apache-flex - 使用 flash builder 4.5 将保存的内容加载回 flex air 中的位置

Question

我现在有了将多个组件文本保存到一个文件中的想法。但是现在当我打开该文件时，文件中的所有文本都只进入了一个组件的文本中。这是代码，

                        <s:click>

                            var f:File = File.desktopDirectory;

                            f.browseForSave("Save As");

                            f.addEventListener(Event.SELECT, function (event:Event):void {

                            var stream:FileStream = new FileStream();

                            stream.open((event.target as File),FileMode.WRITE);

                            stream.writeUTFBytes(rte.htmlText);

                            stream.writeUTFBytes(ta.text);

                            stream.writeUTFBytes(rich.text);

                            stream.close();

                            });

                        </s:click>

                    </s:Button>

                        <s:click>

                            var f:File = File.desktopDirectory;

                            f.browseForOpen("Select file to open", []);

                            f.addEventListener(Event.SELECT, function (event:Event):void {

                            var fs:FileStream = new FileStream();

                            fs.open(event.target as File, FileMode.READ);

                            rte.htmlText = fs.readUTFBytes(fs.bytesAvailable);

                            ta.text = fs.readUTFBytes(fs.bytesAvailable);

                            fs.close();

                            });

                        </s:click>

                    </s:Button>

一些建议？

Answer 1

您已经从 fs 读取了所有流。只要你执行一次 fs.readUTFBytes(fs.bytesAvailable); 读取的标头/指针将指示您文件的结尾，因此在下一行中 bytesAvailable 将为零。

我建议您使用以下代码：

<s:click>
    var f:File = File.desktopDirectory;
    f.browseForOpen("Select file to open", []);

    f.addEventListener(Event.SELECT, function (event:Event):void {
        var fs:FileStream = new FileStream();
        fs.open(event.target as File, FileMode.READ);

        var dataStr:String = fs.readUTFBytes(fs.bytesAvailable);

        rte.htmlText = dataStr;
        ta.text      = dataStr;

        // if you want only the non formatted text use:   ta.text = rte.text;
        fs.close();
});
</s:click>