io.rong.imkit.picture.tools

Class FileUtils

java.lang.Object

io.rong.imkit.picture.tools.FileUtils

public class FileUtils
extends java.lang.Object

Version:

2013-12-11

Author:

Peli, paulburke (ipaulpro)

Method Summary

Modifier and Type	Method and Description
static boolean	copyFile(java.io.FileInputStream fileInputStream, java.lang.String outFilePath) Copies one file into the other with the given paths.
static java.lang.String	extSuffix(java.io.InputStream input)
static java.lang.String	getCreateFileName(java.lang.String prefix) 根据时间戳创建文件名
static java.lang.String	getDataColumn(android.content.Context context, android.net.Uri uri, java.lang.String selection, java.lang.String[] selectionArgs) Get the value of the data column for this Uri.
static java.lang.String	getPath(android.content.Context context, android.net.Uri uri) Get a file path from a Uri.
static boolean	isDownloadsDocument(android.net.Uri uri)
static boolean	isExternalStorageDocument(android.net.Uri uri)
static boolean	isGif(java.lang.String mimeType) 是否是gif
static boolean	isGifForSuffix(java.lang.String suffix)
static boolean	isGooglePhotosUri(android.net.Uri uri)
static boolean	isHttp(java.lang.String path) 是否是网络图片
static boolean	isMediaDocument(android.net.Uri uri)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

isExternalStorageDocument

public static boolean isExternalStorageDocument(android.net.Uri uri)

Parameters:

uri - The Uri to check.

Returns:

Whether the Uri authority is ExternalStorageProvider.

isDownloadsDocument

public static boolean isDownloadsDocument(android.net.Uri uri)

Parameters:

uri - The Uri to check.

Returns:

Whether the Uri authority is DownloadsProvider.

isMediaDocument

public static boolean isMediaDocument(android.net.Uri uri)

Parameters:

uri - The Uri to check.

Returns:

Whether the Uri authority is MediaProvider.

isGooglePhotosUri

public static boolean isGooglePhotosUri(android.net.Uri uri)

Parameters:

uri - The Uri to check.

Returns:

Whether the Uri authority is Google Photos.

getDataColumn

public static java.lang.String getDataColumn(android.content.Context context,
                                             android.net.Uri uri,
                                             java.lang.String selection,
                                             java.lang.String[] selectionArgs)

Get the value of the data column for this Uri. This is useful for MediaStore Uris, and other file-based ContentProviders.

Parameters:

context - The context.

uri - The Uri to query.

selection - (Optional) Filter used in the query.

selectionArgs - (Optional) Selection arguments used in the query.

Returns:

The value of the _data column, which is typically a file path.

getPath

public static java.lang.String getPath(android.content.Context context,
                                       android.net.Uri uri)

Get a file path from a Uri. This will get the the path for Storage Access Framework Documents, as well as the _data field for the MediaStore and other file-based ContentProviders.

Callers should check whether the path is local before assuming it represents a local file.

Parameters:

context - The context.

uri - The Uri to query.

isGifForSuffix

public static boolean isGifForSuffix(java.lang.String suffix)

isGif

public static boolean isGif(java.lang.String mimeType)

是否是gif

Parameters:

mimeType -

Returns:

isHttp

public static boolean isHttp(java.lang.String path)

是否是网络图片

Parameters:

path -

Returns:

copyFile

public static boolean copyFile(java.io.FileInputStream fileInputStream,
                               java.lang.String outFilePath)

Copies one file into the other with the given paths. In the event that the paths are the same, trying to copy one file to the other will cause both files to become null. Simply skipping this step if the paths are identical.

extSuffix

public static java.lang.String extSuffix(java.io.InputStream input)

getCreateFileName

public static java.lang.String getCreateFileName(java.lang.String prefix)

根据时间戳创建文件名

Parameters:

prefix - 前缀名

Returns: