Have to onPress twice to increase this.state.count - React Native
up vote
1
down vote
favorite
first question ever!
I have the file on Expo - https://snack.expo.io/@pssoor/Y3JhYm
The problem I have is that if you answer a multiplication question correctly, I have to press it again before the accumulator works. Everything else is functioning OK.
The idea behind the code is to select a number from a modal, which makes an array of numbers up to that particular number. The array is then shuffled. A question is made ( ? * accumulator = total) which the user answers.
Hope someone can help!
Thanks
Here's the whole snack (apologies for the mess!)
const arr =
export default class NumberBonds extends React.Component {
constructor() {
super()
this.state = {
accumulator: '',
count: 0,
number: '',
total: '',
}
}
// Modal Functions
setModalVisible(visible) {
this.setState({ modalVisible: !visible })
}
renderArray(val) {
for (let i = 1; i <= val; i++) { arr.push(i) } let i = 0; let j = 0; let temp = null; for (i = arr.length - 1; i > 0; i -= 1) { j = Math.floor(Math.random() * (i + 1)); temp = arr[i]; arr[i] = arr[j]; arr[j] = temp; }
this.setModalVisible(!this.state.modalVisible)
this.setState({
accumulator: arr[this.state.count],
})
return arr
}
modalPassValue(value) {
this.setState({
total: this.state.total + value
})
}
// Main Functions
customAlertCorrect() {
Alert.alert(
'Correct',
'Well Done!',
[
{
text: 'Next',
onPress: () => {this.setState(prevState => ({count: prevState.count + 1}))}
}]
)
}
customAlertDone() {
Alert.alert('Fantastic', 'All Done!')
}
customAlertWrong() {
Alert.alert('Not Quite', 'Try Again!')
}
check() {
// If numbers matching, say correct. Move on. If not matching, say incorrect. Move on. If matching and then no more, STOP
if (parseInt(this.state.number) + this.state.accumulator === parseInt(this.state.total)) {
this.setState( {
number: '',
accumulator: arr[this.state.count]
})
this.customAlertCorrect()
} else {
this.customAlertWrong()
this.setState({
number: '',
})
}
if (parseInt(this.state.count) === parseInt(this.state.total)) {
this.customAlertDone()
}
}
render() {
return (
<View style={styles.container}>
<View style={{ marginTop: 100, marginLeft: 100 }}>
<Modal animationType="slide" transparent={false} visible={this.state.modalVisible}>
<View>
<View style={{ marginTop: 50, }}>
<Text style={{ fontSize: 50, fontFamily: 'hobostd', }}>Enter your Number Bond</Text>
<Text style={{ fontSize: 50, backgroundColor: 'pink', height: 200, color: 'white' }}>{this.state.total}</Text>
</View>
</View>
<View style={{ flex: 1, backgroundColor: 'white', flexDirection: 'row', flexWrap: 'wrap', justifyContent: 'center', alignItems: 'center' }}>
<View style={{ backgroundColor: 'white', flexDirection: 'row', flexWrap: 'wrap', justifyContent: 'flex-start' }}>
<TouchableOpacity onPress={() => this.modalPassValue(1)} style={styles.buttons}><Text style={styles.buttonsText}>1</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(2)} style={styles.buttons}><Text style={styles.buttonsText}>2</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(3)} style={styles.buttons}><Text style={styles.buttonsText}>3</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(4)} style={styles.buttons}><Text style={styles.buttonsText}>4</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(5)} style={styles.buttons}><Text style={styles.buttonsText}>5</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(6)} style={styles.buttons}><Text style={styles.buttonsText}>6</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(7)} style={styles.buttons}><Text style={styles.buttonsText}>7</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(8)} style={styles.buttons}><Text style={styles.buttonsText}>8</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(9)} style={styles.buttons}><Text style={styles.buttonsText}>9</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ total: '' })} style={styles.buttons}><Text style={styles.buttonsText}>Del</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(0)} style={styles.buttons}><Text style={styles.buttonsText}>0</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.renderArray(this.state.total)} style={styles.buttons}><Text style={styles.buttonsText}>Done</Text></TouchableOpacity>
</View>
</View>
</Modal>
