“熱更新”、“熱部署”相信對于混合式開發的童鞋一定不陌生,那么APP怎么避免每次升級都要在APP應用商店發布呢?這里就用到了混合式開發的概念,對于電商網站尤其顯得重要,不可能每次發布一個活動,都要發布一個現版本,當然這樣對于Android還算可以,但是對于Ios呢?蘋果應用商店每次審核的時間基本都在1~2周,這對于一個促銷活動來說審核時間實在太長。而混合式開發正好可以解決這個問題,基本的原理時,通過原生控件實現APP的主體結構,借助H5開發對應的頁面,這樣每次發布活動,只需要在服務器端,將活動發布,便可以達到所有安裝用戶不升級便可查閱最新活動的效果。今天就為大家分享一下,如何實現JavaScript與APP原生控件交互。
一、首先為大家介紹的是JS與Android交互,首先讓大家看一下Android工程的目錄結構:
JSObject.java文件封裝了JS調用Android原生控件的方法;MainActivity.java是調用WebView控件實現網頁頁面加載,以及進行控件調用JS方法的封裝;test.html是我們加載的HTML頁面。接下來我們具體看一下實現:
MainActivity.java
package com.chinaonenet.mywebview;import android.annotation.SuppressLint; import android.app.Activity; import android.os.Bundle; import android.os.Handler; import android.view.View; import android.view.View.OnClickListener; import android.webkit.WebSettings; import android.webkit.WebView; import android.widget.Button;/*** SuppressLint一定要加上去!!!* 低版本可能沒問題,高版本JS鐵定調不了Android里面的方法*/ @SuppressLint("SetJavaScriptEnabled") public class MainActivity extends Activity {private Button button1,button2;private WebView mWebView;private MyWebViewClient WVClient;private WebSettings webSettings;private MyWebChromeClient chromeClient;//封裝接收js調用Android的方法類private JSObject jsobject;//異步請求private Handler mHandler = new Handler();@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);init();initView();setButton();}private void setButton() {//無參調用button1.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {mHandler.post(new Runnable() {@Overridepublic void run() {mWebView.loadUrl("javascript:showNoMessage()");}});}});//有參調用button2.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {mHandler.post(new Runnable() {@Overridepublic void run() {mWebView.loadUrl("javascript:showMessage('順帶給JS傳個參數')");}});}});}private void init() {mWebView = (WebView) findViewById(R.id.webview);button1 = (Button)findViewById(R.id.button1);button2 = (Button)findViewById(R.id.button2);WVClient = new MyWebViewClient();chromeClient = new MyWebChromeClient();jsobject = new JSObject(MainActivity.this); }private void initView() {webSettings = mWebView.getSettings();webSettings.setJavaScriptEnabled(true);webSettings.setBuiltInZoomControls(true);webSettings.setSavePassword(false);//支持多種分辨率,需要js網頁支持webSettings.setUserAgentString("mac os");webSettings.setDefaultTextEncodingName("utf-8");//顯示本地js網頁mWebView.loadUrl("file:///android_asset/test.html");mWebView.setWebViewClient(WVClient);mWebView.setWebChromeClient(chromeClient);//注意第二個參數android,這個是JS網頁調用Android方法的一個類似ID的東西mWebView.addJavascriptInterface(jsobject, "android");} }
頁面的配置文件(activity_main.xml)
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context="com.chinaonenet.mywebview.MainActivity" ><Buttonandroid:id="@+id/button1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:text="無參" /><Buttonandroid:id="@+id/button2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentRight="true"android:text="有參" /><WebViewandroid:id="@+id/webview"android:layout_width="wrap_content"android:layout_height="match_parent"android:layout_alignParentLeft="true"android:layout_alignParentRight="true"android:layout_below="@+id/button2" /><TextViewandroid:id="@+id/textView1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignBaseline="@+id/button1"android:layout_alignBottom="@+id/button1"android:layout_centerHorizontal="true"android:text="js與android交互" /></RelativeLayout>
