安卓学习之学生签到APP（一）
一、学生定位签到页面
具体实现步骤：
1.1 高德地图申请key
1、创建新应用
进入高德地图api控制台，创建一个新应用。如果您之前已经创建过应用，可直接跳过这个步骤。
2、添加新Key
在创建的应用上点击”添加新Key”按钮，在弹出的对话框中，依次：输入应用名名称，选择绑定的服务为“Android平台SDK”，输入发布版安全码 SHA1、调试版安全码 SHA1、及 Package，如下图所示：
附：SHA1码的获取
1.2 实现高德地图自动定位—准备工作
1、下载jar包，导入jar包
首先去高德地图API官网下载好相关SDK jar文件，将下载的定位 SDK jar 文件复制到工程（此处截图以官方示例Demo为例子）的 libs 目录下，如果有老版本定位 jar 文件存在，请删除。
注：
- 第一个是2D地图的jar包，因为最后定位以后我要在地图上标出来位置
- 第二个是用于定位的jar包
对于每个jar文件，右键-选择Add As Library，导入到工程中。或者使用菜单栏 选择 File ->Project Structure->Modules-> Dependencies。点击绿色的加号选择File dependency. 然后选择要添加的jar包即可，此时build.gradle中会自动生成如下信息。
2、配置AndroidMainfest.xml文件
<!-- 申请必要的权限--> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> <uses-permission android:name="android.permission.READ_PHONE_STATE" /> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" /> <uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" /> <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" /> <application android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <!--设置key--> <meta-data android:name="com.amap.api.v2.apikey" android:value="这里填写第一步你申请的那个key" /> <!--声明定位service--> <service android:name="com.amap.api.location.APSService"></service> </application>
AndroidMainfest.xml
3、Activity的布局文件
<com.amap.api.maps2d.MapView android:id="@+id/map_view" android:layout_width="match_parent" android:layout_height="match_parent" > </com.amap.api.maps2d.MapView> <Button android:id="@+id/requet" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="签到" android:layout_alignParentTop="true" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" />
activity_main
4.
1 package com.cqvie.android_map; 2 3 import android.content.DialogInterface; 4 import android.icu.text.SimpleDateFormat; 5 import android.os.Bundle; 6 import android.os.Handler; 7 import android.os.Message; 8 import android.support.v7.app.AlertDialog; 9 import android.support.v7.app.AppCompatActivity; 10 import android.util.Log; 11 import android.view.View; 12 import android.widget.Button; 13 import android.widget.Toast; 14 15 import com.amap.api.location.AMapLocation; 16 import com.amap.api.location.AMapLocationClient; 17 import com.amap.api.location.AMapLocationClientOption; 18 import com.amap.api.location.AMapLocationListener; 19 import com.amap.api.maps2d.AMap; 20 import com.amap.api.maps2d.CameraUpdateFactory; 21 import com.amap.api.maps2d.LocationSource; 22 import com.amap.api.maps2d.MapView; 23 import com.amap.api.maps2d.UiSettings; 24 import com.amap.api.maps2d.model.BitmapDescriptorFactory; 25 import com.amap.api.maps2d.model.LatLng; 26 import com.amap.api.maps2d.model.MarkerOptions; 27 import com.cqvie.options.HttpUtilsHttpURLConnection; 28 29 import org.json.JSONException; 30 import org.json.JSONObject; 31 32 import java.util.Date; 33 import java.util.HashMap; 34 import java.util.Map; 35 36 37 public class MainActivity extends AppCompatActivity implements LocationSource, AMapLocationListener { 38 39 private MapView mapView = null; 40 private AMap aMap; 41 private Button request; 42 private AMapLocationClient mLocationClient; 43 private AMapLocationClientOption mLocationOption; 44 private OnLocationChangedListener mListener; 45 //标识，用于判断是否只显示一次定位信息和用户重新定位 46 private boolean isFirstLoc = true; 47 String date=null; 48 49 @Override 50 protected void onCreate(Bundle savedInstanceState) { 51 super.onCreate(savedInstanceState); 52 setContentView(R.layout.activity_main); 