{"id":927,"date":"2015-06-10T19:19:38","date_gmt":"2015-06-10T11:19:38","guid":{"rendered":"https:\/\/www.ray650128.com\/wordpress\/?p=927"},"modified":"2021-07-18T19:01:14","modified_gmt":"2021-07-18T11:01:14","slug":"android%e5%9b%9b%e5%a4%a7%e5%85%83%e4%bb%b6%e4%b9%8bbroadcast-receiver","status":"publish","type":"post","link":"https:\/\/blog.ray650128.com\/?p=927","title":{"rendered":"[Android]\u56db\u5927\u5143\u4ef6\u4e4bBroadcast Receiver"},"content":{"rendered":"\n

\u95dc\u65bcBroadcast Receiver<\/h2>\n\n\n\n

\u6240\u8b02\u7684Broadcast Receiver\uff0c\u5373\u662f\u8ca0\u8cac\u6536\u767c\u5ee3\u64ad\u7684\u5143\u4ef6<\/p>\n\n\n\n

\u7576\u7cfb\u7d71\u767c\u751f\u4e00\u4e9b\u4e8b\u4ef6\uff0c\u6bd4\u5982\u8aaa\u958b\u6a5f\u5b8c\u6210\u3001\u9023\u63a5\u7db2\u8def\u3001\u5145\u96fb\u6642\uff0cBroadcast Receiver\u6703\u63a5\u6536\u5230\u9019\u4e9b\u4e8b\u60c5\u4e26\u8b93\u6211\u5011\u505a\u76f8\u61c9\u7684\u8655\u7406\u3002<\/p>\n\n\n\n

Broadcast Receiver\u53ef\u4ee5\u5728Activity\u5167\u904b\u4f5c\uff0c\u4e5f\u53ef\u4ee5\u7368\u7acb\u904b\u4f5c\u3002<\/p>\n\n\n\n

\u4f8b\u5982\u7576\u6211\u60f3\u8981\u5075\u6e2c\u624b\u6a5f\u662f\u5426\u5728\u5145\u96fb\u72c0\u614b\uff0c\u4e26\u5728Activity\u4e2d\u986f\u793a\uff0c\u90a3\u9ebc\u6211\u53ef\u4ee5\u5728Activity\u8a3b\u518a\u4e00\u500bBroadcast Receiver\u5143\u4ef6\uff0c\u4e26\u5728onReceive\u7684callback\u4e2d\u8655\u7406\u5373\u53ef\u3002
<\/span><\/p>\n\n\n\n

\u95dc\u65bcIntent Filter<\/h2>\n\n\n\n

\u5728Android\u7cfb\u7d71\u4e2d\uff0c\u8a31\u591a\u7cfb\u7d71\u4e8b\u4ef6\u90fd\u6703\u900f\u904e\u5ee3\u64ad\u7684\u5f62\u5f0f\u767c\u9001\u51fa\u4f86\u3002<\/p>\n\n\n\n

\u4ee5\u524d\u9762\u63d0\u5230\u7684\u4f8b\u5b50\u8aaa\u660e\uff1a\u6211\u53ea\u9700\u8981\u77e5\u9053\u96fb\u6c60\u72c0\u614b\u7684\u4e8b\u4ef6\u5c31\u597d\uff0c\u4f46Android\u63d0\u4f9b\u7684\u4e8b\u4ef6\u592a\u591a\uff0c\u6211\u7e3d\u4e0d\u53ef\u80fd\u5168\u90e8\u63a5\u6536\u4e0b\u4f86\u505a\u8655\u7406\u5427\uff1f<\/p>\n\n\n\n

\u56e0\u6b64\u6211\u5011\u53ef\u4ee5\u900f\u904eIntent Filter\u4f86\u904e\u6ffe\u6389\u6211\u53ea\u60f3\u8981\u7684\u7cfb\u7d71\u4e8b\u4ef6\uff0c\u4f8b\u5982\u96fb\u6c60\u72c0\u614b\uff0c\u6211\u5011\u53ef\u4ee5\u5728Intent Filter\u4e2d\u52a0\u5165Intent<\/span>.<\/span>ACTION<\/span>_<\/span>BATTERY<\/span>_<\/span>CHANGED\u9019\u500bintent action\uff0c\u4f86\u904e\u6ffe\u9019\u500b\u4e8b\u4ef6\u3002
<\/span><\/p>\n\n\n\n

