问题描述
如何将字符串转换为整数?
How do I convert a string into an integer?
我有一个文本框让用户输入一个数字:
I have a textbox I have the user enter a number into:
EditText et = (EditText) findViewById(R.id.entry1);
String hello = et.getText().toString();
并将值赋给字符串hello.
我想把它转换成一个整数，这样我就可以得到他们输入的数字；稍后将在代码中使用.
I want to convert it to a integer so I can get the number they typed; it will be used later on in code.
有没有办法让 EditText 变成一个整数?那将跳过中间人.如果没有，字符串转整数就可以了.
Is there a way to get the EditText to a integer? That would skip the middle man. If not, string to integer will be just fine.
推荐答案
查看 Integer 类和静态 parseInt() 方法:
See the Integer class and the static parseInt() method:
http://developer.android.com/reference/java/lang/整数.html
Integer.parseInt(et.getText().toString());
您需要捕获 NumberFormatException 以防在解析时出现问题，因此:
You will need to catch NumberFormatException though in case of problems whilst parsing, so:
int myNum = 0;
try {
myNum = Integer.parseInt(et.getText().toString());
} catch(NumberFormatException nfe) {
System.out.println("Could not parse " + nfe);
}
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