You will have to have some form of default value for this to work, but here
is how I do it:
When I want to read from SharedPreferences I do this:
SharedPreference prefMgr =
PreferenceManager.getDefaultSharedPreferences(this);
m_curPage = prefMgr.getInt(getString(R.string.wgt_pref_cur_screen_key), 0);
When I want to write to it I do this:
SharedPreference prefMgr =
PreferenceManager.getDefaultSharedPreferences(this);
Editor editor = m_prefMgr.edit();
editor.putInt(this.getString(R.string.wgt_pref_cur_screen_key), m_curPage);
editor.commit();
You don't actually pass an object. SharedPreferences essentially abstracts
out reading to and writing from a file....
Thanks,
Justin
----------------------------------------------------------------------
There are only 10 types of people in the world...
Those who know binary and those who don't.
----------------------------------------------------------------------
On Thu, Nov 19, 2009 at 12:41 AM, Susan <ska...@gmail.com> wrote:
> Justin, thanks. But doesn't that still leave me with the same problem?
> IE, if WidgetConfiguration.java creates the SharedPreferences objet,
> how does it pass that object back to the code running in Widget.java?
>
> On Nov 19, 1:16 am, Justin Anderson <janderson....@gmail.com> wrote:
> > You could use SharedPreferences... I have a Widget that displays
> multiple
> > "pages" of info to the user. I use the SharedPreferences class to store
> > what page I am currently displaying, so that when the Widget is updated,
> it
> > knows which page to update.
> >
> > ----------------------------------------------------------------------
> > There are only 10 types of people in the world...
> > Those who know binary and those who don't.
> > ----------------------------------------------------------------------
> >
> > On Wed, Nov 18, 2009 at 11:32 PM, Susan <ska...@gmail.com> wrote:
> > > I have a widget whose appearance will depend on information gained
> > > from the user in the configuration activity. However, I'm uncertain
> > > how (and in what section of code) to act on the information gained
> > > from the user in the config.
> >
> > > Here is the target functionality from the user's perspective:
> >
> > > When the user creates the widget, the config activity prompts for a
> > > string (with an EditText). The user types it in and presses the submit
> > > button. The config activity goes away and the widget appears on the
> > > homescreen displaying the text the user entered. When the user touches
> > > the widget, the browser is opened and goes to a particular URL that is
> > > determined in part by the string the user entered.
> >
> > > Here is what I have implemented so far:
> >
> > > The config activity lets the user enter data and happily displays it
> > > to me as a Toast message. Then the config goes away as desired and the
> > > widget appears with the default widget icon. If you touch the widget,
> > > it goes to a hardcoded URL. (code below)
> >
> > > My question:
> >
> > > How do I "connect" the info from the config activity with the code
> > > that displays the widget itself? If I put the user's string in a
> > > putExtra of the intent sent in setResult(), where do I write the code
> > > to retrieve that extra? It seems like it ought to put it somewhere in
> > > the AppWidgetProvider code, but where? (Or is there a better way to do
> > > it?)
> >
> > > Here are the relevant portions of my code:
> >
> > > ------------------------
> > > widget.java:
> > > ------------------------
> > > public class Widget extends AppWidgetProvider
> > > {
> > > public void onReceive(Context context, Intent intent)
> > > {
> > > String action = intent.getAction();
> > > if (AppWidgetManager.ACTION_APPWIDGET_UPDATE.equals(action))
> > > {
> > > //Toast.makeText(context, "onReceive()",
> > > Toast.LENGTH_SHORT).show();
> > > RemoteViews views = new RemoteViews(context.getPackageName
> > > (), R.layout.widget);
> >
> > > Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse
> > > ("http://www.cnn.com";));
> > > i.addCategory(Intent.CATEGORY_BROWSABLE);
> > > i.setComponent(new ComponentName("com.android.browser",
> > > "com.android.browser.BrowserActivity"));
> > > PendingIntent pendingIntent = PendingIntent.getActivity
> > > (context, 0, i, 0);
> > > views.setOnClickPendingIntent(R.id.Widget, pendingIntent);
> >
> > > AppWidgetManager.getInstance(context).updateAppWidget
> > > (intent.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS),
> > > views);
> > > }
> > > }
> > > }
> > > // end of widget.java
> >
> > > ------------------------------------------------
> > > WidgetConfiguration.java
> > > ------------------------------------------------
> > > public class WidgetConfiguration extends Activity {
> >
> > > EditText myEditText;
> >
> > > @Override
> > > public void onCreate(Bundle icicle) {
> > > super.onCreate(icicle);
> >
> > > Intent intent = new Intent();
> > > intent = getIntent();
> > > Bundle extras = intent.getExtras();
> > > int appWidgetId = extras.getInt
> > > (AppWidgetManager.EXTRA_APPWIDGET_ID);
> > > setResult(RESULT_CANCELED);
> >
> > > // Set the view layout resource to use.
> > > setContentView(R.layout.config);
> >
> > > // Find the EditText
> > > myEditText = (EditText)findViewById(R.id.txt_url);
> >
> > > View.OnClickListener mOnClickListener = new
> View.OnClickListener
> > > () {
> > > public void onClick(View v) {
> >
> > > Intent intent = new Intent();
> > > intent = getIntent();
> > > setResult(RESULT_OK, intent);
> > > Toast.makeText(getBaseContext(),
> > > myEditText.getText(),
> > > Toast.LENGTH_SHORT).show();
> > > finish();
> > > }
> > > };
> >
> > > // Bind the action for the submit button.
> > > findViewById(R.id.btn_urlSubmit).setOnClickListener
> > > (mOnClickListener);
> >
> > > // If they gave us an intent without the widget id, just bail.
> > > if (appWidgetId == AppWidgetManager.INVALID_APPWIDGET_ID) {
> > > finish();
> > > }
> > > }
> > > }
> > > //end of WidgetConfiguration.java
> >
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