5173\u952e\u70b9\uff1aANR \u4e0d\u662f”\u5361\u4f4f”\uff0c\u800c\u662f”\u8be5\u5904\u7406\u7684\u4e8b\u4ef6\u6ca1\u5728\u89c4\u5b9a\u65f6\u95f4\u5185\u5904\u7406\u5b8c”<\/strong>\u3002\u4e3b\u7ebf\u7a0b Looper \u7684\u6b7b\u5faa\u73af\uff0c\u5728\u6ca1\u6709\u6d88\u606f\u65f6\u662f\u901a\u8fc7 nativePollOnce<\/code> \u8fdb\u5165 epoll \u7b49\u5f85\u7761\u7720\u7684\uff0c\u4e0d\u6d88\u8017 CPU<\/strong>\uff1b\u6709\u6d88\u606f\u5230\u6765\u65f6\u88ab\u5524\u9192\u7ee7\u7eed\u6267\u884c\u3002\u6240\u8c13 ANR\uff0c\u662f\u67d0\u6761\u6d88\u606f\uff08\u5982 INPUT<\/code> \u4e8b\u4ef6\u3001BroadcastReceiver.onReceive<\/code>\uff09\u6267\u884c\u8d85\u8fc7\u9608\u503c\uff08\u8f93\u5165\u4e8b\u4ef6 5s\u3001\u524d\u53f0\u5e7f\u64ad 10s\u3001Service 20s\uff09\uff0c\u800c\u975e\u5faa\u73af\u672c\u8eab\u3002<\/p>\n
      \n
      \u4e00\u53e5\u8bdd\u7248\uff1a\u6b7b\u5faa\u73af\u5728”\u7b49\u6d88\u606f”\uff0c\u4e0d\u5728”\u5fd9\u7b49”\uff1b\u5524\u9192\u9760 Linux \u7684 epoll \u673a\u5236\uff1bANR \u662f\u5355\u6761\u6d88\u606f\u6267\u884c\u8d85\u65f6\uff0c\u4e0d\u662f\u5faa\u73af\u5bfc\u81f4\u7684\u3002<\/strong><\/p>\n<\/blockquote>\n
      Q3\uff1aHandler.postDelayed<\/code> \u662f\u7cbe\u786e\u5ef6\u65f6\u5417\uff1f<\/h3>\n
      \u4e0d\u662f\u3002<\/strong>\u5b83\u53ea\u662f\u5728 MessageQueue \u91cc\u6309 when = \u5f53\u524d\u65f6\u95f4 + delay<\/code> \u63d2\u5165\uff0c\u5230\u70b9\u540e\u80fd\u5426\u7acb\u5373\u6267\u884c\u53d6\u51b3\u4e8e\u524d\u9762\u6709\u6ca1\u6709\u79ef\u538b\u7684\u6d88\u606f<\/strong>\u3002\u5982\u679c\u4e3b\u7ebf\u7a0b\u6b63\u88ab\u4e00\u4e2a\u8017\u65f6\u64cd\u4f5c\u5360\u7740\uff0c\u5ef6\u65f6\u4f1a\u88ab\u987a\u5ef6\u3002\u6b64\u5916\u7cfb\u7edf\u8fd8\u53ef\u80fd\u56e0\u4e3a\u5bf9\u9f50\u5524\u9192\uff08Alarm alignment\uff09\u3001Doze \u6a21\u5f0f<\/strong>\u505a\u6279\u91cf\u5ef6\u8fdf\u3002<\/p>\n
      \u9700\u8981\u7cbe\u786e\u8ba1\u65f6\u7684\u573a\u666f\uff08\u5982\u5012\u8ba1\u65f6\uff09\u5e94\u5f53\u7528\u7cfb\u7edf\u65f6\u95f4\u6233\u5b9e\u65f6\u8ba1\u7b97\u5269\u4f59\u503c<\/strong>\uff0c\u800c\u4e0d\u662f\u7d2f\u52a0 postDelayed \u7684 delay\u3002<\/p>\n
      Q4\uff1aHandler \u5f15\u8d77\u5185\u5b58\u6cc4\u6f0f\u7684\u539f\u56e0\u4e0e\u89e3\u6cd5\uff1f<\/h3>\n
      \u6cc4\u6f0f\u94fe\uff1a<\/strong>\u5ef6\u65f6\u6d88\u606f msg.target<\/code> \u6301\u6709 Handler \u2192 Handler \u662f\u975e\u9759\u6001\u5185\u90e8\u7c7b\uff0c\u9690\u5f0f\u6301\u6709 Activity \u2192 Activity \u5df2 finish \u4f46\u6d88\u606f\u8fd8\u5728\u961f\u5217\u91cc \u2192 Activity \u65e0\u6cd5\u56de\u6536\u3002<\/p>\n
