1，写入到文件
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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();
} |