Android FATAL EXCEPTION异步任务＃1

Question

我正在尝试制作一个简单的天气应用程序。 每当我尝试访问Yahoo weather api返回JSON对象时，都会收到此异常。 为了在没有api的情况下完成任务，我将JSON对象复制粘贴到了单独的字符串中，并一直将该字符串作为JSON对象使用。

这是我的任务：

公共类WeatherInfoThread扩展了AsyncTask {

    @Override
    protected String doInBackground(Void... params) {

        String resultString = null;
        try {
            url = new URL("https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20weather.forecast%20where%20woeid%20in%20(select%20woeid%20from%20geo.places(1)%20where%20text%3D%22"+location+"%22)&format=json&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys");
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }

        try {
            connection = url.openConnection();
        } catch (IOException e) {
            e.printStackTrace();
        }

        try {
            inputStream = connection.getInputStream();
        } catch (IOException e) {
            e.printStackTrace();
        }

        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));

        try {
            jsonInfo = bufferedReader.readLine();
        } catch (IOException e) {
            e.printStackTrace();
        }

        resultString = jsonInfo;



        try {
            weatherinfo = new JSONObject(testString);
            // Log.d(JSON_INFO,weatherinfo.toString()+"df");
            JSONObject channel = weatherinfo.getJSONObject("query").getJSONObject("results").getJSONObject("channel");
            JSONObject item = channel.getJSONObject("item");
            currentTemp = item.getJSONObject("condition");
            cCurrentInt = currentTemp.getInt("code");

            forecast = item.getJSONArray("forecast");
            cOne = forecast.getJSONObject(1).getString("text");
            cTwo = forecast.getJSONObject(2).getString("text");
            cThree = forecast.getJSONObject(3).getString("text");
            cFour = forecast.getJSONObject(4).getString("text");
            cFive = forecast.getJSONObject(5).getString("text");
            dOne = forecast.getJSONObject(1).getString("day");
            dTwo = forecast.getJSONObject(2).getString("day");
            dThree = forecast.getJSONObject(3).getString("day");
            dFour = forecast.getJSONObject(4).getString("day");
            dFive = forecast.getJSONObject(5).getString("day");


            // Log.d(JSON_INFO,forecast.get(1).toString()+"ddf");




        } catch (JSONException e) {
            e.printStackTrace();
        }
        return null;
    }

