I am facing few problems while u开发者_如何学Pythonsing grid view
and shared preference in android.
I am using grid view
to get the image resource and pass the image resource
to next activity
to convert that to an image.
Activity A
contains: code to convert resource image to image in EditText
Activity B
contains: send image resource to Activity A
(Select image from Gridview
).
Activity A
Code: code in this link: http://pastebin.com/AzUTEFWT
Activity B
Code :code in this link: http://pastebin.com/cRp1vQan.
Please guide me in this issue.
I am able to diplay the gridview
with images.
I get force close error when i select image in gridview
Ummm, I think I have find the problem. It's here:
public void onItemClick(AdapterView parent,View arg1, int arg2, long arg3) {
// public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
// TODO Auto-generated method stub
SharedPreferences myPrefs = this.getSharedPreferences("myPrefs", MODE_WORLD_READABLE);
SharedPreferences.Editor prefsEditor = myPrefs.edit();
System.out.println("Emoji is:- " +arg2);
prefsEditor.putInt("key1", arg2);
prefsEditor.commit();
// finish();
dialog.hide();
}
private SharedPreferences getSharedPreferences(String string,
int modeWorldReadable) {
// TODO Auto-generated method stub
return null;
}
});
Your SharedPreference Object it's null, and you are treating to access to it.
private SharedPreferences getSharedPreferences(String string,
int modeWorldReadable) {
return null;
}
You need to return something, for example:
private SharedPreferences getSharedPreferences(String string,
int modeWorldReadable) {
return PreferenceManager.getDefaultSharedPreferences(context); //You need to pass an Context object, don't forget it
}
I hope that helps you.
精彩评论