{"rsdb":{"rid":"239121","subhead":"","postdate":"0","aid":"164827","fid":"98","uid":"1","topic":"1","content":"
\n

Activity\u7684\u751f\u547d\u5468\u671f<\/strong>\u3000<\/p> \n

1.\u6b63\u5e38\u60c5\u51b5\u4e0b\u7684\u751f\u547d\u5468\u671f<\/strong><\/p> \n

    \n
  1. onCreate:  Activity\u6b63\u5728\u88ab\u521b\u5efa\uff0c\u751f\u547d\u5468\u671f\u4e2d\u7684\u7b2c\u4e00\u4e2a\u65b9\u6cd5\uff0c\u5e38\u5728\u6b64\u65b9\u6cd5\u4e2d\u505a\u4e00\u4e9b\u521d\u59cb\u5316\u5de5\u4f5c\uff0c\u6bd4\u5982\u8c03\u7528setContentView\u65b9\u6cd5\uff0c\u521d\u59cb\u5316Activity\u6240\u9700\u6570\u636e\u7b49\u3002<\/li> \n
  2. onRestart:  \u8868\u793aActivity\u6b63\u5728\u91cd\u65b0\u542f\u52a8\u3002\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u5f53Acivity\u4ece\u4e0d\u53ef\u89c1\u91cd\u65b0\u53d8\u4e3a\u53ef\u89c1\u72b6\u6001\u65f6\uff0conRestart\u65b9\u6cd5\u5c31\u4f1a\u88ab\u8c03\u7528\u3002<\/li> \n
  3. onStart:  \u8868\u793aActivity\u6b63\u5728\u88ab\u542f\u52a8\uff0c\u8fd9\u662fActivity\u5df2\u7ecf\u53ef\u89c1\uff0c\u4f46\u662f\u6ca1\u6709\u51fa\u73b0\u5728\u524d\u53f0\uff0c\u8fd8\u65e0\u6cd5\u4e0e\u7528\u6237\u4ea4\u4e92\u3002<\/li> \n
  4. onResume:  \u8868\u793aActivity\u53ef\u89c1\u5e76\u51fa\u73b0\u5728\u524d\u53f0\u5f00\u59cb\u6d3b\u52a8\u3002onStart\u548conResume\u90fd\u8868\u793aActivity\u53ef\u89c1\uff0c\u4f46\u662fonStart\u7684\u65f6\u5019Activity\u8fd8\u5728\u540e\u53f0\uff0conResume\u65f6Activity\u624d\u663e\u793a\u5230\u524d\u53f0\u3002<\/li> \n
  5. onPause:  Activity\u6b63\u5728\u505c\u6b62\uff0c\u6b64\u65f6\u53ef\u4ee5\u505a\u4e00\u4e9b\u5b58\u50a8\u6570\u636e\u3001\u505c\u6b62\u52a8\u753b\u7b49\u5de5\u4f5c\u3002\u4f46\u6ce8\u610f\u4e0d\u80fd\u592a\u8017\u65f6\uff0c\u56e0\u4e3a\u4f1a\u5f71\u54cd\u5230\u65b0Activity\u7684\u663e\u793a\uff0conPause\u5fc5\u987b\u5148\u6267\u884c\u5b8c\uff0c\u65b0Activity\u7684onResume\u624d\u80fd\u6267\u884c\u3002<\/li> \n
  6. onStop:  Activity\u5373\u5c06\u505c\u6b62\uff0c\u53ef\u4ee5\u505a\u4e00\u4e9b\u7a0d\u5fae\u91cd\u91cf\u7ea7\u7684\u56de\u6536\u5de5\u4f5c\uff0c\u540c\u6837\u4e0d\u80fd\u592a\u8017\u65f6\u3002<\/li> \n
  7. onDestory:  Activity\u5373\u5c06\u88ab\u9500\u6bc1\uff0c\u5728\u8fd9\u91cc\uff0c\u505a\u4e00\u4e9b\u56de\u6536\u5de5\u4f5c\u548c\u8d44\u6e90\u7684\u91ca\u653e\u3002<\/li> \n <\/ol> \n

