adding some code related to updating specific widgets only

app/src/main/kotlin/com/simplemobiletools/notes/activities/MainActivity.kt

@@ -25,10 +25,7 @@ import com.simplemobiletools.notes.BuildConfig
 import com.simplemobiletools.notes.R
 import com.simplemobiletools.notes.adapters.NotesPagerAdapter
 import com.simplemobiletools.notes.dialogs.*
-import com.simplemobiletools.notes.extensions.config
-import com.simplemobiletools.notes.extensions.dbHelper
-import com.simplemobiletools.notes.extensions.getTextSize
-import com.simplemobiletools.notes.extensions.updateWidget
+import com.simplemobiletools.notes.extensions.*
 import com.simplemobiletools.notes.helpers.MIME_TEXT_PLAIN
 import com.simplemobiletools.notes.helpers.OPEN_NOTE_ID
 import com.simplemobiletools.notes.helpers.TYPE_NOTE
@@ -40,7 +37,7 @@ import java.nio.charset.Charset
 class MainActivity : SimpleActivity(), ViewPager.OnPageChangeListener {
     private var mAdapter: NotesPagerAdapter? = null
 
-    lateinit var mCurrentNote: Note
+    private lateinit var mCurrentNote: Note
     private var mNotes = ArrayList<Note>()
 
     private var noteViewWithTextSelected: MyEditText? = null
@@ -533,7 +530,7 @@ class MainActivity : SimpleActivity(), ViewPager.OnPageChangeListener {
         updateSelectedNote(firstNoteId)
         if (config.widgetNoteId == note.id) {
             config.widgetNoteId = mCurrentNote.id
-            updateWidget()
+            updateNoteWidget(mCurrentNote.id)
         }
         invalidateOptionsMenu()
         initViewPager()

app/src/main/kotlin/com/simplemobiletools/notes/activities/SettingsActivity.kt

@@ -3,7 +3,6 @@ package com.simplemobiletools.notes.activities
 import android.content.Intent
 import android.content.res.Resources
 import android.os.Bundle
-import android.view.View
 import com.simplemobiletools.commons.dialogs.RadioGroupDialog
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.IS_CUSTOMIZING_COLORS
@@ -11,7 +10,7 @@ import com.simplemobiletools.commons.models.RadioItem
 import com.simplemobiletools.notes.R
 import com.simplemobiletools.notes.extensions.config
 import com.simplemobiletools.notes.extensions.dbHelper
-import com.simplemobiletools.notes.extensions.updateWidget
+import com.simplemobiletools.notes.extensions.updateWidgets
 import com.simplemobiletools.notes.helpers.*
 import com.simplemobiletools.notes.models.Note
 import kotlinx.android.synthetic.main.activity_settings.*
@@ -45,7 +44,6 @@ class SettingsActivity : SimpleActivity() {
         setupEnableLineWrap()
         setupFontSize()
         setupGravity()
-        setupWidgetNote()
         setupCursorPlacement()
         setupCustomizeWidgetColors()
         updateTextColors(settings_scrollview)
@@ -167,7 +165,7 @@ class SettingsActivity : SimpleActivity() {
             RadioGroupDialog(this@SettingsActivity, items, config.fontSize) {
                 config.fontSize = it as Int
                 settings_font_size.text = getFontSizeText()
-                updateWidget()
+                updateWidgets()
             }
         }
     }
@@ -190,7 +188,7 @@ class SettingsActivity : SimpleActivity() {
             RadioGroupDialog(this@SettingsActivity, items, config.gravity) {
                 config.gravity = it as Int
                 settings_gravity.text = getGravityText()
-                updateWidget()
+                updateWidgets()
             }
         }
     }
@@ -201,24 +199,6 @@ class SettingsActivity : SimpleActivity() {
         else -> R.string.right
     })
 
-    private fun setupWidgetNote() {
-        if (notes.size <= 1) {
-            settings_widget_note_holder.visibility = View.GONE
-            return
-        }
-
-        settings_widget_note.text = getCurrentWidgetNoteTitle(config.widgetNoteId, notes)
-        settings_widget_note_holder.setOnClickListener {
-            val items = notes.map { RadioItem(it.id, it.title) } as ArrayList
-
-            RadioGroupDialog(this@SettingsActivity, items, config.widgetNoteId) {
-                config.widgetNoteId = it as Int
-                settings_widget_note.text = getCurrentWidgetNoteTitle(it, notes)
-                updateWidget()
-            }
-        }
-    }
-
     private fun setupCursorPlacement() {
         settings_cursor_placement.isChecked = config.placeCursorToEnd
         settings_cursor_placement_holder.setOnClickListener {
@@ -227,9 +207,6 @@ class SettingsActivity : SimpleActivity() {
         }
     }
 
