如何采取截图？ [英] How to take a screenshots?

问题描述

我开发一个应用程序，它是能够采取截屏，我发现下面的code，让我这样做

I am developing an app which is able to take screen shots and I found the following code which allows me to do that

Toast.makeText(this, formattedDate, Toast.LENGTH_SHORT).show();
Process sh = Runtime.getRuntime().exec("su", null,null);
OutputStream  os = sh.getOutputStream();
os.write(("/system/bin/screencap -p " + "/sdcard/img.png").getBytes("ASCII"));
os.flush();

它保存图像与图像的名字我可以在code改变它，但我想要的当前日期和时间作为名称。我想puttinge这样的：

It saves the image with image name I can change it in code but I want the current date and time as the name. I tried puttinge this:

Calendar c = Calendar.getInstance();
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String formattedDate = df.format(c.getTime());

但把formattedDate在图像的地方它不工作后

But after putting formattedDate at the place of image it does not work

推荐答案

在某些情况下，有一个：字符的文件名是不允许的。你可能希望将其替换为。或 -

in some cases having a ":" character in the filename is not allowed. You might want to replace it with "." or "-".

编辑：

试试这个：

os.write(("/system/bin/screencap -p " + "\"/sdcard/"+formattedDate+".png\"").getBytes("ASCII"));

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