</View>
<View style={{ marginBottom: 20 }}><Text style={{ fontSize: 50, textAlign: 'center' }}>Accumulator: {this.state.accumulator}</Text></View>
<View style={{ marginBottom: 20, flexDirection: 'row', justifyContent: 'space-around' }}>
<View style={{ backgroundColor: 'red', height: 70, width: 100, borderRadius: 20, }}><Text style={{ fontSize: 50, textAlign: 'center', }}>{this.state.accumulator}</Text></View>
<Text style={{ fontSize: 50, textAlign: 'center', height: 50, width: 40, }}>+</Text>
<View style={{ backgroundColor: 'yellow', height: 70, width: 100, borderRadius: 20, }}><Text style={{ fontSize: 50, textAlign: 'center', }}>{this.state.number}</Text></View>
<Text style={{ fontSize: 50, textAlign: 'center', height: 50, width: 40, }}>=</Text>
<View style={{ backgroundColor: 'orange', height: 70, width: 100, borderRadius: 20, }}><Text style={{ fontSize: 50, textAlign: 'center', }}>{this.state.total}</Text></View>
</View>
<View style={{ flex: 1, backgroundColor: 'white', flexDirection: 'row', flexWrap: 'wrap', justifyContent: 'center', alignItems: 'center' }}>
<View style={{ backgroundColor: 'white', flexDirection: 'row', flexWrap: 'wrap', justifyContent: 'center' }}>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 1 })} style={styles.buttons}><Text style={styles.buttonsText}>1</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 2 })} style={styles.buttons}><Text style={styles.buttonsText}>2</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 3 })} style={styles.buttons}><Text style={styles.buttonsText}>3</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 4 })} style={styles.buttons}><Text style={styles.buttonsText}>4</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 5 })} style={styles.buttons}><Text style={styles.buttonsText}>5</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 6 })} style={styles.buttons}><Text style={styles.buttonsText}>6</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 7 })} style={styles.buttons}><Text style={styles.buttonsText}>7</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 8 })} style={styles.buttons}><Text style={styles.buttonsText}>8</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 9 })} style={styles.buttons}><Text style={styles.buttonsText}>9</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: '' })} style={styles.buttons}><Text style={styles.buttonsText}>Del</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 0 })} style={styles.buttons}><Text style={styles.buttonsText}>0</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.check()} style={styles.buttons}><Text style={styles.buttonsText}>Check</Text></TouchableOpacity>
</View>
</View>
</View>
);
}
}
reactjs react-native
edited Nov 9 at 18:02
Prasun
2,3542814
asked Nov 9 at 17:48
Pav Soor
61
add a comment |
up vote
1
down vote
favorite
first question ever!
I have the file on Expo - https://snack.expo.io/@pssoor/Y3JhYm
The problem I have is that if you answer a multiplication question correctly, I have to press it again before the accumulator works. Everything else is functioning OK.
The idea behind the code is to select a number from a modal, which makes an array of numbers up to that particular number. The array is then shuffled. A question is made ( ? * accumulator = total) which the user answers.
Hope someone can help!
Thanks
Here's the whole snack (apologies for the mess!)
const arr =
export default class NumberBonds extends React.Component {
constructor() {
super()
this.state = {
accumulator: '',
count: 0,
number: '',
total: '',
}
}
// Modal Functions
setModalVisible(visible) {
this.setState({ modalVisible: !visible })
}
renderArray(val) {
for (let i = 1; i <= val; i++) { arr.push(i) } let i = 0; let j = 0; let temp = null; for (i = arr.length - 1; i > 0; i -= 1) { j = Math.floor(Math.random() * (i + 1)); temp = arr[i]; arr[i] = arr[j]; arr[j] = temp; }
this.setModalVisible(!this.state.modalVisible)
this.setState({
accumulator: arr[this.state.count],
})
return arr
}
modalPassValue(value) {
this.setState({
total: this.state.total + value
})
}
// Main Functions
customAlertCorrect() {
Alert.alert(
'Correct',
'Well Done!',
[
{
text: 'Next',
onPress: () => {this.setState(prevState => ({count: prevState.count + 1}))}
}]
)
}
customAlertDone() {
Alert.alert('Fantastic', 'All Done!')
