felipecaparelli commented on issue #348:
URL: 
https://github.com/apache/cordova-plugin-file/issues/348#issuecomment-687665048


   I am just trying to use it (with Ionic) to get files from any Android 
folders (WhatsApp, Documents, etc), but it always returns null, even using 
other methods like readAsText, readAsDataURL or the readAsArrayBuffer. Follow 
my config:
   
   **Ionic:**
   
      Ionic CLI                     : 5.4.15
      Ionic Framework               : @ionic/angular 5.2.2
      @angular-devkit/build-angular : 0.901.9
      @angular-devkit/schematics    : 9.1.9
      @angular/cli                  : 9.1.9
      @ionic/angular-toolkit        : 2.2.0
   
   **Cordova:**
   
      Cordova CLI       : 9.0.0 ([email protected])
      Cordova Platforms : android 8.1.0
      Cordova Plugins   : 
       cordova-plugin-file: 6.0.2
       cordova-plugin-file-opener2: 3.0.4
       cordova-plugin-filechooser: 1.2.0
       cordova-plugin-filepath": 1.5.8
   
   
   The code that fails is:
   
                async openFiles() {
                    this.fileChooser
                        .open()
                       .then(contentPath => {
                         const that = this;
                          this.filePath.resolveNativePath(contentPath).then(uri 
=> {
                          const lastSeparator = uri.lastIndexOf('/');
                           const fileName = uri.substr(lastSeparator + 1);
                           const sysPath = uri.substr(0, lastSeparator);
                           that.file.readAsArrayBuffer(sysPath, 
fileName).then(buff => {
                                        // buff is always null
                                        const blob = new Blob([new 
Uint8Array(buff)], { type: 'image/jpg' });
                            });
                          });
                        });
                }


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