Getting a String to AppWidget via GetExtras (or) Shared prefrences
I have an app widged which basically has a textview. I also have an activity which displays a textview from string created within. Now i have a button in Activity 1 which onClick will send data (string to appWidget class) I tried putExtra and getExtra methods and also Shared preferences method, im little confused to use which first!
Here are some inputs from me for more clarity. Activity1:
final String addwidget =
((TextView)findViewById(R.id.verse)).getText().toString();
Intent widgetIntent = new Intent(MyScheduledActivity.this,
MainWidget.class);
widgetIntent.putExtra("widgetVerse", addwidget);
AppWidget:
public class MainWidget extends AppWidgetProvider {
RemoteViews views;
public static String verseFromFav;
private Bundle getVerseData;
@Override
public void onReceive(Context context, Intent intent) {
getVerseData = intent.getExtras();
verseFromFav = getVerseData.getString("widgetVerse");
super.onReceive(context, intent);
}
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
final int N = appWidgetIds.length;
for (int i=0; i<N; i++) {
views = new RemoteViews(context.getPackageName(),R.layout.widget_layout);
if(verseFromFav == null){
verseFromFav = "no verse";
}
views.setTextVie开发者_运维知识库wText(R.id.widgetVerse, verseFromFav);
ComponentName thisWidget = new ComponentName( context, MainWidget.class );
AppWidgetManager.getInstance( context ).updateAppWidget( thisWidget, views );
appWidgetManager.updateAppWidget(appWidgetIds, views);
}
super.onUpdate(context, appWidgetManager, appWidgetIds);
}
}
(THE APP WIDGET SHOWS "no verse" WHICH READS NULL) Can any one help me with a basic idea on how to display the string here. please. thanks in advance.
onUpdate will ALWAYS be called (sometimes multiple times) so utilize that to fire a utility or controller class and do all the work in that class.
Thus, in your app widget the only thing you might have, all I am demonstrating is updating a string in a TextView, is stuff in the onUpdate() method.
@Override
public void onUpdate( final Context context, final AppWidgetManager appWidgetManager, final int[] appWidgetIds ) {
// Need this here to set the initial state of the app widget
final AppWidgetController _actrlr = new AppWidgetController( context );
_actrlr.updateAppWidgetUI( this );
super.onUpdate( context, appWidgetManager, appWidgetIds );
}
Then in AppWidgetController class you might have something like this...
public final void updateAppWidgetUI( final Context context ) {
final AppWidgetManager _manager = AppWidgetManager.getInstance( context );
final ComponentName _componentName = new ComponentName( context, com.your.namespace.theprovidername.class );
final int[] appWidgetIds = _manager.getAppWidgetIds( _componentName );
for ( final int i : appWidgetIds ) {
final RemoteViews _rv = new RemoteViews( context.getPackageName(), R.layout.appwidget_xml_layout_file );
if( somethingIsTrue ) {
_rv.setTextViewText( R.id.textViewThatYouWantToUpdate, "The text that you wish to display if something is TRUE" );
} else {
_rv.setTextViewText( R.id.textViewThatYouWantToUpdate, "The text that you wish to display if something is FALSE" );
}
_manager.updateAppWidget( i, _rv );
}
}
RemoteView setTextViewText()
http://developer.android.com/reference/android/widget/RemoteViews.html#setTextViewText(int, java.lang.CharSequence)
I would advise you to use sharedpreference for this. It would do you better.
SharedPreferences settings =
getSharedPreferences("MyWigdetPreferences", MODE_WORLD_READABLE);
SharedPreferences.Editor prefEditor = Settings.edit();
prefEditor.putString("widgetVerse", addwidget);
prefEditor.commit();
Then in the mainWidget activity pull it out by..
SharedPreferences settings =
getSharedPreferences("MyWigdetPreferences", MODE_WORLD_READABLE);
String verse = settings.getString("widgetVerse");
That should do it.
EDIT:
Instead of
@Override
public void onReceive(Context context, Intent intent) {
getVerseData = intent.getExtras();
verseFromFav = getVerseData.getString("widgetVerse");
super.onReceive(context, intent);
}
Try
@Override
public void onReceive(Context context, Intent intent) {
getVerseData = getIntent.getExtras();
verseFromFav = getVerseData.getString("widgetVerse");
super.onReceive(context, intent);
}
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