}
customAlertWrong() {
Alert.alert('Not Quite', 'Try Again!')
}
check() {
// If numbers matching, say correct. Move on. If not matching, say incorrect. Move on. If matching and then no more, STOP
if (parseInt(this.state.number) + this.state.accumulator === parseInt(this.state.total)) {
this.setState( {
number: '',
accumulator: arr[this.state.count]
})
this.customAlertCorrect()
} else {
this.customAlertWrong()
this.setState({
number: '',
})
}
if (parseInt(this.state.count) === parseInt(this.state.total)) {
this.customAlertDone()
}
}
render() {
return (
<View style={styles.container}>
<View style={{ marginTop: 100, marginLeft: 100 }}>
<Modal animationType="slide" transparent={false} visible={this.state.modalVisible}>
<View>
<View style={{ marginTop: 50, }}>
<Text style={{ fontSize: 50, fontFamily: 'hobostd', }}>Enter your Number Bond</Text>
<Text style={{ fontSize: 50, backgroundColor: 'pink', height: 200, color: 'white' }}>{this.state.total}</Text>
</View>
</View>
<View style={{ flex: 1, backgroundColor: 'white', flexDirection: 'row', flexWrap: 'wrap', justifyContent: 'center', alignItems: 'center' }}>
<View style={{ backgroundColor: 'white', flexDirection: 'row', flexWrap: 'wrap', justifyContent: 'flex-start' }}>
<TouchableOpacity onPress={() => this.modalPassValue(1)} style={styles.buttons}><Text style={styles.buttonsText}>1</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(2)} style={styles.buttons}><Text style={styles.buttonsText}>2</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(3)} style={styles.buttons}><Text style={styles.buttonsText}>3</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(4)} style={styles.buttons}><Text style={styles.buttonsText}>4</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(5)} style={styles.buttons}><Text style={styles.buttonsText}>5</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(6)} style={styles.buttons}><Text style={styles.buttonsText}>6</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(7)} style={styles.buttons}><Text style={styles.buttonsText}>7</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(8)} style={styles.buttons}><Text style={styles.buttonsText}>8</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(9)} style={styles.buttons}><Text style={styles.buttonsText}>9</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ total: '' })} style={styles.buttons}><Text style={styles.buttonsText}>Del</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(0)} style={styles.buttons}><Text style={styles.buttonsText}>0</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.renderArray(this.state.total)} style={styles.buttons}><Text style={styles.buttonsText}>Done</Text></TouchableOpacity>
</View>
</View>
</Modal>
</View>
<View style={{ marginBottom: 20 }}><Text style={{ fontSize: 50, textAlign: 'center' }}>Accumulator: {this.state.accumulator}</Text></View>
<View style={{ marginBottom: 20, flexDirection: 'row', justifyContent: 'space-around' }}>
<View style={{ backgroundColor: 'red', height: 70, width: 100, borderRadius: 20, }}><Text style={{ fontSize: 50, textAlign: 'center', }}>{this.state.accumulator}</Text></View>
<Text style={{ fontSize: 50, textAlign: 'center', height: 50, width: 40, }}>+</Text>
<View style={{ backgroundColor: 'yellow', height: 70, width: 100, borderRadius: 20, }}><Text style={{ fontSize: 50, textAlign: 'center', }}>{this.state.number}</Text></View>
<Text style={{ fontSize: 50, textAlign: 'center', height: 50, width: 40, }}>=</Text>
<View style={{ backgroundColor: 'orange', height: 70, width: 100, borderRadius: 20, }}><Text style={{ fontSize: 50, textAlign: 'center', }}>{this.state.total}</Text></View>
</View>
