問題描述
如何將字符串轉換為整數?
How do I convert a string into an integer?
我有一個文本框讓用戶輸入一個數字:
I have a textbox I have the user enter a number into:
EditText et = (EditText) findViewById(R.id.entry1);
String hello = et.getText().toString();
并將值賦給字符串hello.
我想把它轉換成一個整數，這樣我就可以得到他們輸入的數字；稍后將在代碼中使用.
I want to convert it to a integer so I can get the number they typed; it will be used later on in code.
有沒有辦法讓 EditText 變成一個整數?那將跳過中間人.如果沒有，字符串轉整數就可以了.
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.
推薦答案
查看 Integer 類和靜態 parseInt() 方法:
See the Integer class and the static parseInt() method:
http://developer.android.com/reference/java/lang/整數.html
Integer.parseInt(et.getText().toString());
您需要捕獲 NumberFormatException 以防在解析時出現問題，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);
}
這篇關于在Android上將字符串轉換為整數的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！