这是我得到的错误：

12-16 16：48：06.677 10523-10549 / com.example.aakashmahesh.weatherapp E / AndroidRuntime：致命例外：AsyncTask＃1 java.lang.RuntimeException：在android.os.AsyncTask $ 3执行doInBackground（）时发生错误.done（AsyncTask.java:299）在java.util.concurrent.FutureTask $ Sync.innerSetException（FutureTask.java:273）在java.util.concurrent.FutureTask.setException（FutureTask.java:124）在java.util。并在java.util.concurrent.FutureTask.run（FutureTask.java:137）处并发.FutureTask $ Sync.innerRun（FutureTask.java:307）在android.os.AsyncTask $ SerialExecutor $ 1.run（AsyncTask.java:230）在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1076）at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:569）at java.lang.Thread.run（Thread.java:856）由以下原因引起：java.lang.SecurityException：java.net.InetAddress.getAllByNameImpl（InetAddress.j）上的java.net.InetAddress.lookupHostByName（InetAddress.java:418）上的权限被拒绝（缺少INTERNET权限？） ava：236），位于libcore.net.http.HttpConnection。（HttpConnection.java:70），位于java.net.InetAddress.getAllByName（InetAddress.java:214），位于libcore.net.http.HttpConnection。（HttpConnection.java:50） ），位于libcore.net.http.HttpConnection.connect（HttpConnection。）的libcore.net.http.HttpConnectionPool.get（HttpConnectionPool.java:87）处的libcore.net.http.HttpConnection $ Address.connect（HttpConnection.java:340）处。 libcore.net.http.HttpEngine.openSocketConnection（HttpEngine.java:315）的java：128）libcore.net.http.HttpsURLConnectionImpl $ HttpsEngine的libcore.net.http.HttpsURLConnectionImpl $ HttpsEngine.makeSslConnection（HttpsURLConnectionImpl.java:461） libcore.net.http.Http.HttpEngine.sendSocketRequest（HttpEngine.java:289）（位于libcore.net.http.HttpEngine.sendRequest（HttpEngine.java:239））处的.connect（HttpsURLConnectionImpl.java:433）。 libcore.net上的HttpURLConnectionImpl.getResponse（HttpURLConnectionImpl.java:273）。libcore.ne上的http.HttpURLConnectionImpl.getInputStream（HttpURLConnectionImpl.java:168） t.http.HttpsURLConnectionImpl.getInputStream（HttpsURLConnectionImpl.java:271）位于com.example.aakashmahesh.weatherapp.MainActivity $ WeatherInfoThread.doInBackground（MainActivity.java:269）位于com.example.aakashmahesh.weatherapp.MainActivity $ WeatherInfoThread.doInBackground（ MainActivity.java:250），位于android.os.AsyncTask $ 2.call（AsyncTask.java:287），位于java.util.concurrent.FutureTask $ Sync.innerRun（FutureTask.java:305），位于java.util.concurrent.FutureTask。在java.util.concurrent上运行android.os.AsyncTask $ SerialExecutor $ 1.run（AsyncTask.java:230）的run（FutureTask.java:137）在java.util.concurrent的java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1076）的run（FutureTask.java:137）。 java.lang.Thread.run（Thread.java:856）上的ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:569）：原因：libcore.io.GaiException：getaddrinfo失败：libcore处的EAI_NODATA（与主机名没有关联的地址）。 io.Posix.getaddrinfo（本机方法），位于libcore.io.ForwardingOs.getaddrinfo（ForwardingOs.java:55），位于java.net.InetAddress.lookupHostB 位于libcore.net.http.HttpConnection。（HttpConnection。）处的java.net.InetAddress.getAllByNameImpl（InetAddress.java:236）处的yName（InetAddress.java:405）在java.net.InetAddress.getAllByName（InetAddress.java:214）处的yName（InetAddress.java:236） libcore.net.http.HttpConnection。（HttpConnection.java:50）处的java：70）libcore.net.http.HttpConnectionPool.get（libcore.net.http.HttpConnection $ Address.connect（HttpConnection.java:340）处的在libcore.net.http.HttpConnection.connect（HttpConnection.java:128）处的HttpConnectionPool.java:87）在libcore.net.http.Http.HttpsURLConnectionImpl $ HttpsEngine处的libcore.net.http.HttpEngine.openSocketConnection（HttpEngine.java:315）处libcore.net的.makeSslConnection（HttpsURLConnectionImpl.java:461）.libcore.net的http.HttpsURLConnectionImpl $ HttpsEngine.connect（HttpsURLConnectionImpl.java:433）。libcore.net的http.HttpEngine.sendSocketRequest（HttpEngine.java:289）。 