Fonts ContentProvider

MyFontProvider.java

// Notes on ContentProvider to fulfil requests for fonts, such as from FontsContractCompat.

// Not all imports shown
import android.provider.FontsContract.Columns;

public abstract class MyFontProvider extends ContentProvider {
  @Override
  public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
    String query = selectionArgs[0]; // change based on your input pattern
    
    // Prepare a response cursor
    // Columns from https://android.googlesource.com/platform/frameworks/support/+/androidx-master-release/compat/src/main/java/androidx/core/provider/FontsContractCompat.java
        // Set up response cursor.
    MatrixCursor cursor =
        new MatrixCursor(
            new String[] {
              Columns._ID,
              Columns.FILE_ID,
              Columns.TTC_INDEX,
              Columns.VARIATION_SETTINGS,
              Columns.WEIGHT,
              Columns.ITALIC,
              Columns.RESULT_CODE
            });
    
    // Figure out if you understand the query
    if (weUnderstandQuery()) {
        cursor.addRow(
            new Object[] {
              an_identifier_you_generated,
              0,
              null,
              400,
              0.0,
              RESULT_CODE_OK
            });
    } else {
      writeErrorToCursor(cursor, error code, perhaps RESULT_CODE_FONT_UNAVAILABLE);
    }
  }

  @Override
  public ParcelFileDescriptor openFile(Uri uri, String mode) {
    // Uri is based on what you sent back from query
    // See FontsContractCompat for details
    // Extract identifier from uri
    // Build and return a ParcelFileDescriptor for the font
  }
}