百度SDK地图显示和定位

1.这里最主要的就是SHA1比较麻烦

包名就是java代码第一行那个

找到图中的文件双击

复制自己的SHA1就OK了


如果上图你没有出现那个目录的话，取消勾选这个按钮，点击OK，设置完成以后重新打开软件，就OK了

如果上面都配置好了的话，就开始进入最激动人心的实现地图功能。
AndroidMainfest.xml

    
    
    
    
    
    
    
    
    
    
    
    
    
    

    
        //这个是百度上自己软件key的值，每个人都不一样
        
        
        
            
                

                
            
        
    

MainActivity.java

package com.example.baidugps;

import android.Manifest;
import android.app.Activity;
import android.app.alertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.provider.Settings;
import android.util.Log;
import android.widget.Toast;

import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;

import com.baidu.mapapi.SDKInitializer;
import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.MapStatusUpdate;
import com.baidu.mapapi.map.MapStatusUpdateFactory;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.map.MyLocationData;
import com.baidu.mapapi.model.LatLng;

import java.util.List;

public class MainActivity extends Activity {

    private MapView mapView;
    private BaiduMap baiduMap;
    private LocationManager locationManager;
    private String provider;
    private boolean isFirstLocate = true;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        SDKInitializer.initialize(getApplicationContext());
        setContentView(R.layout.activity_main);
        mapView = (MapView) findViewById(R.id.bmapView);
        baiduMap = mapView.getMap();
        new Thread(new GameThread()).start();
        openGPSSettings();
        //设置位置提供器
        setLovationManager();
        //将显示位置的功能开启
        baiduMap.setMyLocationEnabled(true);

    }
    Handler mHandler = new Handler() {
        public void  handleMessage(Message msg){
            switch (msg.what){
                case 1:
                    Log.d("输出a",""+isFirstLocate);
                    mapView.invalidate();        //刷新界面
                    isFirstLocate = false;
                    break;
            }
        }
    };

    class GameThread implements Runnable {
        public void run() {
            while (!Thread.currentThread().isInterrupted()) {
                new Thread(new Runnable() {
                    @Override
                    public void run() {
                        Log.d("输出1",""+isFirstLocate);
                        if (ContextCompat.checkSelfPermission(MainActivity.this, android.Manifest.permission.ACCESS_COARSE_LOCATION)!=PackageManager.PERMISSION_GRANTED){
                            ActivityCompat.requestPermissions(MainActivity.this, new String []{android.Manifest.permission.ACCESS_COARSE_LOCATION},1);
                        }
                        if (isFirstLocate){
                            mapView.invalidate();        //刷新界面
                            Message msg = new Message();
                            msg.what = 1;
                            mHandler.sendMessage(msg);
                        }
                    }
                }).start();
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    Thread.currentThread().interrupt();
                }
            }
        }

    }
    private boolean checkGPSIsOpen() {
        boolean isOpen;
        LocationManager locationManager = (LocationManager) this
                .getSystemService(Context.LOCATION_SERVICE);
        isOpen = locationManager.isProviderEnabled(android.location.LocationManager.GPS_PROVIDER);
        return isOpen;
    }


    private void openGPSSettings() {
        if (!checkGPSIsOpen()) {
            //没有打开则弹出对话框
            alertDialog.Builder dialog = new alertDialog.Builder(this);
            dialog.setTitle("提示");
            dialog.setMessage("打开定位功能可以提高精度哟");
            dialog.setCancelable(false);//不能用返回关闭
            // 拒绝, 退出应用
            dialog.setNegativeButton("取消", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    Activity activity=new Activity();
                    System.exit(0);
                }
            });
            dialog.setPositiveButton("开启定位",
                    new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            //跳转GPS设置界面
                            Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                            startActivity(intent);
                        }
                    });
            dialog.show();

