There is a code:

import android.Manifest; import android.app.Activity; import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface; import android.content.pm.PackageManager; import android.os.Bundle; import android.os.Environment; import android.support.v4.app.ActivityCompat; import android.view.Menu; import android.view.MenuItem; import android.widget.Toast; import com.google.firebase.analytics.FirebaseAnalytics; import tanat.androidtesttask.R; import tanat.androidtesttask.errorreporter.GetLogs; import tanat.androidtesttask.utils.LoadLocalData; import tanat.androidtesttask.utils.SendEMail; public class MainActivity extends Activity { private FirebaseAnalytics mFirebaseAnalytics; public Context context; @Override public void onCreate(Bundle savedInstanceState) { setContentView(R.layout.activity_main); // Obtain the FirebaseAnalytics instance. mFirebaseAnalytics = FirebaseAnalytics.getInstance(this); context = MainActivity.this; super.onCreate(savedInstanceState); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.menu, menu); return true; } public String LOG_FILE_NAME = "logs"; @Override public boolean onOptionsItemSelected(MenuItem item) { String action = ""; int i = item.getItemId(); // if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) { if (i == R.id.save_logs) { if (isCheckPermission(1)) { saveLogs(); } } else if (i == R.id.send_logs) { if (isCheckPermission(2)) { new SendEMail(MainActivity.this).send(LOG_FILE_NAME); tanat.androidtesttask.errorreporter.Log.d("Permission granted, file sending"); } else { /// } } } else { action = "Insert a memory card"; } Toast.makeText(this, action, Toast.LENGTH_SHORT).show(); return super.onOptionsItemSelected(item); } private boolean isCheckPermission(int i) { if (i == 1) { if (ActivityCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) { // Should we show an explanation? if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)) { showMessageOKCancel("Requires write permission to save logs to file"); return false; } // No explanation needed, we can request the permission. ActivityCompat.requestPermissions(this, new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE}, PERMISSIONS_REQUEST); return false; // MY_PERMISSIONS_REQUEST is an // app-defined int constant. The callback method gets the // result of the request. } return true; } else if (i == 2) { if (ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) { // Should we show an explanation? if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.READ_EXTERNAL_STORAGE)) { showMessageOKCancel("Requires read permission to transfer file"); return false; } ActivityCompat.requestPermissions(this, new String[]{android.Manifest.permission.READ_EXTERNAL_STORAGE}, PERMISSIONS_REQUEST); return false; } return true; } return false; } private void showMessageOKCancel(String message) { new AlertDialog.Builder(MainActivity.this) .setMessage(message) .setPositiveButton("OK", listener) .setNegativeButton("Cancel", listener) .create() .show(); } final private int PERMISSIONS_REQUEST = 7; DialogInterface.OnClickListener listener = new DialogInterface.OnClickListener() { final int BUTTON_NEGATIVE = -2; final int BUTTON_POSITIVE = -1; @Override public void onClick(DialogInterface dialog, int which) { switch (which) { case BUTTON_NEGATIVE: // int which = -2 dialog.dismiss(); break; case BUTTON_POSITIVE: // int which = -1 ActivityCompat.requestPermissions( MainActivity.this, new String[]{ android.Manifest.permission.WRITE_EXTERNAL_STORAGE, android.Manifest.permission.READ_EXTERNAL_STORAGE}, PERMISSIONS_REQUEST); dialog.dismiss(); break; } } }; /* Handler handler = new Handler(){ @Override public void handleMessage(Message msg){ LoadLocalData loadSD = new LoadLocalData(MainActivity.this); loadSD.writeFileSD(LOG_FILE_NAME, GetLogs.get()); Toast.makeText(MainActivity.this, "Logs save", Toast.LENGTH_SHORT).show(); } };*/ @Override public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) { switch (requestCode) { case PERMISSIONS_REQUEST: { // If request is cancelled, the result arrays are empty. if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) { // permission was granted! if (grantResults[0] == PackageManager.PERMISSION_GRANTED) { //Toast.makeText(this, "Permission on write storage granted", Toast.LENGTH_SHORT).show(); saveLogs(); } if (grantResults[1] == PackageManager.PERMISSION_GRANTED) { Toast.makeText(this, "Permission on read storage granted.", Toast.LENGTH_SHORT).show(); } } else { // permission denied, boo! Disable the // functionality that depends on this permission. } return; } // other 'case' lines to check for other // permissions this app might request. } } //метод который сохраняет логи public void saveLogs (){ LoadLocalData loadSD = new LoadLocalData(MainActivity.this); loadSD.writeFileSD(LOG_FILE_NAME, GetLogs.get()); Toast.makeText(this, "Logs save", Toast.LENGTH_SHORT).show(); } @Override public void onDestroy() { // Log.d("Logs","Logs: " + GetLogs.get()); super.onDestroy(); } }

