capacitor plugin example

Example: Capacitor android plugin example

package com.devdactic.contacts;
 
import android.Manifest;
import android.content.ContentResolver;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.provider.ContactsContract;
import android.util.Log;
 
import com.getcapacitor.JSObject;
import com.getcapacitor.NativePlugin;
import com.getcapacitor.Plugin;
import com.getcapacitor.PluginCall;
import com.getcapacitor.PluginMethod;
 
import org.json.JSONArray;
 
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
 
@NativePlugin(
        requestCodes={ContactsPlugin.REQUEST_CONTACTS}
)
public class ContactsPlugin extends Plugin {
    protected static final int REQUEST_CONTACTS = 12345; // Unique request code
 
    @PluginMethod()
    public void getContacts(PluginCall call) {
        String value = call.getString("filter");
        // Filter based on the value if want
 
        saveCall(call);
        pluginRequestPermission(Manifest.permission.READ_CONTACTS, REQUEST_CONTACTS);
    }
 
    @Override
    protected void handleRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        super.handleRequestPermissionsResult(requestCode, permissions, grantResults);
 
 
        PluginCall savedCall = getSavedCall();
        if (savedCall == null) {
            Log.d("Test", "No stored plugin call for permissions request result");
            return;
        }
 
        for(int result : grantResults) {
            if (result == PackageManager.PERMISSION_DENIED) {
                Log.d("Test", "User denied permission");
                return;
            }
        }
 
        if (requestCode == REQUEST_CONTACTS) {
            // We got the permission!
            loadContacts(savedCall);
        }
    }
 
    void loadContacts(PluginCall call) {
        ArrayList<Map> contactList = new ArrayList<>();
        ContentResolver cr = this.getContext().getContentResolver();
 
        Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI,
                null, null, null, null);
        if ((cur != null ? cur.getCount() : 0) > 0) {
            while (cur != null && cur.moveToNext()) {
                Map<String,String> map =  new HashMap<String, String>();
 
                String id = cur.getString(
                        cur.getColumnIndex(ContactsContract.Contacts._ID));
                String name = cur.getString(cur.getColumnIndex(
                        ContactsContract.Contacts.DISPLAY_NAME));
 
                map.put("firstName", name);
                map.put("lastName", "");
 
                String contactNumber = "";
 
                if (cur.getInt(cur.getColumnIndex( ContactsContract.Contacts.HAS_PHONE_NUMBER)) > 0) {
                    Cursor pCur = cr.query(
                            ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                            null,
                            ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?",
                            new String[]{id}, null);
                    pCur.moveToFirst();
                    contactNumber = pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                    Log.i("phoneNUmber", "The phone number is "+ contactNumber);
                }
                map.put("telephone", contactNumber);
                contactList.add(map);
            }
        }
        if (cur != null) {
            cur.close();
        }
 
        JSONArray jsonArray = new JSONArray(contactList);
        JSObject ret = new JSObject();
        ret.put("results", jsonArray);
        call.success(ret);
    }
}