从字符串的EditText浮动 [英] String from EditText to float
问题描述
我对将要使用的浮点数一个EditText。所以我想读取来自的EditText文本,并把它变成一个浮动的变量。但是,我似乎有一个文本浮动的问题。这是该行我有:
I have an EditText for which will be using for a float number. So I'm trying to read the text from the EditText and put it into a float variable. But I seem to have a text to float problem. This is the line I have:
float Number = ( ( EditText )findViewById( R.id.edit_float ) ).getText();
我已经使用Float.parseFloat(串),只是一般的铸造尝试过,但似乎没有做到这一点。我能做些什么吗?另外,有没有办法将其写入到一个变量之前,检查是否有有效的浮点数?
I've tried using Float.parseFloat(string) and just general casting, but nothing seem to do it. What can I do here? Also, is there a way to check for a valid float number before writing it to a variable?
推荐答案
试试这个。
EditText edt = (EditText) findViewById(R.id.edit_float);
float number = Float.valueOf(edt.getText().toString());
您使用的valueOf()
方法,如果浮动
包装类将字符串转换为float。在这个例子中,我得到的是,编辑
对象的EditText
与的getText()
对我称之为的toString()
办法从中获得一个字符串。
You use the valueOf()
method if the Float
wrapper class to convert a string to a float. IN this example I get the Editable
object of that EditText
with getText()
on which I call the toString()
method to obtain a string from it.
更新:完全正确的家伙遗憾。时间递增我的羊计数器。
Update: Totally right guys sorry. Time to increment my sheep counter.
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