編輯:關於android開發
手機都有gps和網絡,通過gps或者網絡可以定位到自己,然後通過百度,騰訊啊之類的地圖可以顯示我們的地理位置。這裡學習下百度地圖的使用。首先就是要申請開發者了,這個詳細就不多講了。http://developer.baidu.com/map/wiki/index.php?title=androidsdk/guide/key。可以參考這裡,詳細介紹了怎麼申請。
然後創建應用,創建好了之後,如下所示:
接著是下載百度的sdk了。http://lbsyun.baidu.com/index.php?title=androidsdk/sdkandev-download。一鍵下載即可,下載好後是v3.7.1版本,如下:
之後需要把libs下的內容拷貝到項目中的。接著我們新建工程,emBaiduMapStudy。然後把上面libs下的jar包和文件夾下的so都拷貝到項目的libs目錄下。修改build.gradle:
apply plugin: 'com.android.application' android { compileSdkVersion 23 buildToolsVersion "23.0.2" defaultConfig { applicationId "com.jared.embaidumapstudy" minSdkVersion 15 targetSdkVersion 23 versionCode 1 versionName "1.0" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } sourceSets { main { jniLibs.srcDirs = ['libs'] } } } dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) testCompile 'junit:junit:4.12' compile 'com.android.support:appcompat-v7:23.1.1' }
<!--{cke_protected}{C}%3C!%2D%2D%3Fxml%20version%3D%221.0%22%20encoding%3D%22utf-8%22%3F%2D%2D%3E--> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:layout_margin="5dp"> <textview android:text="Hello Baidu Map" android:layout_gravity="center" android:layout_margin="2dp" android:layout_width="wrap_content" android:layout_height="wrap_content"> <com.baidu.mapapi.map.mapview android:id="@+id/bmapView" android:layout_width="match_parent" android:layout_height="match_parent" android:clickable="true"> </com.baidu.mapapi.map.mapview></textview></linearlayout>
<!--{cke_protected}{C}%3C!%2D%2D%3Fxml%20version%3D%221.0%22%20encoding%3D%22utf-8%22%3F%2D%2D%3E--> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.jared.embaidumapstudy"> <permission android:name="android.permission.BAIDU_LOCATION_SERVICE"> <uses-permission android:name="android.permission.BAIDU_LOCATION_SERVICE"> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"> <uses-permission android:name="android.permission.INTERNET"> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"> <uses-permission android:name="com.android.launcher.permission.READ_SETTINGS"> <uses-permission android:name="android.permission.WAKE_LOCK"> <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"> <uses-permission android:name="android.permission.ACCESS_GPS"> <uses-permission android:name="android.permission.READ_PHONE_STATE"> <uses-permission android:name="android.permission.READ_CONTACTS"> <uses-permission android:name="android.permission.CALL_PHONE"> <uses-permission android:name="android.permission.READ_SMS"> <uses-permission android:name="android.permission.SEND_SMS"> <uses-permission android:name="android.permission.CAMERA"> <uses-permission android:name="android.permission.RECORD_AUDIO"> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"> <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"> <uses-permission android:name="android.permission.BROADCAST_STICKY"> <uses-permission android:name="android.permission.WRITE_SETTINGS"> <!--{cke_protected}{C}%3C!%2D%2D%20%E6%9D%A5%E7%94%B5%E6%B6%88%E9%9F%B3%20%2D%2D%3E--> <uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"> <uses-permission android:name="android.permission.READ_PHONE_STATE"> <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS"> <application android:name=".DemoApplication" android:allowbackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:supportsrtl="true" android:theme="@style/AppTheme"> <meta-data android:name="com.baidu.lbsapi.API_KEY" android:value="lMYt4e8sq4jPE6GMGLwtra4z"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN"> <category android:name="android.intent.category.LAUNCHER"> </category></action></intent-filter> </activity> </meta-data></application> </uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></permission></manifest>
