布局里面使用android:checkedButton="@+id/radio0"
如果生成时把默认值对应的checked设为ture,如果已经生成要改大致这样写form.down("name[value='缺省值']).checked=true
例子:
Ext.create('Ext.form.Panel', {
title: 'RadioGroup Example',
width: 300,
height: 125,
bodyPadding: 10,
renderTo: Ext.getBody(),
items:[{
xtype: 'radiogroup',
fieldLabel: 'Two Columns',
// Arrange radio buttons into two columns, distributed vertically
columns: 2,
vertical: true,
items: [
{ boxLabel: 'Item 1', name: 'rb', inputValue: '1' },
{ boxLabel: 'Item 2', name: 'rb', inputValue: '2', checked: true},
{ boxLabel: 'Item 3', name: 'rb', inputValue: '3' },
{ boxLabel: 'Item 4', name: 'rb', inputValue: '4' },
{ boxLabel: 'Item 5', name: 'rb', inputValue: '5' },
{ boxLabel: 'Item 6', name: 'rb', inputValue: '6' }
]
}]
})
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