Added Back Button Exit Confirmation and Dangerous Permissions Request!!

app/src/main/java/com/speedyapps/keepyousafe/MainActivity.java

 package com.speedyapps.keepyousafe;
 
+import android.Manifest;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.content.pm.PackageManager;
+import android.os.Build;
 import android.support.annotation.MainThread;
+import android.support.annotation.RequiresApi;
+import android.support.v4.content.ContextCompat;
 import android.support.v7.app.AlertDialog;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
@@ -12,16 +17,23 @@ import android.telephony.SmsManager;
 import android.util.Log;
 import android.view.View;
 import android.widget.ImageButton;
+import android.widget.Toast;
+
+import java.util.ArrayList;
+import java.util.List;
 
 public class MainActivity extends AppCompatActivity {
     Intent intent;
     int choice;
     SharedPreferences firsttime;
-
+    private static final int REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS = 291;
+    int backCount=0;
+    @RequiresApi(api = Build.VERSION_CODES.M)
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
+        requestPermissionsApp();
         firsttime = this.getSharedPreferences("firsttimecheck",MODE_PRIVATE);
         SharedPreferences.Editor editor = firsttime.edit();
         String checkString = firsttime.getString("status","false");
@@ -54,6 +66,7 @@ public class MainActivity extends AppCompatActivity {
 
     }
     public void onClick(){
+            backCount=0;
             Log.i("zz",""+choice);
             switch(choice) {
                 case 0:
@@ -68,10 +81,69 @@ public class MainActivity extends AppCompatActivity {
 
     public void contact(View v)
     {
-
+        backCount=0;
         Intent i=new Intent(this,ContactSelection.class);
         startActivity(i);
 
     }
+    @Override
+    public void onBackPressed() {
+        Toast.makeText(this, "Press Back Button One More Time To Exit Application!!", Toast.LENGTH_SHORT).show();
+        if(backCount==1){
+            finish();
+        }
+        backCount=(backCount+1)%2;
+    }
+
+
+    @RequiresApi(api = Build.VERSION_CODES.M)
+    void requestPermissionsApp(){
+        List<String> permissionsNeeded = new ArrayList<String>();
+        final List<String> permissionsList = new ArrayList<String>();
+        permissionsList.clear();
+        permissionsNeeded.clear();
+        if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_CONTACTS)!= PackageManager.PERMISSION_GRANTED) {
+            permissionsList.add(Manifest.permission.READ_CONTACTS);
+            permissionsNeeded.add("Read Contacts");
+        }
+        if (ContextCompat.checkSelfPermission(MainActivity.this,Manifest.permission.SEND_SMS)!=PackageManager.PERMISSION_GRANTED) {
+            permissionsList.add(Manifest.permission.SEND_SMS);
+            permissionsList.add(Manifest.permission.RECEIVE_SMS);
+            permissionsList.add(Manifest.permission.READ_SMS);
+            permissionsNeeded.add("Send SMS");
+            permissionsNeeded.add("Receive SMS");
+            permissionsNeeded.add("Read SMS");
+        }
+        if (permissionsList.size() > 0) {
+            if (permissionsNeeded.size() > 0) {
+                String message = "You need to grant access to " + permissionsNeeded.get(0);
+                for (int i = 1; i < permissionsNeeded.size(); i++)
+                    message = message + ", " + permissionsNeeded.get(i);
+                showMessageOKCancel(message,
+                        new DialogInterface.OnClickListener() {
+                            @Override
+                            public void onClick(DialogInterface dialog, int which) {
+                                requestPermissions(permissionsList.toArray(new String[permissionsList.size()]),REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS);
+                            }
+                        });
+                return;
+            }
+            requestPermissions(permissionsList.toArray(new String[permissionsList.size()]), REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS);
+            return;
+        }
+
+      //  requestPermissionsApp();
+    }
+
+
 
+
+    private void showMessageOKCancel(String message, DialogInterface.OnClickListener okListener) {
+        new AlertDialog.Builder(MainActivity.this)
+                .setMessage(message)
+                .setPositiveButton("OK", okListener)
+                .setNegativeButton("Cancel", null)
+                .create()
+                .show();
+    }
 }

app/src/main/java/com/speedyapps/keepyousafe/confirmationScreen.java

@@ -64,10 +64,6 @@ public class confirmationScreen extends AppCompatActivity {
                     Intent main = new Intent(confirmationScreen.this,MainActivity.class);
                     startActivity(main);
                 }
-                else if(textView.getText().toString().equals("0")) {
-                    distressCall();
-                    handler2.postDelayed(this,100);
-                }
                 else
                     handler2.postDelayed(this,100);