{"id":1295,"date":"2021-04-02T21:23:03","date_gmt":"2021-04-02T13:23:03","guid":{"rendered":"https:\/\/badgameshow.com\/fly\/?p=1295"},"modified":"2022-12-14T16:38:58","modified_gmt":"2022-12-14T08:38:58","slug":"android-%e5%85%a7%e9%83%a8%e5%84%b2%e5%ad%98%e5%a4%96%e9%83%a8%e5%84%b2%e5%ad%98%e5%88%86%e5%8d%80%e5%84%b2%e5%ad%98","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/fly\/android-%e5%85%a7%e9%83%a8%e5%84%b2%e5%ad%98%e5%a4%96%e9%83%a8%e5%84%b2%e5%ad%98%e5%88%86%e5%8d%80%e5%84%b2%e5%ad%98\/","title":{"rendered":"\u3010Android\u3011Data and File Storage \u5167\u90e8\u5132\u5b58&#038;\u5916\u90e8\u5132\u5b58&#038;\u5206\u5340\u5132\u5b58 \u7bc4\u4f8b"},"content":{"rendered":"<h1>\u3010Android\u3011Data and File Storage \u5167\u90e8\u5132\u5b58&amp;\u5916\u90e8\u5132\u5b58&amp;\u5206\u5340\u5132\u5b58 \u7bc4\u4f8b<\/h1>\n<h4>Android Data and File Storage\u63d0\u4f9b\u4e86\u65b9\u4fbf\u4e14\u5b89\u5168\u7684\u6578\u64da\u548c\u6587\u4ef6\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\uff0c\u4ee5\u4fdd\u8b77\u7528\u6236\u96b1\u79c1\u548c\u6578\u64da\u5b89\u5168\u3002<\/h4>\n<h4>\u5b83\u53ef\u4ee5\u70ba\u6bcf\u500b\u61c9\u7528\u7a0b\u5e8f\u63d0\u4f9b\u500b\u4eba\u7684\u5132\u5b58\u5340\uff0c\u5e6b\u52a9\u4fdd\u8b77\u6578\u64da\uff0c\u907f\u514d\u672a\u6388\u6b0a\u7684\u5b58\u53d6\u3002<\/h4>\n<h4>Android Data and File Storage \u4e5f\u652f\u6301\u5167\u90e8\u548c\u5916\u90e8\u5b58\u5132\u8a2d\u5099\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\uff0c\u9ad8\u6548\u7387\u5730\u5132\u5b58\u548c\u7372\u53d6\u4fe1\u606f\u3002<\/h4>\n<hr \/>\n<h4>\u6587\u7ae0\u76ee\u9304<\/h4>\n<ol>\n<li><a href=\"#a\">\u5167\u90e8\u5132\u5b58(Internal storage)<\/a><\/li>\n<li><a href=\"#b\">\u5916\u90e8\u5132\u5b58(External storage)<\/a><\/li>\n<li><a href=\"#c\">\u5206\u5340\u5132\u5b58(Scope storage)<\/a><\/li>\n<li><a href=\"#d\">\u7e3d\u7d50<\/a><\/li>\n<li><a href=\"#e\">Developer Documents Data and File Storage<\/a><\/li>\n<\/ol>\n<hr \/>\n<p><a id=\"a\"><\/a><\/p>\n<h4>1.\u5167\u90e8\u5132\u5b58(Internal storage)<\/h4>\n<h5>1\u53ea\u6709\u81ea\u5df1APP\u53ef\u4ee5\u8a2a\u554f\u5230<\/h5>\n<h5>2.\u6a94\u6848\u6703\u96a8\u8457APP\u88ab\u522a\u9664\u800c\u907a\u5931<\/h5>\n<h5>File\u8cc7\u6599\u593e<\/h5>\n<pre><code class=\"language-kotlin line-numbers\">val file = File(filesDir, \"test.jpg\")\nfile.createNewFile()\n<\/code><\/pre>\n<pre><code class=\"language-path line-numbers\">path:\ndata\/user\/0\/{packageName}\/files\/test.jpg\n\nDevice File Explorer:\ndata\/data\/{packageName}\/files\/test.jpg\n<\/code><\/pre>\n<h5>Cache\u8cc7\u6599\u593e<\/h5>\n<pre><code class=\"language-kotlin line-numbers\">val cache = File(cacheDir, \"test.jpg\")\ncache.createNewFile()\n<\/code><\/pre>\n<pre><code class=\"language-path line-numbers\">path:\ndata\/user\/0\/{packageName}\/cache\/test.jpg\n\nDevice File Explorer:\ndata\/data\/{packageName}\/cache\/test.jpg\n<\/code><\/pre>\n<h5>\u81ea\u8a02\u8cc7\u6599\u593e\u540d\u7a31<\/h5>\n<pre><code class=\"language-kotlin line-numbers\">val myFile = File(getDir(\"myFile\", Context.MODE_PRIVATE), \"test.jpg\")\nmyFile.createNewFile()\n<\/code><\/pre>\n<pre><code class=\"language-path line-numbers\">path:\ndata\/user\/0\/{packageName}\/app_myFile\/test.jpg\n\nDevice File Explorer:\ndata\/data\/{packageName}\/app_myFile\/test.jpg\n<\/code><\/pre>\n<p><a id=\"b\"><\/a><\/p>\n<h4>2.