I am interesting in how to make full screen image landscape orientation, but without height: 100%, so width will be 100% but what is with height, because in react native height: not work=
try like this
<View style={{ flexDirection: 'row',}}>
<Image
style={{
flex: 1,
width: null,
height: '100%',
overflow: 'hidden',
}}
resizeMode='contain'
source={{ uri: 'image path' }}
/>
First of all, install the package named #react-native-community/hooks ( npm i #react-native-community/hooks )
then import useDimentions and useDeviceOrientation from the package above.
Example: import {useDimentions,useDeviceOrientation } from "#react-native-community/hooks"
Destructure them like:
const { landscape, portrait } = useDeviceOrientation();
const { screen, window } = useDimensions();
landscape, portrait are booleans
screen, window are the objects with height, width and etc. ( just check it by console.log)
Then use screen.height or window.height to get the device's height
Related
How can I set the height of an image in gatsby? My approach was this:
My query:
image {
fluid {
...GatsbyContentfulFluid_withWebp
}
}
My return:
<Img fluid={image.fluid} style={{ maxHeight: '200px' }} alt={title}></Img>
The image is displaying fine but I query more than one image and using style={{ maxHeight: '200px' }} is not working for all images. Some images having different heights, I would like to display all images with the same height.
What's the proper way of doing this?
I think you are looking for a fixed image, not fluid:
My query:
image {
fixed {
...GatsbyContentfulFixed_withWebp
}
}
My return:
<Img fixed={image.fixed} style={{ height: '200px', width: 'auto' }} alt={title}></Img>
In addition, use the height, not the maxHeight property to force all image's height to 200px.
According to the docs you should use imgStyle property for directly applying styles to underlying <img>
Try something like
<Img
fluid={image.fluid}
imgStyle={{ height: '200px', width: 'auto' }}
alt={title}>
</Img>
style is applied to wrapper of <img> and your images might be overflowing it.
In my React Native app, I have a red box of height 300 that I want to center vertically, and an image that I want to sit inside and at the top of this red box. Here is my code so far:
import React, { Component } from 'react';
import { View, Image} from 'react-native';
export default class Login extends Component {
render() {
return (
<View style={{
flex: 1,
justifyContent: "center",
alignItems: "center"
}}>
<View
style={{
borderWidth: 3,
borderColor: 'red',
width: "100%",
height: 300
}}
>
<Image
source={require('../../images/swoord-top.png')}
style={{
width: "100%",
height: "100%",
resizeMode: "contain",
borderWidth: 3
}}
>
</Image>
</View>
</View>
);
}
}
Here's what this looks like:
The red box is the outer box I mentioned, and the black box is just the border of the Image. The problem is that this black box (ie the Image) expands to fill the red box vertically, and the image is vertically centered inside this black box, so it's vertically centered inside the red box, as opposed to at the flex-start position that I want it at. I've tried adding justifyContent: flex-start and flexShrink: 1 to the Image and neither has made a difference.
Does anyone know how I can approach this?
NOTE:
If I remove the height: 100% on the Image, I get this:
UPDATE:
To clarify, this is what I'd like it to look like. I've removed the black border here. I moved it up to where I want it by adding top: -95, but this won't work in general because the value would be different for different devices:
try doing like this
<Image
source={require('../../images/swoord-top.png')}
style={{
width: "100%",
borderWidth: 3
}}
resizeMode={"contain"}
/>
There is a difference between Image (the view) and the content of that image. On your screenshot, the image view has the black border and its content is sitting inside of it. Because they have different aspect ratios, there is going to be either a blank space or cut-off on the content. You can't adjust position of the content as it's not laid out on flex basis. Image view is just a window that then renders image content. There is no property to tell Image where to align that content
Your problem comes from the fact that screen width differs, and aspect ratio of your container also differs (variable width but constant 300 height). What you need to do is
measure container width
determine proper aspect ratio for the image based on image resource width and height
set your image width to 100% and its height according to received aspect ratio
here, my image dimensions are 1005 * 219:
const Test = () => {
const [width, setWidth] = useState(0);
return (
<View>
<View
onLayout={e => setWidth(e.nativeEvent.layout.width)}
style={{ width: '100%', height: 300, borderWidth: 1 }}>
<Image
style={{
width: '100%',
height: (width / 1005) * 219,
borderWidth: 1,
borderColor: 'red',
}}
source={require('...')}
/>
</View>
</View>
);
};
The code
import { Image } from 'react-native';
<Image style={StyleSheet.flatten([styles.introPicSize, styles.introPicBorder])} source={require("../../assets/images/intro-pic.png")} />
const styles = StyleSheet.create({
introPicSize: {
height: responsiveWidth(160),
width: responsiveWidth(160),
resizeMode:'contain'
},
introPicBorder: {
borderWidth:8,
borderRadius:100,
borderColor:"#BDB9CD",
overflow:'hidden'
}
}
What expected is to have image with border radius 100 (circle) (On Android & IOS)
The result is fine for IOS
but for Android , it's a square not circle (it reads the borderRadius as 0 not 100
check the below image
The image
borderRadius does not work with <Image /> in Android. You can see it here: https://github.com/facebook/react-native/issues/8885
The solution is to wrap it with the View and apply borderRadius for it.
