【已解决】ReactJS的JS的H5中如何回调原生的iOS和Android的app

javascript 回调原生app

H5 调用原生app 接口

混合app开发，h5页面调用ios原生APP的接口 – lengyue0030 – 博客园

H5 js call native app

JSBridge——Web与Native交互之iOS篇 – 简书

H5与Native交互之JSBridge技术 – 劲风 – 有赞技术团队

html5 – Native code calling JS in Android webapps – Stack Overflow

Best Of Both Worlds: Mixing HTML5 And Native Code – Smashing Magazine

reactjs 调用原生 iOS

react js 调用原生 iOS

react js call iOS android

javascript – React component communication with Native Mobile (iOS or Android) – Stack Overflow

h5 call iOS android

jingle1267/AndroidSchemeDemo: H5唤起原生APP

h5唤起app | 愚人码头

How to launch android application from my html5 mobile web application – Stack Overflow

Call Android methods from JavaScript – Stack Overflow

HTML5 invoke native app (ios and android) – Stack Overflow

android 的webView加载h5，和h5的交互（java和JavaScript的交互） – 彭思正的博客 – CSDN博客

JSBridge——Web与Native交互之iOS篇 – 简书

H5与Native交互之JSBridge技术 – 劲风 – 有赞技术团队

H5（js）中，用：

var url = ‘jsbridge://doAction?title=分享标题&desc=分享描述&link=http%3A%2F%2Fwww.baidu.com’;

var iframe = document.createElement(‘iframe’);

iframe.style.width = ‘1px’;

iframe.style.height = ‘1px’;

iframe.style.display = ‘none’;

iframe.src = url;

document.body.appendChild(iframe);

setTimeout(function() {

iframe.remove();

}, 100);

但是，此处是Reactjs，如何写上述的代码？

reactjs add iframe

reactjs – Inserting the iframe into react component – Stack Overflow

How to use Iframely embeds with ReactJS

reactjs insert iframe

此处，已经实现了显示或不显示iframe了：

export default class Header extends Component {

state = {

curUrl : "/",

showIframe : false

}

constructor(props) {

super(props);

this.gotoScan = this.gotoScan.bind(this);

}

gotoScan(){

console.log("gotoScan");

// this.showIframe();

this.toggleIframe();

}

toggleIframe(){

if (this.state.showIframe) {

this.hideIframe();

} else {

this.showIframe();

}

showIframe(){

// console.log(`this.state.showIframe=${this.state.showIframe}`);

this.setState({showIframe : true});

// console.log(`this.state.showIframe=${this.state.showIframe}`);

}

hideIframe(){

this.setState({showIframe : false});

}

showOrHideIframe(){

if (this.state.showIframe) {

return <iframe src="jsbridge://showScanDevice?para1=value1&para2=value2" width="1px" height="1px"/>;

// return <iframe src="http://www.baidu.com’" width="400px" height="500px" display="block"/>;

}

return null;

}

showRightIcon(curPageType){

if (curPageType.right.icon === HEADER_ICON.NONE) {

return null;

} else if (curPageType.right.icon === HEADER_ICON.SCAN) {

return (

{this.showOrHideIframe()}

<i/>

</div>

</a>

);

} else if (curPageType.right.icon == HEADER_ICON.ADD) {

return (

</div>

</Link>

);

}

return null;

}

效果是：

不显示iframe：

显示只有一个像素的iframe：

但是，听Android开发说，之前其所用的是另外一种：

iOS或Android端，都提供，暴露出一个控件名，比如AppHost，然后js端直接调用

window.AppHost.someFunc

android 的webView加载h5，和h5的交互（java和JavaScript的交互） – 彭思正的博客 – CSDN博客

下面问题就转化为：

reactjs中如何获得window变量

reactjs window

javascript – How do I use the window object in ReactJS? – Stack Overflow

去调试看看，log出this看看其中是否包含对应的window变量

javascript – Get viewport/window height in ReactJS – Stack Overflow

貌似直接可以使用window？

javascript – React.js best practice regarding listening to window events from components – Stack Overflow

去试了试：

gotoScan(){

console.log("gotoScan");

console.log(window);

// this.showIframe();

this.toggleIframe();

