I am learning Android here. My aim is to display the Cursor I get from calling SQLiteDatabase.query() in a ListView. Using a ContentProvider. I cannot see the text of the list items although I am certain the textual data is comming to the screen from the database because I can see the list items separator lines and even get that little animation when I touch any item. Please help me realize what could be the problem. I am suspecting with my little knowledge gained so far it is a color attribute I have to change in my configuration of material 3 light theme I am using, but i have no idea which attribute exactly.The following is the Java code
@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); insertNote("New note"); Cursor cursor = getContentResolver().query(NotesProvider.CONTENT_URI, NotesTable.COLUMNS_LIST, null,null, null, null); String[] from = {NotesTable.NOTE_TEXT}; int[] to = {android.R.id.text1}; CursorAdapter cursorAdapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_1, cursor, from, to, 0); ListView listView = findViewById(R.id.list_view); listView.setAdapter(cursorAdapter); } private void insertNote(String noteText) { ContentValues values = new ContentValues(); values.put(NotesTable.NOTE_CREATED, noteText); Uri noteUri = getContentResolver().insert(NotesProvider.CONTENT_URI, values); Log.d("MainActivityDebug", "Inserted note " + noteUri.getLastPathSegment()); }
The following is the layout file
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity"><androidx.appcompat.widget.Toolbar android:id="@+id/toolbar" android:layout_width="0dp" android:layout_height="?attr/actionBarSize" android:background="?attr/colorPrimary" android:elevation="4dp" android:theme="@style/ThemeOverlay.AppCompat.ActionBar" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" app:popupTheme="@style/ThemeOverlay.AppCompat.Light" /><ListView android:id="@+id/list_view" android:layout_width="match_parent" android:layout_height="match_parent" /></androidx.constraintlayout.widget.ConstraintLayout>
The following is how I have customind the default theme
<resources xmlns:tools="http://schemas.android.com/tools"><!-- Base application theme. --><style name="NoteDown" parent="Theme.Material3.Light.NoActionBar"><item name="colorPrimary">@color/primary</item><item name="colorPrimaryDark">@color/primary_dark</item><item name="colorAccent">@color/accent</item><item name="android:textColorPrimary">@color/text_color_primary</item></style></resources>
The following is the result screen, notice the list item separator lines
Lastly I want an experienced developer who has been developing for Android for a long time probably before 2015 to tell me whether it is too oldschool to use a Content provider to manage database operations and if it is what I should use. Thank you!