Android未在离子应用中请求权限 [英] Android not requesting permission in ionic app

问题描述

我正在构建允许人们发布图片和视频的应用程序，主要是尝试了解离子，cordova，android等等，但出于某种原因，每当我尝试使用cordova文件插件打开文件时，它都没有不要求用户访问存储的权限，代码失败，用户卡在加载屏幕上。
代码非常简单，他们拍摄视频，进行转码，然后将转码后的文件上传到firebase存储桶。如果我退出应用程序，请转到设置 - >应用程序 - >我的应用程序 - >权限，然后手动打开存储权限，它可以正常工作。问题是，我需要在运行时或安装时询问用户权限，但事实并非如此。这是代码..

I am building app that allows people to post pictures and videos, mainly trying to learn about ionic, cordova, android, and the like, but for some reason whenever I try to open a file using the cordova File plugin, it doesn't ask the user permission to access storage, and the code fails and the user is stuck on a loading screen. The code is pretty simple, they take a video, it gets transcoded, then the transcoded file is uploaded to a firebase storage bucket. If I quit the app, go to settings->apps->my app->permissions and then manually turn on the storage permission, it works. The problem is, I need to ask the user for permission either at run time or on install, and it doesn't. Here is the code..

this.media.captureVideo().then(file => {
  this.editor.transcodeVideo({
    fileUri: file[0].fullPath,
    outputFileType: this.editor.OutputFileType.MPEG4,
    outputFileName: 'temp_test',
    saveToLibrary: false,
    height: 800,
    width: 800,
    maintainAspectRatio: false
  }).then(fileUri => {
    let pathIndex = fileUri.lastIndexOf('/'),
        finalPath = 'file://' + fileUri.substr(0, pathIndex), 
        name = fileUri.substr(pathIndex + 1, fileUri.length);
    this.file.readAsArrayBuffer(finalPath, name).then(file => {
        //upload
    }).catch(err => { console.log(err); });
  });
});

但是，这只适用于我打开手机上的设置，转到应用程序，然后我的应用程序，然后是权限，然后手动启用存储。有没有办法在离子中申请许可？我搜索和搜索过，我能找到的所有答案都是针对相机的，或者是用Java工作的，但离子不是java。谢谢。

However, this only works if I open up the settings on my phone, go to apps, then my app, then permissions, then enable storage manually. Is there some way to request the permission in ionic? I have searched and searched and all the answers I can find are specific to camera, or work in Java, but ionic isn't java. Thank you.

推荐答案

有效 cordova-plugin-media-capture 使用 cordova-plugin-file ，所以 READ_EXTERNAL_STORAGE 权限。

Ionic为 Android权限提供原生支持：

Ionic offers native support for Android Permissions:

this.androidPermissions.hasPermission(this.androidPermissions.PERMISSION.READ_EXTERNAL_STORAGE)
        .then(status => {
          if (status.hasPermission) {
            this.captureVideo();
          } else {
            this.androidPermissions.requestPermission(this.androidPermissions.PERMISSION.READ_EXTERNAL_STORAGE)
            .then(status =>{
              if(status.hasPermission) this.captureVideo();
            });
          }
        }

希望有所帮助。

这篇关于Android未在离子应用中请求权限的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！