{"id":924,"date":"2015-06-09T21:54:44","date_gmt":"2015-06-09T13:54:44","guid":{"rendered":"https:\/\/www.ray650128.com\/wordpress\/?p=924"},"modified":"2021-05-19T18:24:38","modified_gmt":"2021-05-19T10:24:38","slug":"android%e5%9b%9b%e5%a4%a7%e5%85%83%e4%bb%b6%e4%b9%8bservice","status":"publish","type":"post","link":"https:\/\/blog.ray650128.com\/?p=924","title":{"rendered":"[Android]\u56db\u5927\u5143\u4ef6\u4e4bService"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Service\u4ecb\u7d39<\/h2>\n\n\n\n<p>\u5148\u524d\u5728<a href=\"https:\/\/www.ray650128.com\/wordpress\/?p=882\">[Android]\u56db\u5927\u5143\u4ef6\u7c21\u4ecb<\/a>\u4e2d\u6709\u7c21\u55ae\u4ecb\u7d39\u904e\uff0cService\u662f\u4e00\u500b\u6c92\u6709\u4f7f\u7528\u8005\u4ecb\u9762\u7684\u7a0b\u5f0f\uff0c\u4e00\u822c\u662f\u62ff\u4f86\u505a\u5728\u80cc\u666f\u8655\u7406\u4e00\u4e9b\u9700\u8981\u9577\u6642\u9593\u76e3\u63a7\u7684\u4e8b\u60c5\u3002<\/p>\n\n\n\n<p>Service\u548cActivity\u6700\u5927\u7684\u5dee\u5225\u662f\uff0c\u4ed6\u53ef\u4ee5\u5728\u80cc\u666f\u9032\u884c\u9577\u6642\u9593\u7684\u5de5\u4f5c\u3002<\/p>\n\n\n\n<p>\u5728\u9019\u88e1\u9084\u662f\u62ff\u97f3\u6a02\u64ad\u653e\u5668\u70ba\u4f8b\uff1a<\/p>\n\n\n\n<p>\u97f3\u6a02\u64ad\u653e\u5668\u7684\u7279\u8272\u662f\uff0c\u5c31\u7b97\u7576Activity\u5df2\u7d93\u9000\u5230\u80cc\u666f\u53bb\uff0c\u4f46\u97f3\u6a02\u4ecd\u5728\u7e7c\u7e8c\u64ad\u653e\uff0c\u4e14\u7576\u4e00\u9996\u6b4c\u64ad\u653e\u5b8c\u4e4b\u5f8c\u9084\u6703\u7e7c\u7e8c\u64ad\u653e\u4e0b\u4e00\u9996\uff0c\u76f4\u5230\u4f60\u9000\u51fa\u9019\u500b\u61c9\u7528\u7a0b\u5f0f\u3002<\/p>\n\n\n\n<p>\u80fd\u5920\u9054\u5230\u9019\u6a23\u7684\u529f\u80fd\uff0c\u90fd\u662f\u6b78\u529f\u65bcService\u5728\u80cc\u666f\u63a7\u5236\u97f3\u6a02\u64ad\u653e\u5668\u7684\u529f\u52de\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Service\u751f\u547d\u9031\u671f<\/h2>\n\n\n\n<p>Service\u5982\u540cActivity\u4e00\u6a23\uff0c\u4e5f\u662f\u5177\u5099\u751f\u547d\u9031\u671f\u7684\u3002<\/p>\n\n\n\n<p>\u7531\u65bcService\u6c92\u6709\u756b\u9762\uff0c\u56e0\u6b64\u4e0d\u9700\u8981onStart()\u3001onStop()\u3001onPause()\u3001onResume()\u7b49\u7b49callback\u505a\u76f8\u61c9\u7684\u8655\u7406\u3002<\/p>\n\n\n\n<p>\u751f\u547d\u9031\u671f\u5982\u4e0b\u5716\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/miro.medium.com\/max\/389\/0*ZvU_EC7x7NuK_P_T\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u7531\u4e0a\u5716\u6211\u5011\u53ef\u4ee5\u770b\u5230\uff0cService\u5177\u6709\u5169\u7a2e\u555f\u52d5\u65b9\u5f0f\uff0c\u5206\u5225\u662fstartServide()\u548cbindService()<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">startService()<\/h3>\n\n\n\n<p>\u9019\u7a2e\u65b9\u5f0f\u662f\u900f\u904eintent\u4f86\u555f\u52d5Service\uff0c\u7cfb\u7d71\u6703\u5148\u547c\u53ebonCreate()\uff0c\u7136\u5f8c\u5c07intent\u5e36\u5165onStartCommand\u65b9\u6cd5\u4e2d\u3002<\/p>\n\n\n\n<p>\u900f\u904estartService()\u65b9\u5f0f\u555f\u52d5\u7684Service\u6703\u4e00\u76f4\u57f7\u884c\uff0c\u76f4\u5230\u547c\u53eb\u4e86stopService()\u6216\u662f\u5167\u90e8\u547c\u53ebstopSelf()\u624d\u6703\u88ab\u505c\u6b62\u3002<\/p>\n\n\n\n<p>\u53e6\u5916\uff0c\u4e0d\u8ad6\u547c\u53eb\u591a\u5c11\u6b21startService()\uff0c\u53ea\u6709\u5728Service\u7b2c\u4e00\u6b21\u555f\u52d5\u6642\u624d\u6703\u547c\u53ebonCreate()\uff0c\u5176\u4ed6\u6642\u9593\u90fd\u662f\u76f4\u63a5\u547c\u53ebonStartCommand()\u7684\uff0c\u56e0\u6b64\u6211\u5011\u53ef\u4ee5\u5229\u7528intent\u4e2d\u593e\u5e36\u4e00\u4e9b\u53c3\u6578\u8b93Service\u53bb\u505a\u76f8\u5c0d\u61c9\u7684\u4e8b\u60c5\u3002<\/p>\n\n\n\n<p>\u751f\u547d\u9031\u671f\u53c3\u8003\u5de6\u534a\u908a\u7684\u6d41\u7a0b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">startService\u7bc4\u4f8b<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u555f\u52d5Service<\/h4>\n\n\n\n<p>1.\u5efa\u7acb\u4e00\u500bTestService.java\uff0c\u4e26\u7e7c\u627f\u81eaandroid.app.Service<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"java\" class=\"language-java\">public class TestService extends Service {\n\n    private static final String <em>TAG <\/em>= \"TestService\";\n\n    @Override\n    public void onCreate() {\n        super.onCreate();\n        Log.<em>i<\/em>(<em>TAG<\/em>, \"Service is call onCreate()\");\n    }\n\n    @Override\n    public int onStartCommand(Intent intent, int flags, int startId) {\n        Log.<em>i<\/em>(<em>TAG<\/em>, \"Service is call onStartCommand()\");\n        return super.onStartCommand(intent, flags, startId);\n    }\n\n    @Nullable\n    @Override\n    public IBinder onBind(Intent intent) {\n        Log.<em>i<\/em>(<em>TAG<\/em>, \"Service is call onBind()\");\n        return null;\n    }\n\n    @Override\n    public void onDestroy() {\n        super.onDestroy();\n        Log.<em>i<\/em>(<em>TAG<\/em>, \"Service is call onDestroy()\");\n    }\n}<\/code><\/pre>\n\n\n\n<p>2.\u5728MainActivity\u7684onCreate()\uff0c\u900f\u904eintent\u555f\u52d5TestService\uff0c\u4e26\u5728onDestroy()\uff0c\u95dc\u9589Service<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"java\" class=\"language-java\">public class MainActivity extends AppCompatActivity {\n\n    private Intent serviceIntent;\n\n    @Override\n    protected void onCreate(Bundle savedInstanceState) {\n        super.onCreate(savedInstanceState);\n        setContentView(R.layout.<em>activity_main<\/em>);\n\n        serviceIntent = new Intent(MainActivity.this, TestService.class);\n\n        startService(serviceIntent);\n    }\n\n    @Override\n    protected void onDestroy() {\n        super.onDestroy();\n\n        stopService(serviceIntent);\n    }\n}<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u50b3\u9001\u6307\u4ee4\u7d66Service<\/h4>\n\n\n\n<p>\u56de\u5230TestService.java\uff0c\u4e26\u5728onStartCommand()\u4e2d\uff0c\u52a0\u5165\u4e0b\u5217\u7a0b\u5f0f\u78bc\uff0c\u50cf\u9019\u6a23\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"java\" class=\"language-java\">@Override\npublic int onStartCommand(Intent intent, int flags, int startId) {\n    Log.