-    private fun getCurrentWidgetNoteTitle(currentNoteId: Int, notes: List<Note>) =
-            notes.firstOrNull { it.id == currentNoteId }?.title ?: ""
-
     private fun setupCustomizeWidgetColors() {
         settings_customize_widget_colors_holder.setOnClickListener {
             Intent(this, WidgetConfigureActivity::class.java).apply {

app/src/main/kotlin/com/simplemobiletools/notes/adapters/WidgetAdapter.kt

@@ -14,15 +14,17 @@ import com.simplemobiletools.notes.extensions.dbHelper
 import com.simplemobiletools.notes.extensions.getTextSize
 import com.simplemobiletools.notes.helpers.GRAVITY_CENTER
 import com.simplemobiletools.notes.helpers.GRAVITY_RIGHT
+import com.simplemobiletools.notes.helpers.NOTE_ID
 import com.simplemobiletools.notes.helpers.OPEN_NOTE_ID
 
-class WidgetAdapter(val context: Context) : RemoteViewsService.RemoteViewsFactory {
+class WidgetAdapter(val context: Context, val intent: Intent) : RemoteViewsService.RemoteViewsFactory {
     private val textIds = arrayOf(R.id.widget_text_left, R.id.widget_text_center, R.id.widget_text_right)
     private val widgetTextColor = context.config.widgetTextColor
 
     override fun getViewAt(position: Int): RemoteViews {
+        val noteId = intent.getIntExtra(NOTE_ID, 1)
         val views = RemoteViews(context.packageName, R.layout.widget_text_layout).apply {
-            val note = context.dbHelper.getNote(context.config.widgetNoteId)
+            val note = context.dbHelper.getNoteWithId(noteId)
             if (note != null) {
                 val noteText = note.getNoteStoredValue() ?: ""
                 val textSize = context.getTextSize() / context.resources.displayMetrics.density
@@ -35,7 +37,7 @@ class WidgetAdapter(val context: Context) : RemoteViewsService.RemoteViewsFactor
             }
 
             Intent().apply {
-                putExtra(OPEN_NOTE_ID, context.config.widgetNoteId)
+                putExtra(OPEN_NOTE_ID, noteId)
                 setOnClickFillInIntent(widget_text_holder, this)
             }
 

app/src/main/kotlin/com/simplemobiletools/notes/extensions/Context.kt

@@ -1,7 +1,5 @@
 package com.simplemobiletools.notes.extensions
 
-import android.appwidget.AppWidgetManager
-import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
 import com.simplemobiletools.notes.R
@@ -11,20 +9,26 @@ val Context.config: Config get() = Config.newInstance(applicationContext)
 
 val Context.dbHelper: DBHelper get() = DBHelper.newInstance(applicationContext)
 
-fun Context.getTextSize() =
-        when (config.fontSize) {
-            FONT_SIZE_SMALL -> resources.getDimension(R.dimen.smaller_text_size)
-            FONT_SIZE_LARGE -> resources.getDimension(R.dimen.big_text_size)
-            FONT_SIZE_EXTRA_LARGE -> resources.getDimension(R.dimen.extra_big_text_size)
-            else -> resources.getDimension(R.dimen.bigger_text_size)
-        }
+fun Context.getTextSize() = when (config.fontSize) {
+    FONT_SIZE_SMALL -> resources.getDimension(R.dimen.smaller_text_size)
+    FONT_SIZE_LARGE -> resources.getDimension(R.dimen.big_text_size)
+    FONT_SIZE_EXTRA_LARGE -> resources.getDimension(R.dimen.extra_big_text_size)
+    else -> resources.getDimension(R.dimen.bigger_text_size)
+}
 
-fun Context.updateWidget() {
-    val widgetIDs = AppWidgetManager.getInstance(this).getAppWidgetIds(ComponentName(this, MyWidgetProvider::class.java))
-    if (widgetIDs.isNotEmpty()) {
+fun Context.updateWidgets() {
+    dbHelper.getNotes().forEach {
+        updateNoteWidget(it.id)
+    }
+}
+
+fun Context.updateNoteWidget(noteId: Int) {
+    val widgetIds = dbHelper.getNoteWidgetIds(noteId)
+    widgetIds.forEach {
         Intent(this, MyWidgetProvider::class.java).apply {
-            action = AppWidgetManager.ACTION_APPWIDGET_UPDATE
-            putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, widgetIDs)
+            action = UPDATE_WIDGET
+            putExtra(WIDGET_ID, it)
+            putExtra(NOTE_ID, noteId)
             sendBroadcast(this)
         }
     }

