如何获取code的EditText最大长度设置 [英] How to Get EditText maxLength setting in code
问题描述
我想看到的最大长度
的的EditText
在运行时能够使文本显示决定。
这可能吗?
I would like to see the maxLength
of an EditText
at run time to be able to make a text display decision.
Is that possible?
下面是我wan't做了说明。
Here is a description of what I wan't to do.
我有很多行,每行一个ListView有一个EditText和一个TextView。
我做了ArrayAdapter的一个子类,能够养活,我想在每行的EditText把字符串。
我已经设置 Android版本:最大长度=12
在XML文件中
。
我想显示一些在这的EditText领域,但如果我想显示的数量已经超过 Android版本:最大长度=12
我要显示一个错误信息来代替。
I have a ListView with many rows and each row have an EditText and a TextView.
I've made a subclass of ArrayAdapter to be able to feed the String that I want to place in the EditText of each row.
I have set android:maxLength="12"
in the XML file.
I want to display a number in that EditText field, but if the number I want to display has more than android:maxLength="12"
I want to display an "error message" instead.
和我preFER不是要拼命code,在我的ArrayAdapter的子类12。
And I would prefer not to hard code that 12 in my subclass of ArrayAdapter.
有可能是一个简单的解决方案,但我还没有找到它。
(机器人第一次......)
There is probably a simple solution, but I haven't found it yet.
(android first time...)
推荐答案
只有有限的参数都有自己的干将,所以我不认为你可以读取它。
Only limited parameters have their getters, so I don't think you can read it .
所以写长度(说12)值的文件夹,并用它在XML布局和arrayAdapter。 现在,它不是硬codeD。
So write length (Say 12) in values folder and use it in xml layout and arrayAdapter . Now its not hard-coded .
1)创建integer.xml价值观* 的
1)Create integer.xml in values *
<?xml version="1.0" encoding="utf-8"?>
<resources>
<item type="integer" name="max_length">12</item>
</resources>
2)在布局
<TextView android:id="@+id/tv"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:maxLength="@integer/max_length"
/>
3)在ArrayAdapter:
int maxLength = getResources().getInteger(R.integer.max_length);
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