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README_TEMP.md

File metadata and controls

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FileUri.kt

private fun testPath(uri: Uri): String? {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
        getAllPdf()
    }
    /*
      todo 2021年9月7日 17:00:11
      getDataColumn -> Volume content://com.android.providers.downloads.documents/document/msf%3A51 not found
      https://developer.android.com/reference/android/provider/MediaStore.Downloads

      content://com.android.providers.downloads.documents/document/msf%3A51
      转换为
      content://media/content%3A%2F%2Fcom.android.providers.downloads.documents%2Fdocument%2Fmsf%253A51/downloads
     */
    var path = getDataColumn(uri)
    if (path.isNullOrBlank()) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
            /*
            侧边栏->Download :
                __________________
                content://com.android.providers.downloads.documents/document/msf:51
                content://media/external/downloads
                msf:51
                content://media/external/downloads/document/msf:51
                content://media/document/msf:51
                __________________
                com.ando.file.sample E/ActivityThread: Failed to find provider info for media/external/downloads

            侧边栏->手机图标进入:
                Uri:       content://com.android.externalstorage.documents/document/primary:Download/AAA/[高清 720P] 川普优选又来了？.flv
                Authority: com.android.externalstorage.documents
                Segments:  [document, primary:Download/AAA/[高清 720P] 川普优选又来了？.flv]
             */
            FileLogger.e("""
                __________________
                $uri                                   
                ${MediaStore.Downloads.getContentUri(MediaStore.VOLUME_EXTERNAL)}
                ${DocumentsContract.getDocumentId(uri)}
            }
                __________________
                """.trimIndent())
            path =
                getDataColumn(DocumentsContract.buildDocumentUri("com.android.externalstorage.documents" + "/document/primary:Download",
                    DocumentsContract.getDocumentId(uri)))
        }
    }
    return path
}

@RequiresApi(Build.VERSION_CODES.Q)
private fun getAllPdf() { //查询sd卡所有pdf文件
    val uri = MediaStore.Files.getContentUri(MediaStore.VOLUME_EXTERNAL)
    val projection: Array<String>? = null
    val sortOrder: String? = null // unordered
    // only pdf
    val selectionMimeType = "${MediaStore.Files.FileColumns.MIME_TYPE}=?"
    val mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension("pdf")
    val selectionArgsPdf = arrayOf(mimeType)
    val cursor = FileOperator.getContext().contentResolver.query(uri, projection, selectionMimeType, selectionArgsPdf, sortOrder)
    while (cursor != null && cursor.moveToNext()) {
        val column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA)
        val filePath = cursor.getString(column_index) //所有pdf文件路径
        FileLogger.d("getAllPdf() filePath=$filePath")
    }
    cursor?.close()
}

2021年9月27日 14:35:11 拼接路径的方式...

val displayName: String = FileUtils.getFileNameFromUri(uri) ?: return null
val pathAndName = "${context.getExternalFilesDir(null)?.absolutePath}/Documents/Download/$displayName"
FileLogger.e("Append ___ $displayName; $pathAndName; ${File(pathAndName).isFile} ; ${File(pathAndName).isDirectory}")
return pathAndName
/*
/storage/emulated/0/Download/AAA/[高清 720P] 川普优选又来了？.flv
/storage/emulated/0/Download/[高清 720P] 川普优选又来了？.flv

/storage/emulated/0/Android/data/com.ando.file.sample/files/Documents/Download/AAA/[高清 720P] 川普优选又来了？.flv
 */
//return getDataColumn(uri)

2021年11月1日 10:38:58 解析目录内容, Q以上不行.

/**
* content://com.android.providers.media.documents/document/image:53283
* /storage/emulated/0/DCIM/Screenshots/Games/Screenshot_2021_0828_220956_com.tencent.tmgp.sgame.jpg
*
* 路飞
* content://com.android.externalstorage.documents/document/primary:aaaaa/1548551182723.png
* /storage/emulated/0/Android/data/com.ando.file.sample/files/Documents/aaaaa/1548551182723.png
*/
fun proceedFileDir(dirPath: String, vararg suffixTypes: String): Map<String, Long>? {
    val dir = File(dirPath)
    if (!dir.exists() || !dir.isDirectory) return null

    val suffixSizeMap = ArrayMap<String, Long>()
    val dirFiles = dir.listFiles()
    if (dirFiles.isNullOrEmpty()) return null
    dirFiles.forEach { f: File ->
        val suffix = FileUtils.getExtension(f.absolutePath)
        if (suffixTypes.contains(suffix)) {
            if (!suffixSizeMap.keys.contains(suffix)) {
                suffixSizeMap.keys.add(suffix)
            }
            suffixSizeMap[suffix] = suffixSizeMap[suffix]?.plus(FileSizeUtils.getFileSize(f))
        }
    }
    return suffixSizeMap
}