I'm trying to create a form with a reset button in order to clear all fields, I'm building a Class Component I don't like the idea of using setState in each field, do you know any better way to clear this form?
simplified code example:
class Registration extends React.Component {
constructor(){
super();
this.state= {}
}
render() {
return (
<View >
<View >
<TouchableOpacity
style={{ styles.button }}
onPress={ } >
<Text style={{ style.text }} >RESET</Text>
</TouchableOpacity>
</View>
<ScrollView>
<View >
<TextInput
ref={this.textInput}
style={{ styles.input }}
placeholder='Name'
onChangeText={(text) => { }}
/>
</View>
<View >
<TextInput
style={{ styles.input}}
onChangeText={(text) => { }}
placeholder='Username'
/>
</View>
<View >
<TextInput
style={{ styles.input}}
onChangeText={(text) => { }}
placeholder='password'
/>
</View>
<View >
<TextInput
style={{ styles.input}}
onChangeText={(text) => { }}
placeholder='email'
/>
</View>
.
.
.
</ScrollView>
</View>
);
}
}
Related
I have the following and i have all the imports added. Please see below code (apologies as a bit of a newbie)
return (
<View style={styles.container}>
<KeyboardAwareScrollView
style={{ flex: 1, width: '100%' }}
keyboardShouldPersistTaps="always">
<Image
style={styles.logo}
source={require('../../../assets/logo.png')}
/>
<TextInput
style={styles.input}
placeholder='E-mail'
placeholderTextColor="#CBB26A"
onChangeText={(text) => setEmail(text)}
value={email}
underlineColorAndroid="transparent"
autoCapitalize="none"
/>
<TextInput
style={styles.input}
placeholderTextColor="#CBB26A"
secureTextEntry
placeholder='Password'
onChangeText={(text) => setPassword(text)}
value={password}
underlineColorAndroid="transparent"
autoCapitalize="none"
/>
<TouchableOpacity
style={styles.button}
onPress={() => onLoginPress()}>
<Text style={styles.buttonTitle}>Log in</Text>
</TouchableOpacity>
<View style={styles.footerView}>
<Text style={styles.footerText}>Don't have an account? <Text onPress={onFooterLinkPress} style={styles.footerLink}>Sign up</Text></Text>
</View>
</KeyboardAwareScrollView>
</View>
)
}
I want to add a background image to cover everything but still make everything work as normal (so it all sits on top of the image). i cant wrap them with imageBackground because of objects. Any ideas how i can achieve this?
You can create your style and then merge your style with the styles.container.
const wrapperStyle = {
...styles.container,
background: // your code here
}
Then use this wrapperStyle into your View as
<View style={wrapperStyle}>
In my component, I was rendering a button for each Item. It was working. However, when I wrap all of it in a touchable TouchableOpacity, the button no longer works. Everything is the touchable opacity now. How can I still use the button?
return (
<TouchableOpacity onPress= {()=> console.log('Hello')}>
<View style={styles.item} key={item.id}>
<Thumbnail
style={styles.thumbnail}
source={{
uri:
'https://cdn4.iconfinder.com/data/icons/avatars-xmas-giveaway/128/afro_woman_female_person-512.png',
}}></Thumbnail>
<View style={styles.nameNumber}>
<Text style={styles.userName}>{userName}</Text>
</View>
<View style={styles.deleteButtonContainer}>
<Button
rounded
style={styles.deleteButton}
onPress={() => onDeleteContact(item.id)}
>
<Icon name="trash-o" size={moderateScale(20)} color="black" />
</Button>
</View>
</View>
</TouchableOpacity>
);
},
Change like this? (Wrap the tag except the button?)
return (
<View style={styles.item} key={item.id}>
<TouchableOpacity onPress= {()=> console.log('Hello')}>
<Thumbnail
style={styles.thumbnail}
source={{
uri:
'https://cdn4.iconfinder.com/data/icons/avatars-xmas-giveaway/128/afro_woman_female_person-512.png',
}}></Thumbnail>
<View style={styles.nameNumber}>
<Text style={styles.userName}>{userName}</Text>
</View>
</TouchableOpacity>
<View style={styles.deleteButtonContainer}>
<Button
rounded
style={styles.deleteButton}
onPress={() => onDeleteContact(item.id)}
>
<Icon name="trash-o" size={moderateScale(20)} color="black" />
</Button>
</View>
</View>
);
},
How can i create a button/TouchableOpacity that change the background color of style={styles.view} ?
<View style={styles.view}>
{user &&
<>
<TouchableOpacity onPress={carregaUsuarioAnonimo}>
<Image
style={styles.avatar}
source={{ uri: user.picture }} />
</TouchableOpacity>
<Text style={styles.nome_usuario}>{user.name}</Text>
</>
}
<ScrollView style={styles.scrollview} ref={(view) => { setScrollview(view) }}>
{
mensagens.length > 0 && mensagens.map(item => (
<View key={item.id} style={styles.linha_conversa}>
<Image style={styles.avatar_conversa} source={{ uri: item.avatar }} />
<View style={{ flexDirection: 'column', marginTop: 5 }}>
<Text style={{ fontSize: 12, color: '#999' }}>{item.usuario}</Text>
{typeof (item.mensagem) == "string" ?