<View style={{ flex: 1, backgroundColor: 'white', flexDirection: 'row', flexWrap: 'wrap', justifyContent: 'center', alignItems: 'center' }}>
<View style={{ backgroundColor: 'white', flexDirection: 'row', flexWrap: 'wrap', justifyContent: 'center' }}>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 1 })} style={styles.buttons}><Text style={styles.buttonsText}>1</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 2 })} style={styles.buttons}><Text style={styles.buttonsText}>2</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 3 })} style={styles.buttons}><Text style={styles.buttonsText}>3</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 4 })} style={styles.buttons}><Text style={styles.buttonsText}>4</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 5 })} style={styles.buttons}><Text style={styles.buttonsText}>5</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 6 })} style={styles.buttons}><Text style={styles.buttonsText}>6</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 7 })} style={styles.buttons}><Text style={styles.buttonsText}>7</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 8 })} style={styles.buttons}><Text style={styles.buttonsText}>8</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 9 })} style={styles.buttons}><Text style={styles.buttonsText}>9</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: '' })} style={styles.buttons}><Text style={styles.buttonsText}>Del</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 0 })} style={styles.buttons}><Text style={styles.buttonsText}>0</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.check()} style={styles.buttons}><Text style={styles.buttonsText}>Check</Text></TouchableOpacity>
</View>
</View>
</View>
);
}
}
reactjs react-native
edited Nov 9 at 18:02
Prasun
2,3542814
asked Nov 9 at 17:48
Pav Soor
61
Just to mention, I couldn't fix it using the setState (or updater) methods. I concluded that the issue is the asynchronous nature of state. Installed mobx and it worked right away! Problem solved!
– Pav Soor
Nov 12 at 10:37
add a comment |
up vote
1
down vote
favorite
up vote
1
down vote
favorite
first question ever!
I have the file on Expo - https://snack.expo.io/@pssoor/Y3JhYm
The problem I have is that if you answer a multiplication question correctly, I have to press it again before the accumulator works. Everything else is functioning OK.
The idea behind the code is to select a number from a modal, which makes an array of numbers up to that particular number. The array is then shuffled. A question is made ( ? * accumulator = total) which the user answers.
Hope someone can help!
Thanks
Here's the whole snack (apologies for the mess!)
const arr =
export default class NumberBonds extends React.Component {
constructor() {
super()
this.state = {
accumulator: '',
count: 0,
number: '',
total: '',
}
}
// Modal Functions
setModalVisible(visible) {
this.setState({ modalVisible: !visible })
}
renderArray(val) {
for (let i = 1; i <= val; i++) { arr.push(i) } let i = 0; let j = 0; let temp = null; for (i = arr.length - 1; i > 0; i -= 1) { j = Math.floor(Math.random() * (i + 1)); temp = arr[i]; arr[i] = arr[j]; arr[j] = temp; }
this.setModalVisible(!this.state.modalVisible)
this.setState({
accumulator: arr[this.state.count],
})
return arr
}
modalPassValue(value) {
this.setState({
total: this.state.total + value
})
}
// Main Functions
customAlertCorrect() {
Alert.alert(
'Correct',
'Well Done!',
[
{
text: 'Next',
onPress: () => {this.setState(prevState => ({count: prevState.count + 1}))}
}]
)
}
customAlertDone() {
Alert.alert('Fantastic', 'All Done!')
}
customAlertWrong() {
Alert.alert('Not Quite', 'Try Again!')