      \/\/ \u53cd\u4f8b\uff1a\u975e\u9759\u6001\u5185\u90e8\u7c7b + \u5ef6\u65f6\u6d88\u606f\nclass MainActivity : AppCompatActivity() {\n    private val handler = Handler(Looper.getMainLooper())   \/\/ \u9690\u5f0f\u6301\u6709 Activity\n    override fun onCreate(...) {\n        handler.postDelayed({ updateUI() }, 60_000)\n    }\n}\n\n\/\/ \u6b63\u4f8b1\uff1a\u9759\u6001\u5185\u90e8\u7c7b + \u5f31\u5f15\u7528\nclass SafeHandler(activity: MainActivity) : Handler(Looper.getMainLooper()) {\n    private val ref = WeakReference(activity)\n    override fun handleMessage(msg: Message) {\n        ref.get()?.updateUI()\n    }\n}\n\n\/\/ \u6b63\u4f8b2\uff1a\u751f\u547d\u5468\u671f\u611f\u77e5\uff0c\u9500\u6bc1\u65f6\u6e05\u7a7a\u6d88\u606f\noverride fun onDestroy() {\n    super.onDestroy()\n    handler.removeCallbacksAndMessages(null)   \/\/ \u5173\u952e\uff1a\u79fb\u9664\u6240\u6709\u56de\u8c03\n}<\/code><\/pre>\n
      \u4e8c\u3001Binder\uff1aAndroid \u7684 IPC \u5fc3\u810f<\/h2>\n
      Q5\uff1a\u4e3a\u4ec0\u4e48 Android \u7528 Binder \u800c\u4e0d\u7528 Socket \u6216\u5171\u4eab\u5185\u5b58\uff1f<\/h3>\n
      \u4ece\u4e09\u4e2a\u7ef4\u5ea6\u5bf9\u6bd4\uff1a<\/p>\n\n\n\n\n\n\n\n
      \u7ef4\u5ea6<\/th>\nBinder<\/th>\nSocket<\/th>\n\u5171\u4eab\u5185\u5b58<\/th>\n<\/tr>\n<\/thead>\n
      \u62f7\u8d1d\u6b21\u6570<\/td>\n1 \u6b21<\/strong><\/td>\n2 \u6b21<\/td>\n0 \u6b21<\/td>\n<\/tr>\n
      \u5b89\u5168\u6027<\/td>\n\u5185\u6838\u6821\u9a8c UID\/PID<\/strong><\/td>\n\u4f9d\u8d56\u4e0a\u5c42\u534f\u8bae<\/td>\n\u65e0\u8bbf\u95ee\u63a7\u5236<\/td>\n<\/tr>\n
      \u4f7f\u7528\u6a21\u578b<\/td>\nC\/S \u67b6\u6784\uff0c\u9762\u5411\u5bf9\u8c61\u8c03\u7528<\/td>\n\u5b57\u8282\u6d41<\/td>\n\u9700\u81ea\u884c\u5904\u7406\u540c\u6b65<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
      \u8981\u70b9\u5c55\u5f00\uff1a<\/p>\n
        \n
      • \u6027\u80fd<\/strong>\uff1aBinder \u901a\u8fc7 mmap<\/code> \u628a\u5185\u6838\u7f13\u51b2\u533a\u540c\u65f6\u6620\u5c04\u5230\u5185\u6838\u7a7a\u95f4\u548c\u670d\u52a1\u7aef\u7528\u6237\u7a7a\u95f4\uff0c\u6570\u636e\u53ea\u9700\u4ece\u53d1\u9001\u65b9\u7528\u6237\u7a7a\u95f4\u62f7\u8d1d\u4e00\u6b21\u5230\u5185\u6838<\/strong>\uff0c\u63a5\u6536\u65b9\u76f4\u63a5\u8bfb\u6620\u5c04\u533a\u3002\u5171\u4eab\u5185\u5b58\u867d\u7136\u96f6\u62f7\u8d1d\uff0c\u4f46\u9700\u8981\u81ea\u5df1\u89e3\u51b3\u5e76\u53d1\u540c\u6b65\uff0c\u4e14\u6ca1\u6709\u8bbf\u95ee\u63a7\u5236\u3002<\/li>\n