    \u3000\u3000\u3000\u3000\u3000\u3000\"\"<\/p> \n

    Activity\u7684\u751f\u547d\u5468\u671f\u5207\u6362\u8fc7\u7a0b<\/p> \n

    \u3000\u3000\u5173\u4e8eonStart\u548conResume\u3001onPause\u548conStop\u7684\u4e0d\u540c\uff0conStart\u548conStop\u662f\u4eceActivity\u662f\u5426\u53ef\u89c1\u8fd9\u4e2a\u89d2\u5ea6\u6765\u56de\u8c03\uff0conResume\u548conPause\u662f\u4eceActivity\u662f\u5426\u4f4d\u4e8e\u524d\u53f0\u8fd9\u4e2a\u89d2\u5ea6\u6765\u56de\u8c03\u7684\uff0c\u9664\u4e86\u8fd9\u79cd\u533a\u522b\uff0c\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\u6ca1\u6709\u5176\u4ed6\u660e\u663e\u7684\u533a\u522b\u3002<\/p> \n

    2.\u5f02\u5e38\u60c5\u51b5\u4e0b\u7684\u751f\u547d\u5468\u671f\u5206\u6790<\/strong><\/p> \n

    \u3000\u3000\u8d44\u6e90\u76f8\u5173\u7684\u7cfb\u7edf\u914d\u7f6e\u53d1\u751f\u6539\u53d8\u5bfc\u81f4Activity\u88ab\u6740\u6b7b\u5e76\u91cd\u65b0\u521b\u5efa<\/p> \n

    \u3000\u3000\"\"<\/p> \n

                                       \u5f02\u5e38\u60c5\u51b5\u4e0bActivity\u7684\u91cd\u5efa\u8fc7\u7a0b<\/p> \n

    \u3000\u3000\u5f53\u624b\u673a\u65cb\u8f6c\u5c4f\u5e55\u65f6\uff0c\u7cfb\u7edf\u914d\u7f6e\u65b9\u5f0f\u53d1\u751f\u8fb9\uff0c\u5728\u9ed8\u8ba4\u60c5\u51b5\u4e0bActivity\u5c31\u4f1a\u88ab\u9500\u6bc1\u5e76\u4e14\u91cd\u65b0\u521b\u5efa\u3002\u5f53\u7cfb\u7edf\u914d\u7f6e\u53d1\u751f\u6539\u53d8\u540e\uff0cActivity\u4f1a\u88ab\u9500\u6bc1\uff0c\u5176onPause\u3001onStop\u3001onDestory\u5747\u4f1a\u88ab\u8c03\u7528\uff0c\u540c\u65f6\u7531\u4e8eActivity\u662f\u5728\u5f02\u5e38\u60c5\u51b5\u4e0b\u7ec8\u6b62\u7684\uff0c\u7cfb\u7edf\u4f1a\u8c03\u7528onSaveInstanceState\u6765\u4fdd\u5b58\u5f53\u524dActivity\u7684\u72b6\u6001(\u6b63\u5e38\u60c5\u51b5\u4e0b\u7cfb\u7edf\u4e0d\u4f1a\u8c03\u7528\u8fd9\u4e2a\u65b9\u6cd5)\u3002\u8fd9\u4e2a\u65b9\u6cd5\u8c03\u7528\u65f6\u673a\u5728onStop\u4e4b\u524d\uff0c\u548conPause\u6ca1\u6709\u65f6\u5e8f\u5173\u7cfb(\u53ef\u80fd\u5728onPause\u4e4b\u524d\u4e5f\u53ef\u80fd\u4e4b\u540e)\u3002\u5f53Activity\u88ab\u91cd\u65b0\u521b\u5efa\u4e4b\u540e\uff0c\u7cfb\u7edf\u4f1a\u8c03\u7528onRestoreInstanceState\uff0c\u5e76\u4e14\u628aActivity\u9500\u6bc1\u65f6onSaveInstanceState\u4fdd\u5b58\u7684bundle\u4f20\u7ed9onRestoreInstanceState\u548conCreate\u65b9\u6cd5\u3002\u53ef\u4ee5\u901a\u8fc7bundle\u662f\u5426\u4e3a\u7a7a\u6765\u5224\u65adActivity\u662f\u5426\u88ab\u91cd\u5efa\u4e86\u3002\u5982\u679c\u88ab\u91cd\u5efa\u4e86\uff0c\u53ef\u4ee5\u53d6\u51fa\u4e4b\u524d\u4fdd\u5b58\u7684\u6570\u636e\u5e76\u6062\u590d\uff0c\u4ece\u65f6\u5e8f\u4e0a\u6765\u8bb2\uff0conRestoreInstanceState\u7684\u8c03\u7528\u65f6\u673a\u5728onStart\u4e4b\u540e\u3002\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u65cb\u8f6c\u5c4f\u5e55\u540eActivity\u4f1a\u91cd\u65b0\u521b\u5efa\u3002\u4f46\u662f\u5f53\u8bbe\u7f6eActivity\u7684configChanges\u5c5e\u6027\u4e3aorientation|screenSize\u4e4b\u540eActivity\u4e0d\u4f1a\u91cd\u65b0\u521b\u5efa\u3002<\/p> \n

