本文介绍了react-navigation之动态修改title的内容，分享给大家，具体如下：
效果图：
动态修改title内容：
我要评论
static navigationoptions = {
title: ({ state }) => `chat with ${state.params.user}`
};
ps:`chat with ${state.params.user}` 这里有个注意的地方，是这个符号·而不是单引号‘
index.android.js
/**
* sample react native app
* https://github.com/facebook/react-native
* @flow
*/
import {
appregistry,
}from 'react-native';
import rootapp from './js/rootapp'
appregistry.registercomponent('gankproject', () = >rootapp);
rootapp.js:
/**
* created by administrator on 2017/3/31 0031.
*/
'use strict'import react from 'react';
import {
appregistry,
text,
view,
button,
}
from 'react-native';
import {
stacknavigator
}
from 'react-navigation';
import chatscreen from './chatscreen';
class homescreen extends react.component {
static navigationoptions = {
title: 'welcome',
//设置标题内容 };
render() {
const {
navigate
} = this.props.navigation;
return ( < view > <text > hello, navigation ! </text>
<button
onpress={() => navigate('chat',{user:'lucy'})}
title="chat with lucy"/ > </view>
);
}
}
const simpleapp = stacknavigator(
{
home: {screen: homescreen},
chat:{screen:chatscreen},
}
);
export default simpleapp;
chatscreen.js:
/**
* created by administrator on 2017/3/31 0031.
*/
'use strict'
import react,{component}from 'react';
import {view,text}from 'react-native';
class chatscreen extends component {
static navigationoptions = {
title: ({state}) = >`chat with $ {state.params.user}`
};
render() {
const {params} = this.props.navigation.state;
return ( < view > <text > chat with {
params.user
} < /text> </view > );
}
}
export default chatscreen;
效果2：
/** * created by administrator on 2017/3/31 0031. */
'use strict'
import react, { component}from 'react';
import {view, text, button}from 'react-native';
class chatscreen extends component {
static navigationoptions = {
title: ({
state
}) => {
if (state.params.mode === 'info') {
return `${state.params.user}'s contact info`;
}
return `chat with ${state.params.user}`;
},
header: ({state, setparams}) => {
// the navigation prop has functions like setparams, goback, and navigate.
let right = ( < button title = {
`${state.params.user}'s info`
}
onpress = {
() => setparams({
mode: 'info'
})
}
/>
);
if (state.params.mode === 'info') {
right = (
<button
title="done"
onpress={() => setparams({ mode: 'none' })}
/ >
);
}
return {right};
},
};
render() {
const {
params
} = this.props.navigation.state;
return (
< view >
< text > chat with {params.user} < /text>
</view >
);
}
}
export default chatscreen;
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