android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application-(in Edit Text)

Question

I got this Error and can't catch Exception. I really confused why I can't catch , Before Works.

Here I've 2 EditText I want to check if it's empty do somework. I used other methods to check is Empty but doesn't work and Exit from app.

Code:

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        ad=new AlertDialog.Builder(getApplicationContext()).create();
        ad.setTitle("خطا");

        sp=sp=getSharedPreferences("sp", Activity.MODE_PRIVATE);

        bsobh=(Button) findViewById(R.id.Bsobh);
        bzohr=(Button) findViewById(R.id.Bzohr);
        basr=(Button) findViewById(R.id.basr);
        bmaqrib=(Button) findViewById(R.id.bmaqrib);
        besha=(Button) findViewById(R.id.besha);
        brooze=(Button) findViewById(R.id.brooze);
        ok=(Button) findViewById(R.id.ok);

        etnamaz=(EditText) findViewById(R.id.ettedaderoozenamaz);
        etrooze=(EditText) findViewById(R.id.ettedadroozerooze);



    ok.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub

                    try{

                    int temp=Integer.parseInt(etnamaz.getText().toString());
                    sobh=temp;
                    zohr=temp;
                    asr=temp;
                    maqrib=temp;
                    esha=temp;

                    }
                    catch(Exception e){
                        ad.setMessage("لطفا تعداد روزهایی که نمازتان قضا شده است را وارد کتید");
                        ad.show();

                }

                    try{
                rooze=Integer.parseInt(etrooze.getText().toString());
                }
                    catch(Exception e){
                    ad.setMessage("لطفا تعداد روزهایی که روزه تان قضا شده است را وارد کتید");
                    ad.show();
                }

                inserted=true;
                update();


            }
        }); 
}

post where you initialized your edittext

Rod_Algonquin
– Rod_Algonquin

2014-07-20 02:19:25 +00:00
Commented Jul 20, 2014 at 2:19 — Rod_Algonquin
– Rod_Algonquin, Commented Jul 20, 2014 at 2:19
works when edittext is not empty.

Merciful
– Merciful

2014-07-20 02:21:43 +00:00
Commented Jul 20, 2014 at 2:21 — Merciful
– Merciful, Commented Jul 20, 2014 at 2:21

Rod_Algonquin · Accepted Answer · 2014-07-20 02:32:35Z

1

works when edittext is not empty

problem:

int temp=Integer.parseInt(etnamaz.getText().toString());

you cant parse a string to int when it is empty you will likely to get numberMismatchException.

solution:

check it first if the etnamaz or etrooze has some values before parsing it to int.

sample:

if(etnamaz.getText().length() != 0)
//if it has some values
else
//if it doesnt have value

EDIT:

instead of getting the whole application context, you need to get the activity context using the this

ad=new AlertDialog.Builder(this).create();

edited Jul 20, 2014 at 2:32

answered Jul 20, 2014 at 2:26

Rod_Algonquin

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Comments

Merciful · Accepted Answer · 2014-07-20 02:29:52Z

0

I Think we cant do this. I use

Toast t =Toast.makeText(MainActivity.this, "Please ente quantity or enter 0 if none", 5000);
t.show();

Instead of

 ad.setMessage("لطفا تعداد روزهایی که روزه تان قضا شده است را وارد کتید");
                ad.show();

and Works Correctly.

answered Jul 20, 2014 at 2:29

Merciful

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