我使用我想从API获取特定天气一部分,我下面的代码,所以我使用JSON我无法JSObject转换API密钥
这里下面链接的https://openweathermap.org/current
的API在这里我想天气部分类型的
http://samples.openweathermap.org/data/2.5/weather?q=London,uk&appid=b1b15e88fa797225412429c1c50c122a1
值null org.json.JSONObject $ 1位API密钥无法被转换为JSONObject的
我使用的AsyncTask
我的MainActivity在这里
公共类MainActivity扩展AppCompatActivity {
String data ;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
DownloadWeatherData downloadWeatherData = new DownloadWeatherData();
try {
downloadWeatherData.execute("http://samples.openweathermap.org/data/2.5/weather?q=London,uk&appid=b1b15e88fa797225412429c1c50c122a1").get();
} catch (Exception e) {
e.printStackTrace();
}
}
}
这是我的java文件
公共类DownloadWeatherData扩展AsyncTask {
String weatherdata;
@Override
protected String doInBackground(String... urls)
{
try {
URL url = new URL(urls[0]);
HttpURLConnection connection =(HttpURLConnection) url.openConnection();
connection.connect();
InputStreamReader inputStreamReader = new InputStreamReader(connection.getInputStream());
int data = inputStreamReader.read();
while(data!=-1)
{
char str = (char)data;
weatherdata+=str;
data = inputStreamReader.read();
}
return weatherdata;
}
catch (MalformedURLException e)
{
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String s)
{
super.onPostExecute(s);
try {
JSONObject jsonObject = new JSONObject(s);
String info = jsonObject.getString("weather");
Log.d("weatherpart",info);
} catch (JSONException e) {
e.printStackTrace();
}
}
}
我认为改造是HttpURLConnection的替代 –