我有一个带有 "text = 0.00"
的 EditText
.当我按数字 3 时,它应该是 0.03
,当我第二次按数字 5 时,文本应该是 0.35
.还有35.0
、35.09
这样的.EditText
最初的值为 0.00
.
I have an EditText
with "text = 0.00"
. When I press the number 3, it should be like 0.03
and the second time when I press the number 5, the text should be 0.35
. And 35.0
, 35.09
like this. The EditText
initially has the value of 0.00
.
这些都是用相同的EditText
完成的.
These are all done with the same EditText
.
我如何实现这一目标?我尝试将 addTextChangedListener()
与 TextWatcher()
一起使用.
How do I achieve this? I have tried using addTextChangedListener()
with TextWatcher()
.
你选择了正确的方法.您必须使用 TextWatcher 扩展类并覆盖 afterTextChanged()
、beforeTextChanged()
、onTextChanged()
.
You have selected correct approach. You have to extend the class with TextWatcher and override afterTextChanged()
,beforeTextChanged()
, onTextChanged()
.
你必须在 afterTextChanged()
方法中编写你想要的逻辑来实现你需要的功能.
You have to write your desired logic in afterTextChanged()
method to achieve functionality needed by you.
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