本文介绍了我如何进行切换以根据json中的天气ID更改图片的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个气象应用程序，该应用程序缺少根据天气情况更改图标/图片的功能，我已经搜索了数小时，但未找到解决方案.我正在使用openweathermap api，并希望做出一个switch语句来根据天气ID改变我的图片.
I have a weather app that is lacking changing icons/pictures depending on what the weather is, i have searched for hours but not found a solution. Im using openweathermap api, and would like to make a switch statement that changes my picture depending on what the weather id is.
这是我的WeatherActivity.java.
package com.inducesmile.androidweatherapp;
import android.Manifest;
import android.app.Service;
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.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.text.Html;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import com.github.pavlospt.CircleView;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.inducesmile.androidweatherapp.adapters.RecyclerViewAdapter;
import com.inducesmile.androidweatherapp.database.DatabaseQuery;
import com.inducesmile.androidweatherapp.entity.WeatherObject;
import com.inducesmile.androidweatherapp.helpers.CustomSharedPreference;
import com.inducesmile.androidweatherapp.helpers.Helper;
import com.inducesmile.androidweatherapp.json.FiveDaysForecast;
import com.inducesmile.androidweatherapp.json.FiveWeathers;
import com.inducesmile.androidweatherapp.json.Forecast;
import com.inducesmile.androidweatherapp.json.LocationMapObject;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import java.util.Locale;
public class WeatherActivity extends AppCompatActivity implements LocationListener {
private static final String TAG = WeatherActivity.class.getSimpleName();
private RecyclerView recyclerView;
private RecyclerViewAdapter recyclerViewAdapter;
private TextView cityCountry;
private TextView currentDate;
private ImageView weatherImage;
private CircleView circleTitle;
private TextView windResult;
private TextView humidityResult;
private RequestQueue queue;
private LocationMapObject locationMapObject;
private LocationManager locationManager;
private Location location;
private final int REQUEST_LOCATION = 200;
private CustomSharedPreference sharedPreference;
private String isLocationSaved;
private DatabaseQuery query;
private String apiUrl;
private ImageView cat;
@Override
protected void onCreate(Bundle savedInstanceState) {
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_weather);
ActionBar actionBar = getSupportActionBar();
if(actionBar != null){
actionBar.hide();
}
queue = Volley.newRequestQueue(this);
query = new DatabaseQuery(WeatherActivity.this);
sharedPreference = new CustomSharedPreference(WeatherActivity.this);
isLocationSaved = sharedPreference.getLocationInPreference();
cityCountry = (TextView)findViewById(R.id.city_country);
currentDate = (TextView)findViewById(R.id.current_date);
weatherImage = (ImageView)findViewById(R.id.weather_icon);
circleTitle = (CircleView)findViewById(R.id.weather_result);
windResult = (TextView)findViewById(R.id.wind_result);
humidityResult = (TextView)findViewById(R.id.humidity_result);
cat = (ImageView)findViewById(R.id.cat);
locationManager = (LocationManager) getSystemService(Service.LOCATION_SERVICE);
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(WeatherActivity.this, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION}, REQUEST_LOCATION);
} else {
if(isLocationSaved.equals("")){
// make API call with longitude and latitude
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 100, 2, this);
if (locationManager != null) {
location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
apiUrl = "http://api.openweathermap.org/data/2.5/weather?lat="+location.getLatitude()+"&lon="+location.getLongitude()+"&APPID="+Helper.API_KEY+"&units=metric";
makeJsonObject(apiUrl);
}
}else{
// make API call with city name
String storedCityName = sharedPreference.getLocationInPreference();