app/src/main/kotlin/com/simplemobiletools/notes/fragments/NoteFragment.kt

@@ -22,7 +22,7 @@ import com.simplemobiletools.notes.activities.MainActivity
 import com.simplemobiletools.notes.extensions.config
 import com.simplemobiletools.notes.extensions.dbHelper
 import com.simplemobiletools.notes.extensions.getTextSize
-import com.simplemobiletools.notes.extensions.updateWidget
+import com.simplemobiletools.notes.extensions.updateNoteWidget
 import com.simplemobiletools.notes.helpers.*
 import com.simplemobiletools.notes.models.Note
 import com.simplemobiletools.notes.models.TextHistory
@@ -156,7 +156,7 @@ class NoteFragment : Fragment() {
         if (newText != null && (newText != oldText || force)) {
             note.value = newText
             saveNoteValue(note)
-            context!!.updateWidget()
+            context!!.updateNoteWidget(note.id)
         }
     }
 

app/src/main/kotlin/com/simplemobiletools/notes/helpers/Constants.kt

@@ -2,6 +2,8 @@ package com.simplemobiletools.notes.helpers
 
 const val NOTE_ID = "note_id"
 const val OPEN_NOTE_ID = "open_note_id"
+const val UPDATE_WIDGET = "update_widget"
+const val WIDGET_ID = "widget_id"
 
 // shared preferences
 const val CURRENT_NOTE_ID = "current_note_id"

app/src/main/kotlin/com/simplemobiletools/notes/helpers/DBHelper.kt

@@ -219,4 +219,22 @@ class DBHelper private constructor(private val mContext: Context) : SQLiteOpenHe
     }
 
     fun isValidId(id: Int) = id > 0
+
+    fun getNoteWidgetIds(noteId: Int): ArrayList<Int> {
+        val widgetIds = ArrayList<Int>()
+        val cols = arrayOf(COL_WIDGET_ID)
+        val selection = "$COL_NOTE_ID = ?"
+        val selectionArgs = arrayOf(noteId.toString())
+        var cursor: Cursor? = null
+        try {
+            cursor = mDb.query(WIDGETS_TABLE_NAME, cols, selection, selectionArgs, null, null, null)
+            if (cursor?.moveToFirst() == true) {
+                val widgetId = cursor.getIntValue(COL_WIDGET_ID)
+                widgetIds.add(widgetId)
+            }
+        } finally {
+            cursor?.close()
+        }
+        return widgetIds
+    }
 }

app/src/main/kotlin/com/simplemobiletools/notes/helpers/MyWidgetProvider.kt

@@ -3,7 +3,6 @@ package com.simplemobiletools.notes.helpers
 import android.app.PendingIntent
 import android.appwidget.AppWidgetManager
 import android.appwidget.AppWidgetProvider
-import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
 import android.net.Uri
@@ -16,34 +15,32 @@ import com.simplemobiletools.notes.extensions.config
 import com.simplemobiletools.notes.services.WidgetService
 
 class MyWidgetProvider : AppWidgetProvider() {
-    override fun onUpdate(context: Context, appWidgetManager: AppWidgetManager, appWidgetIds: IntArray) {
-        performUpdate(context)
-    }
-
-    private fun performUpdate(context: Context) {
-        val appWidgetManager = AppWidgetManager.getInstance(context)
-        appWidgetManager.getAppWidgetIds(getComponentName(context)).forEach {
-            val views = RemoteViews(context.packageName, R.layout.widget)
-            views.setBackgroundColor(R.id.notes_widget_holder, context.config.widgetBgColor)
-            setupAppOpenIntent(context, views, R.id.notes_widget_holder)
-
-            Intent(context, WidgetService::class.java).apply {
-                data = Uri.parse(this.toUri(Intent.URI_INTENT_SCHEME))
-                views.setRemoteAdapter(R.id.notes_widget_listview, this)
-            }
-
-            val widgetId = context.config.widgetNoteId
-            val startActivityIntent = context.getLaunchIntent() ?: Intent(context, SplashActivity::class.java)
-            startActivityIntent.putExtra(OPEN_NOTE_ID, widgetId)
-            val startActivityPendingIntent = PendingIntent.getActivity(context, widgetId, startActivityIntent, PendingIntent.FLAG_UPDATE_CURRENT)
-            views.setPendingIntentTemplate(R.id.notes_widget_listview, startActivityPendingIntent)
-
-            appWidgetManager.updateAppWidget(it, views)
-            appWidgetManager.notifyAppWidgetViewDataChanged(it, R.id.notes_widget_listview)
+    private fun performUpdate(context: Context, intent: Intent) {
+        val noteId = intent.getIntExtra(NOTE_ID, -1)
+        val widgetId = intent.getIntExtra(WIDGET_ID, -1)
+        if (noteId == -1 || widgetId == -1) {
+            return
         }
-    }
 