53 54 //获取地图控件引用 55 mapView = (MapView) findViewById(R.id.map_view); 56 //在activity执行onCreate时执行mMapView.onCreate(savedInstanceState)，实现地图生命周期管理 57 mapView.onCreate(savedInstanceState); 58 //获取签到按钮 59 request = (Button) findViewById(R.id.requet); 60 61 init(); 62 //初始化定位 63 mLocationClient = new AMapLocationClient(getApplicationContext()); 64 mLocationClient.setLocationListener(this); 65 //初始化定位参数 66 mLocationOption = new AMapLocationClientOption(); 67 // mLocationOption.setLocationMode(AMapLocationClientOption.AMapLocationMode.Device_Sensors); 68 mLocationOption.setLocationMode(AMapLocationClientOption.AMapLocationMode.Hight_Accuracy); 69 //设置是否返回地址信息（默认返回地址信息） 70 mLocationOption.setNeedAddress(true); 71 //设置是否只定位一次 72 mLocationOption.setOnceLocation(true); 73 //设置是否强制刷新WiFi 74 mLocationOption.setWifiScan(true); 75 //设置定位间隔,单位毫秒,默认为2000ms 76 //mLocationOption.setInterval(2000); 77 //给定位客户端对象设置定位参数 78 mLocationClient.setLocationOption(mLocationOption); 79 //启动定位 80 mLocationClient.startLocation(); 81 } 82 83 private void init() { 84 if (aMap == null) { 85 aMap = mapView.getMap(); 86 UiSettings settings = aMap.getUiSettings(); 87 aMap.setLocationSource(this); 88 settings.setMyLocationButtonEnabled(true); 89 aMap.setMyLocationEnabled(true); 90 } 91 } 92 93 94 @Override 95 protected void onDestroy() { 96 super.onDestroy(); 97 //在activity执行onDestroy时执行mMapView.onDestroy()，实现地图生命周期管理 98 mapView.onDestroy(); 99 //mLocationClient.stopLocation(); 100 mLocationClient.onDestroy(); 101 } 102 103 @Override 104 protected void onResume() { 105 super.onResume(); 106 //在activity执行onResume时执行mMapView.onResume ()，实现地图生命周期管理 107 mapView.onResume(); 108 } 109 110 @Override 111 protected void onPause() { 112 super.onPause(); 113 //在activity执行onPause时执行mMapView.onPause ()，实现地图生命周期管理 114 mapView.onPause(); 115 } 116 117 @Override 118 protected void onSaveInstanceState(Bundle outState) { 119 super.onSaveInstanceState(outState); 120 //在activity执行onSaveInstanceState时执行mMapView.onSaveInstanceState (outState)，实现地图生命周期管理 121 mapView.onSaveInstanceState(outState); 122 } 123 124 // @RequiresApi(api = Build.VERSION_CODES.N) 125 @Override 126 public void onLocationChanged(final AMapLocation aMapLocation) { 127 128 if (aMapLocation!=null){ 129 if (aMapLocation.getErrorCode()==0){ 130 //定位成功回调信息，设置相关消息 131 aMapLocation.getLocationType(); 132 aMapLocation.getLatitude();//获取纬度 133 aMapLocation.getLongitude();//获取经度 134 aMapLocation.getAccuracy();//获取精度信息 135 SimpleDateFormat df = new SimpleDateFormat("HH:mm:ss"); 136 Date nowdate = new Date(aMapLocation.getTime()); 137 date = df.format(nowdate);//定位时间 138 aMapLocation.getAddress();//地址，如果option中设置isNeedAddress为false，则没有此结果，网络定位结果中会有地址信息，GPS定位不返回地址信息。 139 aMapLocation.getCountry();//国家信息 140 aMapLocation.getProvince();//省信息 141 aMapLocation.getCity();//城市信息 142 aMapLocation.getDistrict();//城区信息 143 aMapLocation.getStreet();//街道信息 144 aMapLocation.getStreetNum();//街道门牌号信息 145 //aMapLocation.getBuildingId();//获取当前室内定位的建筑物Id 146 //aMapLocation.getAccuracy();//获取精度信息 147 aMapLocation.getPoiName(); 148 aMapLocation.getAoiName(); 149 150 //Log.d("why", String.valueOf(aMapLocation.getAoiName())); 151 // if (isFirstLoc){ 152 //设置缩放级别 153 aMap.moveCamera(CameraUpdateFactory.zoomTo(17)); 154 //将地图移动到定位点 155 aMap.moveCamera(CameraUpdateFactory.changeLatLng(new LatLng(aMapLocation.getLatitude(), aMapLocation.getLongitude()))); 156 //点击定位按钮 