Android 基于百度定位sdk ，获取城市，使用json解析天气

关于百度定位sdk的使用 参考官方文档 https://lbsyun.baidu.com/index.php?title=android-locsdk

JSON 解析 参考了 https://blog.csdn.net/double2hao/article/details/68482900 

使用的 天气接口 http://wthrcdn.etouch.cn/weather_mini?city=北京

demo下载：https://download.csdn.net/download/weixin_42447313/10483975

实现后的效果

布局代码

xml version="1.0" encoding="utf-8"?>
xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.yazz.yaweather.MainActivity">

            android:id="@+id/location_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:textSize="16dp" />

            android:id="@+id/et1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentStart="true"
        android:layout_below="@+id/location_view"
        android:hint="请输入城市名称:" />

            android:id="@+id/rl1"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:layout_below="@id/et1"
        android:layout_marginTop="20dp">

                    android:id="@+id/weather_view"
            android:layout_width="192dp"
            android:layout_height="match_parent"
            android:gravity="center"
            android:textSize="16dp" />

                    android:id="@+id/iv1"
            android:layout_width="192dp"
            android:layout_height="match_parent"
            android:layout_toRightOf="@+id/weather_view"
            />

    

            android:id="@+id/rl2"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:layout_below="@id/rl1"
        android:layout_marginTop="20dp">

                    android:id="@+id/weather1_view"
            android:layout_width="192dp"
            android:layout_height="match_parent"
            android:gravity="center"
            android:textSize="16dp" />
                    android:id="@+id/iv2"
            android:layout_width="192dp"
            android:layout_height="match_parent"
            android:layout_toRightOf="@+id/weather1_view"
            />

    

            android:layout_width="match_parent"
        android:layout_height="100dp"
        android:layout_below="@id/rl2"
        android:layout_marginTop="20dp">

                    android:id="@+id/weather2_view"
            android:layout_width="192dp"
            android:layout_height="match_parent"
            android:gravity="center"
            android:textSize="16dp" />

                    android:id="@+id/iv3"
            android:layout_width="192dp"
            android:layout_height="match_parent"
            android:layout_toRightOf="@+id/weather2_view"
            />
    


            android:id="@+id/start_location"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentStart="true"
        android:text="定位并获取天气" />

            android:id="@+id/start_weather"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:layout_alignTop="@+id/start_location"
        android:text="获取指定位置天气" />

定位代码

public Context context;
public static String City= "";
public LocationClient mLocationClient = null;    //LocationClient类是定位SDK的核心类
public BDLocationListener myListener = new MyLocationListener();
public BDLocationUtils(Context context){
    this.context = context;
}

public void doLocation(){
    //声明LocationClient类
    mLocationClient = new LocationClient(context.getApplicationContext());
    //注册监听函数
    mLocationClient.registerLocationListener( myListener );
    //初始化定位
    initLocation(); //调用initLocation方法
}

private void initLocation(){
    LocationClientOption option = new LocationClientOption();
    option.setLocationMode(LocationClientOption.LocationMode.Hight_Accuracy);
    //可选，默认高精度，设置定位模式，高精度，低功耗，仅设备
    option.setIsNeedAddress(true);
    //可选，设置是否需要地址信息，默认不需要
    option.setOpenGps(true);
    //可选，默认false,设置是否使用gps
    mLocationClient.setLocOption(option);
}

private class MyLocationListener implements BDLocationListener {
        @Override
        public void onReceiveLocation(BDLocation location) {
            //获取定位结果
            StringBuffer sb = new StringBuffer(256);
            sb.append(location.getCity()); //获取城市
            City = location.getCity().replace("市","");//replace 切割字符 去掉“市”
        }
    }
}

解决安卓6.0以上权问题：

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
    if (checkSelfPermission(Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED ||
            checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED ||
            checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        // 申请一个（或多个）权限，并提供用于回调返回的获取码（用户定义）
        requestPermissions(new String[]{
                Manifest.permission.READ_PHONE_STATE,
                Manifest.permission.ACCESS_COARSE_LOCATION,
                Manifest.permission.ACCESS_FINE_LOCATION,
                Manifest.permission.READ_EXTERNAL_STORAGE,
                Manifest.permission.WRITE_EXTERNAL_STORAGE,}, BAIDU_READ_PHONE_STATE);
    }
    bdLocationUtils.doLocation();//开启定位
    bdLocationUtils.mLocationClient.start();//开始定位
    textView.setText("当前位置:"+BDLocationUtils.City);

} else {

    Log.e("Permissions", "已经有权限了");
}

@Override
public void onRequestPermissionsResult(int requestCode,String[] permissions, int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions,grantResults);
    switch(requestCode) {
        //requestCode即所声明的权限获取码，在checkSelfPermission时传入
        case 1:
            BAIDU_READ_PHONE_STATE:
            if(grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                //获取到权限，做相应处理
                //调用定位SDK应确保相关权限均被授权，否则会引起定位失败
                bdLocationUtils.doLocation();//开启定位
                bdLocationUtils.mLocationClient.start();//开始定位
            } else{
                //没有获取到权限，做特殊处理
                Log.e("Permissions","没有权限定位失败");
            }
            break;
        default:
            break;
    }
}

JSON解析

mRequestQueue = Volley.newRequestQueue(this);
final String city = BDLocationUtils.City;
String city_encode = null;
try {
    city_encode = URLEncoder.encode(city,"utf-8");//城市名转为中文

} catch (UnsupportedEncodingException e) {
    e.printStackTrace();
}
JsonObjectRequest mJsonObjectRequest = new JsonObjectRequest(
    "http://wthrcdn.etouch.cn/weather_mini?city="+city_encode,// 根据城市名获取天气JSon

        null,
        new Response.Listener< JSONObject>() {
            @Override
            public void onResponse(JSONObject response) {
                try {
                    JSONObject data = new JSONObject(response.getString("data"));
                    JSONArray forecast = data.getJSONArray("forecast");
                    JSONObject todayWeather = forecast.getJSONObject(0);


                    String wendu = data.getString("wendu") + "\n";
                    //String ganmao = data.getString("ganmao") + "\n";
                    String high = todayWeather.getString("high") + "\n";
                    String low = todayWeather.getString("low") + "~";
                    String date = todayWeather.getString("date") + "";
                    String type = todayWeather.getString("type")+"\n";
                    String city = data.getString("city") + "\n";
                    textView1.setText(city+date+type+"实时温度:"+wendu + low + high );

天气图标：

if (todayWeather.getString("type").toString().contains("多云")){
    imageView1.setImageResource(R.drawable.duoyun1);
}else if(todayWeather.getString("type").toString().contains("晴")){
    imageView1.setImageResource(R.drawable.qingtian);
}else if(todayWeather.getString("type").toString().contains("阴")){
    imageView1.setImageResource(R.drawable.yintian);