//String storedCityName = "Enugu";
System.out.println("Stored city " + storedCityName);
String[] city = storedCityName.split(",");
if(!TextUtils.isEmpty(city[0])){
System.out.println("Stored city " + city[0]);
String url ="http://api.openweathermap.org/data/2.5/weather?q="+city[0]+"&APPID="+Helper.API_KEY+"&units=metric";
makeJsonObject(url);
}
}
}
ImageButton addLocation = (ImageButton) findViewById(R.id.add_location);
addLocation.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent addLocationIntent = new Intent(WeatherActivity.this, AddLocationActivity.class);
startActivity(addLocationIntent);
}
});
GridLayoutManager gridLayoutManager = new GridLayoutManager(WeatherActivity.this, 4);
}
private void makeJsonObject(final String apiUrl){
StringRequest stringRequest = new StringRequest(Request.Method.GET, apiUrl, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
Log.d(TAG, "Response " + response);
GsonBuilder builder = new GsonBuilder();
Gson gson = builder.create();
locationMapObject = gson.fromJson(response, LocationMapObject.class);
if (null == locationMapObject) {
Toast.makeText(getApplicationContext(), "Nothing was returned", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(getApplicationContext(), "Response Good", Toast.LENGTH_LONG).show();
String city = locationMapObject.getName() + ", " + locationMapObject.getSys().getCountry();
String todayDate = getTodayDateInStringFormat();
Long tempVal = Math.round(Math.floor(Double.parseDouble(locationMapObject.getMain().getTemp())));
String weatherTemp = String.valueOf(tempVal) + "°";
String weatherDescription = Helper.capitalizeFirstLetter(locationMapObject.getWeather().get(0).getDescription());
String windSpeed = locationMapObject.getWind().getSpeed();
String humidityValue = locationMapObject.getMain().getHumudity();
//save location in database
if(apiUrl.contains("lat")){
query.insertNewLocation(locationMapObject.getName());
}
// populate View data
cityCountry.setText(Html.fromHtml(city));
currentDate.setText(Html.fromHtml(todayDate));
circleTitle.setTitleText(Html.fromHtml(weatherTemp).toString());
circleTitle.setSubtitleText(Html.fromHtml(weatherDescription).toString());
windResult.setText(Html.fromHtml(windSpeed) + " km/h");
humidityResult.setText(Html.fromHtml(humidityValue) + " %");
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.d(TAG, "Error " + error.getMessage());
}
});
queue.add(stringRequest);
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
if (requestCode == REQUEST_LOCATION) {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED && grantResults[1] == PackageManager.PERMISSION_GRANTED) {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
//make api call
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 100, 2, this);
if (locationManager != null) {
location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
apiUrl = "http://api.openweathermap.org/data/2.5/weather?lat="+location.getLatitude()+"&lon="+location.getLongitude()+"&APPID="+Helper.API_KEY+"&units=metric";
makeJsonObject(apiUrl);
}else{
apiUrl = "http://api.openweathermap.org/data/2.5/weather?lat=51.5074&lon=0.1278&APPID="+Helper.API_KEY+"&units=metric";
makeJsonObject(apiUrl);
}
}
}else{
Toast.makeText(WeatherActivity.this, getString(R.string.permission_notice), Toast.LENGTH_LONG).show();
}
}
}
@Override
public void onLocationChanged(Location location) {
this.location = location;
}
@Override
public void onStatusChanged(String s, int i, Bundle bundle) {
}
@Override
public void onProviderEnabled(String s) {
}
@Override
public void onProviderDisabled(String provider) {
if (provider.equals(LocationManager.GPS_PROVIDER)) {
showGPSDisabledAlertToUser();
}
}
private void showGPSDisabledAlertToUser() {
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
alertDialogBuilder.setMessage("GPS is disabled in your device. Would you like to enable it?")