\u5916\u90e8\u5132\u5b58(External storage)<\/h4>\n<h5>\u5206\u70ba\u6a5f\u8eab\u5916\u90e8\u5132\u5b58&amp;SD\u5361\u5916\u90e8\u5132\u5b58<\/h5>\n<h5>\u5224\u65b7\u662f\u5426\u6709\u88ddSD\u5361(\u6709\u88dd\u6703\u56de\u50b32\u500b)<\/h5>\n<pre><code class=\"language-kotlin line-numbers\">val files = getExternalFilesDirs(Environment.MEDIA_MOUNTED)\n<\/code><\/pre>\n<h4>\u6a5f\u8eab\u5916\u90e8\u5132\u5b58<\/h4>\n<h5>1.\u53ea\u6709\u81ea\u5df1APP\u53ef\u4ee5\u8a2a\u554f\u5230<\/h5>\n<h5>2.\u6a94\u6848\u6703\u96a8\u8457APP\u88ab\u522a\u9664\u800c\u907a\u5931<\/h5>\n<h5>File\u8cc7\u6599\u593e\u4e0b\u81ea\u8a02\u8cc7\u6599\u593e<\/h5>\n<pre><code class=\"language-kotlin line-numbers\">val externalFilesDir = File(getExternalFilesDir(\"myFile\"), \"test.jpg\")\nexternalFilesDir.createNewFile()\n<\/code><\/pre>\n<pre><code class=\"language-path line-numbers\">path:\nstorage\/emulated\/0\/Android\/data\/{packageName}\/files\/myFile\/test.jpg\n\nDevice File Explorer:\nsdcard\/Android\/data\/{packageName}\/files\/myFile\/test.jpg\n<\/code><\/pre>\n<h5>Cache\u8cc7\u6599\u593e<\/h5>\n<pre><code class=\"language-kotlin line-numbers\">val externalCacheDir = File(externalCacheDir, \"test.jpg\")\nexternalCacheDir.createNewFile()\n<\/code><\/pre>\n<pre><code class=\"language-path line-numbers\">path:\nstorage\/emulated\/0\/Android\/data\/{packageName}\/cache\/test.jpg\n\nDevice File Explorer:\nsdcard\/Android\/data\/{packageName}\/cache\/test.jpg\n<\/code><\/pre>\n<h4>SD\u5361\u5916\u90e8\u5132\u5b58<\/h4>\n<h5>1.\u6240\u6709APP\u90fd\u53ef\u4ee5\u8a2a\u554f\u5230<\/h5>\n<h5>2.\u6a94\u6848\u4e0d\u6703\u96a8\u8457APP\u88ab\u522a\u9664\u800c\u907a\u5931<\/h5>\n<h5>\u5132\u5b58\u5716\u7247<\/h5>\n<pre><code class=\"language-kotlin line-numbers\">val contentValues = ContentValues()\ncontentValues.put(MediaStore.Images.Media.DISPLAY_NAME, \"\u5716\u7247\u540d\u7a31\")\ncontentValues.put(MediaStore.Images.Media.MIME_TYPE, MimeType._png.value)\nval uri = contentResolver.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues)\n\nval bitmap = BitmapFactory.decodeResource(resources, R.drawable.girl)\nval outputStream = contentResolver.openOutputStream(uri!!)\nbitmap.compress(Bitmap.CompressFormat.JPEG, 100, outputStream)\noutputStream?.close()\n<\/code><\/pre>\n<h5>\u5132\u5b58\u97f3\u6a02<\/h5>\n<pre><code class=\"language-kotlin line-numbers\">val contentValues = ContentValues()\ncontentValues.put(MediaStore.Audio.Media.DISPLAY_NAME, \"\u97f3\u6a02\u540d\u7a31\")\ncontentValues.put(MediaStore.Audio.Media.MIME_TYPE, MimeType._mp3.value)\nval uri = contentResolver.insert(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, contentValues)\n\nval bitmap = BitmapFactory.decodeResource(resources, R.drawable.girl)\nval outputStream = contentResolver.openOutputStream(uri!!)\nbitmap.compress(Bitmap.CompressFormat.JPEG, 100, outputStream)\noutputStream?.close()\n<\/code><\/pre>\n<h5>\u5132\u5b58\u5f71\u7247<\/h5>\n<pre><code class=\"language-kotlin line-numbers\">val contentValues = ContentValues()\ncontentValues.put(MediaStore.Video.Media.DISPLAY_NAME, \"\u5f71\u7247\u540d\u7a31\")\ncontentValues.put(MediaStore.Video.Media.MIME_TYPE, MimeType._mp4.value)\nval uri = contentResolver.insert(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, contentValues)\n\nval bitmap = BitmapFactory.decodeResource(resources, R.drawable.girl)\nval outputStream = contentResolver.openOutputStream(uri!!)