Read .txt field data from /storage/emulated/ path in android 11-CodePudding

I want to read data from .txt file from /storage/emulated application-specific path. I have written data successfully in same file but not able to read it.

Code to write data in txt file.

val writer: FileOutputStream = openFileOutput(file.absolutePath, MODE_PRIVATE)
writer.write(str1.toByteArray())
writer.flush()
writer.close()

Trying to read data from same file.

val text = StringBuilder()
val br = BufferedReader(FileReader(file))
var line: String?
while (br.readLine().also { line = it } != null) {
 text.append(line)
 text.append('\n')
 }
 br.close()

line returning null value.

CodePudding user response：

I want to read data from .txt file from /storage/emulated application-specific path. I have written data successfully in same file but not able to read it.

You did not write to a location in a /storage/emulated directory. You used openFileOutput(). That writes to a different location. To read from that location, use openFileInput(), the corresponding method on Context. Be sure to use the same filename that you passed to openFileOutput().

CodePudding user response：

Try adding android:requestLegacyExternalStorage="true" to your manifest.

Or change it to comply to Android 11's new scoped storage system. See https://developer.android.com/about/versions/11/privacy/storage

CodePudding user response：

Read string from .txt file

Kotlin

val reader = FileReader(path)
val txt = reader.readText()
reader.close()