      • \u5b89\u5168<\/strong>\uff1aBinder \u9a71\u52a8\u5728\u5185\u6838\u6001\u8bb0\u5f55\u8c03\u7528\u65b9\u7684 UID\/PID\uff0c\u670d\u52a1\u7aef\u53ef\u4ee5\u636e\u6b64\u505a\u6743\u9650\u6821\u9a8c<\/strong>\u2014\u2014\u8fd9\u662f Android \u6743\u9650\u4f53\u7cfb\u7684\u57fa\u77f3\u3002Socket \u548c\u5171\u4eab\u5185\u5b58\u62ff\u4e0d\u5230\u53ef\u9760\u7684\u8eab\u4efd\u6807\u8bc6\u3002<\/li>\n
      • \u6613\u7528\u6027<\/strong>\uff1aBinder \u662f\u9762\u5411\u5bf9\u8c61\u7684\uff08AIDL \u751f\u6210\u7684\u4ee3\u7406\u6a21\u5f0f\uff09\uff0c\u8c03\u7528\u8fdc\u7a0b\u65b9\u6cd5\u50cf\u8c03\u7528\u672c\u5730\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n
        Q6\uff1aBinder \u901a\u4fe1\u7684\u5b8c\u6574\u6d41\u7a0b\uff1f<\/h3>\n
          \n
        1. \u6ce8\u518c<\/strong>\uff1aServer \u5411 ServiceManager<\/strong>\uff08\u672c\u8eab\u4e5f\u662f\u4e00\u4e2a Binder \u670d\u52a1\uff0chandle = 0\uff09\u6ce8\u518c\u670d\u52a1\u3002<\/li>\n
        2. \u83b7\u53d6<\/strong>\uff1aClient \u5411 ServiceManager \u67e5\u8be2\uff0c\u62ff\u5230\u670d\u52a1\u7684\u4ee3\u7406\u5bf9\u8c61\uff08BinderProxy<\/code>\uff09\u3002<\/li>\n
        3. \u8c03\u7528<\/strong>\uff1aClient \u8c03\u7528\u4ee3\u7406\u65b9\u6cd5\uff0c\u6570\u636e\u6253\u5305\u6210 Parcel<\/code>\uff0c\u901a\u8fc7 transact()<\/code> \u53d1\u7ed9 Binder \u9a71\u52a8\u3002<\/li>\n
        4. \u9a71\u52a8\u8f6c\u53d1<\/strong>\uff1a\u9a71\u52a8\u6839\u636e handle \u627e\u5230\u76ee\u6807\u8fdb\u7a0b\uff0c\u62f7\u8d1d\u4e00\u6b21\u6570\u636e<\/strong>\uff0c\u628a\u8bf7\u6c42\u52a0\u5165\u670d\u52a1\u7aef\u7684 todo \u961f\u5217\uff0c\u5524\u9192\u670d\u52a1\u7aef Binder \u7ebf\u7a0b\u3002<\/li>\n
        5. \u6267\u884c\u4e0e\u8fd4\u56de<\/strong>\uff1a\u670d\u52a1\u7aef\u5728 onTransact()<\/code> \u4e2d\u89e3\u5305\u6267\u884c\uff0c\u7ed3\u679c\u6cbf\u539f\u8def\u8fd4\u56de\u3002<\/li>\n<\/ol>\n
          \u540c\u6b65\u8c03\u7528\u65f6\u5ba2\u6237\u7aef\u7ebf\u7a0b\u4f1a\u963b\u585e<\/strong>\uff0c\u6240\u4ee5\u8981\u907f\u514d\u5728\u4e3b\u7ebf\u7a0b<\/strong>\u8c03\u7528\u8017\u65f6\u8fdc\u7a0b\u65b9\u6cd5\u3002<\/p>\n
          Q7\uff1aAIDL \u7684 oneway<\/code>\u3001in<\/code>\/out<\/code>\/inout<\/code> \u662f\u4ec0\u4e48\uff1f<\/h3>\n
            \n
          • oneway<\/code><\/strong>\uff1a\u5f02\u6b65\u8c03\u7528\uff0c\u7acb\u5373\u8fd4\u56de\u4e0d\u963b\u585e<\/strong>\uff0c\u4e5f\u4e0d\u63a5\u6536\u8fd4\u56de\u503c\u3002\u9002\u7528\u4e8e”\u901a\u77e5”\u578b\u63a5\u53e3\u3002<\/li>\n
