我想要的是布局占用屏幕上的所有空间(因此提交按钮应该在底部向下)。我试图使用{flex: 1}
,但它无效。这是代码:
'use strict';
const React = require('react-native');
const {
StyleSheet,
Text,
View,
BackAndroid,
TextInput,
TouchableNativeFeedback,
ScrollView
} = React;
const ActionButton = require('./action-button');
module.exports = React.createClass({
handleBackButtonPress () {
if (this.props.navigator) {
this.props.navigator.pop();
return true;
}
return false;
},
componentWillMount () {
BackAndroid.addEventListener('hardwareBackPress', this.handleBackButtonPress);
},
componentWillUnmount () {
BackAndroid.removeEventListener('hardwareBackPress', this.handleBackButtonPress);
},
onInputFocus (refName) {
setTimeout(() => {
let scrollResponder = this.refs.scrollView.getScrollResponder();
scrollResponder.scrollResponderScrollNativeHandleToKeyboard(
React.findNodeHandle(this.refs[refName]),
0,
true
);
}, 50);
},
render: function() {
return (
<ScrollView ref='scrollView' style={styles.scroller}>
<View style={styles.container}>
<View style={styles.header}>
<Text>New Post</Text>
<View style={styles.actions}>
<ActionButton handler={this.handleBackButtonPress} icon={'fontawesome|close'}
size={15} width={15} height={15} />
</View>
</View>
<View style={styles.content}>
<TextInput underlineColorAndroid={'white'}
placeholder={'Who\'s your professor?'}
ref='professor'
onFocus={this.onInputFocus.bind(this, 'professor')}
style={styles.professor}
/>
<TextInput multiline={true}
underlineColorAndroid={'white'}
placeholder={'What do you think?'}
ref='post'
onFocus={this.onInputFocus.bind(this, 'post')}
style={styles.post}
/>
</View>
<View style={styles.footer}>
<TouchableNativeFeedback
background={TouchableNativeFeedback.SelectableBackground()}>
<View style={{width: 50, height: 25, backgroundColor: 'green'}}>
<Text>Submit</Text>
</View>
</TouchableNativeFeedback>
</View>
</View>
</ScrollView>
);
}
});
const styles = StyleSheet.create({
scroller: {
flex: 1,
flexDirection: 'column'
},
container: {
flex: 1,
flexDirection: 'column',
justifyContent: 'flex-start',
backgroundColor: 'white',
padding: 5,
},
post: {
flex: 3
},
professor: {
flex: 1
},
actions: {
flex: 1,
flexDirection: 'row',
justifyContent: 'flex-end',
alignSelf: 'center'
},
header: {
flex: 1,
padding: 5,
flexDirection: 'row'
},
content: {
flex: 4
},
footer: {
flex: 1
}
});
从我所看到的情况来看,我一直在视图层次结构中设置flex属性,但仍然没有做任何事情(在顶层是一个导航器,{flex:1}为好)。有什么建议吗?
答案 0 :(得分:12)
您想要的是contentContainerStyle
组件的ScrollView
道具。如果你替换:
<ScrollView ref='scrollView' style={styles.scroller}>
with:
<ScrollView ref='scrollView' contentContainerStyle={styles.scroller}>
这将解决您的问题。
如上所述in the doc:
这些样式将应用于滚动视图内容容器,该容器包装所有子视图。
希望它有所帮助!
答案 1 :(得分:1)
如果屏幕截图中的颜色准确,则您的滚动视图已占用所有垂直空间但容器不占用(容器背景颜色为白色)。这说明了scrollviews的工作原理。它们充当容器,其中柔性可以真正使儿童生长以适应垂直空间,因为它可能是无限的。而是将孩子们渲染到自然高度。 http://devdocs.io/react_native/scrollview
尝试使用占据整个屏幕高度的视图。
<View style={styles.container}>
... components here ...
</View>
const styles = StyleSheet.create({
container: {
flex: 1,
flexDirection: 'column',
justifyContent: 'space-between'
}
})
答案 2 :(得分:-1)
您需要为最外层容器设置flexDirection:'row'属性:
scroller: {
flex:1,
flexDirection: 'row'
}
我已经设置了您的应用here的基本版本。其余代码粘贴在下面,以获得完整的工作示例:
https://rnplay.org/apps/gjBqgw
'use strict';
var React = require('react-native');
var {
StyleSheet,
Text,
View,
BackAndroid,
TextInput,
TouchableNativeFeedback,
ScrollView,
AppRegistry,
TouchableHighlight
} = React;
var SampleApp = React.createClass({
render: function() {
return (
<ScrollView ref='scrollView' style={styles.scroller}>
<View style={styles.container}>
<View style={styles.header}>
<Text>New Post</Text>
<View style={styles.actions}>
<TouchableHighlight handler={this.handleBackButtonPress} icon={'fontawesome|close'}
size={15} width={15} height={15}>
<Text>Button Text</Text>
</TouchableHighlight>
</View>
</View>
<View style={styles.content}>
<Text>Hello from content</Text>
</View>
<View style={styles.footer}>
<TouchableHighlight>
<View style={{width: 50, height: 25, backgroundColor: 'green'}}>
<Text>Submit</Text>
</View>
</TouchableHighlight>
</View>
</View>
</ScrollView>
);
}
});
const styles = StyleSheet.create({
scroller: {
flex:1,
flexDirection: 'row'
},
container: {
flex: 1,
backgroundColor: 'white',
padding: 5,
},
post: {
flex: 3
},
professor: {
flex: 1
},
actions: {
flex: 1,
flexDirection: 'row',
alignSelf: 'center'
},
header: {
flex: 1,
padding: 5,
flexDirection: 'row'
},
content: {
flex: 4
},
footer: {
flex: 1,
}
});
AppRegistry.registerComponent('SampleApp', () => SampleApp);