JSObject.java
package com.chinaonenet.mywebview;import org.json.JSONArray; import org.json.JSONException;import android.content.Context; import android.content.Intent; import android.net.Uri; import android.webkit.JavascriptInterface; import android.widget.Toast;/*** JS調用android的方法* @JavascriptInterface仍然必不可少*/ public class JSObject {private Context context;public JSObject(Context context){this.context = context;}//js調用無參方法 @JavascriptInterfacepublic void callNull(){Toast.makeText(context, "JsCallAndroid", Toast.LENGTH_SHORT).show();}//js調用有參方法 @JavascriptInterfacepublic void callMessage(String data){Toast.makeText(context, data, Toast.LENGTH_SHORT).show();}//js調用有參方法,參數類型:JSON @JavascriptInterfacepublic void callJson(String data) throws JSONException{JSONArray jsonArray = new JSONArray(data);Toast.makeText(context, jsonArray.toString(), Toast.LENGTH_SHORT).show();}//js調用有參方法,參數類型:JSON,獲取電話號碼撥打 @JavascriptInterfacepublic void callPhone(String data){context.startActivity(new Intent(Intent.ACTION_CALL, Uri.parse("tel:" + data)));} }
加載的HTML頁面:
<style>.main-wrap ul {width: 100%;display: inline-block;padding-top: 20px;}.main-wrap ul li {float: left;width: 100%;height: 40px;line-height: 40px;font-size: 14px;margin-bottom: 20px;background-color: #00D000;color: #fff;text-align: center;cursor: pointer;}.main-wrap ul li:active {opacity: 0.8;} </style><div class="main-wrap"><ul class="postAndroid"><li onclick="jsCallAndroid('1')">不傳參數調用原生控件</li><li onclick="jsCallAndroid('2')">傳參數調用原生控件</li><li onclick="jsCallAndroid('3')">以JSON格式傳參數調用原生控件</li><li onclick="jsCallAndroid('4')">調用打電話服務</li></ul> </div><script>function jsCallAndroid(rel) {switch(rel){case "1":android.callNull();break;case "2":android.callMessage("javaScript操作Android原生");break;case "3":var json = "[{\"name\":\"滿藝網\", \"phone\":\"4008366069\"}]";android.callJson(json);break;case "4":android.callPhone("4008366069");break;}}function showNoMessage() {alert("Android無參調用");}function showMessage(data) {alert("Android有參調用-data:" + data);} </script>
這里因為需要實現一個撥打電話的功能,所以需要在AndroidManifest.xml文件中添加撥打電話的權限:
<uses-permission android:name="android.permission.CALL_PHONE" />
當然這里加載的頁面是本地頁面,當加載網絡頁面時需要添加請求網絡權限:
<uses-permission android:name="android.permission.INTERNET" />
好了關于JS與Android原生的控件進行相互調用的知識就介紹完了,最后附上DEML下載地址:http://pan.baidu.com/s/1eR6l7Fk? 提取密碼:4st0
二、JS與IOS原生交互,這里的開發語言選用的是Swift語言,版本是2.2。首先上工程目錄結構:
ViewController.swift
import UIKit import JavaScriptCoreclass ViewController: UIViewController {var context = JSContext()var jsContext: JSContext?@IBOutlet weak var webView: UIWebView!override func viewDidLoad() {super.viewDidLoad()webView.delegate = self//初始化webView loadJS()}/***加載html頁面*/func loadJS() {let str = NSBundle.mainBundle().pathForResource("test", ofType: "html")let request = NSURLRequest(URL: NSURL(string: str!)