I need to get the specific appWidgetId in AppWidgetProvider, not a bundle of appWidgetIds[] but the specific id which user clicked.
I could get it in its configure activity, using the "intent.getExtra().getInt(AppWidgetManager.APP_WIDGET_ID)" says like 504.
But it is so different in AppWidgetProvider, I will be appreciate it if anyone give me a hand.thanks in advance.
public class WidgetBox extends AppWidgetProvider implements Widget {
private int _widgetId = ?; // not appWidgetIds[]
}
You will get an array of Ids when the widget life cycle methods are called.
You can simply iterate through the provided Ids like this:
#Override
public void onUpdate(final Context context, final AppWidgetManager appWidgetManager, final int[] appWidgetIds) {
final int n = appWidgetIds.length;
for( int i = 0; i < n; i++ ) {
final int appWidgetId = appWidgetIds[i];
// some logic here
}
}
if you need to invoke some action, this is done using a pending intent during configuration (or a later update):
final RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget);
final Intent defineIntent = new Intent(context, YourTargetActivity.class);
defineIntent.addCategory(Intent.CATEGORY_LAUNCHER);
final PendingIntent pendingIntent = PendingIntent.getActivity(context, 0 /* no request code */, defineIntent, 0);
views.setOnClickPendingIntent(R.id.view_id, pendingIntent);
Related
I want to make a widget app that is able to dial a number and user can set the number when he first drag and drop widget to home screen using widget configuration.But when the phone restarts widget uses default number again. I decide to save the entered phonenumber to Shared Preferences to save and load user's phone number but eclipse says that using getSharedPreferences is not allowed in onUpdate.Is there another way to perform it?
What should I do?
my code:
public class Main extends AppWidgetProvider {
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
// TODO Auto-generated method stub
super.onUpdate(context, appWidgetManager, appWidgetIds);
for(int i=0 ; i<appWidgetIds.length ; i++)
{
SharedPreferences details = getSharedPreferences("OPERATOR", 0);
int appWidgetId = appWidgetIds[i];
String phNumber = "5554574";
Intent intent = new Intent(Intent.ACTION_CALL);
intent.setData(Uri.parse("tel:"+(phNumber)));
PendingIntent pending = PendingIntent.getActivity(context, 0, intent, 0);
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.main);
views.setOnClickPendingIntent(R.id.button1, pending);
appWidgetManager.updateAppWidget(appWidgetId, views);
}
}
}
Use:
SharedPreferences details = context.getSharedPreferences("OPERATOR", 0);
SharedPreferences has to be acquired from the context. onUpdate(...) provides you the context.
Your changed code should look like this:
public class Main extends AppWidgetProvider {
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
// TODO Auto-generated method stub
super.onUpdate(context, appWidgetManager, appWidgetIds);
for(int i=0 ; i<appWidgetIds.length ; i++)
{
SharedPreferences details = context.getSharedPreferences("OPERATOR", 0);
int appWidgetId = appWidgetIds[i];
String phNumber = "5554574";
Intent intent = new Intent(Intent.ACTION_CALL);
intent.setData(Uri.parse("tel:"+(phNumber)));
PendingIntent pending = PendingIntent.getActivity(context, 0, intent, 0);
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.main);
views.setOnClickPendingIntent(R.id.button1, pending);
appWidgetManager.updateAppWidget(appWidgetId, views);
}
}
}
Please try it.
AppWidgetProvider is not a Context. But you can often create a static method to reach the context of an application, then do this
In Android Manifest file declare following
<application android:name="com.example.MyApplication">
</application>
then write the class
public class MyApplication extends Application{
private static Context context;
public void onCreate(){
super.onCreate();
MyApplication.context = getApplicationContext();
}
public static Context getAppContext() {
return MyApplication.context;
}
}
Then you can use
SharedPreferences details = MyApplication.getAppContext().getSharedPreferences("OPERATOR", 0);
I haven't worked with widgets yet so can't guarantee this solution but hope it work!
I am having some trouble sending data(strings) from my activity to my appWidgetProvide class.
I have a method called updateWidget. This gets called by the widget configure activity when the widget first gets placed in the home screen .This method is also called by the onReceive method when it receives data from one of my activities when the user enters data into that activity.
Here is my problem : the widget get placed in the home screen with all the data in the right place. But when my activity sends data the onReceive (using intents and extras) the data does not come through.I just get a empty string on the extras.getString .
I have used intents to send data between activities before , do I need to do something different when I send data to a widget provide class? Or am I just being stupid and missing something obvious ?
