使用Cordova在Android Studio中直接从SD卡读取文本文件

Question

I am working on a project which has a task to read a text file from the sdcard. The file path is given on the code. I tried using this code but no output.

 var path = "Download/myfile.txt";

window.resolveLocalFileSystemURL(path, success, fail);

function fail(e) {
      console.error(e);
}

function success(fileEntry) {
   fileEntry.file(function(file) {
           var reader = new FileReader();
           reader.onloadend = function(e) {
           var content = this.result;
           console.log(content);
       };
       reader.readAsText(file); // or the way you want to read it
   });
}

Answer 1

replace

 var path = "Download/myfile.txt";

with

var path = cordova.file.externalRootDirectory+"/Download/myfile.txt;

and make sure <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> is there in Android Manifest file.