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I want to custom a screen same:
so I use Flastlist and check if the item is header I will set with item = window.with and if not width item = window.width/3. But its error. Here is my code:
const { width, height } = Dimensions.get("window")
class App extends React.Component {
constructor() {
super()
this.state = {
data: [
{ name: "Movies", header: true },
{ name: "Interstellar", header: false },
{ name: "Dark Knight", header: false },
{ name: "Pop", header: false },
{ name: "Music", header: true },
{ name: "Adams", header: false },
{ name: "Nirvana", header: false },
{ name: "Amrit Maan", header: false },
{ name: "Oye Hoye", header: false },
{ name: "Eminem", header: false },
{ name: "Places", header: true },
{ name: "Jordan", header: false },
{ name: "Punjab", header: false },
{ name: "Ludhiana", header: false },
{ name: "Jamshedpur", header: false },
{ name: "India", header: false },
{ name: "People", header: true },
{ name: "Jazzy", header: false },
{ name: "Appie", header: false },
{ name: "Baby", header: false },
{ name: "Sunil", header: false },
{ name: "Arrow", header: false },
{ name: "Things", header: true },
{ name: "table", header: false },
{ name: "chair", header: false },
{ name: "fan", header: false },
{ name: "cup", header: false },
{ name: "cube", header: false }
],
stickyHeaderIndices: []
};
}
renderItem(item) {
if (item.header) {
return (
<View style={{ width: width, height: 40, backgroundColor: 'green' }}>
<Text>{item.name}</Text>
</View>
)
} else {
return (
<View style={{
width: width / 3,
height: width / 3,
backgroundColor: 'white',
borderWidth: 1,
borderColor: 'gray'
}}>
<Text>{item.name}</Text>
</View>
)
}
}
render() {
return (
<View style={{ flex: 1, backgroundColor: 'red' }}>
<FlatList
data={this.state.data}
renderItem={({ item }) => (
this.renderItem(item)
)}
keyExtractor={item => item.name}
/>
</View>
);
}
}
export default App;I want to custom a screen same:
so I use Flastlist and check if the item is header I will set with item = window.with and if not width item = window.width/3. But its error. Here is my code:
const { width, height } = Dimensions.get("window")
class App extends React.Component {
constructor() {
super()
this.state = {
data: [
{ name: "Movies", header: true },
{ name: "Interstellar", header: false },
{ name: "Dark Knight", header: false },
{ name: "Pop", header: false },
{ name: "Music", header: true },
{ name: "Adams", header: false },
{ name: "Nirvana", header: false },
{ name: "Amrit Maan", header: false },
{ name: "Oye Hoye", header: false },
{ name: "Eminem", header: false },
{ name: "Places", header: true },
{ name: "Jordan", header: false },
{ name: "Punjab", header: false },
{ name: "Ludhiana", header: false },
{ name: "Jamshedpur", header: false },
{ name: "India", header: false },
{ name: "People", header: true },
{ name: "Jazzy", header: false },
{ name: "Appie", header: false },
{ name: "Baby", header: false },
{ name: "Sunil", header: false },
{ name: "Arrow", header: false },
{ name: "Things", header: true },
{ name: "table", header: false },
{ name: "chair", header: false },
{ name: "fan", header: false },
{ name: "cup", header: false },
{ name: "cube", header: false }
],
stickyHeaderIndices: []
};
}
renderItem(item) {
if (item.header) {
return (
<View style={{ width: width, height: 40, backgroundColor: 'green' }}>
<Text>{item.name}</Text>
</View>
)
} else {
return (
<View style={{
width: width / 3,
height: width / 3,
backgroundColor: 'white',
borderWidth: 1,
borderColor: 'gray'
}}>
<Text>{item.name}</Text>
</View>
)
}
}
render() {
return (
<View style={{ flex: 1, backgroundColor: 'red' }}>
<FlatList
data={this.state.data}
renderItem={({ item }) => (
this.renderItem(item)
)}
keyExtractor={item => item.name}
/>
</View>
);
}
}
export default App;and my result I have the error: an item isn't header is a row, but I want to show 3 item in a row.
When added number column = 3 in flastlist with code :
<FlatList
numColumns={3}
data={this.state.data}
renderItem={({ item }) => (this.renderItem(item))}
keyExtractor={item => item.name}
/>How can I fix show 3 item in a row? Thank you very much.
Share Improve this question edited Apr 4, 2018 at 5:30 Trần Hòa asked Apr 4, 2018 at 4:36 Trần Hòa Trần Hòa 2354 silver badges15 bronze badges3 Answers
Reset to default 1I think you forgot to add numColumns = { 3 } in Flatlist props. Here you get detail solution to your problem.
I've used nested FlatList to solve this:
const renderCategory = category => (
<View>
<Text>{category}</Text>
<FlatList
data={itemsByCategory[category]}
renderItem={({item, index}) => renderItem(item)}
keyExtractor={(item, index) => index.toString()}
numColumns={3}
/>
</View>
);
return (
<FlatList
data={Object.keys(itemsByCategory)}
renderItem={({item, index}) => renderCategory(item)}
keyExtractor={(item, index) => index.toString()}
/>
);
Using flexWrap: 'wrap' and flexDirection: 'row' in your main container should resolve your problem.