I have attached (what I think are the) relevant bits of code. Let me know if you need any clarification or any more of the code.
Thanks for taking the time to read this and for any help that you can give,
Cheers Rakshak
the onListItemClick in the widget configure class.
#Override
protected void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
Cursor note = mDbHelper.fetchNote(id);
startManagingCursor(note);
String title = note.getString(note.getColumnIndexOrThrow(NotesDbAdapter.KEY_TITLE));
String text = note.getString(note.getColumnIndexOrThrow(NotesDbAdapter.KEY_BODY));
loadData(title);
Intent resultValue = new Intent();
resultValue.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, mAppWidgetId);
setResult(RESULT_OK,resultValue);
finish();
}
void loadData(String title) {
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(this);
SingleNote.updateWidget(this, appWidgetManager, mAppWidgetId, title);
}
The intent that sends data to the onReceive (this is in one of my activity classes)
private void updateWidget() {
Intent i = new Intent(this, SingleNote.class);
i.setAction(SingleNote.UPDATE_ACTION);
Toast.makeText(getApplicationContext(),mTitleText.getText()+"from the activity",
Toast.LENGTH_SHORT).show();//This works just fine
i.putExtra("title", mTitleText.getText());
sendBroadcast(i);
}
My widget provide class
public class SingleNote extends AppWidgetProvider {
public static String UPDATE_ACTION = "ActionUpdateSinglenoteWidget";
private static NotesDbAdapter mDbHelper;
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
final int N = appWidgetIds.length;
// Perform this loop procedure for each App Widget that belongs to this provider
for (int i=0; i<N; i++) {
int appWidgetId = appWidgetIds[i];
// Tell the AppWidgetManager to perform an update on the current app widget
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.singlenote_widget);
appWidgetManager.updateAppWidget(appWidgetId, views);
}
}
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
Bundle extras = intent.getExtras();
String title1 = extras.getString("title");//this value does not come through
Toast.makeText(context, title1,Toast.LENGTH_LONG).show();//this gives an empty space
if (action != null && action.equals(UPDATE_ACTION)) {
final AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
ComponentName name = new ComponentName(context, SingleNote.class);
int[] appWidgetId = AppWidgetManager.getInstance(context).getAppWidgetIds(name);
final int N = appWidgetId.length;
if (N < 1)
{
return ;
}
else {
int id = appWidgetId[N-1];
updateWidget(context, appWidgetManager, id ,title1);
}
}
else {
super.onReceive(context, intent);
}
}
static void updateWidget(Context context, AppWidgetManager appWidgetManager, int appWidgetId, String title){
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.singlenote_widget);
views.setTextViewText(R.id.single_note_title, title);
appWidgetManager.updateAppWidget(appWidgetId, views);
}
I suggest to try replacing i.putExtra("title", mTitleText.getText()); in updateWidget() with i.putExtra("title", mTitleText.getText().toString());
String title1 = extras.getString("title");
expects string, and mTitleText.getText() returns Editable - this is likely a mismatch
I have setup a widget like this
ToggleWidget.java
public class ToggleWidget extends AppWidgetProvider {
static RemoteViews remoteViews;
boolean status = false;
static int appWidgetId;
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
final int N = appWidgetIds.length;
// Perform this loop procedure for each App Widget that belongs to this provider
for (int i=0; i<N; i++) {
appWidgetId = appWidgetIds[i];
remoteViews = new RemoteViews(context.getPackageName(), R.layout.toggle_widget);
Intent intent = new Intent(context.getApplicationContext(), WakeService.class);
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds);
PendingIntent pendingIntent = PendingIntent.getService(
context.getApplicationContext(), 0, intent,
PendingIntent.FLAG_UPDATE_CURRENT);
remoteViews.setOnClickPendingIntent(R.id.bulb_widget, pendingIntent);
if (WakeService.isAwake) {
remoteViews.setImageViewResource(R.id.bulb_widget, R.drawable.bulb_on);
}
else {
remoteViews.setImageViewResource(R.id.bulb_widget, R.drawable.bulb_off);
}
// Tell the AppWidgetManager to perform an update on the current app widget
appWidgetManager.updateAppWidget(appWidgetId, remoteViews);
}
}
#Override
public void onDeleted(Context context, int[] appWidgetIds) {
// TODO Auto-generated method stub
super.onDeleted(context, appWidgetIds);
}
}
How can i save the ID of every widget i create and delete those that i've deleted with sharedPreferences?