}

果然是可以直接使用window：

然后用代码：

gotoScan(){

console.log("gotoScan");

console.log(window);

console.log(window.AppHost);

if (window.AppHost !== undefined) {

console.log(window.AppHost.scanner);

//window.AppHost.scanDevice();

//扫描：scanner()—-scannerCallBack(String s);

window.AppHost.scanner();

}

移动端的效果是：

点击右上角的扫描按钮，调用原生的app中的扫码

然后去扫码：

扫码到之后，弹出提示：

然后再去考虑：

如何接受来自于app端（iOS和Android）中的回调函数

但是此处，试了几种写法：

其中一个是Header这个Component内部的scannerCallBack

另外一个是外部的function scannerCallBack

export default class Header extends Component {

constructor(props) {

super(props);

this.gotoScan = this.gotoScan.bind(this);

this.scannerCallBack = this.scannerCallBack.bind(this);

}

gotoScan(){

console.log("gotoScan");

console.log(window);

console.log(window.AppHost);

if (window.AppHost !== undefined) {

console.log(window.AppHost.scanner);

alert("Header before call gotoScan");

//window.AppHost.scanDevice();

//扫描：scanner()—-scannerCallBack(String s);

window.AppHost.scanner();

alert("Header after call gotoScan");

}

route("/bindDeviceCow/1");

}

scannerCallBack(scannedString){

route("/profile");

alert("inside Header scannerCallBack");

console.log("scannerCallBack");

console.log(scannedString);

alert(scannedString);

}

function scannerCallBack(scannedString) {

route("/function");

alert("outside Header scannerCallBack");

console.log("scannerCallBack");

console.log(scannedString);

alert(scannedString);

}

都无法被调用。

然后听说是：

想办法搞清楚，是否有全局的js方法，应该可以被调用

reacjs js global function

components – ReactJs Global Helper Functions – Stack Overflow

reactjs – How to create helper file full of functions in react native? – Stack Overflow

去试试export

export function scannerCallBack(scannedString) {

…

alert("outside Header scannerCallBack");

console.log("scannerCallBack");

console.log(scannedString);

alert(scannedString);

}

结果也没有被调用。

再后来试了试：

export function scannerCallBack(scannedString) {

// route("/function");

//TODO: extarct device code from scanned string

let deviceCode = scannedString;

route(`/bindDeviceCow/1/${deviceCode}`);

alert("outside Header scannerCallBack");

console.log("scannerCallBack");

console.log(scannedString);

alert(scannedString);

}

window.AppHost.scannerCallBack = scannerCallBack;

window.scannerCallBack = scannerCallBack;

也是不行。

Global functions?：reactjs

reactjs – How to declare a global variable in React? – Stack Overflow

然后参考：

componentWillMount: function () {

window.MyVars = {

ajax: require(‘../helpers/ajax.jsx’),

utils: require(‘../helpers/utils.jsx’)

};

}

想到，是不是可以自己也去componentWillMount，加上：

window.myFunc = xxx

呢？

经过尝试，是可以的：

【总结】

1.H5中（ReactJS的）JS代码为：

export default class Header extends Component {

constructor(props) {

super(props);

this.gotoScan = this.gotoScan.bind(this);

this.scannerCallBack = this.scannerCallBack.bind(this);

}

componentWillMount() {

window.scannerCallBack = this.scannerCallBack;

}

gotoScan(){

console.log("gotoScan");

console.log(window);

console.log(window.AppHost);

if (window.AppHost !== undefined) {

console.log(window.AppHost.scanner);

//Native(iOS/Android)：scanner();

//window.AppHost.scanDevice();

window.AppHost.scanner();

}

//Native(iOS/Android)：scannerCallBack(String s);

scannerCallBack(scannedString){

//TODO: extarct device code from scanned string

let deviceCode = scannedString;

alert(deviceCode);

route(`/bindDeviceCow/1/${deviceCode}`);

}

2.对应的原生代码：

（1）Android代码

ucowsapp_android/app/src/main/java/com/ucows/aotoso/js/JSBridge.java

package com.ucows.aotoso.js;

import android.content.Context;

import android.webkit.JavascriptInterface;

import android.webkit.WebView;

import com.ucows.aotoso.MyEventEnum;

import org.greenrobot.eventbus.EventBus;

import java.util.Set;

import cn.jpush.android.api.JPushInterface;

import cn.jpush.android.api.TagAliasCallback;

