This commit is contained in:
tdzl2003 2016-12-25 18:17:32 +08:00
parent d42276fd0f
commit ebb089d763
3 changed files with 123 additions and 90 deletions

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# react-native-inputscrollview
防止键盘弹出时候,输入框被遮挡
1. 防止键盘弹出时候,输入框被遮挡
2. 解决在ScrollView中点击其它元素时需要点击两次才能生效的问题
## 如何安装
0.35以上:
```bash
npm install react-native-inputscrollview --save
rnpm link react-native-inputscrollview
```
0.34以下:
```bash
npm install react-native-inputscrollview@1.x --save
rnpm link react-native-inputscrollview
```
## 如何使用
用InputScrollView替换InputView外层的ScrollView组件
## 属性
### distance: number (default 50)
当输入框非常靠近底部的时候,会自动和键盘保持一定的距离。这可以为你其它的组件留出空间。
### tapToDismiss: boolean (default true)
是否可以点击ScrollView来关闭键盘。

181
index.js
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@ -2,22 +2,22 @@
* Created by lvbingru on 12/16/15.
*/
import React, {Component, PropTypes, } from 'react';
import ReactNative, {InteractionManager, View, Text, ScrollView, Platform, Animated, UIManager, NativeModules, Dimensions} from 'react-native';
import React, {Component, PropTypes } from 'react';
import ReactNative, {
InteractionManager, View, Text, ScrollView, Platform, Animated, UIManager, NativeModules, Dimensions,
Keyboard,
} from 'react-native';
import TextInputState from 'react-native/Libraries/Components/TextInput/TextInputState';
import dismissKeyboard from 'react-native/Libraries/Utilities/dismissKeyboard';
import packageData from 'react-native/package.json';
import semver from 'semver';
const ViewPlugins = NativeModules.InputScrollViewPlugin;
const dismissKeyboard = Keyboard.dismiss;
const propTypes = {
distance : PropTypes.number,
tapToDismiss : PropTypes.bool,
onKeyboardWillShow : PropTypes.func,
}
const defaultProps = {
distance : 160,
distance : 50,
tapToDismiss : true,
}
@ -33,92 +33,104 @@ export default class InputScrollView extends Component {
this.moved = false;
}
componentWillMount() {
this.keyboardWillShowListener = Keyboard.addListener('keyboardWillShow', this.onKeyboardWillShow);
this.keyboardWillHideListener = Keyboard.addListener('keyboardWillHide', this.onKeyboardWillHide);
}
componentWillUnmount() {
this.keyboardWillShowListener.remove();
this.keyboardWillHideListener.remove();
}
onKeyboardWillShow = e => {
if (!this.scrollViewRef) {
return;
}
const currentlyFocusedTextInput = TextInputState.currentlyFocusedField();
if (currentlyFocusedTextInput != null) {
ViewPlugins && ViewPlugins.isSubview(
currentlyFocusedTextInput,
this.scrollViewRef.getInnerViewNode(),
r => {
if (r === true) {
this.move(currentlyFocusedTextInput, e)
}
});
}
};
onKeyboardWillHide = e=> {
if (!this.scrollViewRef) {
return;
}
if (this.moved) {
this.moved = false;
this.scrollToY(this.offsetY);
}
};
render() {
const {distance, tapToDismiss, onKeyboardWillShow, keyboardShouldPersistTaps, children, ...others} = this.props
return (
<View
style = {{flex:1}}
onStartShouldSetResponderCapture = {e=>{
if (tapToDismiss === true) {
const currentlyFocusedTextInput = TextInputState.currentlyFocusedField();
if (e.target != currentlyFocusedTextInput) {
if (ViewPlugins && ViewPlugins.isTextInput) {
ViewPlugins.isTextInput(
e.target,
r => {
if (r===false) {
dismissKeyboard();
}
}
);
}
else {
dismissKeyboard();
}
}
}
return false;
}}
>
<ScrollView
<View
