android GPS定位源码 地图显示位置源码

【实例简介】

android GPS定位源码 地图显示位置源码 有用到的小伙伴自提取

【实例截图】

【核心代码】

package apis.amap.com.usingcar;

import android.app.Activity;
import android.content.Intent;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.amap.api.maps.AMap;
import com.amap.api.maps.CameraUpdate;
import com.amap.api.maps.CameraUpdateFactory;
import com.amap.api.maps.MapView;
import com.amap.api.maps.model.BitmapDescriptorFactory;
import com.amap.api.maps.model.CameraPosition;
import com.amap.api.maps.model.LatLng;
import com.amap.api.maps.model.Marker;
import com.amap.api.maps.model.MarkerOptions;

import apis.amap.com.usingcar.lib.LocationTask;
import apis.amap.com.usingcar.lib.OnLocationGetListener;
import apis.amap.com.usingcar.lib.PositionEntity;
import apis.amap.com.usingcar.lib.RegeocodeTask;
import apis.amap.com.usingcar.lib.RouteTask;
import apis.amap.com.usingcar.lib.Utils;

public class MainActivity extends Activity  implements AMap.OnCameraChangeListener,
        AMap.OnMapLoadedListener, OnLocationGetListener, View.OnClickListener,
        RouteTask.OnRouteCalculateListener {

    private MapView mMapView;

    private AMap mAmap;

    private TextView mAddressTextView;

    private Button mDestinationButton;

    private Marker mPositionMark;

    private LatLng mStartPosition;

    private RegeocodeTask mRegeocodeTask;

    private LinearLayout mDestinationContainer;

    private TextView mRouteCostText;

    private TextView mDesitinationText;

    private LocationTask mLocationTask;

    private ImageView mLocationImage;

    private LinearLayout mFromToContainer;

    private Button mCancelButton;

    private boolean mIsFirst = true;

    private boolean mIsRouteSuccess = false;

    public interface OnGetLocationListener {
        public void getLocation(String locationAddress);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        init(savedInstanceState);
        mLocationTask = LocationTask.getInstance(getApplicationContext());
        mLocationTask.setOnLocationGetListener(this);
        mRegeocodeTask = new RegeocodeTask(getApplicationContext());
        RouteTask.getInstance(getApplicationContext())
                .addRouteCalculateListener(this);
    }

    private void init(Bundle savedInstanceState) {

        mAddressTextView = (TextView) findViewById(R.id.address_text);
        mDestinationButton = (Button) findViewById(R.id.destination_button);
        mDestinationButton.setOnClickListener(this);
        mMapView = (MapView) findViewById(R.id.map);
        mMapView.onCreate(savedInstanceState);
        mAmap = mMapView.getMap();
        mAmap.getUiSettings().setZoomControlsEnabled(false);
        mAmap.setOnMapLoadedListener(this);
        mAmap.setOnCameraChangeListener(this);

        mDestinationContainer = (LinearLayout) findViewById(R.id.destination_container);
        mRouteCostText = (TextView) findViewById(R.id.routecost_text);
        mDesitinationText = (TextView) findViewById(R.id.destination_text);
        mDesitinationText.setOnClickListener(this);
        mLocationImage = (ImageView) findViewById(R.id.location_image);
        mLocationImage.setOnClickListener(this);
        mFromToContainer = (LinearLayout) findViewById(R.id.fromto_container);
        mCancelButton = (Button) findViewById(R.id.cancel_button);

    }

    private void hideView() {

        mFromToContainer.setVisibility(View.GONE);
        mDestinationButton.setVisibility(View.GONE);
        mCancelButton.setVisibility(View.GONE);
    }

    private void showView() {
        mFromToContainer.setVisibility(View.VISIBLE);
        mDestinationButton.setVisibility(View.VISIBLE);
        if (mIsRouteSuccess) {
            mCancelButton.setVisibility(View.VISIBLE);
        }
    }