!)webView.loadRequest(request)}//Swift 調用JS 方法 (無參數) @IBAction func swift_js_pargram(sender: AnyObject) {self.context.evaluateScript("Swift_JS1()")//self.webView.stringByEvaluatingJavaScriptFromString("Swift_JS1()") //此方法也可行 }//Swift 調用JS 方法 (有參數) @IBAction func swift_js_nopargam(sender: AnyObject) {self.context.evaluateScript("Swift_JS2('Ios' ,'Swift')")//self.webView.stringByEvaluatingJavaScriptFromString("Swift_JS2('oc','swift')") //此方法也可行 }//js調用Swift方法(無參) func menthod1() {print("JS調用了無參數swift方法")let title = "操作提示";let msg = "JS調用了無參數swift方法";//創建提示信息let alert = UIAlertController(title: title, message: msg, preferredStyle: .Alert)//確定按鈕alert.addAction(UIAlertAction(title: "ok", style: .Default, handler: nil))//顯示提示框self.presentViewController(alert, animated: true, completion: nil)}//js調用Swift方法(有參數) func menthod2(str1: String, str2: String) {print("JS調用了有參數swift方法:參數為\(str1),\(str2)")//創建提示信息let alert = UIAlertController(title: str1, message: str2, preferredStyle: .Alert)//確定按鈕alert.addAction(UIAlertAction(title: "ok", style: .Default, handler: nil))//顯示提示框self.presentViewController(alert, animated: true, completion: nil)}func webView(webView: UIWebView, didFailLoadWithError error: NSError) {print(error)} }//js調用Swift方法注入 extension ViewController: UIWebViewDelegate {func webView(webView: UIWebView, shouldStartLoadWithRequest request: NSURLRequest, navigationType: UIWebViewNavigationType) -> Bool {let str = NSBundle.mainBundle().pathForResource("test", ofType: "html")let request = NSURLRequest(URL: NSURL(string: str!)!)let connecntion = NSURLConnection(request: request, delegate: self)connecntion?.start()return true}func webViewDidStartLoad(webView: UIWebView) {print("webViewDidStartLoad----")}func webViewDidFinishLoad(webView: UIWebView) {self.context = webView.valueForKeyPath("documentView.webView.mainFrame.javaScriptContext") as! JSContext//JS調用了無參數swift方法---menthod1let temp1: @convention(block) () ->() = {self.menthod1()}//forKeyedSubscript:參數為JS調用方法名self.context.setObject(unsafeBitCast(temp1, AnyObject.self), forKeyedSubscript: "test1")//JS調用了有參數swift方法---menthod2let temp2: @convention(block) () ->() = {let array = JSContext.currentArguments()//這里接到的array中的內容是JSValue類型for object in array {print("參數:" + object.toString())}self.menthod2(array[0].toString(), str2: array[1].toString())}//forKeyedSubscript:參數為JS調用方法名self.context.setObject(unsafeBitCast(temp2, AnyObject.self), forKeyedSubscript: "test2")//模型注入的方法let model = JSObjCModel()model.controller = selfmodel.jsContext = contextself.jsContext = context//這一步是將OCModel這個模型注入到JS中,JS就可以通過OCModel調用我們公暴露的方法了。self.jsContext?.setObject(model, forKeyedSubscript: "OCModel")let url = NSBundle.mainBundle().URLForResource("test", withExtension: "html")self.jsContext?.evaluateScript(try? String(contentsOfURL: url!, encoding: NSUTF8StringEncoding));self.jsContext?.exceptionHandler = {(context, exception) inprint("exception @", exception)}} }@objc protocol JavaScriptSwiftDelegate: JSExport {func callSystemCamera()func showAlert(title: String, msg: String)func callWithDict(dict: [String: AnyObject])func jsCallObjcAndObjcCallJsWithDict(dict: [String: AnyObject]) }//js調用Swift模型方法 @objc class JSObjCModel: NSObject, JavaScriptSwiftDelegate {weak var controller: UIViewController?weak var jsContext: JSContext?