\nbitmap.compress(Bitmap.CompressFormat.JPEG, 100, outputStream)\noutputStream?.close()\n<\/code><\/pre>\n<h5>\u5132\u5b58\u6a94\u6848<\/h5>\n<pre><code class=\"language-kotlin line-numbers\">val contentValues = ContentValues()\ncontentValues.put(MediaStore.Files.FileColumns.DISPLAY_NAME, \"\u6a94\u6848\u540d\u7a31\")\ncontentValues.put(MediaStore.Files.FileColumns.MIME_TYPE, MimeType._pdf.value)\nval uri = contentResolver.insert(MediaStore.Files.getContentUri(\"external\"), contentValues)\n\nval bitmap = BitmapFactory.decodeResource(resources, R.drawable.girl)\nval outputStream = contentResolver.openOutputStream(uri!!)\nbitmap.compress(Bitmap.CompressFormat.JPEG, 100, outputStream)\noutputStream?.close()\n<\/code><\/pre>\n<h5>MimeType<\/h5>\n<pre><code class=\"language-kotlin line-numbers\">enum class MimeType(val value: String) {\n    _png(\"image\/png\"),\n    _jpeg(\"image\/jpeg\"),\n    _webp(\"image\/webp\"),\n    _gif(\"image\/gif\"),\n    _bmp(\"image\/bmp\"),\n    _3gp(\"video\/3gpp\"),\n    _apk(\"application\/vnd.android.package-archive\"),\n    _asf(\"video\/x-ms-asf\"),\n    _avi(\"video\/x-msvideo\"),\n    _bin(\"application\/octet-stream\"),\n    _c(\"text\/plain\"),\n    _class(\"application\/octet-stream\"),\n    _conf(\"text\/plain\"),\n    _cpp(\"text\/plain\"),\n    _doc(\"application\/msword\"),\n    _docx(\"application\/vnd.openxmlformats-officedocument.wordprocessingml.document\"),\n    _xls(\"application\/vnd.ms-excel\"),\n    _xlsx(\"application\/vnd.openxmlformats-officedocument.spreadsheetml.sheet\"),\n    _exe(\"application\/octet-stream\"),\n    _gtar(\"application\/x-gtar\"),\n    _gz(\"application\/x-gzip\"),\n    _h(\"text\/plain\"),\n    _htm(\"text\/html\"),\n    _html(\"text\/html\"),\n    _jar(\"application\/java-archive\"),\n    _java(\"text\/plain\"),\n    _js(\"application\/x-javascript\"),\n    _log(\"text\/plain\"),\n    _m3u(\"audio\/x-mpegurl\"),\n    _m4a(\"audio\/mp4a-latm\"),\n    _m4b(\"audio\/mp4a-latm\"),\n    _m4p(\"audio\/mp4a-latm\"),\n    _m4u(\"video\/vnd.mpegurl\"),\n    _m4v(\"video\/x-m4v\"),\n    _mov(\"video\/quicktime\"),\n    _mp2(\"audio\/x-mpeg\"),\n    _mp3(\"audio\/x-mpeg\"),\n    _mp4(\"video\/mp4\"),\n    _mpc(\"application\/vnd.mpohun.certificate\"),\n    _mpe(\"video\/mpeg\"),\n    _mpeg(\"video\/mpeg\"),\n    _mpg(\"video\/mpeg\"),\n    _mpg4(\"video\/mp4\"),\n    _mpga(\"audio\/mpeg\"),\n    _msg(\"application\/vnd.ms-outlook\"),\n    _ogg(\"audio\/ogg\"),\n    _pdf(\"application\/pdf\"),\n    _pps(\"application\/vnd.ms-powerpoint\"),\n    _ppt(\"application\/vnd.ms-powerpoint\"),\n    _pptx(\"application\/vnd.openxmlformats-officedocument.presentationml.presentation\"),\n    _prop(\"text\/plain\"),\n    _rc(\"text\/plain\"),\n    _rmvb(\"audio\/x-pn-realaudio\"),\n    _rtf(\"application\/rtf\"),\n    _sh(\"text\/plain\"),\n    _tar(\"application\/x-tar\"),\n    _tgz(\"application\/x-compressed\"),\n    _txt(\"text\/plain\"),\n    _wav(\"audio\/x-wav\"),\n    _wma(\"audio\/x-ms-wma\"),\n    _wmv(\"audio\/x-ms-wmv\"),\n    _wps(\"application\/vnd.ms-works\"),\n    _xml(\"text\/plain\"),\n    _z(\"application\/x-compress\"),\n    _zip(\"application\/x-zip-compressed\"),\n    _0(\"*\/*\");\n\n    companion object {\n        fun isImage(mimeType: String?): Boolean {\n            return mimeType?.let {\n                _webp.value == mimeType ||\n                        _png.value == mimeType ||\n                        _jpeg.value == mimeType ||\n                        _bmp.value == mimeType ||\n                        _gif.value == mimeType\n            } ?: false\n        }\n\n        fun isGif(mimeType: String?): Boolean {\n            return mimeType?.let {\n                _gif.value == mimeType\n            } ?: false\n        }\n\n        fun isApk(mimeType: String?) = mimeType?.let {\n            _apk.value == mimeType\n        } ?: false\n\n        fun isVideo(mimeType: String?) = mimeType?.let {\n            _m3u.value == mimeType || _avi.value == mimeType\n        } ?: false\n    }\n}\n<\/code><\/pre>\n<p><a id=\"c\"><\/a><\/p>\n<h4>3.\u5206\u5340\u5132\u5b58(Scope storage)<\/h4>\n<h5>\u5206\u5340\u5132\u5b58\u662f\u70ba\u4e86\u964d\u4f4eAPP\u7684\u6b0a\u9650\uff0c\u4f86\u907f\u514d\u5916\u90e8\u5132\u5b58\u6709\u904e\u591a\u7684\u8cc7\u6599\u593e\uff0c\u5f8c\u7e8c\u5982\u679c\u8981\u4f7f\u7528\u5916\u90e8\u5132\u5b58 \u5c31\u53ea\u80fd\u4f7f\u7528 contentResolver \u53bb\u5be6\u73fe\uff0c\u4e26\u4e14\u7121\u6cd5\u5728\u65b0\u5efa\u81ea\u5df1\u60f3\u8981\u7684\u8cc7\u6599\u593e<\/h5>\n<\/h5>\n<p><a id=\"d\"><\/a><\/p>\n<h4>4.\u7e3d\u7d50<\/h4>\n<h5>1.data \u8def\u5f91\u958b\u982d > \u5167\u90e8<\/h5>\n<h5>2.storage \u8def\u5f91\u958b\u982d &amp; API \u5e36\u6709 external > \u5916\u90e8<\/h5>\n<h5>3.\u53ea\u8981\u8def\u5f91\u90fd\u6709\u5305\u542b packageName \u90fd\u6703\u96a8\u8457 APP \u522a\u9664\u4e00\u8d77\u522a\u6389<\/h5>\n<h5>4.\u6e05\u9664\u7f13\u5b58 \u662f\u6e05\u5b58 APP \u904b\u884c\u4e2d\u7522\u751f\u7684\u81e8\u6642\u6578\u64da\u4e0d\u6703\u6e05\u7406\u5230\u6a94\u6848<\/h5>\n<h5>5.\u6e05\u9664\u6578\u64da \u662f\u6e05\u9664\u6240\u6709 packageName \u4e0b\u7684\u6240\u6709\u6a94\u6848<\/h5>\n<p><a id=\"e\"><\/a><\/p>\n<h4>5.Developer Documents Data and File Storage<\/h4>\n<p><a class=\"wp-editor-md-post-content-link\" href=\"https:\/\/developer.android.com\/training\/data-storage\" title=\"Open in Documents Data and File Storage\" target=\"_blank\" rel=\"noopener\">Open in Documents Data and File Storage<\/a><\/p>\n\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>\u3010Android\u3011Data and File Storage \u5167\u90e8\u5132\u5b58&amp;\u5916\u90e8\u5132\u5b58&amp;\u5206\u5340\u5132\u5b58 \u7bc4 &hellip; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"pgc_sgb_lightbox_settings":"","footnotes":""},"categories":[5],"tags":[13,153,222],"class_list":["post-1295","post","type-post","status-publish","format-standard","hentry","category-android","tag-android","tag-storage","tag-222"],"_links":{"self":[{"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/posts\/1295","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/comments?post=1295"}],"version-history":[{"count":6,"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/posts\/1295\/revisions"}],"predecessor-version":[{"id":1634,"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/posts\/1295\/revisions\/1634"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/media?parent=1295"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/categories?post=1295"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/tags?post=1295"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}