关于android:Android从Uri获取视频图片的真实地址

Android 因为各个版本的差别，加上对文件权限治理的一直降级，如何获取图片视频地址变得越来越简单，上面是一个工具类，能够方便快捷的获取图片视频的实在地址。

import android.content.ContentUris
import android.content.Context
import android.database.Cursor
import android.net.Uri
import android.os.Build
import android.os.Environment
import android.provider.DocumentsContract
import android.provider.MediaStore

class URIPathHelper {fun getPath(context: Context, uri: Uri): String? {
        val isKitKatorAbove = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT

        // DocumentProvider
        if (isKitKatorAbove && DocumentsContract.isDocumentUri(context, uri)) {
            // ExternalStorageProvider
            if (isExternalStorageDocument(uri)) {val docId = DocumentsContract.getDocumentId(uri)
                val split = docId.split(":".toRegex()).toTypedArray()
                val type = split[0]
                if ("primary".equals(type, ignoreCase = true)) {return Environment.getExternalStorageDirectory().toString() + "/" + split[1]
                }

            } else if (isDownloadsDocument(uri)) {val id = DocumentsContract.getDocumentId(uri)
                val contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), java.lang.Long.valueOf(id))
                return getDataColumn(context, contentUri, null, null)
            } else if (isMediaDocument(uri)) {val docId = DocumentsContract.getDocumentId(uri)
                val split = docId.split(":".toRegex()).toTypedArray()
                val type = split[0]
                var contentUri: Uri? = null
                if ("image" == type) {contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI} else if ("video" == type) {contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI} else if ("audio" == type) {contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI}
                val selection = "_id=?"
                val selectionArgs = arrayOf(split[1])
                return getDataColumn(context, contentUri, selection, selectionArgs)
            }
        } else if ("content".equals(uri.scheme, ignoreCase = true)) {return getDataColumn(context, uri, null, null)
        } else if ("file".equals(uri.scheme, ignoreCase = true)) {return uri.path}
        return null
    }

    fun getDataColumn(context: Context, uri: Uri?, selection: String?, selectionArgs: Array<String>?): String? {
        var cursor: Cursor? = null
        val column = "_data"
        val projection = arrayOf(column)
        try {cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,null)
            if (cursor != null && cursor.moveToFirst()) {val column_index: Int = cursor.getColumnIndexOrThrow(column)
                return cursor.getString(column_index)
            }
        } finally {if (cursor != null) cursor.close()}
        return null
    }

    fun isExternalStorageDocument(uri: Uri): Boolean {return "com.android.externalstorage.documents" == uri.authority}

    fun isDownloadsDocument(uri: Uri): Boolean {return "com.android.providers.downloads.documents" == uri.authority}

    fun isMediaDocument(uri: Uri): Boolean {return "com.android.providers.media.documents" == uri.authority}
}

目前在我的项目中应用失常，有异样能够在评论说进去