package com.jared.embaidumapstudy; /** * Created by jared on 16/2/20. */ import android.app.Application; import com.baidu.mapapi.SDKInitializer; public class DemoApplication extends Application { @Override public void onCreate() { super.onCreate(); SDKInitializer.initialize(this); } }
package com.jared.embaidumapstudy; import android.app.Activity; import android.os.Bundle; import com.baidu.mapapi.map.BaiduMap; import com.baidu.mapapi.map.MapView; public class MainActivity extends Activity { private MapView baiduMapView; private BaiduMap mBaiduMap; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); baiduMapView = (MapView)findViewById(R.id.bmapView); mBaiduMap = baiduMapView.getMap(); } @Override protected void onDestroy() { super.onDestroy(); baiduMapView.onDestroy(); } @Override protected void onResume() { super.onResume(); baiduMapView.onResume(); } @Override protected void onPause() { super.onPause(); baiduMapView.onPause(); } }
折騰了好久終於把百度地圖搞出來了。既然地圖有了,那接下來就是要定位了。下面來實現下定位的功能和自定義縮放。修改代碼如下:
package com.jared.embaidumapstudy; import android.app.Activity; import android.content.Context; import android.location.Location; import android.location.LocationManager; import android.os.Bundle; import android.util.Log; import android.widget.Toast; import com.baidu.mapapi.map.BaiduMap; import com.baidu.mapapi.map.BitmapDescriptor; import com.baidu.mapapi.map.BitmapDescriptorFactory; import com.baidu.mapapi.map.MapStatusUpdate; import com.baidu.mapapi.map.MapStatusUpdateFactory; import com.baidu.mapapi.map.MapView; import com.baidu.mapapi.map.MyLocationConfiguration; import com.baidu.mapapi.map.MyLocationData; import java.util.List; public class MainActivity extends Activity { private MapView baiduMapView; private BaiduMap mBaiduMap; private LocationManager locationManager; private String provider; BitmapDescriptor mCurrentMarker; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); baiduMapView = (MapView)findViewById(R.id.bmapView); mBaiduMap = baiduMapView.getMap(); locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE); ListproviderList = 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 { Toast.makeText(getApplicationContext(), "No location provider to use", Toast.LENGTH_LONG).show(); return; } provider = LocationManager.NETWORK_PROVIDER; Location location = locationManager.getLastKnownLocation(provider); if(location != null) { navigateTo(location); } } private void navigateTo(Location location) { // 開啟定位圖層 mBaiduMap.setMyLocationEnabled(true); //.accuracy(location.getRadius()) MyLocationData locData = new MyLocationData.Builder() .accuracy(location.getAccuracy()) // 此處設置開發者獲取到的方向信息,順時針0-360 .direction(100).latitude(location.getLatitude()) .longitude(location.getLongitude()).build(); Log.d("Location", String.valueOf(location.getLatitude())+":" +String.valueOf(location.getLongitude())); // 設置定位數據 mBaiduMap.setMyLocationData(locData); // 設置定位圖層的配置(定位模式,是否允許方向信息,用戶自定義定位圖標) mCurrentMarker = BitmapDescriptorFactory .fromResource(R.drawable.icon_geo); MyLocationConfiguration config = new MyLocationConfiguration( MyLocationConfiguration.LocationMode.FOLLOWING, true, mCurrentMarker); mBaiduMap.setMyLocationConfigeration(config); perfomZoom(15); } private void perfomZoom(int zoom) { float zoomLevel = Float.parseFloat(String.valueOf(zoom)); MapStatusUpdate u = MapStatusUpdateFactory.zoomTo(zoomLevel); mBaiduMap.animateMapStatus(u); } @Override protected void onDestroy() { super.onDestroy(); baiduMapView.onDestroy(); } @Override protected void onResume() { super.onResume(); baiduMapView.onResume(); } @Override protected void onPause() { super.onPause(); baiduMapView.onPause(); } }
如圖已經很明顯地顯示了當前的位置。
百度地圖還有好多的內容可以學習,這裡是初體驗,就簡單學習這些了。
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