}
check() {
// If numbers matching, say correct. Move on. If not matching, say incorrect. Move on. If matching and then no more, STOP
if (parseInt(this.state.number) + this.state.accumulator === parseInt(this.state.total)) {
this.setState( {
number: '',
accumulator: arr[this.state.count]
})
this.customAlertCorrect()
} else {
this.customAlertWrong()
this.setState({
number: '',
})
}
if (parseInt(this.state.count) === parseInt(this.state.total)) {
this.customAlertDone()
}
}
render() {
return (
<View style={styles.container}>
<View style={{ marginTop: 100, marginLeft: 100 }}>
<Modal animationType="slide" transparent={false} visible={this.state.modalVisible}>
<View>
<View style={{ marginTop: 50, }}>
<Text style={{ fontSize: 50, fontFamily: 'hobostd', }}>Enter your Number Bond</Text>
<Text style={{ fontSize: 50, backgroundColor: 'pink', height: 200, color: 'white' }}>{this.state.total}</Text>
</View>
</View>
<View style={{ flex: 1, backgroundColor: 'white', flexDirection: 'row', flexWrap: 'wrap', justifyContent: 'center', alignItems: 'center' }}>
<View style={{ backgroundColor: 'white', flexDirection: 'row', flexWrap: 'wrap', justifyContent: 'flex-start' }}>
<TouchableOpacity onPress={() => this.modalPassValue(1)} style={styles.buttons}><Text style={styles.buttonsText}>1</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(2)} style={styles.buttons}><Text style={styles.buttonsText}>2</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(3)} style={styles.buttons}><Text style={styles.buttonsText}>3</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(4)} style={styles.buttons}><Text style={styles.buttonsText}>4</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(5)} style={styles.buttons}><Text style={styles.buttonsText}>5</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(6)} style={styles.buttons}><Text style={styles.buttonsText}>6</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(7)} style={styles.buttons}><Text style={styles.buttonsText}>7</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(8)} style={styles.buttons}><Text style={styles.buttonsText}>8</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(9)} style={styles.buttons}><Text style={styles.buttonsText}>9</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ total: '' })} style={styles.buttons}><Text style={styles.buttonsText}>Del</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(0)} style={styles.buttons}><Text style={styles.buttonsText}>0</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.renderArray(this.state.total)} style={styles.buttons}><Text style={styles.buttonsText}>Done</Text></TouchableOpacity>
</View>
</View>
</Modal>
</View>
<View style={{ marginBottom: 20 }}><Text style={{ fontSize: 50, textAlign: 'center' }}>Accumulator: {this.state.accumulator}</Text></View>
<View style={{ marginBottom: 20, flexDirection: 'row', justifyContent: 'space-around' }}>
<View style={{ backgroundColor: 'red', height: 70, width: 100, borderRadius: 20, }}><Text style={{ fontSize: 50, textAlign: 'center', }}>{this.state.accumulator}</Text></View>
<Text style={{ fontSize: 50, textAlign: 'center', height: 50, width: 40, }}>+</Text>
<View style={{ backgroundColor: 'yellow', height: 70, width: 100, borderRadius: 20, }}><Text style={{ fontSize: 50, textAlign: 'center', }}>{this.state.number}</Text></View>
<Text style={{ fontSize: 50, textAlign: 'center', height: 50, width: 40, }}>=</Text>
<View style={{ backgroundColor: 'orange', height: 70, width: 100, borderRadius: 20, }}><Text style={{ fontSize: 50, textAlign: 'center', }}>{this.state.total}</Text></View>
</View>
<View style={{ flex: 1, backgroundColor: 'white', flexDirection: 'row', flexWrap: 'wrap', justifyContent: 'center', alignItems: 'center' }}>
<View style={{ backgroundColor: 'white', flexDirection: 'row', flexWrap: 'wrap', justifyContent: 'center' }}>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 1 })} style={styles.buttons}><Text style={styles.buttonsText}>1</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 2 })} style={styles.buttons}><Text style={styles.buttonsText}>2</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 3 })} style={styles.buttons}><Text style={styles.buttonsText}>3</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 4 })} style={styles.buttons}><Text style={styles.buttonsText}>4</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 5 })} style={styles.buttons}><Text style={styles.buttonsText}>5</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 6 })} style={styles.buttons}><Text style={styles.buttonsText}>6</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 7 })} style={styles.buttons}><Text style={styles.buttonsText}>7</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 8 })} style={styles.buttons}><Text style={styles.buttonsText}>8</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 9 })} style={styles.buttons}><Text style={styles.buttonsText}>9</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: '' })} style={styles.buttons}><Text style={styles.buttonsText}>Del</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 0 })} style={styles.buttons}><Text style={styles.buttonsText}>0</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.check()} style={styles.buttons}><Text style={styles.buttonsText}>Check</Text></TouchableOpacity>
</View>
</View>
</View>
);
}
}
reactjs react-native
edited Nov 9 at 18:02
Prasun
2,3542814
asked Nov 9 at 17:48
Pav Soor
61
first question ever!
I have the file on Expo - https://snack.expo.io/@pssoor/Y3JhYm
The problem I have is that if you answer a multiplication question correctly, I have to press it again before the accumulator works. Everything else is functioning OK.
