在我的 RN 0.62.2 应用程序/Android 模拟器中,我正在寻找一种方法来关闭显示图像的模式,只需点击屏幕而不是放置关闭按钮。这是应用程序应该做的事情:
1. an image is displayed on screen
2. clicking the image pops up a modal screen which fill the width of the whole screen.
3. user can zoom in and out of the image on modal screen
4. as soon as a user taps the modal screen, then the modal screen is closed.
这是渲染代码:
import FastImage from 'react-native-fast-image';
import Modal from 'react-native-modal';
import ReactNativeZoomableView from '@dudigital/react-native-zoomable-view/src/ReactNativeZoomableView';
const [modalDialog, setModalDialog] = useState(null);
return (
<React.Fragment>
<TouchableOpacity onPress={()=>setModalDialog(index)}> //Touch triggers popping up of modal below
<FastImage //<<<===equivalent of Image. The image shown in square box
source={{uri:img_source}}
resizeMode={FastImage.resizeMode.cover}
style={{
width:width,
height:ht,
verticalAlign:0,
paddingTop:0,
}}
/>
</TouchableOpacity>
<TouchableOpacity onPress={()=> setModalDiaglog(null)}> //<<<===press shall close modal. But it is NOT
<Modal isVisible={modalDialog===index}>
<ReactNativeZoomableView //<<<===zoom in and out of image
maxZoom={3}
minZoom={0.5}
zoomStep={0.5}
initialZoom={1}
bindToBorders={true}
captureEvent={true}
>
<FastImage //<<==show image with full width of the device screen
source={{uri:img_source}}
resizeMode={FastImage.resizeMode.cover}
style={{
width:modalWidth,
height:modalHt,
verticalAlign:0,
paddingTop:0,
}}
/>
</ReactNativeZoomableView>
</Modal>
</TouchableOpacity>
</React.Fragment>
);
上面的代码可以通过1-3
但不是4
. 问题是无法在 Android 模拟器上关闭模态屏幕(模拟点击鼠标左键)。试着放进去<TouchableOpacity>
,<Modal>
没有用。下<TouchableOpacity>
一个<Modal>
只是没有回应记者。应用程序如何通过Modal
点击关闭?