Direct manipulation TextInput defaultValue

[gezichenshan]

I was looking for help on the stackOverflow but just get this one which didn't solve my problem:
here

I also want to directly update the value of a component due to performance reasons.
Here is my code,

<TextInput ref="currentAlphabetRefer" editable={false} style={{width:60,fontSize:30,color:'#fff'}} defaultValue='test'/>
this.refs.currentAlphabetRefer.setNativeProps({ defaultValue : 'A'})

However, the defaultValue doesn't get change.

But when I set the style by setNativeProps,

this.refs.currentAlphabetRefer.setNativeProps({ style :{color:'#f00'}})

I could see the fontColor turn red.

Is 'defaultValue' not a prop of TextInput ?

[gezichenshan]

OK,I've seen this question: issue1390,
and resort to this page,which solved my puzzle.