Some tips on loading _flash as

Recently in doing a flash, found a very strange problem, that is, loading progress bar is starting from 64%, and the progress bar appeared before, a blank, but upload space, but found loding completely ineffective, hope you help, I thought for 2 hours, The head is getting bigger. Here are the first two frames of code
First frame:
Totalb = _root.getbytestotal ();
loaded = _root.getbytesloaded ();
Trace (loaded);
per = Math.Round (loaded/totalb*100);
Trace (per);
_root.load_bar._xscale = per;
Loadper = per+ "%";
Second frame:
if (LOADED>=TOTALB) {
gotoAndPlay ("Scene 1", 1);
}
else{
gotoAndPlay (1);
}
Thanks for the first!

Stop ()
_root.createemptymovieclip ("Loading_mc", _root.getnexthighestdepth ())
Loading_mc.beginfill (0x5f6165)
Loading_mc.moveto (0, 10);
Loading_mc.lineto (0, 0);
Loading_mc.lineto (350, 0);
Loading_mc.lineto (350, 10);
Loading_mc.lineto (0, 10);
loading_mc._x=200
loading_mc._y=350
_root.createtextfield ("Loading_txt", _root.getnexthighestdepth (), 200,370,30,20)
Loading_txt.border=false
Loading_txt.multiline = true;
Loading_txt.wordwrap = true;
Loading_mc.onenterframe=function () {
if (_root.getbytesloaded () >=_root.getbytestotal ()) {
_root.play ()
_root. Loading_mc.removemovieclip ()
_root. Loading_txt.removetextfield ()
}else{
_root. Loading_mc._xscale= (_root.getbytesloaded ()/_root.getbytestotal ()) *100
_root. Loading_txt.text=int (Loading_mc._xscale). toString () + "%"
_root. loading_txt._x=loading_mc._width+200
}
}


It's OK to put it on frame 1th.

Code interpretation:
1 Let the movie stop playing at frame 1th;
2 Create a movie clip at the root path, which is the _root location, whose name is LOADING_MC, and its layer is deeply rooted in the first layer that is not currently used in the root path.
3 LOADING_MC film clips are filled with 0x5f6165 color;
4~8 move it to the X:0,y:10 position to start drawing, coordinates 0~350, height is 10;
9 its x-coordinate is equal to 200;
10 its Y coordinate is equal to 300;
11 in the root path to establish a text field, its name is loading_txt, its layer deep root path is not used in the last layer depth, its x-coordinate is 200,y coordinates 370, width is 30, height is 20;
12 its Border property border is false, that is, it does not have a border;
13 It can be multiple lines of text;
14 It can change lines automatically;
15 when the LOADING_MC movie clip starts playing, each play one frame, executes the following code once;
16 when the root path has already loaded bytes, exceeding or equal to its total byte;
17 paths begin to play;
18 and delete loading_mc this film clip;
19 by deleting loading_txt this field;
20 if the conditions are not tenable;
LOADING_MC the width scale of the movie clip, equal to the downloaded byte of the root path divided by the total byte of the root path, multiplied by 100;
Loading_txt the text content of the field, equal to the width of the scale of the value, after rounding, then converted to the character type, and then add the "%" percent sign;
23 and its coordinates are equal to the width of the LOADING_MC movie clip plus 200.

Thank you very much for Elocho's answer, but I think my question may be a little different because, even if I add the following two lines to the first frame
Trace ("Loaded");
Stop ();
It also took a long time to show loaded, and the progress bar stopped at 64%,
I think the movie is not loaded until 64% to start executing my code, I put the code in scene 1, the main movie put in Scene 2

Maybe I'm not right, just for reference.
First, I don't know what version you use, but your variable doesn't specify a data type.
Second, check the first frame, what big things do not. Don't put it in frame 1th.
Its third, _root.load_bar._xscale = per; This means that each is a numeric type, but. loadper = per+ "%" does not convert the data type to operate.
Its four, _root.getbytesloaded (); What do you mean by this scenario? If you want the whole thing, use _global.
Its five, gotoAndPlay ("Scene 1", 1), the use of Chinese characters to do the scene name, is not a procedure recommended by the practice.
What do you mean by six, Math.Round ()? Is it rounded? not accurate, change int bar.


Summary: Others are small problems, _root replaced by _global, may be the main problem,