style = {{flex:1}}
contentContainerStyle = {[{alignItems : 'stretch',}]}
keyboardShouldPersistTaps = {tapToDismiss?true:keyboardShouldPersistTaps}
ref={(srcollView) => {
this.scrollViewRef = srcollView;
}}
onKeyboardWillShow = {e => {
if (!this.scrollViewRef) {
return;
onStartShouldSetResponderCapture = {e=>{
if (tapToDismiss === true) {
const currentlyFocusedTextInput = TextInputState.currentlyFocusedField();
if (e.target != currentlyFocusedTextInput) {
if (ViewPlugins && ViewPlugins.isTextInput) {
ViewPlugins.isTextInput(
e.target,
r => {
if (r===false) {
dismissKeyboard();
}
}
);
}
else {
dismissKeyboard();
}
}
}
const currentlyFocusedTextInput = TextInputState.currentlyFocusedField();
if (currentlyFocusedTextInput != null) {
ViewPlugins && ViewPlugins.isSubview(
currentlyFocusedTextInput,
this.scrollViewRef.getInnerViewNode(),
r => {
if(r===true) {this.move(currentlyFocusedTextInput, e)}
});
}
onKeyboardWillShow && onKeyboardWillShow(e);
return false;
}}
onKeyboardWillHide = {e=> {
if (!this.scrollViewRef) {
return;
}
if (this.moved) {
this.moved = false;
this.scrollToY(this.offsetY);
}
}}
onMomentumScrollEnd = {e=>{
if (!this.moved) {
this.offsetY = Math.max(0, e.nativeEvent.contentOffset.y)
}
}}
{...others}
>
{children}
</ScrollView>
</View>
>
<ScrollView
style = {{flex:1}}
contentContainerStyle = {[{alignItems : 'stretch',}]}
keyboardShouldPersistTaps = {tapToDismiss?true:keyboardShouldPersistTaps}
ref={(srcollView) => {
this.scrollViewRef = srcollView;
}}
onMomentumScrollEnd = {e=>{
if (!this.moved) {
this.offsetY = Math.max(0, e.nativeEvent.contentOffset.y)
}
}}
{...others}
>
{children}
</ScrollView>
</View>
);
}
move(currentlyFocusedTextInput, e) {
UIManager.measureLayout(
currentlyFocusedTextInput,
ReactNative.findNodeHandle(this.scrollViewRef.getInnerViewNode()),
e=>{console.warning(e)},
(left, top, width, height)=>{
let keyboardScreenY = Dimensions.get('window').height;
if (e && e.endCoordinates) {
keyboardScreenY = e.endCoordinates.screenY;
}
let scrollOffsetY = top - keyboardScreenY + height + this.props.distance;
scrollOffsetY = Math.max(this.offsetY, scrollOffsetY);
this.scrollToY(scrollOffsetY);
}
currentlyFocusedTextInput,
ReactNative.findNodeHandle(this.scrollViewRef.getInnerViewNode()),
e=>{console.warning(e)},
(left, top, width, height)=>{
let keyboardScreenY = Dimensions.get('window').height;
if (e) {
keyboardScreenY = e.endCoordinates.screenY;
}
let scrollOffsetY = top - keyboardScreenY + height + this.props.distance;
scrollOffsetY = Math.max(this.offsetY, scrollOffsetY);
this.scrollToY(scrollOffsetY);
}
);
this.moved = true;
}
@ -128,12 +140,7 @@ export default class InputScrollView extends Component {
}
scrollToY(offsetY) {
if (semver.gte(packageData.version, '0.20.0')) {
this.scrollViewRef.scrollTo({x:0, y:offsetY});
}
else {
this.scrollViewRef.scrollTo(offsetY, 0);
}
this.scrollViewRef.scrollTo({x:0, y:offsetY});
}
}

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{
"name": "react-native-inputscrollview",
"version": "1.0.3",
"version": "2.0.0",
"description": "输入框位置动态调整",
"main": "index.js",
"scripts": {
@ -24,5 +24,8 @@
"homepage": "https://github.com/reactnativecn/react-native-inputscrollview.git%22#readme",
"dependencies": {
"semver": "^5.1.0"
},
"peerDependencies": {
"react-native": "^0.35.0"
}
}