<em>i<\/em>(<em>TAG<\/em>, \"Service is call onStartCommand()\");\n\n    \/\/ \u63a5\u6536\u7531 Activity \u50b3\u9001\u904e\u4f86\u7684\u6307\u4ee4\n    String message = intent.getStringExtra(\"SHOW_MESSAGE\");\n    if (message != null) {\n        Log.<em>i<\/em>(<em>TAG<\/em>, \"Message is: \" + message);\n    }\n\n    return super.onStartCommand(intent, flags, startId);\n}<\/code><\/pre>\n\n\n\n<p>\u5728MainActivity\u4e2d\uff0c\u52a0\u5165\u4e00\u500b\u6309\u9215\uff0c\u4e26\u900f\u904e\u5148\u524d\u5efa\u7acb\u7684serviceIntent\u7269\u4ef6\uff0c\u767c\u9001\u4e00\u500bString Extra\uff0c\u50cf\u9019\u6a23\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"java\" class=\"language-java\">button.setOnClickListener(new View.OnClickListener() {\n    @Override\n    public void onClick(View view) {\n        serviceIntent.putExtra(\"SHOW_MESSAGE\", \"Hello\");\n        startService(serviceIntent);\n    }\n});<\/code><\/pre>\n\n\n\n<p>\u57f7\u884c\u61c9\u7528\u7a0b\u5f0f\uff0c\u5373\u53ef\u5728Logcat\u770b\u5230Service\u88ab\u555f\u52d5\u3002<\/p>\n\n\n\n<p>\u6309\u4e0b\u6309\u9215\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u5728Logcat\u770b\u5230Service\u63a5\u6536\u5230SHOW_MESSAGE\uff0c\u4e26\u986f\u793aHello<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">2021-05-19 17:53:37.751 5586-5586\/? I\/TestService: Service is call onCreate()\n 2021-05-19 17:53:37.751 5586-5586\/? I\/TestService: Service is call onStartCommand()\n 2021-05-19 17:53:42.070 5586-5586\/? I\/TestService: Service is call onStartCommand()\n 2021-05-19 17:53:42.070 5586-5586\/? I\/TestService: Message is: Hello<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">bindService()<\/h3>\n\n\n\n<p>\u76f8\u5c0d\u65bcstartService()\u7684\u53e6\u4e00\u7a2e\u555f\u52d5\u65b9\u5f0f\uff0c\u5247\u662fbindService()\u3002<\/p>\n\n\n\n<p>bindService()\u7684\u555f\u52d5\u65b9\u5f0f\u662f\u5728Activity\u5efa\u7acb\u4e00\u500b\u8207Service\u7d81\u5b9a\u7684\u9023\u7dda(ServiceConnection)\uff0c\u8b93\u8207\u4e4b\u7d81\u5b9a\u7684Activity\u53ef\u4ee5\u76f4\u63a5\u547c\u53eb\u9019\u500bService\u4e2d\u7684\u516c\u958b\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p>\u53e6\u5916\uff0cbindService()\u65b9\u5f0f\u555f\u52d5\u7684Service\uff0c\u6703\u96a8\u8457Activity\u8207\u4e4b\u89e3\u7d81\u6642\u88ab\u92b7\u6bc0\u3002\u56e0\u6b64\u5728\u8a2d\u8a08\u6642\u5fc5\u9808\u8003\u616eService\u662f\u9700\u8981\u9577\u6642\u9593\u904b\u4f5c\u800c\u6c7a\u5b9a\u8981\u4f7f\u7528startService()\u9084\u662fbindService()\u3002<\/p>\n\n\n\n<p>\u751f\u547d\u9031\u671f\u53c3\u8003\u53f3\u534a\u908a\u7684\u6d41\u7a0b\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">bindService\u7bc4\u4f8b<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">\u555f\u52d5Service<\/h4>\n\n\n\n<p>1.