The idea behind the code is to select a number from a modal, which makes an array of numbers up to that particular number. The array is then shuffled. A question is made ( ? * accumulator = total) which the user answers.
Hope someone can help!
Thanks
Here's the whole snack (apologies for the mess!)
const arr =
export default class NumberBonds extends React.Component {
constructor() {
super()
this.state = {
accumulator: '',
count: 0,
number: '',
total: '',
}
}
// Modal Functions
setModalVisible(visible) {
this.setState({ modalVisible: !visible })
}
renderArray(val) {
for (let i = 1; i <= val; i++) { arr.push(i) } let i = 0; let j = 0; let temp = null; for (i = arr.length - 1; i > 0; i -= 1) { j = Math.floor(Math.random() * (i + 1)); temp = arr[i]; arr[i] = arr[j]; arr[j] = temp; }
this.setModalVisible(!this.state.modalVisible)
this.setState({
accumulator: arr[this.state.count],
})
return arr
}
modalPassValue(value) {
this.setState({
total: this.state.total + value
})
}
// Main Functions
customAlertCorrect() {
Alert.alert(
'Correct',
'Well Done!',
[
{
text: 'Next',
onPress: () => {this.setState(prevState => ({count: prevState.count + 1}))}
}]
)
}
customAlertDone() {
Alert.alert('Fantastic', 'All Done!')
}
customAlertWrong() {
Alert.alert('Not Quite', 'Try Again!')
}
check() {
// If numbers matching, say correct. Move on. If not matching, say incorrect. Move on. If matching and then no more, STOP
if (parseInt(this.state.number) + this.state.accumulator === parseInt(this.state.total)) {
this.setState( {
number: '',
accumulator: arr[this.state.count]
})
this.customAlertCorrect()
} else {
this.customAlertWrong()
this.setState({
number: '',
})
}
if (parseInt(this.state.count) === parseInt(this.state.total)) {
this.customAlertDone()
}
}
render() {
return (
<View style={styles.container}>
<View style={{ marginTop: 100, marginLeft: 100 }}>
<Modal animationType="slide" transparent={false} visible={this.state.modalVisible}>
<View>
<View style={{ marginTop: 50, }}>
<Text style={{ fontSize: 50, fontFamily: 'hobostd', }}>Enter your Number Bond</Text>
<Text style={{ fontSize: 50, backgroundColor: 'pink', height: 200, color: 'white' }}>{this.state.total}</Text>
</View>
</View>
<View style={{ flex: 1, backgroundColor: 'white', flexDirection: 'row', flexWrap: 'wrap', justifyContent: 'center', alignItems: 'center' }}>
<View style={{ backgroundColor: 'white', flexDirection: 'row', flexWrap: 'wrap', justifyContent: 'flex-start' }}>
<TouchableOpacity onPress={() => this.modalPassValue(1)} style={styles.buttons}><Text style={styles.buttonsText}>1</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(2)} style={styles.buttons}><Text style={styles.buttonsText}>2</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(3)} style={styles.buttons}><Text style={styles.buttonsText}>3</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(4)} style={styles.buttons}><Text style={styles.buttonsText}>4</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(5)} style={styles.buttons}><Text style={styles.buttonsText}>5</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(6)} style={styles.buttons}><Text style={styles.buttonsText}>6</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(7)} style={styles.buttons}><Text style={styles.buttonsText}>7</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(8)} style={styles.buttons}><Text style={styles.buttonsText}>8</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(9)} style={styles.buttons}><Text style={styles.buttonsText}>9</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ total: '' })} style={styles.buttons}><Text style={styles.buttonsText}>Del</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.modalPassValue(0)} style={styles.buttons}><Text style={styles.buttonsText}>0</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.renderArray(this.state.total)} style={styles.buttons}><Text style={styles.buttonsText}>Done</Text></TouchableOpacity>
</View>
</View>
</Modal>
</View>
<View style={{ marginBottom: 20 }}><Text style={{ fontSize: 50, textAlign: 'center' }}>Accumulator: {this.state.accumulator}</Text></View>
<View style={{ marginBottom: 20, flexDirection: 'row', justifyContent: 'space-around' }}>