          • in<\/code><\/strong>\uff1a\u6570\u636e\u53ea\u4ece\u5ba2\u6237\u7aef\u6d41\u5411\u670d\u52a1\u7aef\uff08\u9ed8\u8ba4\uff09\u3002<\/li>\n
          • out<\/code><\/strong>\uff1a\u6570\u636e\u53ea\u4ece\u670d\u52a1\u7aef\u5199\u56de\u5ba2\u6237\u7aef\uff0c\u5ba2\u6237\u7aef\u4f20\u5165\u7684\u5bf9\u8c61\u5185\u5bb9\u4e0d\u4f1a\u88ab\u8bfb\u53d6\u3002<\/li>\n
          • inout<\/code><\/strong>\uff1a\u53cc\u5411\u3002\u4ee3\u4ef7\u662f\u4e24\u6b21\u5e8f\u5217\u5316\u5f00\u9500\uff0c\u5b9e\u8df5\u4e2d\u5f88\u5c11\u7528<\/strong>\u3002<\/li>\n<\/ul>\n
            \u4e09\u3001\u56db\u5927\u7ec4\u4ef6\u4e0e\u751f\u547d\u5468\u671f<\/h2>\n
            Q8\uff1aActivity \u542f\u52a8\u6a21\u5f0f\u6709\u54ea\u51e0\u79cd\uff1f<\/h3>\n
              \n
            • standard<\/code><\/strong>\uff1a\u9ed8\u8ba4\uff0c\u6bcf\u6b21\u90fd\u65b0\u5efa\u5b9e\u4f8b\uff0c\u538b\u5165\u542f\u52a8\u5b83\u7684\u90a3\u4e2a\u4efb\u52a1\u6808\u3002<\/li>\n
            • singleTop<\/code><\/strong>\uff1a\u6808\u9876\u590d\u7528<\/strong>\u3002\u82e5\u76ee\u6807\u5df2\u5728\u6808\u9876\u5219\u590d\u7528\uff0c\u56de\u8c03 onNewIntent()<\/code>\u3002\u9002\u5408\u9632\u6b62\u91cd\u590d\u70b9\u51fb\u6253\u5f00\u540c\u4e00\u4e2a\u9875\u9762\u3002<\/li>\n
            • singleTask<\/code><\/strong>\uff1a\u6808\u5185\u590d\u7528<\/strong>\u3002\u82e5\u6808\u4e2d\u5df2\u6709\u5b9e\u4f8b\uff0c\u5219\u628a\u5b83\u4e0a\u9762\u7684\u6240\u6709 Activity \u5168\u90e8\u51fa\u6808<\/strong>\uff08clearTop\uff09\uff0c\u5e76\u56de\u8c03 onNewIntent()<\/code>\u3002\u9002\u5408\u4e3b\u9875\u3001\u767b\u5f55\u9875\u8fd9\u7c7b\u5168\u5c40\u552f\u4e00\u7684\u5165\u53e3\u3002<\/li>\n
            • singleInstance<\/code><\/strong>\uff1a\u72ec\u5360\u4e00\u4e2a\u4efb\u52a1\u6808<\/strong>\uff0c\u7cfb\u7edf\u5185\u5168\u5c40\u552f\u4e00\u3002\u9002\u5408\u6765\u7535\u754c\u9762\u3001\u9501\u5c4f\u8fd9\u7c7b\u9700\u8981\u72ec\u7acb\u5b58\u5728\u7684\u9875\u9762\u3002<\/li>\n<\/ul>\n
              \u8ffd\u95ee”taskAffinity<\/code> \u6709\u4ec0\u4e48\u7528<\/strong>“\u2014\u2014\u5b83\u6307\u5b9a Activity \u5f52\u5c5e\u7684\u4efb\u52a1\u6808\u540d\uff0c\u4e0e singleTask<\/code> \u6216 allowTaskReparenting<\/code> \u914d\u5408\u4f7f\u7528\u65f6\u624d\u751f\u6548\uff0c\u53ef\u4ee5\u5b9e\u73b0”\u628a\u67d0\u4e2a Activity \u632a\u5230\u53e6\u4e00\u4e2a\u4efb\u52a1\u6808”\u3002<\/p>\n
              Q9\uff1a\u6a2a\u7ad6\u5c4f\u5207\u6362\u65f6 Activity \u7684\u751f\u547d\u5468\u671f\uff1f<\/h3>\n