<View style = {{flex: 1, borderRadius: 100}} >
<Image style={ {width: 300, height: 100 } } source={{ uri: 'https://placekitten.com/300/100' }}> </Image>
</View>
I'd like to achieve a layout with Flexbox in React Native. The idea is to be able to have a responsive image with text beneath it, vertically centered in on the page.
The issue seems that the View that contains the image, either ends up disappearing as the image has no height or filling the entire screen height and pushing the text that shoud be below the image down to the bottom.
I assume its to do with the image dimensions being undefined in order to get it to act in a responsive way and fill the parent container.
Here's a mockup of the layout
Update
Thanks Topik Mujianto - I was actually following that very tutorial!
Here's my code:
const styles = StyleSheet.create({
pageContainer: {
flex: 1,
flexDirection:'row',
justifyContent:'center',
backgroundColor: "blue",
alignItems: 'flex-start'
},
columnStyle: {
flex: 0.7,
flexDirection:'column',
backgroundColor: "red",
borderWidth: 1,
alignItems: 'flex-start'
},
imgStyle: {
flex: 1,
height: undefined,
width: undefined,
alignSelf: 'stretch',
}
})
const Component = props => (
<View style={styles.pageContainer}>
<View style={styles.columnStyle}>
<Image
style={styles.imgStyle}
resizeMode="contain"
source={require('../../../assets/images/onboarding-how-it-works.png')}
/>
</View>
</View>
);
Which gives this:
Centered on page
But if I try to get the image to align top with this code:
imgStyle: {
flex: 1,
height: undefined,
width: undefined,
alignSelf: 'felx-start',
}
I get this (the image has disappeared):
No image
After a bit more investigation I can see that acutally the image is stretching to fit as it has the flex: 1 property. I set the background colour to yellow on the image and get this:
Image background shows size of image box
So the question is, how do I get the image to be responsive without its container stretching to the parent and shrinking to fit the responsive image content, and then align it to the top?
How react native Text and Image responsive?
I only know the Flexbox can make layout responsive but seems can not apply in text and image.
e.g.Make my text and image smaller in iphone 4s, bigger in iphone 6
Thanks.
You can use Flexbox in order to make your application responsive.
For example, say you wanted to display a line of text and an image on the same line:
class ResponsiveExample extends Component {
render() {
return (
<View style={styles.container}>
<Text style={styles.text}>
Example of centered text
</Text>
<Image
resizeMode={"contain"}
style={styles.image}
source={{uri: "your image"}}/>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
flexDirection: "row",
alignItems: "center",
justifyContent: "space-between"
},
text: {
marginLeft: 20,
flex: 1
},
image: {
marginRight: 20,
height: 400,
flex: 3,
}
});
Now the text and image will be displayed relative to the screen size. The usual hangup here is that flexDirection defaults to column, which will make things line up vertically. You can see what happens when we flip from portrait to landscape orientation:
As you can see, the text and image respond to the change in orientation.
For a better overview of Flexbox, I like to refer to the following guide:
https://css-tricks.com/snippets/css/a-guide-to-flexbox/.
Just keep in mind that React Native defaults to a flex-direction of column, so if you want things laid out horizontally, you'll have to explicitly set it to row.
I think react-native-fit-image is useful for you.
React Native Fit Image enables you to draw responsive image component.
You can use this component as below.
<FitImage
source={{ uri: 'http://facebook.github.io/react/img/logo_og.png' }}
style={styles.fitImage}
/>
You are right to think about Flexbox, simply wrap your Text and Image inside View and make those View flexbox responsive.