-    private fun getComponentName(context: Context) = ComponentName(context, MyWidgetProvider::class.java)
+        val appWidgetManager = AppWidgetManager.getInstance(context)
+        val views = RemoteViews(context.packageName, R.layout.widget)
+        views.setBackgroundColor(R.id.notes_widget_holder, context.config.widgetBgColor)
+        setupAppOpenIntent(context, views, R.id.notes_widget_holder)
+
+        Intent(context, WidgetService::class.java).apply {
+            putExtra(NOTE_ID, noteId)
+            data = Uri.parse(this.toUri(Intent.URI_INTENT_SCHEME))
+            views.setRemoteAdapter(R.id.notes_widget_listview, this)
+        }
+
+        val startActivityIntent = context.getLaunchIntent() ?: Intent(context, SplashActivity::class.java)
+        startActivityIntent.putExtra(OPEN_NOTE_ID, widgetId)
+        val startActivityPendingIntent = PendingIntent.getActivity(context, widgetId, startActivityIntent, PendingIntent.FLAG_UPDATE_CURRENT)
+        views.setPendingIntentTemplate(R.id.notes_widget_listview, startActivityPendingIntent)
+
+        appWidgetManager.updateAppWidget(widgetId, views)
+        appWidgetManager.notifyAppWidgetViewDataChanged(widgetId, R.id.notes_widget_listview)
+    }
 
     private fun setupAppOpenIntent(context: Context, views: RemoteViews, id: Int) {
         val widgetId = context.config.widgetNoteId
@@ -52,4 +49,13 @@ class MyWidgetProvider : AppWidgetProvider() {
         val pendingIntent = PendingIntent.getActivity(context, widgetId, intent, 0)
         views.setOnClickPendingIntent(id, pendingIntent)
     }
+
+    // use only this way of updating widgets instead of onUpdate, so that we can pass a widget ID too
+    override fun onReceive(context: Context, intent: Intent) {
+        val action = intent.action
+        when (action) {
+            UPDATE_WIDGET -> performUpdate(context, intent)
+            else -> super.onReceive(context, intent)
+        }
+    }
 }

app/src/main/kotlin/com/simplemobiletools/notes/services/WidgetService.kt

@@ -5,5 +5,5 @@ import android.widget.RemoteViewsService
 import com.simplemobiletools.notes.adapters.WidgetAdapter
 
 class WidgetService : RemoteViewsService() {
-    override fun onGetViewFactory(intent: Intent) = WidgetAdapter(applicationContext)
+    override fun onGetViewFactory(intent: Intent) = WidgetAdapter(applicationContext, intent)
 }

app/src/main/res/layout/activity_settings.xml

@@ -483,40 +483,5 @@
                 android:text="@string/customize_widget_colors"/>
 
         </RelativeLayout>
-
-        <RelativeLayout
-            android:id="@+id/settings_widget_note_holder"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:layout_marginTop="@dimen/medium_margin"
-            android:background="?attr/selectableItemBackground"
-            android:paddingBottom="@dimen/activity_margin"
-            android:paddingLeft="@dimen/normal_margin"
-            android:paddingRight="@dimen/normal_margin"
-            android:paddingTop="@dimen/activity_margin">
-
-            <com.simplemobiletools.commons.views.MyTextView
-                android:id="@+id/settings_widget_note_label"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:layout_centerVertical="true"
-                android:layout_toLeftOf="@+id/settings_widget_note"
-                android:layout_toStartOf="@+id/settings_widget_note"
-                android:paddingLeft="@dimen/medium_margin"
-                android:paddingRight="@dimen/medium_margin"
-                android:text="@string/widget_note"/>
-
-            <com.simplemobiletools.commons.views.MyTextView
-                android:id="@+id/settings_widget_note"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:layout_alignParentEnd="true"
-                android:layout_alignParentRight="true"
-                android:layout_marginEnd="@dimen/medium_margin"
-                android:layout_marginRight="@dimen/medium_margin"
-                android:background="@null"
-                android:clickable="false"/>
-
-        </RelativeLayout>
     </LinearLayout>
 </ScrollView>