Android: How can I hide the softkeyboard when the input was made ?

Just add the two lines into your code:

[java]

InputMethodManager manager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
manager.hideSoftInputFromWindow(editText.getWindowToken(), 0);

[/java]

 

Android: get specific JSON attribute

When accessing http://headers.jsontest.com/ the following content is provided:

{
"X-Cloud-Trace-Context": "778d633b22354c11045ece44c646dd2a/11146751159933655926",
"Accept-Language": "de-DE,de;q=0.9,en-US;q=0.8,en;q=0.7,sv;q=0.6,la;q=0.5",
"Host": "headers.jsontest.com",
"DNT": "1",
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36",
"Postman-Token": "5851966f-f18b-cb0f-ab9c-e39ca6878d76",
"Accept": "*/*",
"Cache-Control": "no-cache"
}

The Goal is to extract the values for  Host and User-Agent.

first of all make sure that AndroidManifest.xml contains:

uses-permission android:name="android.permission.INTERNET";

Content of MainActivity.java:

package de.clarisweb.android.json_get_specific_attributes;

public class MainActivity extends AppCompatActivity {
public class DownloadTask extends AsyncTask< String, Void, String> {

@Override
protected String doInBackground(String... urls) {

String result = "";
URL url;
HttpURLConnection urlConnection= null;

try {
url = new URL(urls[0]);
urlConnection = (HttpURLConnection) url.openConnection();
InputStream in = urlConnection.getInputStream();
InputStreamReader reader = new InputStreamReader(in);
int data = reader.read();

while (data != -1) {
char current = (char) data;
result += current;
data = reader.read();

}

return result;

} catch (Exception e){

e.printStackTrace();
return null;
}
}

@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);

try {
JSONObject jsonObject = new JSONObject(s);
String hostInfo = jsonObject.getString( "Host");
String userAgent = jsonObject.getString( "User-Agent");
Log.i ("Host : ", hostInfo);
Log.i ("User-Agent : ", userAgent);

}

} catch (Exception e) {
e.printStackTrace();
}

}
}

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

DownloadTask task = new DownloadTask();
task.execute("http://headers.jsontest.com/");

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
return super.onOptionsItemSelected(item);
}
};

extract from Logcat shows:

12-22 16:08:18.303 7903-7903/de.clarisweb.android.json_get_specific_attributes I/Content :: headers.jsontest.com
12-22 16:08:18.303 7903-7903/de.clarisweb.android.json_get_specific_attributes I/Content :: Dalvik/2.1.0 (Linux; U; Android 8.0.0; Android SDK built for x86 Build/OSR1.170901.056)

Gradle Goodness: Rename Ant Task Names When Importing Ant Build File

Source: Gradle Goodness: Rename Ant Task Names When Importing Ant Build File

Android: Query JSON-Data , log the response to logcat



[java]

package de.clarisweb.android.jsondemo;


import android.os.AsyncTask;

import android.os.Bundle;

import android.support.design.widget.FloatingActionButton;

import android.support.design.widget.Snackbar;

import android.support.v7.app.AppCompatActivity;

import android.support.v7.widget.Toolbar;

import android.util.Log;

import android.view.View;

import android.view.Menu;

import android.view.MenuItem;


import java.io.InputStream;

import java.io.InputStreamReader;

import java.net.HttpURLConnection;

import java.net.URL;


public class MainActivity extends AppCompatActivity {


    public class DownloadTask extends AsyncTask< String, Void, String> {


        @Override

        protected String doInBackground(String… urls) {


            String result = "";

            URL url;

            HttpURLConnection urlConnection= null;


            try {

                url = new URL(urls[0]);

                urlConnection = (HttpURLConnection) url.openConnection();

                InputStream in = urlConnection.getInputStream();

                InputStreamReader reader = new InputStreamReader(in);

                int data = reader.read();


                while (data != -1) {

                    char current = (char) data;

                    result += current;

                    data = reader.read();


                }


                    return result;


            } catch  (Exception e){


                e.printStackTrace();

                return null;

            }

        }


        @Override

        protected void onPostExecute(String s) {

            super.onPostExecute(s);


          Log.i ("JSON: ", s);


        }

    }


    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);

        setSupportActionBar(toolbar);


        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);

        fab.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View view) {

                Snackbar.make(view, "Replace with your own action",Snackbar.LENGTH_LONG)

                        .setAction("Action", null).show();


                            }

        });


        DownloadTask task = new DownloadTask();

//

        task.execute("http://headers.jsontest.com/");


    }


    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        getMenuInflater().inflate(R.menu.menu_main, menu);

        return true;

    }


    @Override

    public boolean onOptionsItemSelected(MenuItem item) {

         int id = item.getItemId();


        if (id == R.id.action_settings) {

            return true;

        }


        return super.onOptionsItemSelected(item);

    }

}


[/java]