ASYNC\uff1a\u4e0d\u7ba1\u4e8b\u4ef6\u5f9e\u54ea\u500b\u57f7\u884c\u7dd2\u767c\u5e03\uff0c\u63a5\u6536\u7aef\u90fd\u6703\u5728\u5b50\u57f7\u884c\u7dd2\u8655\u7406\u3002\u6ce8\u610f\uff1a\u9019\u500b\u6a21\u5f0f\u4e0b\u7121\u6cd5\u9032\u884cUI\u76f8\u95dc\u7684\u64cd\u4f5c\uff01<\/li><\/ul>\n\n\n\n<\/p>\n\n\n\n
\u7528\u6cd5<\/h2>\n\n\n\n
\u9019\u88e1\u4f7f\u7528\u4e00\u500bService\u4f5c\u70ba\u767c\u9001\u8005\u3001\u4e00\u500bActivity\u4f5c\u70ba\u63a5\u6536\u8005\u3002<\/p>\n\n\n\n
Service\u6bcf\u4e00\u79d2\u767c\u9001\u4e00\u500b\u6578\u503c+1\u7684\u4e8b\u4ef6\u3002\u7576Activity\u63a5\u6536\u5230\u4e8b\u4ef6\u5f8c\uff0c\u900f\u904eTextView\u986f\u793a\u4e8b\u4ef6\u7684\u6578\u503c\uff0c\u6b65\u9a5f\u5982\u4e0b\uff1a<\/p>\n\n\n\n
1.\u9996\u5148\u5728build.gradle\u52a0\u5165EventBus\u5957\u4ef6\u5eab\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n
dependencies {\n implementation 'org.greenrobot:eventbus:3.0.0'\n}<\/code><\/pre>\n\n\n\n<\/p>\n\n\n\n
2.\u5ba3\u544a\u4e00\u500b\u81ea\u8a02\u985e\u5225\uff0c\u7576\u4f5cEventBus\u50b3\u905e\u7684\u53c3\u6578\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n
data class MyEvent(\n var counter: Int? = null\n)<\/code><\/pre>\n\n\n\n<\/p>\n\n\n\n
3.\u5efa\u7acbService\uff0c\u555f\u52d5\u65b9\u5f0f\u9019\u88e1\u7528Bind Service\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n
class MyService : Service() {\n\n private val mLocalBinder = LocalBinder()\n\n private var counter = 0\n\n private val handler = Handler()\n private val timerCounter = object : Runnable {\n override fun run() {\n counter++\n\n \/\/ \u767c\u9001\u4e8b\u4ef6\n EventBus.getDefault().post(\n MyEvent(counter)\n )\n\n handler.postDelayed(this, 1000)\n }\n }\n\n override fun onBind(arg0: Intent?): IBinder {\n return mLocalBinder\n }\n\n override fun onCreate() {\n super.onCreate()\n handler.post(timerCounter)\n }\n\n override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {\n return super.onStartCommand(intent, flags, startId)\n }\n\n override fun onUnbind(intent: Intent?): Boolean {\n return super.onUnbind(intent)\n }\n\n override fun onDestroy() {\n super.onDestroy()\n handler.removeCallbacks(timerCounter)\n }\n\n inner class LocalBinder : Binder() {\n val service: MyService = this@MyService\n }\n}<\/code><\/pre>\n\n\n\n<\/p>\n\n\n\n
4.\u5728Activity\u5be6\u4f5c\u8655\u7406\u4e8b\u4ef6\u7684function\uff0c\u4e26\u52a0\u5165\u555f\u52d5Service\u7684\u7a0b\u5f0f\u78bc\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n
class MainActivity : AppCompatActivity() {\n\n private var mService: MyService? = null\n private val mServiceConnection: ServiceConnection = object : ServiceConnection {\n override fun onServiceConnected(name: ComponentName, serviceBinder: IBinder) {\n mService = (serviceBinder as LocalBinder).service\n }\n\n override fun onServiceDisconnected(name: ComponentName) {}\n }\n\n private val eventBus: EventBus by lazy {\n EventBus.getDefault()\n }\n\n override fun onCreate(savedInstanceState: Bundle?) {\n super.onCreate(savedInstanceState)\n setContentView(R.layout.activity_main)\n\n mService = null\n val it = Intent(this, MyService::class.java)\n bindService(it, mServiceConnection, BIND_AUTO_CREATE) \/\/\u7d81\u5b9aService\n }\n\n override fun onResume() {\n super.onResume()\n\n eventBus.register(this)\n }\n\n override fun onPause() {\n super.onPause()\n\n eventBus.unregister(this)\n }\n\n override fun onDestroy() {\n super.onDestroy()\n\n mService = null\n unbindService(mServiceConnection)\n }\n\n \/\/ \u8a02\u95b1\u4e8b\u4ef6\n @Subscribe(threadMode = ThreadMode.MAIN)\n fun onEvent(event: MyEvent) {\n textView.text = \"count: ${event.counter}\"\n }\n}<\/code><\/pre>\n\n\n\n<\/p>\n\n\n\n
\u6700\u5f8c\u57f7\u884c\u61c9\u7528\u7a0b\u5f0f\uff0c\u5373\u53ef\u770b\u5230TextView\u4e0a\u7684\u6578\u503c\u6bcf\u79d2+1\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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