    3.Activity\u7684\u542f\u52a8\u6a21\u5f0fLaunchMode<\/strong><\/p> \n

      \n
    1. standard(\u6807\u51c6\u6a21\u5f0f):  \u4e5f\u662f\u7cfb\u7edf\u7684\u9ed8\u8ba4\u6a21\u5f0f\uff0c\u6bcf\u6b21\u542f\u52a8\u4e00\u4e2aActivity\u90fd\u4f1a\u91cd\u65b0\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5b9e\u4f8b\uff0c\u4e0d\u7ba1\u8fd9\u4e2a\u5b9e\u4f8b\u662f\u5426\u5df2\u7ecf\u5b58\u5728\u3002onCreate\u3001onStart\u3001onResume\u90fd\u4f1a\u88ab\u8c03\u7528\u3002<\/li> \n
    2. singleTop(\u6808\u9876\u590d\u7528\u6a21\u5f0f)  \u5728\u8fd9\u79cd\u6a21\u5f0f\u4e0b\uff0c\u5982\u679c\u65b0Activity\u7684\u5b9e\u4f8b\u5df2\u7ecf\u4f4d\u4e8e\u4efb\u52a1\u6808\u7684\u6808\u9876\uff0c\u90a3\u4e48\u6b64Activity\u4e0d\u4f1a\u88ab\u91cd\u65b0\u521b\u5efa\uff0c\u540c\u65f6\u56de\u8c03\u5b83\u7684onNewIntent\u65b9\u6cd5\uff0c\u901a\u8fc7\u6b64\u65b9\u6cd5\u7684\u53c2\u6570\u6211\u4eec\u53ef\u4ee5\u53bb\u9664\u5f53\u524d\u8bf7\u6c42\u7684\u4fe1\u606f\u3002\u9700\u8981\u6ce8\u610f\uff0c\u8fd9\u4e2aActivity\u7684onCreate\u3001onStart\u65b9\u6cd5\u4e0d\u4f1a\u88ab\u91cd\u65b0\u8c03\u7528\u3002\u5982\u679c\u65b0Activity\u7684\u5b9e\u4f8b\u5df2\u7ecf\u5b58\u5728\u4f46\u4e0d\u662f\u4f4d\u4e8e\u6808\u9876\uff0c\u90a3\u4e48\u65b0Activity\u4ecd\u7136\u4f1a\u91cd\u65b0\u521b\u5efa\u3002<\/li> \n
    3. singleTask(\u6808\u5185\u590d\u7528\u6a21\u5f0f)  \u8fd9\u662f\u4e00\u79cd\u5355\u4f8b\u6a21\u5f0f\uff0c\u5728\u8fd9\u79cd\u6a21\u5f0f\u4e0b\uff0c\u53ea\u8981Activity\u5728\u4e00\u4e2a\u6808\u4e2d\u5b58\u5728\uff0c\u90a3\u4e48\u591a\u6b21\u542f\u52a8\u6b64Activity\u90fd\u4e0d\u4f1a\u91cd\u65b0\u521b\u5efa\u5b9e\u4f8b\uff0c\u548csingleTop\u4e00\u6837\uff0c\u7cfb\u7edf\u4e5f\u4f1a\u56de\u8c03\u5176onNewIntent\u65b9\u6cd5\u3002\u5982\u679c\u6808\u4e2d\u6709\u8fd9\u4e2a\u5b9e\u4f8b\uff0c\u90a3\u4e48\u4f1a\u5c06\u8be5\u5b9e\u4f8b\u4e4b\u4e0a\u7684Activity\u5168\u90e8\u5f39\u51fa\u6808\uff0c\u5c06\u8be5\u5b9e\u4f8b\u7f6e\u4e8e\u6808\u9876\u3002<\/li> \n
    4. singleInstance(\u5355\u5b9e\u4f8b\u6a21\u5f0f)  \u8fd9\u662f\u4e00\u79cd\u52a0\u5f3a\u7684singleTask\u6a21\u5f0f\uff0c\u9664\u4e86\u5177\u6709singleTask\u6a21\u5f0f\u7684\u6240\u6709\u7279\u6027\u4e4b\u5916\uff0c\u8fd8\u52a0\u5f3a\u4e86\u4e00\u70b9\uff0c\u5c31\u662f\u5177\u6709\u6b64\u6a21\u5f0f\u7684Activity\u53ea\u80fd\u5355\u72ec\u7684\u4f4d\u4e8e\u4e00\u4e2a\u4efb\u52a1\u6808\u4e2d\u3002<\/li> \n <\/ol> \n