\u4f7f\u7528\u7bc4\u4f8b<\/h2>\n\n\n\n

1.\u52d5\u614b\u8a3b\u518a\u65b9\u5f0f<\/h3>\n\n\n\n

\u9019\u88e1\u7528\u5075\u6e2c\u5145\u96fb\u5668\u63d2\u5165\u6216\u62d4\u9664\u72c0\u614b\u4f5c\u70ba\u793a\u7bc4\uff0c\u7a0b\u5f0f\u78bc\u5982\u4e0b\uff1a<\/p>\n\n\n\n

public class MainActivity extends AppCompatActivity {\n\n    private BroadcastReceiver mReceiver;\n\n    @Override\n    protected void onCreate(Bundle savedInstanceState) {\n        super.onCreate(savedInstanceState);\n        setContentView(R.layout.activity_main);\n\n        mReceiver = getBroadcastReceiver();\n    }\n\n    @Override\n    protected void onResume() {\n        super.onResume();\n        \/\/ \u7576\u6d3b\u52d5\u6062\u5fa9\uff0c\u5df2\u7d93\u53ef\u4ee5\u548c\u4f7f\u7528\u8005\u4e92\u52d5\u6642\uff0c\u8a3b\u518a\u5ee3\u64ad\u63a5\u6536\u5668\n        registerReceiver(mReceiver, getIntentFilter());\n    }\n\n    @Override\n    protected void onPause() {\n        super.onPause();\n        \/\/ \u7576\u6d3b\u52d5\u66ab\u505c\uff0c\u4e14\u4f7f\u7528\u8005\u7121\u6cd5\u8207\u4e4b\u4e92\u52d5\u6642\uff0c\u89e3\u9664\u5ee3\u64ad\u63a5\u6536\u5668\n        unregisterReceiver(mReceiver);\n    }\n\n    \/\/ \u5efa\u7acb\u5ee3\u64ad\u63a5\u6536\u5668\uff0c\u4e26\u8655\u7406\u4e8b\u4ef6\n    private BroadcastReceiver getBroadcastReceiver() {\n        return new BroadcastReceiver() {\n            @Override\n            public void onReceive(Context context, Intent intent) {\n                String action = intent.getAction();\n                if (action.equals(Intent.ACTION_POWER_CONNECTED)) {\n                    Toast.makeText(context, \"\u5145\u96fb\u5668\u5df2\u63d2\u4e0a\", Toast.LENGTH_SHORT).show();\n                } else if (action.equals(Intent.ACTION_POWER_DISCONNECTED)) {\n                    Toast.makeText(context, \"\u5145\u96fb\u5668\u5df2\u62d4\u9664\", Toast.LENGTH_SHORT).show();\n                }\n            }\n        };\n    }\n\n    \/\/ \u5efa\u7acb\u5ee3\u64ad\u4e8b\u4ef6\u904e\u6ffe\u5668\n    private IntentFilter getIntentFilter() {\n        IntentFilter filter = new IntentFilter();\n        filter.addAction(Intent.ACTION_POWER_CONNECTED);\n        filter.addAction(Intent.ACTION_POWER_DISCONNECTED);\n        return filter;\n    }\n}<\/code><\/pre>\n\n\n\n
28~40\u884c\uff1a\u5efa\u7acbBroadcastReceiver\u7269\u4ef6\uff0c\u8986\u5bebonReceiver\u65b9\u6cd5\u4e2d\u7684\u4e8b\u4ef6\u8655\u7406<\/p>\n\n\n\n
\u9019\u88e1\u6703\u53bb\u89e3\u6790intent\u4e2d\u7684action\u6210\u54e1\uff0c\u5982\u679c\u662fACTION_POWER_CONNECT\u3001ACTION_POWER_DISCONNECT\u5247\u900f\u904eToast\u986f\u793a\u5145\u96fb\u5668\u5df2\u63d2\u4e0a\/\u5145\u96fb\u5668\u5df2\u62d4\u9664\u3002<\/p>\n\n\n\n
43~49\u884c\uff1a\u5efa\u7acbIntentFilter\u7269\u4ef6\uff0c\u904e\u6ffe\u6389\u5176\u4ed6\u4e0d\u8981\u7684\u5ee3\u64ad\uff0c\u53ea\u63a5\u6536ACTION_POWER_CONNECT\u3001ACTION_POWER_DISCONNECT\u9019\u5169\u500baction\u3002<\/p>\n\n\n\n
