fragment w manifest dodany, ale dalej nie działa, coś jest nie tak z kodem w javie, który ma prosić o pozwolenie
import android.Manifest;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.Scanner;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if(ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE)){}
else
{
ActivityCompat.requestPermissions(MainActivity.this,new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},5);
}
doSth(this);
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
switch(requestCode)
{
case 5:
if(grantResults.length>0 && grantResults[0]== PackageManager.PERMISSION_GRANTED)
{
}
else
{
Toast.makeText(getApplicationContext(),"jesli nie zostanie wyrazona zgoda na dostep do pamieci nie bedzie mozliwosci zapisania pliku", Toast.LENGTH_LONG).show();
}
}
}
public void doSth(Context context)
{
final String FILE_NAME="myfile.txt";
try{
FileOutputStream fOut = openFileOutput(FILE_NAME,MODE_PRIVATE);
String str = "data a aaaa";
fOut.write(str.getBytes());
fOut.close();
FileInputStream fIn = openFileInput(FILE_NAME);
System.out.println(fIn.read());
}catch(Exception e){System.out.println(e.toString());
}
}
}