I have Json, I want to make it so that a button is created on the ID, and when I clicked on it, the browser opens and goes to the link that is listed in json, I’m just a beginner, google all, and nothing is clear. I'm doing for android in Android studio. Here is an example of JSON:
{"id":1,"link":"http:vk.com","name":"VK"} 
This is a regular Json object. Take it and parse it.
String json = "{\"id\":1,\"link\":\"http://www.vk.com\",\"name\":\"VK\"}"; JSONObject obj = new JSONObject(json); String url = obj.getString("link"); String name = obj.getString("name"); You now have a link and text for the button. Find the button. We put the program text and write the listener.
Button go = (Button) findViewById(R.id.button); go.setText(name); go.setOnClickListener(new OnClickListener() { @Override public void onClick(View v){ Intent i = new Intent(Intent.ACTION_VIEW); i.setData(Uri.parse(url)); startActivity(i); } }); Read this article. There everything about JSON painted.
UPD
About the list - everything is simple. So let's go. First, JSON the JSON array.
String json = "[{\"id\":1,\"link\":\"http://www.vk.com\",\"name\":\"VK\"}, {\"id\":1,\"link\":\"http://www.google.com\",\"name\":\"Google\"},{\"id\":1,\"link\":\"http://www.yandex.ru\",\"name\":\"Yandex\"}"; JSONArray array = new JSONArray(json); int size = array.length(); String[] links = new String[size]; String[] names = new String[size]; for(int n = 0; n < size; n++) { JSONObject obj = array.getJSONObject(n); links[n] = obj.getString("link"); names[n] = obj.getString("name"); } Everything, we have arrays with links and site names. Next we need to create a ListView in the markup.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical"> <ListView android:id="@+id/list" android:layout_height="wrap_content" android:layout_width="wrap_content"/> </LinearLayout> Now create an adapter and fill the list with data.
ListView list = (ListView) findViewById(R.id.list); list.setLayoutManager(new LinearLayoutManager(this)); ArrayAdapter<String> adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, names); listView.setAdapter(adapter); And the listener for the list.
list.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView<?> parent, View view, int position, long id) { Intent i = new Intent(Intent.ACTION_VIEW); i.setData(Uri.parse(links[position-1])); startActivity(i); } }); We use the position of the clicked item (list item) as an index for an array of links.
FULL CODE
MainActivity.java
import android.app.*; import android.os.*; import org.json.*; import android.widget.*; import android.widget.AdapterView.*; import android.content.*; import android.net.*; import android.view.*; import android.util.*; public class MainActivity extends Activity { String[] links, names; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); ListView list = (ListView) findViewById(R.id.list); String json = "[{\"id\":1,\"link\":\"http://www.vk.com\",\"name\":\"VK\"}, {\"id\":1,\"link\":\"http://www.google.com\",\"name\":\"Google\"},{\"id\":1,\"link\":\"http://www.yandex.ru\",\"name\":\"Yandex\"}]"; try{ JSONArray array = new JSONArray(json); int size = array.length(); links = new String[size]; names = new String[size]; for(int n = 0; n < size; n++) { JSONObject obj = array.getJSONObject(n); links[n] = obj.getString("link"); names[n] = obj.getString("name"); } } catch (JSONException e){ Log.d("$", e.toString()); } ArrayAdapter<String> adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, names); list.setAdapter(adapter); list.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView<?> parent, View view, int position, long id) { Intent i = new Intent(Intent.ACTION_VIEW); i.setData(Uri.parse(links[position])); startActivity(i); } }); } } main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="top"> <ListView android:id="@+id/list" android:layout_height="match_parent" android:layout_width="match_parent"/> </LinearLayout> As I understand it, you don’t know the basic things in development, so I’ll give you some good learning sites.
To learn, you only need to read blogs and practice a lot. Google It is most important. Everything you need is already there. We can only understand all this.
Oh yes, screenshot:
Happy coding!
ListView and list it. Do you need buttons? With the list it will look karyavo, I advise without them. Add an answer? - Flippy String json = "{\"id\":1,\"link\":\"http:vk.com\",\"name\":\"VK\"}"; LinearLayout layout = (LinearLayout)findViewById(R.id.layout); //layout в который поместить кнопку try { JSONObject rootJSON = new JSONObject(new JSONTokener(json)); String name = rootJSON.getString("name"); String link = rootJSON.getString("link"); Button button = new Button(this); button.setText(name); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(link))); } }); LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT) layout.addView(button, params); } catch (JSONException e) { e.printStackTrace(); } 
Source: https://ru.stackoverflow.com/questions/603314/
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