要在Android MapView中使用SearchView加载位置,您需要执行以下步骤:
public class MainActivity extends AppCompatActivity {
private MapView mapView;
private SearchView searchView;
private GoogleMap googleMap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 获取MapView和SearchView的引用
mapView = findViewById(R.id.mapView);
searchView = findViewById(R.id.searchView);
// 在onCreate方法中调用MapView的生命周期方法
mapView.onCreate(savedInstanceState);
// 获取GoogleMap对象
mapView.getMapAsync(new OnMapReadyCallback() {
@Override
public void onMapReady(GoogleMap map) {
googleMap = map;
}
});
// 设置SearchView的监听器
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String query) {
// 处理搜索提交事件
searchLocation(query);
return false;
}
@Override
public boolean onQueryTextChange(String newText) {
return false;
}
});
}
// 搜索位置方法
private void searchLocation(String location) {
// 使用Geocoder进行地理编码,获取位置的经纬度
Geocoder geocoder = new Geocoder(this);
try {
List addresses = geocoder.getFromLocationName(location, 1);
if (addresses != null && !addresses.isEmpty()) {
Address address = addresses.get(0);
LatLng latLng = new LatLng(address.getLatitude(), address.getLongitude());
// 移动摄像机到指定位置
googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, 15));
}
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
protected void onResume() {
super.onResume();
mapView.onResume();
}
@Override
protected void onPause() {
super.onPause();
mapView.onPause();
}
@Override
protected void onDestroy() {
super.onDestroy();
mapView.onDestroy();
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
}
请确保在AndroidManifest.xml文件中添加以下权限和元数据:
在上面的代码示例中,您需要将YOUR_API_KEY替换为您自己的Google Maps API密钥。此外,还需要确保在build.gradle文件中添加Google Play服务依赖项:
implementation 'com.google.android.gms:play-services-maps:17.0.0'