Examples
Dynamic styling (32)

Multiple text formats

package com.mapbox.mapboxandroiddemo.examples.styles;
import android.graphics.Color;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import com.mapbox.mapboxandroiddemo.R;
import com.mapbox.mapboxsdk.Mapbox;
import com.mapbox.mapboxsdk.maps.MapView;
import com.mapbox.mapboxsdk.maps.MapboxMap;
import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
import com.mapbox.mapboxsdk.maps.Style;
import com.mapbox.mapboxsdk.style.expressions.Expression;
import com.mapbox.mapboxsdk.style.layers.Layer;
import static com.mapbox.mapboxsdk.style.expressions.Expression.FormatOption.formatFontScale;
import static com.mapbox.mapboxsdk.style.expressions.Expression.FormatOption.formatTextColor;
import static com.mapbox.mapboxsdk.style.expressions.Expression.FormatOption.formatTextFont;
import static com.mapbox.mapboxsdk.style.expressions.Expression.format;
import static com.mapbox.mapboxsdk.style.expressions.Expression.formatEntry;
import static com.mapbox.mapboxsdk.style.expressions.Expression.get;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.textField;
/**
* Use runtime styling to create labels with a SymbolLayer that include multiple text
* languages, fonts, sizes, and colors.
*/
public class TextFieldMultipleFormatsActivity extends AppCompatActivity {
private MapView mapView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Mapbox access token is configured here. This needs to be called either in your application
// object or in the same activity which contains the mapview.
Mapbox.getInstance(this, getString(R.string.access_token));
// This contains the MapView in XML and needs to be called after the access token is configured.
setContentView(R.layout.activity_style_text_field_multiple_formats);
mapView = findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(new OnMapReadyCallback() {
@Override
public void onMapReady(@NonNull MapboxMap mapboxMap) {
mapboxMap.setStyle(Style.MAPBOX_STREETS, new Style.OnStyleLoaded() {
@Override
public void onStyleLoaded(@NonNull final Style style) {
// Set up label formatting expression
Expression.FormatEntry bigLabel = formatEntry(
get("name_en"),
formatFontScale(1.5),
formatTextColor(Color.BLUE),
formatTextFont(new String[] {"Ubuntu Medium", "Arial Unicode MS Regular"})
);
Expression.FormatEntry newLine = formatEntry(
// Add "\n" in order to break the line and have the second label underneath
"\n",
formatFontScale(0.5)
);
Expression.FormatEntry smallLabel = formatEntry(
get("name"),
formatTextColor(Color.parseColor("#d6550a")),
formatTextFont(new String[] {"Caveat Regular", "Arial Unicode MS Regular"})
);
Expression format = format(bigLabel, newLine, smallLabel);
// Retrieve the country label layers from the style and update them with the formatting expression
for (Layer mapLabelLayer : style.getLayers()) {
if (mapLabelLayer.getId().contains("country-label")) {
// Apply formatting expression
mapLabelLayer.setProperties(textField(format));
}
}
}
});
}
});
}
// Add the mapView lifecycle to the activity's lifecycle methods
@Override
public void onResume() {
super.onResume();
mapView.onResume();
}
@Override
protected void onStart() {
super.onStart();
mapView.onStart();
}
@Override
protected void onStop() {
super.onStop();
mapView.onStop();
}
@Override
public void onPause() {
super.onPause();
mapView.onPause();
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
@Override
protected void onDestroy() {
super.onDestroy();
mapView.onDestroy();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
}
}
Was this page helpful?