<View style={{ flex: 1, backgroundColor: 'red', flexWrap: 'wrap', flexDirection: 'row' }}>
<FlatList
data={this.state.data}
renderItem={({ item }) => (
this.renderItem(item)
)}
keyExtractor={item => item.name}
/>
</View>
I want to custom a screen same:
so I use Flastlist and check if the item is header I will set with item = window.with and if not width item = window.width/3. But its error. Here is my code:
const { width, height } = Dimensions.get("window")
class App extends React.Component {
constructor() {
super()
this.state = {
data: [
{ name: "Movies", header: true },
{ name: "Interstellar", header: false },
{ name: "Dark Knight", header: false },
{ name: "Pop", header: false },
{ name: "Music", header: true },
{ name: "Adams", header: false },
{ name: "Nirvana", header: false },
{ name: "Amrit Maan", header: false },
{ name: "Oye Hoye", header: false },
{ name: "Eminem", header: false },
{ name: "Places", header: true },
{ name: "Jordan", header: false },
{ name: "Punjab", header: false },
{ name: "Ludhiana", header: false },
{ name: "Jamshedpur", header: false },
{ name: "India", header: false },
{ name: "People", header: true },
{ name: "Jazzy", header: false },
{ name: "Appie", header: false },
{ name: "Baby", header: false },
{ name: "Sunil", header: false },
{ name: "Arrow", header: false },
{ name: "Things", header: true },
{ name: "table", header: false },
{ name: "chair", header: false },
{ name: "fan", header: false },
{ name: "cup", header: false },
{ name: "cube", header: false }
],
stickyHeaderIndices: []
};
}
renderItem(item) {
if (item.header) {
return (
<View style={{ width: width, height: 40, backgroundColor: 'green' }}>
<Text>{item.name}</Text>
</View>
)
} else {
return (
<View style={{
width: width / 3,
height: width / 3,
backgroundColor: 'white',
borderWidth: 1,
borderColor: 'gray'
}}>
<Text>{item.name}</Text>
</View>
)
}
}
render() {
return (
<View style={{ flex: 1, backgroundColor: 'red' }}>
<FlatList
data={this.state.data}
renderItem={({ item }) => (
this.renderItem(item)
)}
keyExtractor={item => item.name}
/>
</View>
);
}
}
export default App;I want to custom a screen same:
so I use Flastlist and check if the item is header I will set with item = window.with and if not width item = window.width/3. But its error. Here is my code:
const { width, height } = Dimensions.get("window")
class App extends React.Component {
constructor() {
super()
this.state = {
data: [
{ name: "Movies", header: true },
{ name: "Interstellar", header: false },
{ name: "Dark Knight", header: false },
{ name: "Pop", header: false },
{ name: "Music", header: true },
{ name: "Adams", header: false },
{ name: "Nirvana", header: false },
{ name: "Amrit Maan", header: false },
{ name: "Oye Hoye", header: false },
{ name: "Eminem", header: false },
{ name: "Places", header: true },
{ name: "Jordan", header: false },
{ name: "Punjab", header: false },
{ name: "Ludhiana", header: false },
{ name: "Jamshedpur", header: false },
{ name: "India", header: false },
{ name: "People", header: true },
{ name: "Jazzy", header: false },
{ name: "Appie", header: false },
{ name: "Baby", header: false },
{ name: "Sunil", header: false },
{ name: "Arrow", header: false },
{ name: "Things", header: true },
{ name: "table", header: false },
{ name: "chair", header: false },
{ name: "fan", header: false },
{ name: "cup", header: false },
{ name: "cube", header: false }
],
stickyHeaderIndices: []
};
}
renderItem(item) {
if (item.header) {
return (
<View style={{ width: width, height: 40, backgroundColor: 'green' }}>
<Text>{item.name}</Text>
</View>
)
} else {
return (
<View style={{
width: width / 3,
height: width / 3,
backgroundColor: 'white',
borderWidth: 1,
borderColor: 'gray'
}}>
<Text>{item.name}</Text>
</View>
)
}
}
render() {
return (
<View style={{ flex: 1, backgroundColor: 'red' }}>
<FlatList
data={this.state.data}
renderItem={({ item }) => (
this.renderItem(item)
)}
keyExtractor={item => item.name}
/>
</View>
);
}
}
export default App;and my result I have the error: an item isn't header is a row, but I want to show 3 item in a row.
When added number column = 3 in flastlist with code :
<FlatList
numColumns={3}
data={this.state.data}
renderItem={({ item }) => (this.renderItem(item))}
keyExtractor={item => item.name}
/>How can I fix show 3 item in a row? Thank you very much.
Share Improve this question edited Apr 4, 2018 at 5:30 Trần Hòa asked Apr 4, 2018 at 4:36 Trần Hòa Trần Hòa 2354 silver badges15 bronze badges3 Answers
Reset to default 1I think you forgot to add numColumns = { 3 } in Flatlist props. Here you get detail solution to your problem.
I've used nested FlatList to solve this:
const renderCategory = category => (
<View>
<Text>{category}</Text>
<FlatList
data={itemsByCategory[category]}
renderItem={({item, index}) => renderItem(item)}
keyExtractor={(item, index) => index.toString()}
numColumns={3}
/>
</View>
);
return (
<FlatList
data={Object.keys(itemsByCategory)}
renderItem={({item, index}) => renderCategory(item)}
keyExtractor={(item, index) => index.toString()}
/>
);
Using flexWrap: 'wrap' and flexDirection: 'row' in your main container should resolve your problem.
<View style={{ flex: 1, backgroundColor: 'red', flexWrap: 'wrap', flexDirection: 'row' }}>
<FlatList
data={this.state.data}
renderItem={({ item }) => (
this.renderItem(item)
)}
keyExtractor={item => item.name}
/>
</View>
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