/**

* Created by Administrator on 2017/7/5.

public class JSBridge {

private String TAG = getClass().getSimpleName();

private Context mContext;

private WebView mWebView;

public JSBridge(Context mContext, WebView mWebView) {

this.mContext = mContext;

this.mWebView = mWebView;

}

@JavascriptInterface

public void scanner() {

EventBus.getDefault().post(MyEventEnum.openScanner);

//scannerCallBack

}

@JavascriptInterface

public void loginIn(String alias) {

if (alias != null) {

JPushInterface.setAlias(mContext, alias, new TagAliasCallback() {

@Override

public void gotResult(int i, String s, Set<String> set) {

}

});

}

@JavascriptInterface

public void loginOut() {

JPushInterface.setAlias(mContext, "", new TagAliasCallback() {

@Override

public void gotResult(int i, String s, Set<String> set) {

}

});

}

ucowsapp_android/app/src/main/java/com/ucows/aotoso/activity/MainActivity.java

package com.ucows.aotoso.activity;

import android.Manifest;

import android.annotation.SuppressLint;

import android.content.Intent;

import android.os.Bundle;

import android.support.annotation.Nullable;

import android.view.KeyEvent;

import android.webkit.WebChromeClient;

import android.webkit.WebSettings;

import android.webkit.WebView;

import android.widget.Toast;

import com.ucows.aotoso.MyEventEnum;

import com.ucows.aotoso.R;

import com.ucows.aotoso.base.BaseActivity;

import com.ucows.aotoso.config.ServerConstants;

import com.ucows.aotoso.js.JSBridge;

import com.uuzuche.lib_zxing.activity.CodeUtils;

import org.greenrobot.eventbus.EventBus;

import org.greenrobot.eventbus.Subscribe;

import java.util.List;

import butterknife.BindView;

import pub.devrel.easypermissions.AppSettingsDialog;

import pub.devrel.easypermissions.EasyPermissions;

public class MainActivity extends BaseActivity implements EasyPermissions.PermissionCallbacks {

@BindView(R.id.webView)

WebView webView;

/**

* 请求CAMERA权限码

public static final int REQUEST_CAMERA_PERM = 101;

@Override

protected int getLayoutId(@Nullable Bundle savedInstanceState) {

return R.layout.activity_main;

}

@SuppressLint("JavascriptInterface")

@Override

protected void init(Bundle savedInstanceState) {

EventBus.getDefault().register(this);

WebSettings settings = webView.getSettings();

//允许加在JS

settings.setJavaScriptEnabled(true);

// settings.setAppCacheEnabled(true);

// settings.setAppCachePath();

//不显示缩放指针

settings.setDisplayZoomControls(false);

//不允许缩放

settings.setSupportZoom(false);

//自适应

settings.setUseWideViewPort(true);

settings.setLoadWithOverviewMode(true);

webView.setWebChromeClient(new WebChromeClient() {

@Override

public void onProgressChanged(WebView view, int newProgress) {

super.onProgressChanged(view, newProgress);

showPd();

if (newProgress == 100) {

hidePd();

}

});

webView.addJavascriptInterface(new JSBridge(this, webView), "AppHost");

webView.loadUrl(ServerConstants.baseWebUrl);

// webView.loadUrl("file:///android_asset/test.html");

}

@Override

protected void onDestroy() {

EventBus.getDefault().unregister(this);

super.onDestroy();

}

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

super.onActivityResult(requestCode, resultCode, data);

if (requestCode == 100 && resultCode == RESULT_OK && data != null) {

String result = "";

Bundle bundle = data.getExtras();

if (bundle != null) {

if (bundle.getInt(CodeUtils.RESULT_TYPE) == CodeUtils.RESULT_SUCCESS) {

result = bundle.getString(CodeUtils.RESULT_STRING);

// Toast.makeText(this, "解析结果:" + result, Toast.LENGTH_LONG).show();