17\u884c\uff1a\u8a3b\u518a\u5ee3\u64ad\u63a5\u6536\u5668\uff0c\u4ee5\u53ca\u60f3\u63a5\u6536\u7684\u5ee3\u64ad\u4e8b\u4ef6<\/p>\n\n\n\n
24\u884c\uff1a\u5c07\u5ee3\u64ad\u63a5\u6536\u5668\u89e3\u9664\u8a3b\u518a<\/p>\n\n\n\n
<\/p>\n\n\n\n
2.\u975c\u614b\u8a3b\u518a\u65b9\u5f0f<\/h3>\n\n\n\n
\u9019\u88e1\u4f7f\u7528\u5ba2\u88fd\u5316\u5ee3\u64ad\u4e8b\u4ef6\u505a\u70ba\u793a\u7bc4\uff0c\u7a0b\u5f0f\u78bc\u53ca\u6b65\u9a5f\u5982\u4e0b\uff1a<\/p>\n\n\n\n
\u9996\u5148\u662f\u5ba2\u88fd\u5316BroadcastReceiver\u985e\u5225\uff0c\u9019\u88e1\u4ee5MyBroadcastReceiver\u8868\u793a\uff1a<\/p>\n\n\n\n
public class MyBroadcastReceiver extends BroadcastReceiver {\n\n    \/\/ \u5ba2\u88fd\u5316\u4e8b\u4ef6\n    public static final String ACTION_BUTTON_PRESSED = \"com.ray650128.broadcastreceiverdemo.ACTION_BUTTON_PRESSED\";\n\n    private static final String TAG = \"MyBroadcastReceiver\";\n\n    public MyBroadcastReceiver() {\n        Log.i(TAG, \"MyBroadcastReceiver \u5df2\u555f\u52d5\");\n    }\n\n    @Override\n    public void onReceive(Context context, Intent intent) {\n        \/\/ \u63a5\u6536\u5230\u5ee3\u64ad\u4e8b\u4ef6\uff0c\u9032\u884c\u89e3\u6790\n        String action = intent.getAction();\n        if (action.equals(ACTION_BUTTON_PRESSED)) {\n            Toast.makeText(context, \"\u6709\u4eba\u5077\u6309\u6309\u9215\uff01\", Toast.LENGTH_SHORT).show();\n        }\n        Log.i(TAG, \"\u63a5\u6536\u5230\u5ee3\u64ad\" + action);\n    }\n}<\/code><\/pre>\n\n\n\n
\u5728AndroidManifest.xml\u6587\u4ef6\u4e2d\u52a0\u5165MyBroadcastReceiver\uff0c\u4e26\u52a0\u4e0aIntentFilter\uff1a<\/p>\n\n\n\n
<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<manifest xmlns:android=\"http:\/\/schemas.android.com\/apk\/res\/android\"\n    package=\"com.ray650128.broadcastreceiverdemo\">\n\n    <application\n        android:allowBackup=\"true\"\n        android:icon=\"@mipmap\/ic_launcher\"\n        android:label=\"@string\/app_name\"\n        android:roundIcon=\"@mipmap\/ic_launcher_round\"\n        android:supportsRtl=\"true\"\n        android:theme=\"@style\/Theme.BroadcastReceiverDemo\">\n        <activity android:name=\".MainActivity\">\n            <intent-filter>\n                <action android:name=\"android.intent.action.MAIN\" \/>\n\n                <category android:name=\"android.intent.category.LAUNCHER\" \/>\n            <\/intent-filter>\n        <\/activity>\n\n        <receiver\n            android:name=\".MyBroadcastReceiver\">\n            <intent-filter>\n                <action android:name=\"com.ray650128.broadcastreceiverdemo.ACTION_BUTTON_PRESSED\" \/>\n            <\/intent-filter>\n        <\/receiver>\n    <\/application>\n\n<\/manifest><\/code><\/pre>\n\n\n\n
\u6700\u5f8c\u5728MainActivity.java\u4e2d\u52a0\u5165\u767c\u9001\u5ee3\u64ad\u7684\u7a0b\u5f0f\u78bc\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n