      4.Activity\u7684Flags<\/strong><\/p> \n

      \u3000\u3000<\/strong>FLAG_ACTIVITY_NEW_TASK<\/p> \n

      \u3000\u3000\u8fd9\u4e2a\u6807\u8bb0\u4f4d\u7684\u4f5c\u7528\u662f\u4e3aActivity\u6307\u5b9a\u201csingleTask\u201d\u542f\u52a8\u6a21\u5f0f\uff0c\u5176\u6548\u679c\u548c\u5728XML\u4e2d\u6307\u5b9a\u8be5\u6a21\u5f0f\u76f8\u540c\u3002<\/p> \n

      \u3000\u3000FLAG_ACTIVITY_SINGLE_TOP<\/p> \n

      \u3000\u3000\u8fd9\u4e2a\u6807\u8bb0\u4f4d\u7684\u4f5c\u7528\u662f\u4e3aActivity\u6307\u5b9a\u201csingleTop\u201d\u542f\u52a8\u6a21\u5f0f\uff0c\u5176\u6548\u679c\u548c\u5728XML\u4e2d\u6307\u5b9a\u8be5\u6a21\u5f0f\u76f8\u540c\u3002<\/p> \n

      \u3000\u3000FLAG_ACTIVITY_CLEAR_TOP<\/p> \n

      \u3000\u3000\u5177\u6709\u6b64\u6807\u8bb0\u4f4d\u7684Activity\uff0c\u5f53\u5b83\u542f\u52a8\u65f6\uff0c\u5728\u540c\u4e00\u4e2a\u4efb\u52a1\u6808\u4e2d\u6240\u6709\u4f4d\u4e8e\u5b83\u4e0a\u9762\u7684Activity\u90fd\u8981\u51fa\u6808\u3002<\/p> \n

      5.IntentFilter\u7684\u5339\u914d\u89c4\u5219<\/strong><\/p> \n

      \u3000\u3000<\/strong>\u9690\u5f0f\u8c03\u7528\u9700\u8981Intent\u80fd\u591f\u5339\u914d\u76ee\u6807\u7ec4\u4ef6\u7684IntentFilter\u4e2d\u6240\u8bbe\u7f6e\u7684\u8fc7\u6ee4\u4fe1\u606f\uff0c\u5982\u679c\u4e0d\u5339\u914d\u5c06\u65e0\u6cd5\u542f\u52a8\u76ee\u6807Activity\u3002IntentFilter\u4e2d\u7684\u8fc7\u6ee4\u4fe1\u606f\u6709action\u3001category\u3001data\u3002\u4e00\u4e2aIntent\u53ea\u6709\u540c\u65f6\u5339\u914daction\u7c7b\u522b\u3001category\u7c7b\u522b\u3001data\u7c7b\u522b\u624d\u7b97\u5b8c\u5168\u5339\u914d\u3002\u53e6\u5916\uff0c\u4e00\u4e2aActivity\u4e2d\u53ef\u4ee5\u6709\u591a\u4e2aintent-filter\uff0c\u4e00\u4e2aIntent\u53ea\u8981\u80fd\u5339\u914d\u4efb\u4f55\u4e00\u7ec4intent-filter\u5373\u53ef\u6210\u529f\u542f\u52a8\u5bf9\u5e94\u7684Activity\u3002<\/p> \n