.setCancelable(false)
.setPositiveButton("Goto Settings Page To Enable GPS", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
Intent callGPSSettingIntent = new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(callGPSSettingIntent);
}
});
alertDialogBuilder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog alert = alertDialogBuilder.create();
alert.show();
}
private String getTodayDateInStringFormat(){
Calendar c = Calendar.getInstance();
SimpleDateFormat df = new SimpleDateFormat("E, d MMMM", Locale.getDefault());
return df.format(c.getTime());
}
private String convertTimeToDay(String time){
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:SSSS", Locale.getDefault());
String days = "";
try {
Date date = format.parse(time);
System.out.println("Our time " + date);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
days = calendar.getDisplayName(Calendar.DAY_OF_WEEK, Calendar.SHORT, Locale.getDefault());
System.out.println("Our time " + days);
} catch (ParseException e) {
e.printStackTrace();
}
return days;
}
}
这是WeatherActivity.xml:
Here's the WeatherActivity.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="@color/colorBlack"
tools:context="com.inducesmile.androidweatherapp.WeatherActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="8"
android:orientation="vertical">
<TextView
android:id="@+id/city_country"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="@dimen/_16sdp"
android:text="@string/city_country"
android:textColor="@color/colorWhite"
android:textSize="@dimen/_24sdp" />
<TextView
android:id="@+id/current_date"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="@dimen/_8sdp"
android:text="@string/date_today"
android:textColor="@color/colorWhite"
android:textSize="@dimen/_14sdp" />
<com.github.pavlospt.CircleView
android:id="@+id/weather_result"
android:layout_width="@dimen/_150sdp"
android:layout_height="@dimen/_150sdp"
android:layout_gravity="center_horizontal"
android:layout_marginTop="@dimen/_8sdp"
app:cv_backgroundColorValue="@color/colorWhite"
app:cv_fillColor="@color/colorBlack"
app:cv_strokeColorValue="@color/colorWhite"
app:cv_subtitleSize="@dimen/_12sdp"
app:cv_subtitleText="@string/weather_information"
app:cv_titleColor="@color/colorWhite"
app:cv_titleSize="@dimen/_50sdp"
app:cv_titleSubtitleSpace="40"
app:cv_titleText="@string/current_temperature" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="@dimen/_12sdp"
android:orientation="horizontal"
android:weightSum="3">
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:paddingLeft="@dimen/_16sdp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/wind"
android:textColor="@color/colorSubTitle"
android:textSize="@dimen/_14sdp"
android:textStyle="bold" />
<TextView
android:id="@+id/wind_result"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/_4sdp"
android:text="@string/wind_speed"
android:textColor="@color/colorWhite"
android:textSize="@dimen/_14sdp" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical">
<ImageButton
android:id="@+id/add_location"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="@dimen/_12sdp"
android:background="@android:color/transparent"
android:elevation="@dimen/_4sdp"
android:src="@drawable/cross" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:paddingRight="@dimen/_16sdp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:text="@string/humidity"
android:textColor="@color/colorSubTitle"
android:textSize="@dimen/_14sdp"
android:textStyle="bold" />
<TextView
android:id="@+id/humidity_result"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="@dimen/_4sdp"
android:text="@string/humidity_rate"
android:textColor="@color/colorWhite"
android:textSize="@dimen/_14sdp" />
</LinearLayout>
</LinearLayout>
推荐答案
openweather api json根据给定的天气返回图标字符串.使用带有URL的代码来加载图像.
openweather api json returns a icon string according to the given weather. Use the code with URL to loads images.
{
"coord": {
"lon": -0.13,
"lat": 51.51
},
"weather": [
{
"id": 500,
"main": "Rain",
"description": "light rain",
"icon": "10n"
}
],
此链接中的更多信息
进一步编辑您的答案，您不需要使用这种方法的switch语句-
further edit for your answer, you do not need a switch statement with this approach -
private static HashMap<String,String> iconMap = new HashMap<String,String>() {
put("icon code from json", "path to your icon");
}
//check where the icon is in json callback, not sure about this call ;)
String icon = locationMapObject.getWeather().get(0).getIcon();
if(iconMap.contains(icon){
//update your TextView with icon
}
这篇关于我如何进行切换以根据json中的天气ID更改图片的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！