//JS無參調用Swift方法并返回處理結果 func callSystemCamera() {print("js call objc method: callSystemCamera");let jsFunc = self.jsContext?.objectForKeyedSubscript("jsFunc");jsFunc?.callWithArguments([]);}//JS有參調用Swift方法 func showAlert(title: String, msg: String) {print("js call objc method: showAlert, title: %@", title, " msg: %@", msg)dispatch_async(dispatch_get_main_queue()) { () -> Void inlet alert = UIAlertController(title: title, message: msg, preferredStyle: .Alert)alert.addAction(UIAlertAction(title: "ok", style: .Default, handler: nil))self.controller?.presentViewController(alert, animated: true, completion: nil)}}//JS有參調用Swift方法 func callWithDict(dict: [String : AnyObject]) {print("js call objc method: callWithDict, args: %@", dict)let alert = UIAlertController(title: "消息提示", message: "查看控制臺打印信息", preferredStyle: .Alert)alert.addAction(UIAlertAction(title: "ok", style: .Default, handler: nil))self.controller?.presentViewController(alert, animated: true, completion: nil)}//JS有參調用Swift方法并返回處理結果 func jsCallObjcAndObjcCallJsWithDict(dict: [String : AnyObject]) {print("js call objc method: jsCallObjcAndObjcCallJsWithDict, args: %@", dict)let jsParamFunc = self.jsContext?.objectForKeyedSubscript("jsParamFunc");let dict = NSDictionary(dictionary: ["age": 2, "height": 178, "name": "滿藝網"])jsParamFunc?.callWithArguments([dict])} }extension ViewController: NSURLConnectionDelegate,NSURLConnectionDataDelegate {func connection(connection: NSURLConnection, didReceiveData data: NSData) {print("didReceiveData\(data)")}func connection(connection: NSURLConnection, willSendRequest request: NSURLRequest, redirectResponse response: NSURLResponse?) -> NSURLRequest? {print("request:\(request)response:\(response)")return request}func connection(connection: NSURLConnection, didFailWithError error: NSError) {} }//MARK: - allowsAnyHTTPSCertificateForHost extension NSURLRequest {static func allowsAnyHTTPSCertificateForHost(host: String) -> Bool {return true} }
test.html
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>JSAndIos</title></head><style>.main-wrap ul {width: 100%;display: inline-block;padding-top: 20px;}.main-wrap ul li {float: left;width: 100%;height: 40px;line-height: 40px;font-size: 14px;margin-bottom: 20px;background-color: #00D000;color: #fff;text-align: center;cursor: pointer;}.main-wrap ul li:active {opacity: 0.8;}</style><body bgcolor="#dddd"><div class="main-wrap"><ul class="postAndroid"><li onclick="JS_Swift1()">不傳參數調用原生控件(常規方式)</li><li onclick="JS_Swift2()">傳參數調用原生控件(常規方式)</li><li onclick="JS_Swift3()">不傳參數調用原生控件,帶返回結果處理(模型注入)</li><li onclick="JS_Swift4()">傳參數調用原生控件(模型注入)</li><li onclick="JS_Swift5()">傳對象格式參數調用原生控件(模型注入)</li><li onclick="JS_Swift6()">傳對象格式參數調用原生控件,帶返回結果處理(模型注入)</li></ul></div><script>function Swift_JS1() {alert("Swift調用Js無參方法");}function Swift_JS2(name,msg) {alert("Swift調用Js有參方法,name:"+name+";mes:"+msg);}function JS_Swift1() {test1();}function JS_Swift2() {test2('JsCallSwift', 'Js調用Swift方法');}function JS_Swift3() {OCModel.callSystemCamera();}//js調用Swift方法,處理返回結果function jsFunc() {alert('JS調用Swift方法,無返回值結果處理');}function JS_Swift4() {OCModel.showAlertMsg('js send title', 'js send message');}function JS_Swift5() {OCModel.callWithDict({ 'name': 'testname', 'age': 10, 'height': 170 });}function JS_Swift6() {OCModel.jsCallObjcAndObjcCallJsWithDict({ 'name': 'testname', 'age': 10, 'height': 170 });}//注意哦,如果JS寫錯,可能在OC調用JS方法時,都會出錯哦。function jsParamFunc (argument) {alert("JS調用Swift方法,有返回值處理結果---name:"+argument['name'] + " age:" + argument['age']);}</script></body> </html>
好了,對于JS與Ios原生控件之間進行相互調用的主要內容就分享完畢了,DEML下載地址:鏈接: https://pan.baidu.com/s/1bpEFzaR 密碼: y5ms
到這里關于JS與Android、IOS原生控件相互之間進行調用的知識就為大家分享完畢,歡迎留言討論,相互學習。