        }
    }


    private void setLovationManager() {
        locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        //获取所有可用的位置提供器
        List providerList = locationManager.getProviders(true);
        if (providerList.contains(LocationManager.GPS_PROVIDER)) {
            provider = LocationManager.GPS_PROVIDER;
        } else if (providerList.contains(LocationManager.NETWORK_PROVIDER)) {
            provider = LocationManager.NETWORK_PROVIDER;
        } else {
            //当前没有可用的位置提供器时，弹出Toast提示
            Toast.makeText(this, "没有可用的位置提供器", Toast.LENGTH_SHORT).show();
            return;
        }
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    ActivityCompat#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for ActivityCompat#requestPermissions for more details.
            return;
        }
        Location location = locationManager.getLastKnownLocation(provider);
        if(location!=null){
            navigateTo(location);
        }

        locationManager.requestLocationUpdates(provider,5000,5,locationListener);
    }

    private void navigateTo(Location location) {
        //如果是第一次创建，就获取位置信息并且将地图移到当前位置
        //为防止地图被反复移动，所以就只在第一次创建时执行
        if(isFirstLocate){
            //LatLng对象主要用来存放经纬度
            //zoomTo是用来设置百度地图的缩放级别，范围为3~19，数值越大越精确
            LatLng ll=new LatLng(location.getLatitude(),location.getLongitude());
            MapStatusUpdate update= MapStatusUpdateFactory.newLatLng(ll);
            baiduMap.animateMapStatus(update);
            update=MapStatusUpdateFactory.zoomTo(16f);
            baiduMap.animateMapStatus(update);
            isFirstLocate=false;
        }

        //封装设备当前位置并且显示在地图上
        //由于设备在地图上显示的位置会根据我们当前位置而改变，所以写到if外面
        MyLocationData.Builder locationBuilder=new MyLocationData.Builder();
        locationBuilder.latitude(location.getLatitude());
        locationBuilder.longitude(location.getLongitude());
        MyLocationData locationData=locationBuilder.build();
        baiduMap.setMyLocationData(locationData);
    }

    LocationListener locationListener =new LocationListener() {
        @Override
        public void onLocationChanged(Location location) {
            if(locationManager!=null)
                navigateTo(location);
        }

        @Override
        public void onStatusChanged(String s, int i, Bundle bundle) {

        }

        @Override
        public void onProviderEnabled(String s) {

        }

        @Override
        public void onProviderDisabled(String s) {

        }
    };

    @Override
    protected void onDestroy() {
        super.onDestroy();
        //最后要销毁mapView
        //关闭程序时将监听器移除
        //关闭可以显示位置的功能
        mapView.onDestroy();
        if(locationManager!=null){
            locationManager.removeUpdates(locationListener);
        }
        baiduMap.setMyLocationEnabled(false);
    }

    @Override
    protected void onPause() {
        super.onPause();
        mapView.onPause();
    }

    @Override
    protected void onResume() {
        super.onResume();
        mapView.onResume();
    }
}

activity_main.xml

如果这里你的MapView爆红的话，就说明你的百度skd的jar包没有引入成功
到这肯定有帅逼会问了，哎，sdk在哪下载啊

这就是在申请key的那个网站上，选择AndroidSDK，进入这里，点你想要的服务下载SDK就行


进来以后把所有的libs下的文件复制到自己代码的libs下

右击BaiduLBS_ndroid.jar
选择Add_As_Library…

选择ok
你的build.gradle文件就会出现这个

然后在这里面引入
build.gradle

plugins {
    id 'com.android.application'
}

android {
    compileSdkVersion 30
    buildToolsVersion "30.0.3"

    defaultConfig {
        applicationId "com.example.baidugps"
        minSdkVersion 16
        targetSdkVersion 30
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    sourceSets {
        main {
            jniLibs.srcDirs = ['libs']
        }
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {
    implementation 'androidx.appcompat:appcompat:1.3.1'
    implementation 'com.google.android.material:material:1.2.1'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.1'
    implementation files('libs\BaiduLBS_android.jar')
    testImplementation 'junit:junit:4.+'
    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}

DemoApplication.java

package com.example.baidugps;

import android.app.Application;

import com.baidu.mapapi.CoordType;
import com.baidu.mapapi.SDKInitializer;

public class DemoApplication extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        //在使用SDK各组件之前初始化context信息，传入ApplicationContext
        SDKInitializer.initialize(this);
        //自4.3.0起，百度地图SDK所有接口均支持百度坐标和国测局坐标，用此方法设置您使用的坐标类型.
        //包括BD09LL和GCJ02两种坐标，默认是BD09LL坐标。
        SDKInitializer.setCoordType(CoordType.BD09LL);
    }
}