I have an application and some events i want to keep them inside a txt file in the Downloads. i have the following piece of code but i get an exception (Permission denied). I have Android 10 Samsung S9 and i have granted all the permissions (write external storage)
val externalStorageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
val myFile = File(externalStorageDir, "mylog.txt");
if (myFile.exists()) {
try {
val fostream = FileOutputStream(myFile);
val oswriter = OutputStreamWriter(fostream);
val bwriter = BufferedWriter(oswriter);
bwriter.write("Hi James. This is a message");
bwriter.newLine();
bwriter.close();
oswriter.close();
fostream.close();
} catch (e: IOException) {
e.printStackTrace();
}
} else {
try {
myFile.createNewFile();
} catch (e: IOException) {
e.printStackTrace();
}
}
The exception i get is this
java.io.IOException: Permission denied
W: at java.io.UnixFileSystem.createFileExclusively0(Native Method)
W: at java.io.UnixFileSystem.createFileExclusively(UnixFileSystem.java:317)
W: at java.io.File.createNewFile(File.java:1008)
W: at package_name.utilities.SystemUtils$Companion.writefile(SystemUtils.kt:188)
W: at package_name.ui.activities.SplashActivity.onCreate(SplashActivity.kt:37)
W: at android.app.Activity.performCreate(Activity.java:7955)
W: at android.app.Activity.performCreate(Activity.java:7944)
W: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1307)
W: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3423)
W: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3595)
W: at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
W: at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
W: at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
W: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2147)
W: at android.os.Handler.dispatchMessage(Handler.java:107)
W: at android.os.Looper.loop(Looper.java:237)
W: at android.app.ActivityThread.main(ActivityThread.java:7811)
W: at java.lang.reflect.Method.invoke(Native Method)
W: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
W: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1076)
1) Why i cant write inside there? 2) Is there a library that can do that for me?
