<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:id="@+id/activity_select_point"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context="com.example.euphemiaxiao.feedback.selectPoint">

    <com.amap.api.maps.MapView

        android:id="@+id/map"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:layout_above="@+id/doneSelect">

    </com.amap.api.maps.MapView>

    <Button

        android:text="确认选点"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:id="@+id/doneSelect"

        android:background="@android:color/holo_blue_light"

        android:textSize="18sp"

        android:layout_centerHorizontal="true"

        android:layout_alignParentBottom="true"/>

</RelativeLayout>

package com.example.euphemiaxiao.feedback;

import android.content.Intent;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.view.View;

import android.widget.Button;

import com.amap.api.maps.AMap;

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.LatLng;

import com.amap.api.maps.model.MarkerOptions;

public class selectPoint extends AppCompatActivity implements AMap.OnMapClickListener{

    private Button doneSelect;

    private MapView mMapView = null;

    private AMap aMap = null;

    double latitude;

    double longtitude;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_select_point);

        //获取地图控件引用

        mMapView = (MapView) findViewById(R.id.map);

        //在activity执行onCreate时执行mMapView.onCreate(savedInstanceState)，创建地图

        mMapView.onCreate(savedInstanceState);

        init();

        doneSelect = (Button)findViewById(R.id.doneSelect);

        doneSelect.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                Intent intent = new Intent(selectPoint.this,Feedback.class);

                intent.putExtra("latitude",latitude);

                intent.putExtra("longtitude",longtitude);

                startActivity(intent);

            }

        });

    }

    private void init() {

        if (aMap == null) {

            aMap = mMapView.getMap();

            setUpMap();

        }

    }

    private void setUpMap() {

        aMap.showIndoorMap(true);

        LatLng latLng = new LatLng(39.92448, 116.518295);

        aMap.moveCamera(CameraUpdateFactory.changeLatLng(latLng));//设置中心点

        aMap.moveCamera(CameraUpdateFactory.zoomTo(18)); // 设置地图可视缩放大小

        aMap.setOnMapClickListener(this);

    }

    @Override

    protected void onDestroy() {

        super.onDestroy();

        //在activity执行onDestroy时执行mMapView.onDestroy()，销毁地图

        mMapView.onDestroy();

    }

    @Override

    protected void onResume() {

        super.onResume();

        //在activity执行onResume时执行mMapView.onResume ()，重新绘制加载地图

        mMapView.onResume();

    }

    @Override

    protected void onPause() {

        super.onPause();

        //在activity执行onPause时执行mMapView.onPause ()，暂停地图的绘制

        mMapView.onPause();

    }

    @Override

    protected void onSaveInstanceState(Bundle outState) {

        super.onSaveInstanceState(outState);

        //在activity执行onSaveInstanceState时执行mMapView.onSaveInstanceState (outState)，保存地图当前的状态

        mMapView.onSaveInstanceState(outState);

    }

    @Override

    public void onMapClick(LatLng latLng) {

        aMap.clear();

        latitude=latLng.latitude;

        longtitude=latLng.longitude;

        MarkerOptions markerOptions = new MarkerOptions();

        markerOptions.icon(BitmapDescriptorFactory.fromResource(R.drawable.placeholder));

        markerOptions.position(latLng);

        aMap.addMarker(markerOptions);

        aMap.moveCamera(CameraUpdateFactory.changeLatLng(latLng));

    }

}