Java 如何将字符串拆分为android？
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How to split the string a android?
提问by Amrutha
I am working on android application. I am getting the image from gallery. Also I am getting the image path from gallery. Now my requirement is I want to get only the image name with the extension . How can I do that? Please help me.
我正在开发 android 应用程序。我正在从画廊获取图像。我也从画廊获取图像路径。现在我的要求是我只想获取带有扩展名的图像名称。我怎样才能做到这一点？请帮我。
String imgpath = "/mnt/sdcard/joke.png";
The image extension can be anything joke.pngor joke.jpeg. I need to get the image name with extension finally.
图像扩展名可以是任何内容joke.png或joke.jpeg. 我需要最终获得带有扩展名的图像名称。
i.e I want to split the above string and get only joke.png.
即我想拆分上面的字符串并只得到joke.png.
How can I achieve that? Please help me in this regard.
我怎样才能做到这一点？请在这方面帮助我。
采纳答案by Pankaj Kumar
String imgpath = "/mnt/sdcard/joke.png";
String result = imgpath.substring(imgpath.lastIndexOf("/") + 1);
System.out.println("Image name " + result);
Output :-
输出 ：-
Image name joke.png
You should read How do I get the file name from a String containing the Absolute file path?
回答by M.Sameer
You can do that in Android like in any Java program:
您可以像在任何 Java 程序中一样在 Android 中执行此操作：
String[] parts = imagepath.split("/");
String result = parts[parts.length-1];
回答by shivang Trivedi
String s[] = imgpath.split("/");
String result = s[s.length-1];
回答by ppeterka
You can get this with Regex too, if that is the hammer you have in your hands:
你也可以用正则表达式来得到这个，如果这是你手中的锤子：
String fileName = null;
Pattern pattern = Pattern.compile("(^|.*/)([^/]*)$");
Matcher m = pattern.getMatcher(filenameWithPath);
if(matcher.matches()) {
fileName = matcher.group(2);
}
But don't be tempted to do this.This is less readable, and probably even slower than the other methods.
但不要试图这样做。这不太可读，甚至可能比其他方法慢。
回答by vish
String imgName = imgpath.substring((imgpath.lastIndexOf("/") + 1), imgpath.length());