      \u3000\u30001.action\u7684\u5339\u914d\u89c4\u5219<\/p> \n

      \u3000\u3000action\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u7cfb\u7edf\u9884\u5b9a\u4e49\u4e86\u4e00\u4e9baction\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u5728\u5e94\u7528\u4e2d\u5b9a\u4e49\u81ea\u5df1\u7684action\u3002action\u7684\u5339\u914d\u8981\u6c42Intent\u4e2d\u7684action\u5b58\u5728\u4e14\u5fc5\u987b\u548c\u8fc7\u6ee4\u89c4\u5219\u4e2d\u7684\u5176\u4e2d\u4e00\u4e2aaction\u76f8\u540c\uff0c\u8fd9\u91cc\u9700\u8981\u6ce8\u610f\u548ccategory\u5339\u914d\u89c4\u5219\u7684\u4e0d\u540c\u3002action\u533a\u5206\u5927\u5c0f\u5199\uff0c\u5927\u5c0f\u5199\u4e0d\u540c\u5b57\u7b26\u4e32\u76f8\u540c\u7684action\u4f1a\u5339\u914d\u5931\u8d25\u3002<\/p> \n

      \u3000\u30002.category\u7684\u5339\u914d\u89c4\u5219<\/p> \n

      \u3000\u3000Intent\u4e2d\u5982\u679c\u6709category\uff0c\u90a3\u4e48\u6240\u6709\u7684category\u90fd\u5fc5\u987b\u548c\u8fc7\u6ee4\u89c4\u5219\u4e2d\u7684\u5176\u4e2d\u4e00\u4e2acategory\u76f8\u540c\u3002\u5f53\u7136\uff0cIntent\u4e2d\u53ef\u4ee5\u6ca1\u6709category\uff0c\u4f46\u5b83\u4ecd\u7136\u53ef\u4ee5\u5339\u914d\u6210\u529f\uff0c\u539f\u56e0\u662f\u7cfb\u7edf\u5728\u8c03\u7528startActivity\u548cstartActivityForResult\u7684\u65f6\u5019\u4f1a\u9ed8\u8ba4\u4e3aIntent\u52a0\u4e0a\u201candroid.intent.category.DEFAULT\u201d\u8fd9\u4e2acategory\u3002\u540c\u65f6\u4e3a\u4e86\u6211\u4eec\u7684activity\u80fd\u591f\u63a5\u6536\u9690\u5f0f\u8c03\u7528\uff0c\u5c31\u5fc5\u987b\u5728","orderid":"0","title":"Activity\u968f\u7b14(\u4e00)","smalltitle":"","mid":"0","fname":"Android","special_id":"0","bak_id":"0","info":"0","hits":"10883","pages":"2","comments":"0","posttime":"2017-10-16 18:18:41","list":"1508149121","username":"admin","author":"","copyfrom":"","copyfromurl":"","titlecolor":"","fonttype":"0","titleicon":"0","picurl":"http:\/\/images2017.cnblogs.com\/blog\/1256275\/201710\/1256275-20171013103125715-161648184.png","ispic":"1","yz":"1","yzer":"","yztime":"0","levels":"0","levelstime":"0","keywords":"Activity<\/A> \u968f\u7b14<\/A>","jumpurl":"","iframeurl":"","style":"","template":"a:3:{s:4:\"head\";s:0:\"\";s:4:\"foot\";s:0:\"\";s:8:\"bencandy\";s:0:\"\";}","target":"0","ip":"113.108.110.181","lastfid":"0","money":"0","buyuser":"","passwd":"","allowdown":"","allowview":"","editer":"","edittime":"0","begintime":"0","endtime":"0","description":"Activity\u968f\u7b14","lastview":"1713928992","digg_num":"8368","digg_time":"0","forbidcomment":"0","ifvote":"0","heart":"","htmlname":"","city_id":"0"},"page":"1"}