I was able to figure this out. In my case, I am using an Obj-C base project (which is the RN default) with my own Swift native view controller. My solution is here in case this comes up for anyone else: Simply put, the answer is to use an RCTBridge module to allow the RN … Read more
If you’re looking to achieve this permanently you’ll have to hide the Navbar when the app is created and when it comes back into focus. To do so, add this in your MainActivity.java: … import android.os.Bundle; import android.view.View; public class MainActivity extends ReactActivity { … @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); hideNavigationBar(); } @Override … Read more
Important point is, we should not mutate the state array directly, always do the changes in new array and then use setState to update the state value. As suggested by Doc: Never mutate this.state directly, Treat this.state as if it were immutable. Basic flow of updating a state array is: 1- First create the copy … Read more
After exhausting the current spectrum of available options from Javascript I decided to simply implement certificate pinning natively it all seems so simple now that I’m done. Skip to headers titled Android Solution and IOS Solution if you don’t want to read through the process of reaching the solution. Android Following Kudo’s recommendation I thought … Read more
You can achieve this by passing in the onFocus and onBlur events to set and unset styles when focused and blurred: onFocus() { this.setState({ backgroundColor: ‘green’ }) }, onBlur() { this.setState({ backgroundColor: ‘#ededed’ }) }, And then, in the TextInput do this: <TextInput onBlur={ () => this.onBlur() } onFocus={ () => this.onFocus() } style={{ height:60, … Read more
Nader Dabit’s answer is outdated, since using String literals in ref attributes has been deprecated. This is how we would do it as of September 2017: <Child ref={child => {this.child = child}} {…this.props} /> <Button onPress={this.child.myfunc} /> Same functionality, but instead of using a String to reference the component, we store it in a global … Read more
Disabling font scaling can hurt the accessibility of your app, ideally if you want to limit scaling for Apps using React native 0.58.0 and above; use the maxFontSizeMultiplier prop on specific Text components. However if you absolutely want to disable font scaling across your entire Application, you can do so by globally setting the allowFontScaling … Read more
Given you have Animated.Value lets say x, you can interpolate color like this: render() { var color = this.state.x.interpolate({ inputRange: [0, 300], outputRange: [‘rgba(255, 0, 0, 1)’, ‘rgba(0, 255, 0, 1)’] }); return ( <Animated.View style={{backgroundColor:color}}></Animated.View> ); } You can find full working example in the issue I’ve posted on github.
“alignSelf” does the same as ‘display: inline-block’ would in common HTML/CSS and it works very well for me. <View style={{backgroundColor: ‘#000000’, alignSelf: ‘flex-start’ }}> <Text style={{color: ‘#ffffff’}}> Sample text here </Text> </View>
Normal re renders are normal in RN. That is just RN updating the react tree and updating views. If you dont have a performance issue then you can ignore this. Otherwise, please explain the problem because the console log is fine. Render item executes for EACH item in the data array you pass to FlatList. … Read more