\u5efa\u7acb\u4e00\u500bTestBindService.java\uff0c\u4e26\u7e7c\u627f\u81eaandroid.app.Service\u3002<\/p>\n\n\n\n<p>\u6b64\u5916\uff0c\u5728TestBindService\u4e2d\uff0c\u5efa\u7acb\u4e00\u500bMyTestBinder\u985e\u5225\u3002<\/p>\n\n\n\n<p>\u63a5\u8457\u518d\u5c07onBind()\u8986\u5beb\uff0c\u628aMyTestBinder\u4f5c\u70ba\u56de\u50b3\u7684\u7269\u4ef6\u50b3\u51fa\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"java\" class=\"language-java\">public class TestBindService extends Service {\n\n    private static final String <em>TAG <\/em>= \"TestBindService\";\n\n    private final IBinder binder = new MyTestBinder();\n\n    @Override\n    public void onCreate() {\n        super.onCreate();\n        Log.<em>i<\/em>(<em>TAG<\/em>, \"Service is call onCreate()\");\n    }\n\n\n    @Nullable\n    @Override\n    public IBinder onBind(Intent intent) {\n        Log.<em>i<\/em>(<em>TAG<\/em>, \"Service is call onBind()\");\n        return binder;\n    }\n\n    @Override\n    public boolean onUnbind(Intent intent) {\n        Log.<em>i<\/em>(<em>TAG<\/em>, \"Service is call onUnbind()\");\n        return super.onUnbind(intent);\n    }\n\n    @Override\n    public void onDestroy() {\n        super.onDestroy();\n        Log.<em>i<\/em>(<em>TAG<\/em>, \"Service is call onDestroy()\");\n    }\n\n    public void showMessage(String message) {\n        Log.<em>i<\/em>(<em>TAG<\/em>, \"Message is: \" + message);\n    }\n\n    public class MyTestBinder extends Binder {\n        public TestBindService getService() {\n            return TestBindService.this;\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<p>2.\u5728MainActivity\u7684onCreate()\uff0c\u65b0\u589econnect\u3001mService\u7269\u4ef6\u3002<\/p>\n\n\n\n<p>\u4e26\u5728connect\u7684onServiceConnected()\u4e2d\uff0c\u900f\u904eIBinder\u53d6\u5f97\u6211\u5011\u8981\u555f\u52d5\u7684Service\uff0c\u4e26\u5e36\u5230mService\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"java\" class=\"language-java\">private TestBindService mService;\nprivate ServiceConnection connection = new ServiceConnection() {\n\n    @Override\n    public void onServiceDisconnected(ComponentName name) {\n        mService = null;\n    }\n\n    @Override\n    public void onServiceConnected(ComponentName name, IBinder service) {\n        mService = ((TestBindService.MyTestBinder) service).getService();\n        Log.