我有一个简单的问题,但寻找了一段时间后,我找不到答案。在一个datepicker,是有可能改变的月份显示为整数的字符串.eg:{1,2,3 ..} {不是一月,二月,三月......}
I have a simple question but after searching a while I couldn't find the answer yet. In a DatePicker, is it possible to change the month to be displayed as an integer not a string?.eg: {1,2,3..} not {jan,feb,mar...}
编辑:
虽然@金田公司的解决方案似乎工作,在安卓3.0最少的方法和属性是不一样的。在code我使用的是这样的:
Although @kaneda's solution seems to work, in android 3.0 at least the methods and attributes are not the same. The code I'm using is this:
public DatePickerCustom(Context context, AttributeSet attrs) {
super(context, attrs);
Field[] fields = DatePicker.class.getDeclaredFields();
try {
for (Field field : fields) {
field.setAccessible(true);
if (TextUtils.equals(field.getName(), "mMonthSpinner")) {
Method m = field.getType().getDeclaredMethod("setDisplayedValues", String[].class);
m.setAccessible(true);
String[] s = new String[] {"01","02","03","04","05","06","07","08","09","10","11","12"};
Object[] params = new Object[1];
params[0] = s;
m.invoke(field.get(this), params);
break;
}
}
}
catch (Exception e) {
System.out.println(e.getMessage());
e.printStackTrace();
}
}
编辑2:
最好的解决办法,就是创建一个自定义的DatePicker(以下@kaneda第一条建议),将始终工作没有兼容性问题,而不是中继的反思。
Best solution, is to create a Custom DatePicker (following @kaneda first advice), will always work without compatibility issues and not relaying on reflection.
使用的从Android和DatePicker.java date_picker.xml 发表@kaneda。另外,我用一个自定义NumberPicker(因为一个DatePicker的部件采用的是内置到Android)。对于NumberPicker部件我跟着这个链接。
Used the date_picker.xml from android and DatePicker.java posted by @kaneda. Also, I used a custom NumberPicker (because the one the DatePicker widget uses is internal to android). For the NumberPicker widget I followed this link.
在CustomDatePicker我评论功能 getShortMonths()
并设置月份范围为 mMonthPicker.setRange(1,NUMBER_OF_MONTHS);
。
In the CustomDatePicker I commented the function getShortMonths()
and set the month range as mMonthPicker.setRange(1, NUMBER_OF_MONTHS);
.
推荐答案
有关所关注的最佳实践,我认为,如果你创建自己的自定义它是最正确的,更容易为你的DatePicker
通过创建自己的布局,所以我建议你先看看它的源$ C $ C仅供参考:
For what concerns best practices I think it's the most correct and easier for you if you create your own custom DatePicker
by creating your own layout, so I suggest you take a look at its source code just for reference:
Android源$ C $ C
或
这里
这就是奇特的方式。丑陋的方式,你可以这样做:
That's the fancy way. The ugly way, you could do this:
Android版本< 3.0
package my.pkg;
...
class MyDatePicker extends DatePicker {
public MyDatePicker(Context context, AttributeSet attrs) {
super(context, attrs);
Field[] fields = DatePicker.class.getDeclaredFields();
try {
for (Field field : fields) {
field.setAccessible(true);
if (TextUtils.equals(field.getName(), "mMonthPicker")) {
Method m = field.getType().getDeclaredMethod("setRange", int.class, int.class, String[].class);
m.setAccessible(true);
String[] s = new String[] {"01","02","03","04","05","06","07","08","09","10","11","12"};
m.invoke(field.get(this), 1, 12, s);
break;
}
}
}
catch (Exception e) {
System.out.println(e.getMessage());
e.printStackTrace();
}
}
}
Android版本> = 3.0(只有构造函数)
public MyDatePicker(Context context, AttributeSet attrs) {
super(context, attrs);
Field[] fields = DatePicker.class.getDeclaredFields();
try {
String[] s = new String[] {"01","02","03","04","05","06","07","08","09","10","11","12"};
for (Field field : fields) {
field.setAccessible(true);
if (TextUtils.equals(field.getName(), "mMonthSpinner")) {
NumberPicker monthPicker = (NumberPicker) field.get(this);
monthPicker.setDisplayedValues(s);
}
if (TextUtils.equals(field.getName(), "mShortMonths")) {
field.set(this, s);
}
}
}
catch (Exception e) {
System.out.println(e.getMessage());
e.printStackTrace();
}
}
随后样本XML:
Then the boilerplate xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<my.pkg.MyDatePicker
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</LinearLayout>
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