    @Override
    public void onCameraChange(CameraPosition arg0) {
        hideView();
    }

    @Override
    public void onCameraChangeFinish(CameraPosition cameraPosition) {
        showView();
        mStartPosition = cameraPosition.target;
        mRegeocodeTask.setOnLocationGetListener(this);
        mRegeocodeTask
                .search(mStartPosition.latitude, mStartPosition.longitude);
        if (mIsFirst) {
            Utils.addEmulateData(mAmap, mStartPosition);
            if (mPositionMark != null) {
                mPositionMark.setToTop();
            }
            mIsFirst = false;
        }
    }

    /**
     * 方法必须重写
     */
    @Override
    protected void onResume() {
        super.onResume();
        mMapView.onResume();
    }

    /**
     * 方法必须重写
     */
    @Override
    protected void onPause() {
        super.onPause();
        mMapView.onPause();
    }

    /**
     * 方法必须重写
     */
    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        mMapView.onSaveInstanceState(outState);
    }

    /**
     * 方法必须重写
     */
    @Override
    protected void onDestroy() {
        super.onDestroy();
        Utils.removeMarkers();
        mMapView.onDestroy();
        mLocationTask.onDestroy();
        RouteTask.getInstance(getApplicationContext()).removeRouteCalculateListener(this);

    }

    @Override
    public void onMapLoaded() {

        MarkerOptions markerOptions = new MarkerOptions();
        markerOptions.setFlat(true);
        markerOptions.anchor(0.5f, 0.5f);
        markerOptions.position(new LatLng(0, 0));
        markerOptions
                .icon(BitmapDescriptorFactory.fromBitmap(BitmapFactory
                        .decodeResource(getResources(),
                                R.drawable.icon_loaction_start)));
        mPositionMark = mAmap.addMarker(markerOptions);

        mPositionMark.setPositionByPixels(mMapView.getWidth() / 2,
                mMapView.getHeight() / 2);
        mLocationTask.startSingleLocate();
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.destination_button:
                Intent intent = new Intent(this, DestinationActivity.class);
                startActivity(intent);
                break;
            case R.id.location_image:
                mLocationTask.startSingleLocate();
                break;
            case R.id.destination_text:
                Intent destinationIntent = new Intent(this,
                        DestinationActivity.class);
                startActivity(destinationIntent);
                break;
        }
    }

    @Override
    public void onLocationGet(PositionEntity entity) {
        // todo 这里在网络定位时可以减少一个逆地理编码
        mAddressTextView.setText(entity.address);
        RouteTask.getInstance(getApplicationContext()).setStartPoint(entity);

        mStartPosition = new LatLng(entity.latitue, entity.longitude);
        CameraUpdate cameraUpate = CameraUpdateFactory.newLatLngZoom(
                mStartPosition, mAmap.getCameraPosition().zoom);
        mAmap.animateCamera(cameraUpate);

    }

    @Override
    public void onRegecodeGet(PositionEntity entity) {
        mAddressTextView.setText(entity.address);
        entity.latitue = mStartPosition.latitude;
        entity.longitude = mStartPosition.longitude;
        RouteTask.getInstance(getApplicationContext()).setStartPoint(entity);
        RouteTask.getInstance(getApplicationContext()).search();
    }

    @Override
    public void onRouteCalculate(float cost, float distance, int duration) {
        mDestinationContainer.setVisibility(View.VISIBLE);
        mIsRouteSuccess = true;
        mRouteCostText.setVisibility(View.VISIBLE);
        mDesitinationText.setText(RouteTask
                .getInstance(getApplicationContext()).getEndPoint().address);
        mRouteCostText.setText(String.format("预估费用%.2f元，距离%.1fkm,用时%d分", cost,
                distance, duration));
        mDestinationButton.setText("我要用车");
        mCancelButton.setVisibility(View.VISIBLE);
        mDestinationButton.setOnClickListener(null);
    }
}