<em>i<\/em>(<em>TAG<\/em>, \"Service is connected\");\n    }\n};<\/code><\/pre>\n\n\n\n<p>\u4e4b\u5f8c\u6211\u5011\u5c31\u53ef\u4ee5\u76f4\u63a5\u547c\u53ebService\u4e2d\u516c\u958b\u7684function\uff0c\u8b93Service\u505a\u4e8b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"java\" class=\"language-java\">button.setOnClickListener(new View.OnClickListener() {\n    @Override\n    public void onClick(View view) {\n        mService.showMessage(\"Hello\");\n    }\n});<\/code><\/pre>\n\n\n\n<p>\u57f7\u884cAPP\uff0c\u6309\u4e0bAPP\u4e0a\u7684\u6309\u9215\uff0c\u5373\u53ef\u5728Logcat\u770b\u5230\u6211\u5011\u547c\u53ebService\u6240\u505a\u7684\u4e8b\u60c5\u4e86<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">2021-05-19 18:11:48.490 6303-6303\/com.ray650128.startservicetest I\/MainActivity: Service is connected\n 2021-05-19 18:11:52.806 6303-6303\/com.ray650128.startservicetest I\/TestBindService: Message is: Hello<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4f7f\u7528Service\u6642\u53ef\u80fd\u6703\u9047\u5230\u7684\u7591\u554f<\/h2>\n\n\n\n<p><strong>1.Service\u53ef\u4ee5\u9577\u6642\u9593\u904b\u4f5c\uff0c\u4ee3\u8868\u5b83\u53ef\u4ee5\u57f7\u884c\u8017\u6642\u5de5\u4f5c\u55ce\uff1f<\/strong><\/p>\n\n\n\n<p>\u7b54\u6848\u662f\u4e0d\u884c\uff0c\u56e0\u70baService\u57fa\u672c\u7684\u4e09\u500b\u751f\u547d\u5468\u671f\u90fd\u662f\u5728\u4e3b\u57f7\u884c\u7dd2\u4e0a\u57f7\u884c\u7684\uff0c\u56e0\u6b64\u6211\u5011\u5982\u679c\u8981\u57f7\u884c\u8017\u6642\u5de5\u4f5c\uff0c\u9084\u662f\u5fc5\u9808\u5207\u63db\u5230\u5176\u4ed6\u57f7\u884c\u7dd2\u4f86\u57f7\u884c\u8017\u6642\u5de5\u4f5c\u3002<\/p>\n\n\n\n<p><strong>\u5176\u4ed6\u5f85\u5f8c\u7e8c\u88dc\u5145<\/strong><\/p>\n\n\n\n<p>\u4ee5\u4e0a\u662f\u7e7c\u56db\u5927\u5143\u4ef6\u7c21\u4ecb\u4e4b\u5f8c\uff0c\u5c0d\u65bcService\u66f4\u8a73\u7d30\u4e00\u9ede\u7684\u4ecb\u7d39\uff0c\u5982\u679c\u9700\u8981\u66f4\u8a73\u7d30\u7684\u8cc7\u6599\uff0c\u8acb\u53c3\u8003<a href=\"https:\/\/developer.android.com\/guide\/components\/services\">Android Developers\u7db2\u7ad9<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Service\u4ecb\u7d39 \u5148\u524d\u5728[Android]\u56db\u5927\u5143\u4ef6\u7c21\u4ecb\u4e2d\u6709\u7c21\u55ae\u4ecb\u7d39\u904e\uff0cService\u662f\u4e00\u500b\u6c92\u6709\u4f7f\u7528\u8005\u4ecb\u9762\u7684\u7a0b &hellip; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-924","post","type-post","status-publish","format-standard","hentry","category-2"],"_links":{"self":[{"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/posts\/924","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=924"}],"version-history":[{"count":5,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/posts\/924\/revisions"}],"predecessor-version":[{"id":968,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/posts\/924\/revisions\/968"}],"wp:attachment":[{"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=924"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=924"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=924"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}