} else if (bundle.getInt(CodeUtils.RESULT_TYPE) == CodeUtils.RESULT_FAILED) {

// Toast.makeText(MainActivity.this, "解析二维码失败", Toast.LENGTH_LONG).show();

}

webView.loadUrl("javascript:scannerCallBack(" + "’" + result + "’" + ")");

}

@Override

public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {

super.onRequestPermissionsResult(requestCode, permissions, grantResults);

// Forward results to EasyPermissions

EasyPermissions.onRequestPermissionsResult(requestCode, permissions, grantResults, this);

}

@Override

public void onPermissionsGranted(int requestCode, List<String> perms) {

if (requestCode == REQUEST_CAMERA_PERM) {

startActivityForResult(new Intent(MainActivity.this, ScannerActivity.class), 100);

}

@Override

public void onPermissionsDenied(int requestCode, List<String> perms) {

if (EasyPermissions.somePermissionPermanentlyDenied(this, perms)) {

new AppSettingsDialog.Builder(this, "当前App需要申请camera权限,需要打开设置页面么?")

.setTitle("权限申请")

.setPositiveButton("确认")

.setNegativeButton("取消", null /* click listener */)

.setRequestCode(REQUEST_CAMERA_PERM)

.build()

.show();

}

public void openScanner() {

if (EasyPermissions.hasPermissions(MainActivity.this, Manifest.permission.CAMERA)) {

startActivityForResult(new Intent(MainActivity.this, ScannerActivity.class), 100);

} else {

EasyPermissions.requestPermissions(this, "需要请求camera权限",

REQUEST_CAMERA_PERM, Manifest.permission.CAMERA);

}

@Override

public boolean onKeyDown(int keyCode, KeyEvent event) {

// if (keyCode == KeyEvent.KEYCODE_BACK) {

// // TODO: 2017/7/5 test

//// openScanner();

// return true;

// }

if ((keyCode == KeyEvent.KEYCODE_BACK) && webView.canGoBack()) {

webView.goBack(); // goBack()表示返回WebView的上一页面

return true;

}

return super.onKeyDown(keyCode, event);

}

@Subscribe

public void onEventMainThread(MyEventEnum eventEnum) {

if (eventEnum == MyEventEnum.openScanner) {

openScanner();

}

/ucowsapp_android/app/src/main/java/com/ucows/aotoso/MyEventEnum.java

package com.ucows.aotoso;

public enum MyEventEnum {

openScanner,

}

（2）iOS代码

ucowsapp_ios/UCows/UCows/Class/Model/AppHost.h

// JS -> OC and OC -> JS

#import <Foundation/Foundation.h>

#import <JavaScriptCore/JavaScriptCore.h>

#import "MainWebViewController.h"

@protocol UCowJavaScriptDelegate <NSObject, JSExport>

#pragma mark – Method js->oc

// 扫一扫

– (void)scanDeviceCode;

// 退出登录

– (void)logout;

// 搜索 type=/cow

– (void)searchCode:(NSString *)type;

// 牛只活动量

– (void)cowActivity:(NSString *)cowCode Count:(NSString *)timestamp;

// 切换牛场

– (void)switchCowfarm;

// 转舍

– (void)switchCowshed;

@end

@interface AppHost : NSObject <UCowJavaScriptDelegate>

@property (nonatomic, weak) MainWebViewController *webViewController;

@property (nonatomic, weak) JSContext *jsContext;

#pragma mark – Method oc->js

// 扫一扫结束

– (void)scanDeviceCodeCallback:(NSString *)idString;

// (设备号、牛号)搜索回调

– (void)searchCallBack:(NSString *)type selectedCode:(NSString *)selectedCode;

// 切换牛场->回调

– (void)switchCowfarmCallback:(NSString *)cowfarmId;

// 登录成功后->回调

– (void)loginCallback:(NSString *)userInfoJson;

@end

ucowsapp_ios/UCows/UCows/Class/Model/AppHost.m

#import "AppHost.h"

#import "SubLBXScanViewController.h"

#import "SearchCowCodeViewController.h"

#import "SearchDeviceCodeViewController.h"

#import "CowActivityAmountViewController.h"

#import "SwitchCowFarmViewController.h"

#import "SwitchBarnViewController.h"

#import "PermissionTool.h"

