Question: i having a little advance with Command Button

lets say i having a form with

```
label1
label2
label3

```

And one command button of course

before click the command button

```
label1.Visible = true;
label2.Visible = false;
label3.Visible = false;

```

if i click the command button

```
label1.Visible = false;
label2.Visible = true;
label3.Visible = false;

```

and then i click again

```
label1.Visible = false;
label2.Visible = false;
label3.Visible = true;

```

and repeated again, then back to first before i click the command button

i didnt have any reference on this, so i just make a duplicated command button with same position in form, and i use the visible to get the another command button to be clicked

but it looks not cool,

is there any way better than i make?

Answer: 
Change the code:

```
Uri.parse("file://" + file.getAbsolutePath()));

```

To:

```
Uri.fromFile(file)

```
I uninstalled the Gmail app and reinstalled it and everything started working for me.