              \u9ed8\u8ba4\u60c5\u51b5\u4e0b\u4f1a\u9500\u6bc1\u91cd\u5efa<\/strong>\uff1aonPause \u2192 onStop \u2192 onDestroy \u2192 onCreate \u2192 onStart \u2192 onResume<\/code>\u3002<\/p>\n
              \u82e5\u914d\u7f6e android:configChanges=\"orientation|screenSize\"<\/code>\uff0c\u5219\u4e0d\u91cd\u5efa<\/strong>\uff0c\u53ea\u56de\u8c03 onConfigurationChanged()<\/code>\u3002<\/p>\n
              \n
              \u73b0\u4ee3\u7b54\u6cd5\uff1a\u4e0d\u8981\u9760 configChanges<\/code> \u9003\u907f\u91cd\u5efa\uff0c\u800c\u5e94\u8be5\u7528 ViewModel<\/code> \u6b63\u786e\u4fdd\u5b58\u72b6\u6001\u3002<\/strong>ViewModel<\/code> \u7684\u751f\u547d\u5468\u671f\u72ec\u7acb\u4e8e Activity \u7684\u914d\u7f6e\u53d8\u66f4\uff0c\u6570\u636e\u5728\u91cd\u5efa\u540e\u81ea\u52a8\u4fdd\u7559\u3002\u8fd9\u4e5f\u662f Google \u5b98\u65b9\u63a8\u8350\u7684\u67b6\u6784\u65b9\u5f0f\u2014\u2014\u628a”\u914d\u7f6e\u53d8\u66f4”\u5f53\u6210\u4e00\u6b21\u6b63\u5e38\u7684\u751f\u547d\u5468\u671f\u4e8b\u4ef6\u6765\u5904\u7406\uff0c\u800c\u4e0d\u662f\u7ed5\u8fc7\u5b83<\/strong>\u3002<\/p>\n<\/blockquote>\n
              Q10\uff1aService \u7684\u4e24\u79cd\u542f\u52a8\u65b9\u5f0f\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/h3>\n\n\n\n\n\n\n\n
              \u7ef4\u5ea6<\/th>\nstartService<\/code><\/th>\nbindService<\/code><\/th>\n<\/tr>\n<\/thead>\n
              \u751f\u547d\u5468\u671f<\/td>\n\u72ec\u7acb\uff0c\u9700\u663e\u5f0f stopService<\/code>\/stopSelf<\/code><\/td>\n\u968f\u8c03\u7528\u65b9\uff0c\u5168\u90e8\u89e3\u7ed1\u5373\u9500\u6bc1<\/td>\n<\/tr>\n
              \u901a\u4fe1<\/td>\n\u5355\u5411\uff0c\u65e0\u76f4\u63a5\u56de\u8c03<\/td>\n\u53ef\u901a\u8fc7 Binder \u53cc\u5411\u901a\u4fe1<\/td>\n<\/tr>\n
              \u5178\u578b\u573a\u666f<\/td>\n\u4e0b\u8f7d\u3001\u64ad\u653e\uff08\u957f\u671f\u540e\u53f0\uff09<\/td>\n\u83b7\u53d6\u670d\u52a1\u5b9e\u4f8b\u3001\u8de8\u8fdb\u7a0b\u8c03\u7528<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
              \u9ad8\u9891\u8ffd\u95ee\uff1a\u540e\u53f0\u9650\u5236<\/strong>\u3002Android 8.0 \u8d77\u7981\u6b62\u540e\u53f0\u5e94\u7528\u521b\u5efa\u540e\u53f0\u670d\u52a1\uff0c\u957f\u671f\u4efb\u52a1\u5fc5\u987b\u7528\u524d\u53f0\u670d\u52a1\uff08startForegroundService<\/code> + \u5e38\u9a7b\u901a\u77e5\uff09<\/strong>\uff0c\u6216\u6539\u7528 WorkManager<\/code> \u5904\u7406\u53ef\u5ef6\u8fdf\u7684\u540e\u53f0\u5de5\u4f5c\u3002<\/p>\n
              Q11\uff1aBroadcastReceiver \u7684\u4e24\u79cd\u6ce8\u518c\u65b9\u5f0f\uff1f<\/h3>\n