#import "JPUSHService.h"

@implementation AppHost

#pragma mark – protocol Method js->oc

// 扫一扫

– (void)scanDeviceCode {

dispatch_async(dispatch_get_main_queue(), ^{

if ([PermissionTool cameraPemission]) { // 判断相机权限

SubLBXScanViewController *scan_vc = [[SubLBXScanViewController alloc] init];

scan_vc.resultBlock = ^(NSString *idString){

// oc掉js

[self scanDeviceCodeCallback:idString];

};

[self.webViewController.navigationController pushViewController:scan_vc animated:YES];

} else {

[PermissionTool getCameraPemission];

}

});

}

– (void)logout {

dispatch_async(dispatch_get_main_queue(), ^{

[self.webViewController logoutOperation];

});

}

// 搜索 type=device/cow

– (void)searchCode:(NSString *)type {

dispatch_async(dispatch_get_main_queue(), ^{

if ([type isEqualToString:@"cow"]) {

SearchCowCodeViewController *cowCode_vc = [[SearchCowCodeViewController alloc] init];

cowCode_vc.resultBlock = ^(NSString *cowCode) {

// oc掉js

[self searchCallBack:type selectedCode:cowCode];

};

[self.webViewController.navigationController pushViewController:cowCode_vc animated:YES];

}

if ([type isEqualToString:@"device"]) {

SearchDeviceCodeViewController *deviceCode_vc = [[SearchDeviceCodeViewController alloc] init];

deviceCode_vc.resultBlock = ^(NSString *cowCode) {

// oc掉js

[self searchCallBack:type selectedCode:cowCode];

};

[self.webViewController.navigationController pushViewController:deviceCode_vc animated:YES];

}

});

}

#pragma mark – Method oc->js

// 扫一扫结束

– (void)scanDeviceCodeCallback:(NSString *)idString {

NSString *jsFunctStr = [NSString stringWithFormat:@"scanDeviceCodeCallback(‘%@’)", idString];

[self.jsContext evaluateScript:jsFunctStr];

}

// (设备号、牛号)搜索回调

– (void)searchCallBack:(NSString *)type selectedCode:(NSString *)selectedCode {

NSString *jsFunctStr = [NSString stringWithFormat:@"searchCallback(‘%@’,’%@’)", type, selectedCode];

[self.jsContext evaluateScript:jsFunctStr];

}

3.然后即可实现：

（1）H5（Reactjs的JS）中调用原生方法

window.AppHost.scanner();

其中：

A，scanner()对应着原生（Android）中提供的方法

B，此处的ReactJS中，任何地方，都可以直接使用window，然后直接调用即可。

页面效果：

点击主页：

右上角的扫描按钮，调用原生的scanner

（2）原生（回调）H5（ReactJS中的JS）中的函数

确保ReactJS中componentWillMount给window中增加对应的函数：

window.scannerCallBack = this.scannerCallBack;

然后后续，原生中就可以调用对应的函数了。

页面效果：

原生扫码内容返回后，弹框提示：

然后跳转到对应的页面：

【后记】

1.后来遇到一个诡异的问题：

JS中调用iOS的原生，结果出现：

调用一个函数时，是2个参数，结果iOS端就无法调用了，接受不到函数调用了。

找了半天，找到个解决办法，很是诡异：

参考的：

iOS中的HTML交互简说 – Cocoa开发者

JS端的：

window.AppHost.cowActivityCount("", "");

对应着iOS端，需要把把之前的一个函数：

cowActivityCount

拆分成2个参数：

cowActivity count

注意第二个参数名字的c是小写，而原先函数中是大写的C

TODO：把相关代码贴过来。

再后记：

后来发现：

cowActivity Count

也是可以的

-》反推内部的JS的逻辑：

iOS的内部原生的JS解析库JavaScriptCore 自己内部拆分参数时，是按照单词去拆分的。。。

然后才能接收到2个参数。

TODO：

带后续再参考上面帖子去试试用JSON互相传递参数的方式：

// 通过JSON传过来

– (void)callWithDict:(NSDictionary *)params;

如果可行，那么以后如果超过1个参数的函数调用，都用JSON方式去传递参数，就不用这么变态的写法了。

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