uniapp 混合开发 js调用java代码和java调用js

太过爱你忘了你带给我的痛 2022-12-01 09:55 190阅读 0赞

参考：[uniapp原生插件开发之调用原生方法(android)][uniapp_android]

源码下载地址：[源码][Link 1]

uniapp结构  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI1NDMwNTYz_size_16_color_FFFFFF_t_70_pic_center]

plugin.js

! function(root, factory) { 
    	if (typeof exports == 'object' && typeof module != 'undefined') { 
    		module.exports = factory()
    	} else if (typeof define == 'function' && define.amd) { 
    		define(factory)
    	} else { 
    		document.addEventListener('plusready', function() { 
    			var moduleName = 'AndroidBridge';
    			root.plus[moduleName] = factory()
    		}, false);
    	}
    }(this, function() { 
    	var _BARCODE = 'AndroidBridge';
    	var plugintest = { 
    		CallAppFunc: function(num, successCallback, errorCallback) { 
    			var success = typeof successCallback !== 'function' ? null : function(args) { 
    					successCallback(args);
    				},
    				fail = typeof errorCallback !== 'function' ? null : function(code) { 
    					errorCallback(code);
    				};
    			var callbackID = plus.bridge.callbackId(success, fail);
    			return plus.bridge.exec(_BARCODE, "callAppFunc", [callbackID, num]);
    		}
    	};
    	return plugintest;
    });

index.vue

<template>
        <view class="content">
            <image class="logo" src="/static/logo.png" ></image>
            <view class="text-area">
                <text class="title">{
       {title}}</text>
            </view>
            
    		<button @click="click">调用原生代码</button>	
        </view>
    </template>
    
    <script> // 导入自己定义的插件js var AndroidBridge = require('../../common/plugin.js'); export default { data() { return { title: 'Hello', } }, onLoad() { }, methods: { click(){ AndroidBridge.CallAppFunc( "这段文字是uniapp传过来的", function(result) { uni.showToast({ title:JSON.stringify(result),icon:'none',duration:5000}); }, function(result) { uni.showToast({ title:result,icon:"none",duration:5000}); } ); } } } </script>
    
    <style> .content { display: flex; flex-direction: column; align-items: center; justify-content: center; } .logo { height: 200upx; width: 200upx; margin-top: 200upx; margin-left: auto; margin-right: auto; margin-bottom: 50upx; } .text-area { display: flex; justify-content: center; } .title { font-size: 36upx; color: #8f8f94; } </style>

Andropid

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI1NDMwNTYz_size_16_color_FFFFFF_t_70_pic_center 1]

AndroidBridge.java

package io.dcloud.simple.test;
    
    import android.app.Activity;
    import android.content.Intent;
    
    import org.json.JSONArray;
    
    import io.dcloud.common.DHInterface.IWebview;
    import io.dcloud.common.DHInterface.StandardFeature;
    import io.dcloud.common.util.JSUtil;
    import io.dcloud.simple.test.activity.TestActivity;
    
    public class AndroidBridge extends StandardFeature { 
    
        /** * @param pWebview * @param array */
        public void callAppFunc(IWebview pWebview, JSONArray array) { 
    // 获取回调ID
            String CallBackID = array.optString(0);
    // 获取参数并计算（这里模拟原生处理）
            String newstring = "你好，这个字符串来自android原生代码，您传过来的参数是:" + array.optString(1);
    // 构建回传参数
            JSONArray newArray = new JSONArray();
            newArray.put(newstring);
    // JSUtil.execCallback(IWebview pWebViewImpl,String pCallbackId,String pMessage,int pStatus,boolean pKeepCallback)
    // 参数:
    // pWebViewImpl - webview对象
    // pCallbackId - 回调方法ID
    // pMessage - 回调信息
    // pStatus - 回调code值 如：OK、ERROR
    // pKeepCallback - js层回调function是否要保存
            Activity activity = pWebview.getActivity();
            activity.startActivity(new Intent(activity, TestActivity.class));
            MSTest.showToast(activity);
            // 第一个参数是当前函数的入参，直接传入， 第二个是根据入参获取的回调id，第三个是回调的数据，是一个json数组
            JSUtil.execCallback(pWebview, CallBackID, newstring, JSUtil.OK, false);//最后一个参数为ture的时候可以长期保持function，也就可以实现Java调用js 
            /** Handler handler = new Handler(); handler.postDelayed(new Runnable() { @Override public void run() { JSUtil.execCallback(pWebview, CallBackID, System.currentTimeMillis(), JSUtil.OK, true);//true 就可以实现java长期调用js System.out.println("===========handler======="); handler.postDelayed(this, 5000); } }, 5000); */
        }
    
