Cordova 正在运行时请求权限

在Android Marshmallow中，用户在应用程序运行时向应用程序授予权限，而不是在安装应用程序时，因此如何在ionic中的运行时检查和授予权限？

您可以使用检查和请求Android运行时权限：

检查权限：

cordova.plugins.diagnostic.getPermissionAuthorizationStatus(function(status){
    switch(status){
        case cordova.plugins.diagnostic.runtimePermissionStatus.GRANTED:
            console.log("Permission granted to use the camera");
            break;
        case cordova.plugins.diagnostic.runtimePermissionStatus.NOT_REQUESTED:
            console.log("Permission to use the camera has not been requested yet");
            break;
        case cordova.plugins.diagnostic.runtimePermissionStatus.DENIED:
            console.log("Permission denied to use the camera - ask again?");
            break;
        case cordova.plugins.diagnostic.runtimePermissionStatus.DENIED_ALWAYS:
            console.log("Permission permanently denied to use the camera - guess we won't be using it then!");
            break;
    }
}, function(error){
    console.error("The following error occurred: "+error);
}, cordova.plugins.diagnostic.runtimePermission.CAMERA);

cordova.plugins.diagnostic.requestRuntimePermission(function(status){
    switch(status){
        case cordova.plugins.diagnostic.runtimePermissionStatus.GRANTED:
            console.log("Permission granted to use the camera");
            break;
        case cordova.plugins.diagnostic.runtimePermissionStatus.NOT_REQUESTED:
            console.log("Permission to use the camera has not been requested yet");
            break;
        case cordova.plugins.diagnostic.runtimePermissionStatus.DENIED:
            console.log("Permission denied to use the camera - ask again?");
            break;
        case cordova.plugins.diagnostic.runtimePermissionStatus.DENIED_ALWAYS:
            console.log("Permission permanently denied to use the camera - guess we won't be using it then!");
            break;
    }
}, function(error){
    console.error("The following error occurred: "+error);
}, cordova.plugins.diagnostic.runtimePermission.CAMERA);

请求许可：

cordova.plugins.diagnostic.getPermissionAuthorizationStatus(function(status){
    switch(status){
        case cordova.plugins.diagnostic.runtimePermissionStatus.GRANTED:
            console.log("Permission granted to use the camera");
            break;
        case cordova.plugins.diagnostic.runtimePermissionStatus.NOT_REQUESTED:
            console.log("Permission to use the camera has not been requested yet");
            break;
        case cordova.plugins.diagnostic.runtimePermissionStatus.DENIED:
            console.log("Permission denied to use the camera - ask again?");
            break;
        case cordova.plugins.diagnostic.runtimePermissionStatus.DENIED_ALWAYS:
            console.log("Permission permanently denied to use the camera - guess we won't be using it then!");
            break;
    }
}, function(error){
    console.error("The following error occurred: "+error);
}, cordova.plugins.diagnostic.runtimePermission.CAMERA);

cordova.plugins.diagnostic.requestRuntimePermission(function(status){
    switch(status){
        case cordova.plugins.diagnostic.runtimePermissionStatus.GRANTED:
            console.log("Permission granted to use the camera");
            break;
        case cordova.plugins.diagnostic.runtimePermissionStatus.NOT_REQUESTED:
            console.log("Permission to use the camera has not been requested yet");
            break;
        case cordova.plugins.diagnostic.runtimePermissionStatus.DENIED:
            console.log("Permission denied to use the camera - ask again?");
            break;
        case cordova.plugins.diagnostic.runtimePermissionStatus.DENIED_ALWAYS:
            console.log("Permission permanently denied to use the camera - guess we won't be using it then!");
            break;
    }
}, function(error){
    console.error("The following error occurred: "+error);
}, cordova.plugins.diagnostic.runtimePermission.CAMERA);

解决方案是唯一对我有效的方法。请注意，此插件基于AndroidX，因此您必须安装以下文件：

ionic cordova plugin add cordova-plugin-androidx
ionic cordova plugin add cordova-plugin-androidx-adapter

然后您可以安装诊断插件文件：

ionic cordova plugin add cordova.plugins.diagnostic
npm install @ionic-native/diagnostic

