本文介绍了如何在Android中的NumberPicker中自定义数字的值?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个数字选择器,用于设置以MB为单位的数据限制.现在,我有numberPicker,它包含按顺序排列的数字值,例如[1,2,3,.....,2000 MB].
I have a number picker for setting a data limit in MB. right now, I have numberPicker, contains numeric values in sequence like [1,2,3,....., 2000 MB].
但是我想要一个数字选择器,其中应该包含[100,200,300,....,2000MB]之类的数值.我该怎么办?
But I want a numberPicker that should contain numeric values like [100,200,300,...., 2000MB].How can I do this?
推荐答案
为选择器显示的数组值
int NUMBER_OF_VALUES = 20; //num of values in the picker
int PICKER_RANGE = 100;
...
String[] displayedValues = new String[NUMBER_OF_VALUES];
//Populate the array
for(int i=0; i<NUMBER_OF_VALUES; i++)
displayedValues[i] = String.valueOf(PICKER_RANGE * (i+1));
/* OR: if the array is easy to be hard-coded, then just hard-code it:
String[] displayedValues = {"100", "200", "300", .....}; */
在选择器中设置arr:
Set arr in your picker :
numPicker.setMinValue(0);
numPicker.setMaxValue(displayedValues.size()-1);
numPicker.setDisplayedValues(displayedValues);
获取/设置选择器的值:
get/set the value of the picker :
//To get the current value in the picker
choosenValue = displayedValues[numPicker.getValue()];
//To set a new value (let's say 150)
for( int i=0; i<displayedValues.length ; i++ )
if( displayedValues[i].equals("300") )
numPicker.setValue(i);
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