Also from a service i'd like to update the widget like this
private void updateWidget(){
Intent intent = new Intent(this,ToggleWidget.class);
intent.setAction("android.appwidget.action.APPWIDGET_UPDATE");
int[] ids = {ToggleWidget.appWidgetId};
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS,ids);
sendBroadcast(intent);
}
How can i retrieve the saved IDs from the service to make the update?
In your Reciever class just override onCreate() method and under that method,
int[] ids = getIntent().getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS);
Then you will get int array, pls check it, it will work...:)
Take a look at android's Data Storage options. Here is how you could use SharedPreferences...
public class MyService extends Service{
//Class used to store data
private SharedPreferences preferences;
private int[] ids;
private int numIds;
public void retreiveIds(){
preferences = PreferenceManager.getDefaultSharedPreferences(this);
numIds = preferences.getInt("num",0);
ids = new int[numIds];
for(int i=0;i<numIds;i++){
ids[i] = preferences.getInt("ID"+i,0);
}
}
public void saveIds(){
SharedPreferences.Editor ed = preferences.edit();
numIds = ids.length;
//iterate through array and save each id
for(int i=0;i<numIds;i++){
ed.putInt("ID"+i,ids[i]);
}
ed.putInt("num",numIds);
ed.commit();
}
}
There is another way to do it. Code in kotlin:
val thisWidget = ComponentName(context, this.javaClass)
val allWidgetIds: IntArray = appWidgetManager.getAppWidgetIds(thisWidget)
Now you can use these allWidgetIds to update widgets.
Why doesn't recieve get called when I click on Button wid??
Code:
public class Widget extends AppWidgetProvider {
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
for (int i = 0; i < appWidgetIds.length; i++) {
int appWidgetId = appWidgetIds[i];
Intent intent = new Intent(context, Widget.class);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget);
views.setOnClickPendingIntent(R.id.wid, pendingIntent);
appWidgetManager.updateAppWidget(appWidgetId, views);
}
}
#Override
public void onReceive(Context context, Intent intent) {
super.onReceive(context, intent);
Log.d("ARH","CLICKK");
}
Becuase I need a button to manual refresh the widget but it seems that Log.d("ARH","CLICKK"); only gets called when i add the Widget.
Thanks!
You using a PendingIntent to call an Activity but your Widget class is not an activity.
If you want to update to your widget, then you need to use getBroadcast that sends an APPWIDGET_UPDATE action.
I respond to a button press on my appwidget in the onreceive method. When the button I pressed, I want to force the widget to call the onupdate method. How do I accomplish this?
Thanks in advance!
Widget can't actually respond to clicks because it's not a separate process running. But it can start service to process your command:
public class TestWidget extends AppWidgetProvider {
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
final int N = appWidgetIds.length;
// Perform this loop procedure for each App Widget that belongs to this provider
for (int i=0; i<N; i++) {
int appWidgetId = appWidgetIds[i];
// Create an Intent to launch UpdateService
Intent intent = new Intent(context, UpdateService.class);
PendingIntent pendingIntent = PendingIntent.getService(context, 0, intent, 0);
// Get the layout for the App Widget and attach an on-click listener to the button
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.appwidget_provider_layout);
views.setOnClickPendingIntent(R.id.button, pendingIntent);
// Tell the AppWidgetManager to perform an update on the current App Widget
appWidgetManager.updateAppWidget(appWidgetId, views);
}
}
public static class UpdateService extends Service {
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
//process your click here
return START_NOT_STICKY;
}
}
}
You should also register the new service in your manifest file:
<service android:name="com.xxx.yyy.TestWidget$UpdateService">
You can find another example of UpdateService implementation in Wiktionary sample in SDK
And here's another good approach Clickable widgets in android
This is kinda crude, but it works rather well for me, as I've found no directly-implemented way to force an update.
public class Foo extends AppWidgetManager {
public static Foo Widget = null;
public static Context context;
public static AppWidgetManager AWM;
public static int IDs[];
public void onUpdate(Context context, AppWidgetManager AWM, int IDs[]) {
if (null == context) context = Foo.context;
if (null == AWM) AWM = Foo.AWM;
if (null == IDs) IDs = Foo.IDs;
Foo.Widget = this;
Foo.context = context;
Foo.AWM = AWM;
Foo.IDs = IDs;
.......
}
}
Now, anywhere I want to force the widget to update, it's as simple as:
if (null != Foo.Widget) Foo.Widget.onUpdate(null, null, null);