还要记住将诊断添加到app.module上的提供者列表中：

import { Diagnostic } from '@ionic-native/diagnostic/ngx';
...
providers: [..., Diagnostic]

最后，诊断插件的API在Dave的回答后发生了变化，因此这是当前的工作代码：

检查是否授予权限：

this.diagnostic.getPermissionAuthorizationStatus(this.diagnostic.permission.CAMERA)
    .then((status) => {
        switch(status){
            case this.diagnostic.permissionStatus.GRANTED:
                console.log("Permission granted to use the camera");
                break;
            case this.diagnostic.permissionStatus.NOT_REQUESTED:
                console.log("Permission to use the camera has not been requested yet");
                break;
            case this.diagnostic.permissionStatus.DENIED:
                console.log("Permission denied to use the camera - ask again?");
                break;
            case this.diagnostic.permissionStatus.DENIED_ALWAYS:
                console.log("Permission permanently denied to use the camera - guess we won't be using it then!");
                break;
        }
    })
    .catch((error) => {
        console.error("The following error occurred: "+error);
    });

this.diagnostic.requestRuntimePermission(this.diagnostic.permission.CAMERA)
    .then((status) => {
        switch(status){
            case this.diagnostic.permissionStatus.GRANTED:
                console.log("Permission granted to use the camera");
                break;
            case this.diagnostic.permissionStatus.NOT_REQUESTED:
                console.log("Permission to use the camera has not been requested yet");
                break;
            case this.diagnostic.permissionStatus.DENIED:
                console.log("Permission denied to use the camera - ask again?");
                break;
            case this.diagnostic.permissionStatus.DENIED_ALWAYS:
                console.log("Permission permanently denied to use the camera - guess we won't be using it then!");
                break;
        }
    })
    .catch((error) => {
        console.error("The following error occurred: "+error);
    });

请求权限：

this.diagnostic.getPermissionAuthorizationStatus(this.diagnostic.permission.CAMERA)
    .then((status) => {
        switch(status){
            case this.diagnostic.permissionStatus.GRANTED:
                console.log("Permission granted to use the camera");
                break;
            case this.diagnostic.permissionStatus.NOT_REQUESTED:
                console.log("Permission to use the camera has not been requested yet");
                break;
            case this.diagnostic.permissionStatus.DENIED:
                console.log("Permission denied to use the camera - ask again?");
                break;
            case this.diagnostic.permissionStatus.DENIED_ALWAYS:
                console.log("Permission permanently denied to use the camera - guess we won't be using it then!");
                break;
        }
    })
    .catch((error) => {
        console.error("The following error occurred: "+error);
    });

this.diagnostic.requestRuntimePermission(this.diagnostic.permission.CAMERA)
    .then((status) => {
        switch(status){
            case this.diagnostic.permissionStatus.GRANTED:
                console.log("Permission granted to use the camera");
                break;
            case this.diagnostic.permissionStatus.NOT_REQUESTED:
                console.log("Permission to use the camera has not been requested yet");
                break;
            case this.diagnostic.permissionStatus.DENIED:
                console.log("Permission denied to use the camera - ask again?");
                break;
            case this.diagnostic.permissionStatus.DENIED_ALWAYS:
                console.log("Permission permanently denied to use the camera - guess we won't be using it then!");
                break;
        }
    })
    .catch((error) => {
        console.error("The following error occurred: "+error);
    });

---

嗨，Dave——这里的成功回调只需要一个状态参数。如果我想对成功采取其他措施，比如保存文件，该怎么办？在回调函数中似乎是一个自然的地方，因为您希望在保存之前等待权限得到确认，但这不是一个选项。我应该将状态存储在全局参数（YK）中吗？有更好的方法吗？Json数组

['CAMERA']

而不是

cordova.plugins.diagnostic.runtimePermission.CAMERA

，否则它会失败。？？？当然

cordova.plugins.diagnostic.runtimePermission.CAMERA===cordova.plugins.diagnostic.runtimePermission['CAMERA']

但在Javascript中，这两种形式在编程上是完全相同的：@JamesN它是一个本机插件，不能与作为HTML5包装器的Ionic View一起工作。要进行调试，请从Cordova项目构建本机Android应用程序，然后将Chrome DevTools连接到设备上的远程Webview。