I have 2 activity called Login and Main in login activity there is code block that makes this functionality that if I click back in Main activity it will close the app instead of going back to login activity but I want to handle back press and maybe with one dialog "you are going to exit the app you sure? " or something like this.

Intent intent = new Intent(LoginActivity.this, MainActivity.class);
    intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | FLAG_ACTIVITY_NEW_TASK);
    startActivity(intent);

this code block is in my login actvity

CodePudding user response：

copy and paste the below code in your onBackPressed() method in MainActivity.java.

new AlertDialog.Builder(MainActivity.this)
            .setTitle("Confirm close")
            .setMessage("Are you sure want to close app")
            .setCancelable(false)
            .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which {
                    finish();
                }
             }).setNegativeButton("No", new DialogInterface.OnClickListener() {
                  @Override
                  public void onClick(DialogInterface dialog, int which {
                   dialog.dismiss();
                 }
             }).create().show();

CodePudding user response：

You can handle in onBackPressed if user is logged in :

override fun onBackPressed() {
        if(!user.isLoggedIn()){
            val intent = Intent(this@LoginActivity, MainActivity::class.java)
            intent.flags = Intent.FLAG_ACTIVITY_CLEAR_TOP
            startActivity(intent)
            finish()
        }else{
            //Show alert
        }
    }