libc.net上的http.HttpEngine.sendRequest（HttpEngine.java:239）.libc上的http.HttpURLConnectionImpl.getResponse（HttpURLConnectionImpl.java:273） libcore.net.http.HttpsURLConnectionImpl.getInputStream（HttpsURLConnectionImpl.java:271）上的ore.net.http.HttpURLConnectionImpl.getInputStream（HttpURLConnectionImpl.java:168）在com.example.aakashmahesh.weatherapp.MainActivity $ WeatherInfoThread.doInBackground（MainActivity。 java：269）位于com.example.aakashmahesh.weatherapp.MainActivity $ WeatherInfoThread.doInBackground（MainActivity.java:250）位于android.os.AsyncTask $ 2.call（AsyncTask.java:287）at java.util.concurrent.FutureTask $ Sync.innerRun（FutureTask.java:305），位于java.util.concurrent.FutureTask.run（FutureTask.java:137），位于android.os.AsyncTask $ SerialExecutor $ 1.run（AsyncTask.java:230），位于java.util。并发于java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:569）处的java.lang.Thread.run（Thread.java:856）处的并发ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1076） .io.ErrnoException：getaddrinfo失败：libcore.io上的EACCES（权限被拒绝）在libcore.io上的Posix.getaddrinfo（本机方法）。 java.net.InetAddress.lookupHostByName（InetAddress.java:405）的ForwardingOs.getaddrinfo（ForwardingOs.java:55）java.net.InetAddress.getAllByName（InetAddress）的java.net.InetAddress.getAllByNameImpl（InetAddress.java:236）的ForwardingOs.getaddrinfo（ForwardingOs.java:55） .java：214）位于libcore.net.http.HttpConnection。（HttpConnection.java:70）位于libcore.net.http.HttpConnection。（HttpConnection.java:50）liblib.net.http.HttpConnection $ Address.connect（ libcore.net.http.HttpConnectionPool.get（HttpConnectionPool.java:87）处的HttpConnection.java:340）libcore.net.http.HttpEngine.openSocketConnection处的libcore.net.http.HttpConnection.connect（HttpConnection.java:128）处的（httpEngine.java:315）在libcore.net.http.HttpsURLConnectionImpl $ HttpsEngine.makeSslConnection（HttpsURLConnectionImpl.java:461）在libcore.net.http.HttpsURLConnectionImpl $ HttpsEngine.connect（HttpsURLConnectionImpl.java:433）在libcore.net。 libcore.net上的http.HttpEngine.sendSocketRequest（HttpEngine.java:289）.libcore上的http.HttpEngine.sendRequest（HttpEngine.java:239） .net.http.HttpURLConnectionImpl.getResponse（HttpURLConnectionImpl.java:273）位于libcore.net.http.HttpURLConnectionImpl.getInputStream（HttpURLConnectionImpl.java:168）位于libcore.net.http.HttpsURLConnectionImpl.getInputStream（HttpsURLConnectionImpl.java:271） com.example.aakashmahesh.weatherapp.MainActivity $ WeatherInfoThread.doInBackground（MainActivity.java:269）位于com.example.aakashmahesh.weatherapp.MainActivity $ WeatherInfoThread.doInBackground（MainActivity.java:250）在android.os.AsyncTask $ 2.call （AsyncTask.java:287）在java.util.concurrent.FutureTask $ Sync.innerRun（FutureTask.java:305）在java.util.concurrent.FutureTask.run（FutureTask.java:137）在android.os.AsyncTask $ Java的SerialExecutor $ 1.run（AsyncTask.java:230）在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1076）在java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:569）在java。 lang.Thread.run（Thread.java:856）12-16 16：48：06.677 1370-17136 / system_process W / ActivityManager： 强制完成活动com.example.aakashmahesh.weatherapp / .MainActivity 12-16 16：48：06.737 1370-17136 / system_process D / dalvikvm：GC_FOR_ALLOC释放647K，释放12％释放16559K / 18695K，暂停10ms，总计10ms 12-16 16 ：48：06.767 10523-10523 / com.example.aakashmahesh.weatherapp D / libEGL：已加载/system/lib/egl/libEGL_emulation.so 12-16 16：48：06.767 10523-10523 / com.example.aakashmahesh.weatherapp D / libEGL：已加载/system/lib/egl/libGLESv1_CM_emulation.so 12-16 16：48：06.767 10523-10523 / com.example.aakashmahesh.weatherapp D / libEGL：已加载/system/lib/egl/libGLESv2_emulation.so

                                                                         [ 12-16 16:48:06.767 10523:10523 D/         ]
                                                                         HostConnection::get() New Host Connection established 0xb8071030, tid 10523

Answer 1

阅读错误，对吗？

由以下原因引起：java.lang.SecurityException：权限被拒绝（缺少INTERNET权限？）

Answer 2

可能是您未在清单文件中写入访问Internet的权限

由以下原因引起：java.lang.SecurityException：权限被拒绝（缺少INTERNET权限？）