<Text>{item.mensagem}</Text>
:
<Text> </Text>
}
</View>
</View>
))
}
</ScrollView>
<View style={styles.footer}>
<TextInput
style={styles.input_mensagem}
onChangeText={text => setCaixaTexto(text)}
value={caixaTexto} />
<TouchableOpacity onPress={salvar}>
<Ionicons style={{ margin: 3 }} name="md-send" size={32} color={'#999'} />
</TouchableOpacity>
</View>
</View>)
you can make a condition inside the style, like that:
create a boolean inside your state and change it value to true when the button is clicked.
Inside your Touchable, drop the condition.
style={
this.state.buttonCliked ? styles.backgroundBlue :
styles.backgroundGreen
}
I hope it helps you.
This is an example:-
state={isClicked:false}
checkToChangeStyle=()=>{
this.setState({isClicked:!this.state.isClicked})
}
return(
<TouchableOpacity onPress={this.checkToChangeStyle}
style={this.state.isClicked ? styles.backGround1 : styles.backGround2}>
<Text>Your Button</Text>
</TouchableOpacity>
)
const styles=StylesSheet.create({
backGround1:{backgroundColor:'green'},
backGround2:{backgroundColor:'red'},
})
There are 3 check boxes and I have to make one check box mandatory . Like if all checkbox are un checked then button should be disabled . Please help me for that . How I can do .
<View style={{ flexDirection: 'row', paddingLeft: 15 }}>
<View style={{ flex: 1 }}>
<CheckBox color="#00678f"
checked={this.state.notification.isContactByPost}
onPress={() => this.handleChange('isContactByPost')}
/>
</View>
<View style={{ flex: 1 }}>
<Text style={{ fontSize: 14 }}>Post</Text>
</View>
<View style={{ flex: 1 }}>
<CheckBox color="#00678f"
checked={this.state.notification.isContactByEmail}
onPress={() => this.handleChange('isContactByEmail')}
/>
</View>
<View style={{ flex: 1 }}>
<Text style={{ fontSize: 14 }}>Email</Text>
</View>
<View style={{ flex: 1 }}>
<CheckBox color="#00678f"
checked={this.state.notification.isContactBySms}
onPress={() => this.handleChange('isContactBySms')}
/>
</View>
<View style={{ flex: 1 }}>
<Text style={{ fontSize: 14 }}>SMS</Text>
</View>
</View>
<View style={{ marginTop: 50 }}>
<PrimaryBtn
label={'submit'}
disabled={false}
onPress={() => this.OnButtonClick(this.state.notification)}
/>
</View>
</View>
Thanks
This is how you can do it
<PrimaryBtn label={'submit'} disabled={!this.state.notification.isContactByPost &&
!this.state.notification.isContactByEmail &&
!this.state.notification.isContactBySms} onPress={() =>
this.OnButtonClick(this.state.notification)} />
Hope this helps
Try this (to make it more simple i removed redundant parts) =>
const {isContactByPost, isContactByEmail, isContactBySms} = this.state.notification
const isButtonDisabled = !(isContactByPost || isContactByEmail || isContactBySms)
<PrimaryBtn disabled={isButtonDisabled} /> // don't forget your others props :)
render(){
const {isContactByPost,isContactByEmail,isContactBySms } = this.state.notification;
return (
<PrimaryBtn
label={'submit'}
disabled={!(isContactByPost || isContactByEmail || isContactBySms)}
onPress={() => this.OnButtonClick(this.state.notification)}
/>
);
}
I am trying to write a very simple app to test react native.
I have some TextInput components in a big ScrollView, as a register formulary.
Everything works fine, but when I scroll clicking on a TextInput, it doesn't scroll.
I can only scroll through the page when I click in blank spaces. Any idea of how to do it?
Thanks.
<ScrollView>
<TextInput onChangeText={email => this.setState({email})} label={ I18n.t("contactEmail") }/>
<TextInput onChangeText={email => this.setState({email})} label={ I18n.t("contactEmail") }/>
<TextInput onChangeText={email => this.setState({email})} label={ I18n.t("contactEmail") }/>
<TextInput onChangeText={email => this.setState({email})} label={ I18n.t("contactEmail") }/>
</ScrollView>
I had the same problem and after searching for a while no answer helped me; so I solved it myself by putting a <TouchableWithoutFeedback /> over each <TextInput> and sending the touch event back to the <TextInput />:
<View>
<TextInput ref ={(ref)=>this.textInput = ref}>
<TouchableWithoutFeedback style={{position: 'absolute', top:0, bottom:0, left:0, right:0}}
onPress={()=>this.textInput.focus()}/>
</View>
You can create a custom component which wraps TextInput like that and use them in your ScrollViews.
I had solve the problem like this:
<TouchableOpacity
activeOpacity={1}
style={{ flex: 1 }}
onPress={() => this.textInput.focus()} >
<View
style={{ flex: 1 }}
pointerEvents="none" >
<TextInput
ref={(ref) => this.textInput = ref}
style={{ fontSize: 14, color: '#666666', textAlign: 'right', flex: 1 }}
placeholder={this.props.placeHolder}
defaultValue={this.props.defaultValue ? this.props.defaultValue + '' : ''}
placeholderTextColor='#aaaaaa'
keyboardType={this.props.keyboardType ? this.props.keyboardType : 'default'}
secureTextEntry={this.props.isSecret}
onChangeText={this._onChangeText.bind(this)} />
</View>
</TouchableOpacity>