Question

Well basicly I have a textview and when the application is created it sets a string as the textviews text not hard, but I get a force close error when I run the app on my phone.

TextView sdcard=(TextView)findViewById(R.id.sd_textview);
sdcard.setText(R.string.not_mounted);

Then I have a error on a togglebutton also

ToggleButton silent=(ToggleButton)findViewById(R.id.silentbutton);
silent.setChecked(false);

And I have errors for all my other buttons/textviews can anyone help, please?!

EDIT:
I cant post pics because I am a new member, 🙁
Link to imgshack http://imageshack.us/photo/my-images/849/unledggp.png/

If code for the whole textview snippet.

if     (android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_UNMOUNTED)) {

TextView sdcard=(TextView)findViewById(R.id.sd_textview);
sdcard.setText(R.string.not_mounted);

}

OnCreate Function

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

checkSD();
checkRing();
checkWifi();
checkBt();

}

Answer 1

Look for all instances of sd_textview and make sure the one that you’re trying to reference is a TextView. If you want more clarity you can debug your code and see what object is actually being returned by not casting into a TextView:

View sdcard = findViewById(R.id.sd_textview); //debug this
//you can also log the View object to see the type 
Log.d("Test", "" + sdcard);