科尔多瓦插件权限在我的应用程序中不起作用

Question

朋友们提前致谢。这是我的第一个问题。 我不是 Cordova 开发人员，但由于某些情况，我必须在 Cordova 应用程序上工作。 我的应用程序之前针对的是 Android API 级别 22，现在我针对的是 API 级别 26。

从上面的 API 级别，22 个机器人需要运行时权限，我正在尝试在我的应用程序中实现权限代码。

我需要将 pdf 文件从我的应用程序复制到设备内存。我已经编写了复制文件的代码，该代码在 android API 级别 22 之前可以正常工作，但在 android API 级别 23 以上时无法正常工作。

为此，我需要在我的 Cordova 应用中添加权限。

我已使用以下插件获得权限 cordova plugin add cordova-plugin-permission

以下是我的 index.js 代码

var app = {
    // Application Constructor
        initialize: function() {
        this.bindEvents();
    },
    // Bind Event Listeners
    //
    // Bind any events that are required on startup. Common events are:
    // 'load', 'deviceready', 'offline', and 'online'.
        bindEvents: function() {
            document.addEventListener('deviceready', this.onDeviceReady, false);
        },
     //deviceready Event Handler
     //
     // The scope of 'this' is the event. In order to call the     'receivedEvent'
    // function, we must explicitly call 'app.receivedEvent(...);'
        onDeviceReady: function() {
           app.receivedEvent('deviceready');
		
         // **my permission code**
        var Permission = cordova.plugins.Permission

        var permission = 'android.permission.WRITE_EXTERNAL_STORAGE'

        Permission.has(permission,function(results){
            if(!results[permission])
            {
                Permission.request(permission,function(results){
                    if(results[permission]){
                          alert("permission granted");
                   }
                },alert("permission failed"))
                alert("permission granted failed");
            }
        }, alert("permission failed"))

              
                   asset2sd.copyDir({
                   asset_directory: "www/pdf",
                   destination_directory: "crisispdf",
                 },
                 function () {
                           //alert('success');
                 },
                 function () {
                     //alert('fail');
                 }
                 );  

        
	},
    // Update DOM on a Received Event
    receivedEvent: function(id) {
        var parentElement = document.getElementById(id);
        var listeningElement = parentElement.querySelector('.listening');
        var receivedElement = parentElement.querySelector('.received');

       

        console.log('Received Event: ' + id);
    }
     };

     app.initialize();

以下是我的 config.xml

<?xml version='1.0' encoding='utf-8'?>
<widget id="com.atlascopco.crisis" version="1.0.13" xmlns="http://www.w3.org/ns/widgets" xmlns:android="http://schemas.android.com/apk/res/android" xmlns:cdv="http://cordova.apache.org/ns/1.0">
    <name>Crisis Management</name>
    <description>
        Crisis Management 
    </description>
    <author email="dev@cordova.apache.org" href="http://cordova.io">
        Atlas Copco Team
    </author>
    <content src="index.html" />
    <access origin="*" />
    <access launch-external="yes" origin="mailto:*" />
    <access launch-external="yes" origin="tel:*" />
    <plugin name="cordova-plugin-inappbrowser" spec="^1.7.1" />
    <plugin name="cordova-plugin-wkwebview-engine" spec="^1.1.3" />
    <plugin name="cordova-plugin-permission" spec="^0.1.0" />
    <platform name="android">
        <uses-permission android:maxSdkVersion="26" android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
        <uses-permission android:maxSdkVersion="26" android:name="android.permission.READ_EXTERNAL_STORAGE" />
    </platform>
    <engine name="android" spec="^7.1.4" />
</widget>

以下是我在创建调试 apk 后从 android 平台形成的 Android Manifest 文件

<?xml version='1.0' encoding='utf-8'?>
<manifest android:hardwareAccelerated="true" android:versionCode="10013" android:versionName="1.0.13" package="com.atlascopco.crisis" xmlns:android="http://schemas.android.com/apk/res/android">
    <supports-screens android:anyDensity="true" android:largeScreens="true" android:normalScreens="true" android:resizeable="true" android:smallScreens="true" android:xlargeScreens="true" />
    <uses-permission android:name="android.permission.INTERNET" />
    <application android:hardwareAccelerated="true" android:icon="@mipmap/icon" android:label="@string/app_name" android:supportsRtl="true">
        <activity android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale" android:label="@string/activity_name" android:launchMode="singleTop" android:name="MainActivity" android:theme="@android:style/Theme.DeviceDefault.NoActionBar" android:windowSoftInputMode="adjustResize">
            <intent-filter android:label="@string/launcher_name">
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
    <uses-sdk android:minSdkVersion="19" android:targetSdkVersion="27" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
</manifest>

请让我知道在 chrome 浏览器中检查时我的代码有什么问题，它显示以下结果，并且在应用程序启动时没有弹出权限enter image description here

Answer 1

试试这个代码

var app = {
    // Application Constructor
        initialize: function() {
        this.bindEvents();
    },
    // Bind Event Listeners
    //
    // Bind any events that are required on startup. Common events are:
    // 'load', 'deviceready', 'offline', and 'online'.
        bindEvents: function() {
            document.addEventListener('deviceready', this.onDeviceReady, false);
        },
     //deviceready Event Handler
     //
     // The scope of 'this' is the event. In order to call the     'receivedEvent'
    // function, we must explicitly call 'app.receivedEvent(...);'
        onDeviceReady: function() {
           app.receivedEvent('deviceready');
		
         // **my permission code**
        var permission = cordova.plugins.permissions;

        permission.hasPermission(permission.WRITE_EXTERNAL_STORAGE,function(results){
            if(!results[permission])
            {
                permission.requestPermission(permission.WRITE_EXTERNAL_STORAGE,function(results){
                    if(results[permission]){
                          alert("permission granted");
                   }
                },alert("permission failed"))
                alert("permission granted failed");
            }
        }, alert("permission failed"))

              
                   asset2sd.copyDir({
                   asset_directory: "www/pdf",
                   destination_directory: "crisispdf",
                 },
                 function () {
                           //alert('success');
                 },
                 function () {
                     //alert('fail');
                 }
                 );  

        
	},
    // Update DOM on a Received Event
    receivedEvent: function(id) {
        var parentElement = document.getElementById(id);
        var listeningElement = parentElement.querySelector('.listening');
        var receivedElement = parentElement.querySelector('.received');

       

        console.log('Received Event: ' + id);
    }
     };

     app.initialize();