    
    }

需要添加  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI1NDMwNTYz_size_16_color_FFFFFF_t_70_pic_center 2]

--------------------

如何使用？  
uniapp端

import AndroidBridge from '../../utils/plugin.js'
    autoTestClick() { 
    				AndroidBridge.CallAppFunc(JSON.stringify({ 
    					"action": 3
    				}), result => { 
    					const dataJson = JSON.parse(result.replace(/\\/g, "")).data;
    					uni.navigateTo({ 
    						url: '../add-land/add-land?land=' + JSON.stringify(dataJson)
    					})
    				});
    			},

Android端  
AndroidBridge.java

package com.mingshine.farmerhelp.utils;
    
    import android.app.Activity;
    import android.os.Handler;
    
    import com.mingshine.farmerhelp.handle.AndroidBridgeHandle;
    
    import org.json.JSONArray;
    
    
    import io.dcloud.common.DHInterface.IWebview;
    import io.dcloud.common.DHInterface.StandardFeature;
    import io.dcloud.common.util.JSUtil;
    
    public class AndroidBridge extends StandardFeature { 
        private static AndroidBridge mAndroidBridge;
    
        public static AndroidBridge getInstance() { 
            return mAndroidBridge;
        }
    
        private IWebview mIWebview;
        private String mCallBackID;
    
        public void sendAction(String action) { 
            if (mIWebview != null && mCallBackID != null) { 
                JSUtil.execCallback(mIWebview, mCallBackID, action, JSUtil.OK, false);
                MSLogUtil.e("======sendAction===========");
            }
        }
    
        /** * @param pWebview * @param array */
        public void callAppFunc(final IWebview pWebview, final JSONArray array) { 
            MSLogUtil.e("======callAppFunc===========");
            final String CallBackID = array.optString(0);
            mAndroidBridge = this;
            mIWebview = pWebview;
            mCallBackID = CallBackID;
            Activity activity = pWebview.getActivity();
            AndroidBridgeHandle.handle(activity, array.optString(1));
    
        }
    
    
    }

AndroidBridgeHandle.java

package com.mingshine.farmerhelp.handle;
    
    import android.app.Activity;
    import android.content.Intent;
    
    import com.alibaba.fastjson.JSONObject;
    import com.mingshine.farmerhelp.activity.MapActivity;
    import com.mingshine.farmerhelp.utils.AndroidBridge;
    import com.mingshine.farmerhelp.utils.Constant;
    import com.mingshine.farmerhelp.utils.MSLogUtil;
    
    public class AndroidBridgeHandle { 
    
        public static void handle(Activity activity, String cmdData) { 
            JSONObject cmdDataJson = JSONObject.parseObject(cmdData);
            if (cmdDataJson.getIntValue(Constant.ACTION) == Constant.ACTION_0) { 
                Intent intent = new Intent(activity, MapActivity.class);
                intent.putExtra(Constant.ACTION, cmdDataJson.getIntValue(Constant.ACTION));
                activity.startActivity(intent);
            } else if (cmdDataJson.getIntValue(Constant.ACTION) == Constant.ACTION_2) { 
                Intent intent = new Intent(activity, MapActivity.class);
                intent.putExtra(Constant.ACTION, cmdDataJson.getIntValue(Constant.ACTION));
                intent.putExtra(Constant.DATA, cmdDataJson.getString(Constant.DATA));
                MSLogUtil.e(cmdDataJson.getString(Constant.DATA));
                activity.startActivity(intent);
                AndroidBridge.getInstance().sendAction(cmdDataJson.toJSONString());
            }else if (cmdDataJson.getIntValue(Constant.ACTION) == Constant.ACTION_3) { 
                Intent intent = new Intent(activity, MapActivity.class);
                intent.putExtra(Constant.ACTION, cmdDataJson.getIntValue(Constant.ACTION));
                activity.startActivity(intent);
            }
        }
    }

--------------------

备注：有一个简单的方法，JS调用Android代码，但是Android调用不了JS

var TestUtils = plus.android.importClass("com.mingshine.jpushh5.TestUtils");
    TestUtils.fun();

package com.mingshine.jpushh5;
    
    import android.app.Activity;
    import android.content.Intent;
    
    public class TestUtils { 
    
        public static void fun() { 
            System.out.println("=========TestUtils================");
            Activity activity = MyActivityManager.getInstance().getCurrentActivity();
            activity.startActivity(new Intent(activity, MainActivity.class));
        }
    
        public static void fun1() { 
            System.out.println("=========fun1================");
    
        }
    
    
    }

[uniapp_android]: https://www.jianshu.com/p/e152c1ae0f4a
[Link 1]: https://download.csdn.net/download/qq_25430563/12753506
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