public class MainActivity extends AppCompatActivity {\n\n    private Button button;\n\n    @Override\n    protected void onCreate(Bundle savedInstanceState) {\n        super.onCreate(savedInstanceState);\n        setContentView(R.layout.activity_main);\n\n        button = (Button) findViewById(R.id.button);\n\n        button.setOnClickListener(new View.OnClickListener() {\n            @Override\n            public void onClick(View view) {\n                \/\/ \u767c\u9001\u5ee3\u64ad\n                Intent intent = new Intent();\n                intent.setAction(MyBroadcastReceiver.ACTION_BUTTON_PRESSED);\n                sendBroadcast(intent);\n            }\n        });\n    }\n}<\/code><\/pre>\n\n\n\n
<\/p>\n\n\n\n
\u4ee5\u4e0a\u662fBroadcastReceiver\u7684\u5169\u7a2e\u65b9\u5f0f\u50c5\u4f9b\u53c3\u8003\u3002<\/p>\n\n\n\n
<\/p>\n\n\n\n
\u95dc\u65bcBroadcast Receiver\u9700\u8981\u6ce8\u610f\u7684\u5730\u65b9<\/h2>\n\n\n\n
1.\u4e0d\u8981\u5728Broadcast Receiver\u4e2d\u57f7\u884c\u8017\u6642\u7684\u64cd\u4f5c<\/h3>\n\n\n\n
\u7531\u65bcBroadcast Receiver\u7684\u751f\u547d\u9031\u671f\u5f88\u77ed\uff0c\u5f9eonReceive()\u65b9\u6cd5\u958b\u59cb\u57f7\u884c\u5230\u7d50\u675f\u7684\u6642\u9593\u5927\u7d0410\u79d2\uff0c\u4e4b\u5f8c\u5c31\u6703\u88ab\u7cfb\u7d71\u92b7\u6bc0\uff0c\u6240\u4ee5\u5728onReceive()\u65b9\u6cd5\u76e1\u91cf\u4e0d\u8981\u505a\u8017\u6642\u7684\u64cd\u4f5c\uff0c\u4e0d\u7136\u53ef\u80fd\u6703ANR\uff0c\u4e5f\u5c31\u662f\u7cfb\u7d71\u6703\u63d0\u793a\u4f60\u300c\u61c9\u7528\u7a0b\u5f0f\u6c92\u6709\u56de\u61c9\u300d\u3002<\/p>\n\n\n\n
\u5176\u9918\u9805\u76ee\u4e4b\u5f8c\u518d\u88dc\u5145<\/p>\n\n\n\n
<\/p>\n\n\n\n
\u4ee5\u4e0a\u5247\u662f\u7e7cAndroid\u56db\u5927\u7269\u4ef6\u7c21\u4ecb\u4e4b\u5f8c\uff0c\u5c0dBroadcast Receiver\u66f4\u8a73\u7d30\u4e00\u9ede\u7684\u4ecb\u7d39\uff0c\u5982\u679c\u6709\u8208\u8da3\u66f4\u6df1\u5165\u63a2\u8a0e\uff0c\u53ef\u4ee5\u53c3\u8003Android Developers<\/a>\u7db2\u7ad9<\/p>\n","protected":false},"excerpt":{"rendered":"
\u95dc\u65bcBroadcast Receiver \u6240\u8b02\u7684Broadcast Receiver\uff0c\u5373\u662f\u8ca0\u8cac\u6536\u767c\u5ee3\u64ad\u7684\u5143\u4ef6  … <\/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-927","post","type-post","status-publish","format-standard","hentry","category-2"],"_links":{"self":[{"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/posts\/927","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=927"}],"version-history":[{"count":8,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/posts\/927\/revisions"}],"predecessor-version":[{"id":983,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/posts\/927\/revisions\/983"}],"wp:attachment":[{"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=927"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=927"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}