flex as3:进度条不移动

我有点困,需要一些建议/帮助。

我有一个进度条:

<mx:ProgressBar id="appProgress" mode="manual" width="300" label="{appProgressMsg}" minimum="0" maximum="100"/>

我有两个侦听器函数,一个用于设置进度,另一个用于设置appprogressmsg:

public function incProgress(e:TEvent):void {
    var p:uint = Math.floor(e.data.number / e.data.total * 100);
    trace("Setting Perc." + p);
    appProgress.setProgress(p, 100);
}
public function setApplicationProgressStep(e:TEvent):void {
    trace("Setting step:" + e.data);
    appProgressMsg = e.data;
}

我想重新使用这个进度条。不一定是进展事件,但在经历步骤时。

例如,我循环了一系列数据库插入,并希望不注明进度等。

这是一个示例:

public function updateDatabase(result:Object):void {
    var total:int = 0;
    var i:int = 0;
    var r:SQLResult;
    trace("updateDatabase called.");
    for each (var table:XML in this.queries.elements("table")) {
        var key:String = table.attribute("name");
        if (result[key]) {
            send(TEvent.UpdateApplicationProgressStep, "Updating " + key);
            i = 1;
            total = result[key].length;
            for each (var row:Object in result[key]) {
                //now, we need to see if we already have this record.
                send(TEvent.UpdateApplicationProgress, { number:i, total: total } );
                r = this.query("select * from " + key + " where server_id = '" + row.id + "'");
                if (r.data == null) {
                    //there is no entry with this id, make one.
                    this.query(table.insert, row);
                } else {
                    //it exists, so let's update.
                    this.update(key, row);
                }
                i++;
            }
        }

    }
}

一切正常。

也就是说,调用侦听器函数,我得到如下跟踪输出:

updateDatabase called.
Setting step:Updating project
Setting Perc 25
Setting Perc 50
Setting Perc 75
Setting Perc 100

问题是,只显示最后的百分比和步骤。也就是说,完成后,进度条将跳到100%,并显示最后一步标签。

有人知道这是为什么吗?

事先感谢您的帮助, 杰森

新的代码,我可能会加上:

public function updateDatabase(result:Object, eindex:int = 0, sindex:int = 0 ):void {
    var total:int = 0;
    var i:int = 0;
    var j:int;
    var r:SQLResult;
    var table:XML;
    var key:String;
    var elems:XMLList = this.queries.elements("table");
    var startTime:int = getTimer();
    var row:Object;
    for (i = eindex; i < elems.length(); i++) {
        table = elems[i];
        key = table.attribute("name");
        if (!result[key])
            continue;
        total = result[key].length;
        send(TEvent.UpdateApplicationProgressStep, "Updating " + key);
        for (j = sindex; j < result[key].length; j++) {
            if (getTimer() - startTime > 100) {
                setTimeout(updateDatabase, 100, result, i, j);
                send(TEvent.UpdateApplicationProgress, { number:j, total: total } );
                return;
            }
            row = result[key][j];
            r = this.query("select * from " + key + " where server_id = '" + row.id + "'");
            if (r.data == null) {
                //there is no entry with this id, make one.
                this.query(table.insert, row,false);
            } else {
                //it exists, so let's update.
                this.update(key, row,false);
            }
        }
        send(TEvent.UpdateApplicationProgress, { number:1, total: 1 } );
    }
}