要自定義Leaflet Android地圖控件,您需要遵循以下步驟:
build.gradle
文件中添加以下依賴項:dependencies {
implementation 'com.github.Rob--W:Leaflet-Android:0.1.0'
}
CustomMapController
,并繼承leaflet.js
中的L.Control
類。重寫onAdd
方法以創(chuàng)建自定義控件的用戶界面。例如:import android.content.Context;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.github.Rob--W.Leaflet-Android.L;
import com.github.Rob--W.Leaflet-Android.Control;
public class CustomMapController extends Control {
private TextView customText;
public CustomMapController(Context context) {
super(context);
init();
}
private void init() {
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
customText = new TextView(getContext());
customText.setText("Hello, I'm a custom control!");
customText.setLayoutParams(layoutParams);
LinearLayout linearLayout = new LinearLayout(getContext());
linearLayout.setOrientation(LinearLayout.HORIZONTAL);
linearLayout.addView(customText);
setOnAdd(linearLayout);
}
}
MainActivity
)中,創(chuàng)建一個CustomMapController
實例,并將其添加到地圖控件堆棧中。例如:import android.os.Bundle;
import com.github.Rob--W.Leaflet-Android.Map;
import com.github.Rob--W.Leaflet-Android.MapOptions;
import com.github.Rob--W.Leaflet-Android.LeafletView;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
LeafletView leafletView = findViewById(R.id.leafletView);
Map map = new Map(this, leafletView, new MapOptions().center(new L.Coordinate(51.505, -0.09)));
CustomMapController customMapController = new CustomMapController(this);
map.addControl(customMapController);
}
}
現(xiàn)在,您應該能夠在地圖上看到您的自定義控件。您可以根據(jù)需要修改CustomMapController
類以添加更多功能和樣式。