标签:pos ati number mode pen 写入 date pad exist
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var fileObj:File = File.documentsDirectory.resolvePath( "hangge.txt" ); var fs:FileStream = new FileStream(); fs.open(fileObj, FileMode.WRITE); fs.writeUTFBytes( "hangge.com" ); fs.close(); |
2,更新文件内容
(1)下面例子在第5个字节开始覆写内容
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var fileObj:File = File.documentsDirectory.resolvePath( "hangge.txt" ); var fs:FileStream = new FileStream(); fs.open(fileObj, FileMode.UPDATE); fs.position = 5 ; fs.writeUTFBytes( ".yuhang" ); fs.close(); |
(2)下面例子将内容添加到文件末尾
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var fileObj:File = File.documentsDirectory.resolvePath( "hangge.txt" ); var fs:FileStream = new FileStream(); fs.open(fileObj, FileMode.APPEND); fs.writeUTFBytes( "www.hangge.com" ); fs.close(); |
3,读取文件内容
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var fileObj:File = File.documentsDirectory.resolvePath( "hangge.txt" ); var fs:FileStream = new FileStream(); fs.open(fileObj, FileMode.READ); var str: String = fs.readUTFBytes(fs.bytesAvailable); fs.close(); |
4,移动文件
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var originalFile:File = File.documentsDirectory.resolvePath( "hangge.txt" ); var newDir:File = File.applicationStorageDirectory.resolvePath( "hangge.txt" ); originalFile.moveTo(newDir); |
5,复制文件
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var originalFile:File = File.documentsDirectory.resolvePath( "hangge.txt" ); var newDir:File = File.applicationStorageDirectory.resolvePath( "hangge.txt" ); originalFile.copyTo(newDir); |
6,删除文件
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var fileObj:File = File.documentsDirectory.resolvePath( "hangge.txt" ); if (fileObj.exists){ fileObj.deleteFile(); } |
7,创建文件夹
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var fileDir:File = File.documentsDirectory.resolvePath( "hangge" ); fileDir.createDirectory(); |
8,移动文件夹
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var originalDir:File = File.documentsDirectory.resolvePath( "hangge" ); var newDir:File = File.applicationStorageDirectory.resolvePath( "hangge" ); originalDir.moveTo(newDir); |
9,复制文件夹
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var originalDir:File = File.documentsDirectory.resolvePath( "hangge" ); var newDir:File = File.applicationStorageDirectory.resolvePath( "hangge" ); originalDir.copyTo(newDir); |
10,删除文件夹
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var fileDir:File = File.documentsDirectory.resolvePath( "hangge" ); if (fileDir.exists){ fileDir.deleteDirectory(); } |
标签:pos ati number mode pen 写入 date pad exist
原文地址:https://www.cnblogs.com/dt1991/p/9559388.html