<View style={{ backgroundColor: 'red', height: 70, width: 100, borderRadius: 20, }}><Text style={{ fontSize: 50, textAlign: 'center', }}>{this.state.accumulator}</Text></View>
<Text style={{ fontSize: 50, textAlign: 'center', height: 50, width: 40, }}>+</Text>
<View style={{ backgroundColor: 'yellow', height: 70, width: 100, borderRadius: 20, }}><Text style={{ fontSize: 50, textAlign: 'center', }}>{this.state.number}</Text></View>
<Text style={{ fontSize: 50, textAlign: 'center', height: 50, width: 40, }}>=</Text>
<View style={{ backgroundColor: 'orange', height: 70, width: 100, borderRadius: 20, }}><Text style={{ fontSize: 50, textAlign: 'center', }}>{this.state.total}</Text></View>
</View>
<View style={{ flex: 1, backgroundColor: 'white', flexDirection: 'row', flexWrap: 'wrap', justifyContent: 'center', alignItems: 'center' }}>
<View style={{ backgroundColor: 'white', flexDirection: 'row', flexWrap: 'wrap', justifyContent: 'center' }}>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 1 })} style={styles.buttons}><Text style={styles.buttonsText}>1</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 2 })} style={styles.buttons}><Text style={styles.buttonsText}>2</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 3 })} style={styles.buttons}><Text style={styles.buttonsText}>3</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 4 })} style={styles.buttons}><Text style={styles.buttonsText}>4</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 5 })} style={styles.buttons}><Text style={styles.buttonsText}>5</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 6 })} style={styles.buttons}><Text style={styles.buttonsText}>6</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 7 })} style={styles.buttons}><Text style={styles.buttonsText}>7</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 8 })} style={styles.buttons}><Text style={styles.buttonsText}>8</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 9 })} style={styles.buttons}><Text style={styles.buttonsText}>9</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: '' })} style={styles.buttons}><Text style={styles.buttonsText}>Del</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.setState({ number: this.state.number + 0 })} style={styles.buttons}><Text style={styles.buttonsText}>0</Text></TouchableOpacity>
<TouchableOpacity onPress={() => this.check()} style={styles.buttons}><Text style={styles.buttonsText}>Check</Text></TouchableOpacity>
</View>
</View>
</View>
);
}
}
reactjs react-native
reactjs react-native
edited Nov 9 at 18:02
Prasun
2,3542814
asked Nov 9 at 17:48
Pav Soor
61
edited Nov 9 at 18:02
Prasun
2,3542814
asked Nov 9 at 17:48
Pav Soor
61
edited Nov 9 at 18:02
Prasun
2,3542814
edited Nov 9 at 18:02
Prasun
2,3542814
edited Nov 9 at 18:02
Prasun
2,3542814
2,3542814
asked Nov 9 at 17:48
Pav Soor
61
asked Nov 9 at 17:48
Pav Soor
61
asked Nov 9 at 17:48
Pav Soor
61
61
Just to mention, I couldn't fix it using the setState (or updater) methods. I concluded that the issue is the asynchronous nature of state. Installed mobx and it worked right away! Problem solved!
– Pav Soor
Nov 12 at 10:37
add a comment |
Just to mention, I couldn't fix it using the setState (or updater) methods. I concluded that the issue is the asynchronous nature of state. Installed mobx and it worked right away! Problem solved!
– Pav Soor
Nov 12 at 10:37
Just to mention, I couldn't fix it using the setState (or updater) methods. I concluded that the issue is the asynchronous nature of state. Installed mobx and it worked right away! Problem solved!
– Pav Soor
Nov 12 at 10:37
Just to mention, I couldn't fix it using the setState (or updater) methods. I concluded that the issue is the asynchronous nature of state. Installed mobx and it worked right away! Problem solved!
– Pav Soor
Nov 12 at 10:37
add a comment |
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Just to mention, I couldn't fix it using the setState (or updater) methods. I concluded that the issue is the asynchronous nature of state. Installed mobx and it worked right away! Problem solved!
– Pav Soor
Nov 12 at 10:37