At the first attempt to save the logs, it asks permission to write data to the memory card, if it receives it, then RECORD the file, then immediately crash with an error:

 E/UncaughtException: java.lang.RuntimeException: Failure delivering result ResultInfo{who=@android:requestPermissions:, request=7, result=-1, data=Intent { act=android.content.pm.action.REQUEST_PERMISSIONS (has extras) }} to activity {tanat.androidtesttask/tanat.androidtesttask.activity.MainActivity}: java.lang.ArrayIndexOutOfBoundsException: length=1; index=1 at android.app.ActivityThread.deliverResults(ActivityThread.java:3699) at android.app.ActivityThread.handleSendResult(ActivityThread.java:3742) at android.app.ActivityThread.-wrap16(ActivityThread.java) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1393) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5417) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) Caused by: java.lang.ArrayIndexOutOfBoundsException: length=1; index=1 at tanat.androidtesttask.activity.MainActivity.onRequestPermissionsResult(Unknown Source) at android.app.Activity.dispatchRequestPermissionsResult(Activity.java:6553) at android.app.Activity.dispatchActivityResult(Activity.java:6432) at android.app.ActivityThread.deliverResults(ActivityThread.java:3695) at android.app.ActivityThread.handleSendResult(ActivityThread.java:3742) at android.app.ActivityThread.-wrap16(ActivityThread.java) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1393) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5417) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) E/AndroidRuntime: FATAL EXCEPTION: main Process: tanat.androidtesttask, PID: 2022 java.lang.RuntimeException: Failure delivering result ResultInfo{who=@android:requestPermissions:, request=7, result=-1, data=Intent { act=android.content.pm.action.REQUEST_PERMISSIONS (has extras) }} to activity {tanat.androidtesttask/tanat.androidtesttask.activity.MainActivity}: java.lang.ArrayIndexOutOfBoundsException: length=1; index=1 at android.app.ActivityThread.deliverResults(ActivityThread.java:3699) at android.app.ActivityThread.handleSendResult(ActivityThread.java:3742) at android.app.ActivityThread.-wrap16(ActivityThread.java) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1393) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5417) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) Caused by: java.lang.ArrayIndexOutOfBoundsException: length=1; index=1 at tanat.androidtesttask.activity.MainActivity.onRequestPermissionsResult(Unknown Source) at android.app.Activity.dispatchRequestPermissionsResult(Activity.java:6553) at android.app.Activity.dispatchActivityResult(Activity.java:6432) at android.app.ActivityThread.deliverResults(ActivityThread.java:3695) at android.app.ActivityThread.handleSendResult(ActivityThread.java:3742) at android.app.ActivityThread.-wrap16(ActivityThread.java) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1393) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5417) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

On subsequent launches (when permission has already been received) there are no problems. If you remove the method of saving data, put just toast - works (more precisely, and so it works but does not fall out with the toast). I read that the permyshen dialogue seems to be like in a separate stream, I punched through the hander to save (although it was also nonsense, then it would not work either), to no avail. Please tell me how to solve the problem?

    1 answer 1

    In general, after a lot of thought, I understood. There is such a nuance: if you give permission for one element of a group, then it works for the whole group. That is, when I gave permission to write data to a file, it was also immediately readable, so I had only 1 element in the grantResults array, and when I checked the second one, the application fell. Changed method:

     @Override public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) { if (requestCode == PERMISSIONS_REQUEST){ if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) { saveLogs(); if (sendMail) { new SendEMail(MainActivity.this).send(LOG_FILE_NAME); sendMail = false; } } } }