TextView.setText() doesn't work

Question

I've got an int i

int i = 5;

then I convert it into String str

String str = Integer.toString(i);

then I try to set String str to TextView tvEx

tvEx.setText(str);

And then my program break down. Can you help me?

ExActivity.java ----------

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (data == null) {return;}
    Log.d(TAG, "1");
    int i = data.getIntExtra("Days", days);
    Log.d(TAG, "2");
    String str = Integer.toString(i);
    Log.d(TAG, "3");
    tvD.setText(str);
    Log.d(TAG, "4");
}

Logcat said -----------

D/Days﹕ 1

D/Days﹕ 2

D/Days﹕ 3

Virtual device -----------

Sorry, Days has stopped

What does "break down" mean exactly? If you have an exception, please post the stacktrace from logcat. — laalto, Mar 08 '14 at 10:46
Check by this if(data!=null) { int i = data.getIntExtra("Days", days);} — Piyush, Mar 08 '14 at 11:45

martynas · Accepted Answer · 2014-03-08T12:34:35.013

2

Do yourself a favor and specify the exact problem you are having and update the question with an output of your program after it fails.

Try this:

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (data != null && data.getExtras().containsKey("Days")) {
        int i = data.getExtras().getIntExtra("Days", days);
        TextView tvD = (TextView) findViewById(R.id.MA_TvDays);
        if (tvD != null) tvD.setText("" + i);
    }
}

edited Mar 08 '14 at 12:34

answered Mar 08 '14 at 10:43

martynas

12,120
3
55
60

1

This seems to be the solution to some other problem. – laalto Mar 08 '14 at 10:51
@laalto it's a solution for shortening the code, but not an answer. – Yaroslav Mytkalyk Mar 08 '14 at 10:54
Please check if your extras has the key: if (extras.containsKey("Days")) {}. Also make sure you initialize tvEx. – martynas Mar 08 '14 at 11:44
What does the logcat say? Also, I have updated the code. Try now? – martynas Mar 08 '14 at 11:52
IDEA underline `containsKey` with red. It said: `Cannot resolve metod 'containsKey(java.lang.String)'` – Sergius Mar 08 '14 at 12:03
Whoops - sorry, not using an IDE at the moment. Just writing from the top of my head. I updated the code to get the extras. Try now? – martynas Mar 08 '14 at 12:04
@martynas My program doesn't fall now, but `tvD` shows "0" – Sergius Mar 08 '14 at 12:10
@martynas I add the log check in your code after `int i ...` and the logs show that `i = 1234` – Sergius Mar 08 '14 at 12:13
@SergaRUS it means tvD is not initialized. Initilize the variable and everything will work :) – martynas Mar 08 '14 at 12:14
Like this `TextView tvD = (TextView) findViewById(R.id.MA_TvDays);` @martynas? – Sergius Mar 08 '14 at 12:16
`.getIntExtra` is unserlined with red @martynas – Sergius Mar 08 '14 at 13:15
It said `cannot reslove metod 'getIntExtras' (java.lang.Strings, int)` – Sergius Mar 08 '14 at 13:17
I'VE DONE IT!!! @martynas in your code I've just edit `.getIntExtra("Days", days);` to `.getInt("Days", days);` and everything works now! – Sergius Mar 13 '14 at 06:51
@SergaRUS congratulations! I suggest you use Eclipse - should have taken you like 5 minutes :) – martynas Mar 13 '14 at 07:58

TextView.setText() doesn't work

1 Answers1