能够将地图的中心移动到定位点 157 mListener.onLocationChanged(aMapLocation); 158 //获取定位信息 159 final StringBuffer buffer = new StringBuffer(); 160 buffer.append(aMapLocation.getCountry() + "" 161 //+ aMapLocation.getProvince() + "" 162 + aMapLocation.getCity() + "" 163 // + aMapLocation.getProvince() + "" 164 + aMapLocation.getDistrict() + "" 165 + aMapLocation.getStreet() + "" 166 + aMapLocation.getStreetNum()); 167 168 169 Toast.makeText(getApplicationContext(), buffer.toString() + aMapLocation.getAoiName(), Toast.LENGTH_LONG).show(); 170 //Log.d("tzk",buffer.toString()); 171 172 isFirstLoc = false; 173 } 174 } 175 else { 176 Log.d("why", String.valueOf(aMapLocation.getErrorCode())); 177 //显示错误信息ErrCode是错误码，errInfo是错误信息，详见错误码表。 178 Log.e("AmapError", "location Error, ErrCode:" 179 + aMapLocation.getErrorCode() + ", errInfo:" 180 + aMapLocation.getErrorInfo()); 181 Toast.makeText(getApplicationContext(), "定位失败", Toast.LENGTH_LONG).show(); 182 } 183 184 request.setOnClickListener(new View.OnClickListener() { 185 @Override 186 public void onClick(View view) { 187 new AlertDialog.Builder(MainActivity.this) 188 .setTitle("签到") 189 .setMessage(date+ "\n" + aMapLocation.getAoiName()) 190 .setPositiveButton("确定？", new DialogInterface.OnClickListener() { 191 @Override 192 public void onClick(DialogInterface dialogInterface, int i) { 193 //新页面接收数据 194 Bundle bundle = MainActivity.this.getIntent().getExtras(); 195 //接收name值 196 String name = bundle.getString("name"); 197 //Toast.makeText(MainActivity.this,date,Toast.LENGTH_LONG).show(); 198 signClickListen(date,name,aMapLocation.getAoiName()); 199 200 } 201 }) 202 .show(); 203 } 204 }); 205 } 206 207 //激活定位 208 @Override 209 public void activate(OnLocationChangedListener onLocationChangedListener) { 210 mListener = onLocationChangedListener; 211 } 212 213 @Override 214 public void deactivate() { 215 mListener = null; 216 } 217 218 /** 219 * 签到点击事件 220 */ 221 public void signClickListen(final String date,final String name,final String signaddress) { 222 new Thread(new Runnable() { 223 @Override 224 public void run() { 225 String url = HttpUtilsHttpURLConnection.BASE_URL + "/SignServlet"; 226 Map<String, String> params = new HashMap<String, String>(); 227 Message msg = new Message(); 228 Bundle data = new Bundle(); 229 params.put("signtime",date); 230 params.put("name", name); 231 params.put("signaddress", signaddress); 232 String result = HttpUtilsHttpURLConnection.getContextByHttp(url, params); 233 msg.what = 0x12; 234 data.putString("result", result); 235 msg.setData(data); 236 hander.sendMessage(msg); 237 } 238 Handler hander = new Handler() { 239 @Override 240 public void handleMessage(Message msg) { 241 if (msg.what == 0x12) { 242 Bundle data = msg.getData(); 243 String key = data.getString("result");//得到json返回的json 244 // Toast.makeText(MainActivity.this,key,Toast.LENGTH_LONG).show(); 245 try { 246 JSONObject json = new JSONObject(key); 247 String result = (String) json.get("result"); 248 if ("success".equals(result)) { 249 Toast.makeText(MainActivity.this,name + "签到成功！", Toast.LENGTH_SHORT).show(); 250 251 } else if ("error".equals(result)) { 252 Toast.makeText(MainActivity.this,name + "签到失败！", Toast.LENGTH_SHORT).show(); 253 } 254 } catch (JSONException e) { 255 e.printStackTrace(); 256 } 257 } 258 } 259 }; 260 }).start(); 261 } 262 }
MainActivity
版权声明：本文为tanzk原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。