获取位置信息

添加权限：

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

动态权限

// 检查权限
int permission1 = ActivityCompat.checkSelfPermission(getApplicationContext(),
Manifest.permission.ACCESS_COARSE_LOCATION);
int permission2 = ActivityCompat.checkSelfPermission(getApplicationContext(),
Manifest.permission.ACCESS_FINE_LOCATION);
// 申请权限
if (permission1 == -1 && permission2 == -1) {
    ActivityCompat.requestPermissions(this,new String[{Manifest.permission.ACCESS_COARSE_LOCATION,
    Manifest.permission.ACCESS_FINE_LOCATION},12);
}        

获取位置信息：

Location gpsLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if(gpsLocation != null) {
    Log.e(TAG,"GPS : 经度 == " + gpsLocation.getLongitude() + "     纬度 == " + gpsLocation.getLatitude());
} else {
    Location netWorkLocation = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
    if(netWorkLocation != null) {
        Log.e(TAG,"NetWork : 经度 == " + netWorkLocation .getLongitude() +
                                "     纬度 == " + netWorkLocation .getLatitude());
    }
}

根据经纬度去请求百度地图或者高德地图的WebApi获取位置信息：

百度地图
百度地图请求返回错误：{"status":102,"message":"MCODE参数不存在，mobile类型mcode参数必需"}

解决方案：
1.给接口传入一个安全码的参数
http://api.map.baidu.com/telematics/v3/weather?location=北京&output=json&ak=94Tmshjhp03oul7xy95Gu3wwHkjGZvkk&mcode=EE:0C:C8:50:54:53:96:5A:55:8C:23:2F:93:7E:EB:AE:D8:C8:1B:F1;com.example.tangdekun.androidannotationsdemo
斜体部分为安全码参数设置
2.安全码的获取
在百度开发者平台的“我的应用”进入创建的应用即可看到安全码