问题描述
我如何将字符串转换成整数?
How do I convert a string into an integer?
我有一个文本框,我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();
和值分配给字符串你好
。
我想将其转换为整数,这样我就可以得到他们所输入的号码;它将用于以后的code。
I want to convert it to a integer so I can get the number they typed; it will be used later on in code.
有没有办法让的EditText
来一个整数?这将跳过中间人。如果没有,字符串整数会就好了。
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
请参阅Integer类和静态parseInt()函数的方法:
See the Integer class and the static parseInt() method:
http://developer.android.com/reference/java/lang/Integer.html
Integer.parseInt(et.getText().toString());
您将需要捕捉,虽然NumberFormatException的问题的情况下,同时解析,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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