{"id":42343,"date":"2023-12-11T14:56:16","date_gmt":"2023-12-11T06:56:16","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=42343"},"modified":"2023-12-11T14:56:16","modified_gmt":"2023-12-11T06:56:16","slug":"%e8%b0%88%e8%b0%88contentprovider%e3%80%81contentresolver%e3%80%81contentobserver%e4%b9%8b%e9%97%b4%e7%9a%84%e5%85%b3%e7%b3%bb%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/11\/%e8%b0%88%e8%b0%88contentprovider%e3%80%81contentresolver%e3%80%81contentobserver%e4%b9%8b%e9%97%b4%e7%9a%84%e5%85%b3%e7%b3%bb%ef%bc%9f\/","title":{"rendered":"\u8c08\u8c08ContentProvider\u3001ContentResolver\u3001ContentObserver\u4e4b\u95f4\u7684\u5173\u7cfb\uff1f"},"content":{"rendered":"

“`”<\/p>\n

ContentProvider\uff1a<\/p>\n

<ul>
\n<li>\u56db\u5927\u7ec4\u4ef6\u7684\u5185\u5bb9\u63d0\u4f9b\u8005\uff0c\u4e3b\u8981\u7528\u4e8e\u5bf9\u5916\u63d0\u4f9b\u6570\u636e<\/li>
\n<li>\u5b9e\u73b0\u5404\u4e2a\u5e94\u7528\u7a0b\u5e8f\u4e4b\u95f4\u7684\uff08\u8de8\u5e94\u7528\uff09\u6570\u636e\u5171\u4eab\uff0c\u6bd4\u5982\u8054\u7cfb\u4eba\u5e94\u7528\u4e2d\u5c31\u4f7f\u7528\u4e86ContentProvider\uff0c\u4f60\u5728\u81ea\u5df1\u7684\u5e94\u7528\u4e2d\u53ef\u4ee5\u8bfb\u53d6\u548c\u4fee\u6539\u8054\u7cfb\u4eba\u7684\u6570\u636e\uff0c\u4e0d\u8fc7\u9700\u8981\u83b7\u5f97\u76f8\u5e94\u7684\u6743\u9650\u3002\u5176\u5b9e\u5b83\u4e5f\u53ea\u662f\u4e00\u4e2a\u4e2d\u95f4\u4eba\uff0c\u771f\u6b63\u7684\u6570\u636e\u6e90\u662f\u6587\u4ef6\u6216\u8005SQLite\u7b49<\/li>
\n<li>\u4e00\u4e2a\u5e94\u7528\u5b9e\u73b0ContentProvider\u6765\u63d0\u4f9b\u5185\u5bb9\u7ed9\u522b\u7684\u5e94\u7528\u6765\u64cd\u4f5c\uff0c\u901a\u8fc7ContentResolver\u6765\u64cd\u4f5c\u522b\u7684\u5e94\u7528\u6570\u636e\uff0c\u5f53\u7136\u5728\u81ea\u5df1\u7684\u5e94\u7528\u4e2d\u4e5f\u53ef\u4ee5<\/li>
\n<\/ul><\/p>\n

ContentResolver\uff1a<\/p>\n

<ul>
\n<li>\u5185\u5bb9\u89e3\u6790\u8005\uff0c\u7528\u4e8e\u83b7\u53d6\u5185\u5bb9\u63d0\u4f9b\u8005\u63d0\u4f9b\u7684\u6570\u636e<\/li>
\n<li>ContentResolver.notifyChange\uff08uri\uff09\u53d1\u51fa\u6d88\u606f<\/li>
\n<\/ul><\/p>\n

ContentObserver\uff1a<\/p>\n

<ul>
\n<li>\u5185\u5bb9\u76d1\u542c\u5668\uff0c\u53ef\u4ee5\u76d1\u542c\u6570\u636e\u7684\u6539\u53d8\u72b6\u6001<\/li>
\n<li>\u76ee\u7684\u662f\u89c2\u5bdf\uff08\u6355\u6349\uff09\u7279\u5b9aUri\u5f15\u8d77\u7684\u6570\u636e\u5e93\u7684\u53d8\u5316\uff0c\u7ee7\u800c\u505a\u4e00\u4e9b\u76f8\u5e94\u7684\u5904\u7406\uff0c\u5b83\u7c7b\u4f3c\u4e8e\u6570\u636e\u5e93\u6280\u672f\u4e2d\u7684\u89e6\u53d1\u5668\uff08Trigger\uff09\uff0c\u5f53ContentObserver\u6240\u89c2\u5bdf\u7684Uri\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u4fbf\u4f1a\u89e6\u53d1\u5b83\u3002\u89e6\u53d1\u5668\u5206\u4e3a\u8868\u89e6\u53d1\u5668\u3001\u884c\u89e6\u53d1\u5668\uff0c\u76f8\u5e94\u5730ContentObsever\u4e5f\u5206\u4e3a\u8868ContentObserver\u3001\u884cContentObserver\uff0c\u5f53\u7136\u8fd9\u662f\u4e0e\u5b83\u6240\u76d1\u542c\u7684Uri MIME Type\u6709\u5173\u7684<\/li>
\n<li>ContentResolver.registerContentObserver()\u76d1\u542c\u6d88\u606f<\/li>
\n<\/ul><\/p>\n

<pre><code> "“`
\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"

“`” ContentProvider\uff1a <ul> <li>\u56db […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-42343","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/42343","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=42343"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/42343\/revisions"}],"predecessor-version":[{"id":42344,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/42343\/revisions\/42344"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=42343"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=42343"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=42343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}