Sample Unity3D Plugin for Sending SMS in Android. (JAVA plugin)

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.BrainDump.PluginTester"
    android:versionCode="2"
    android:versionName="1.0">

  <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="15" />

  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
  <uses-permission android:name="android.permission.STORAGE" />
  <uses-permission android:name="android.permission.INTERNET" />
  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
  <uses-permission android:name="android.permission.SEND_SMS" />
  <uses-permission android:name="android.permission.SMS_RECEIVED" />
  <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
  <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
  <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>

  <application android:name="com.BrainDump.PluginTester.Brain" android:icon="@drawable/app_icon" android:label="@string/app_name">
    <activity android:name=".BrainDumpActivity" android:label="@string/app_name" android:configChanges="fontScale|keyboard|keyboardHidden|locale|mnc|mcc|navigation|orientation|screenLayout|screenSize|smallestScreenSize|uiMode|touchscreen">
      <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
      </intent-filter>
    </activity>
  </application>

</manifest>

Brain.java

package com.BrainDump.PluginTester;

import android.app.Application;

public class Brain extends Application {

		
}

BrainDumpActivity.java

package com.BrainDump.PluginTester;

import android.os.Bundle;
import android.telephony.SmsManager;
import android.util.Log;
import android.widget.Toast;
import com.unity3d.player.UnityPlayerActivity;

public class BrainDumpActivity extends UnityPlayerActivity{
	
	@Override
	protected void onCreate(Bundle icicle){
		super.onCreate(icicle);
	}
	
	@Override
	protected void onResume(){
		super.onResume();
	}
	
	@Override
	protected void onStop(){
		super.onStop();
	}
	
	@Override 
	protected void onPause(){
		super.onPause();
	}
	
	 public void showMessage(final String message) {
	        this.runOnUiThread(new Runnable() {
	            public void run() {
	                Toast.makeText(BrainDumpActivity.this, message, Toast.LENGTH_SHORT).show();
	            }
	        });
	 }
	 
    public void sendSMSMessage(final String phoneNumber, final String messageBody){
    	this.runOnUiThread(new Runnable() {
    		public void run(){
    			try
    			{
    				SmsManager smsManager = SmsManager.getDefault();
        			smsManager.sendTextMessage(phoneNumber, null, messageBody, null, null);
        			showMessage("Message Sent! Destination :" + phoneNumber);
    			}
    			catch(Exception exp){
    				showMessage("Error has been Occurred!\n" + exp.getMessage());
    				showMessage("Cannot send SMS to " + phoneNumber);
    				Log.d("Unity", exp.getStackTrace().toString());
    			}
    		}
    	});
    }
    
    public void tip(){
		Log.d("Unity", "Tip Begin Call!");
		showMessage("my text");      
        Log.d("Unity", "Tip End Call!");
    }
    
}

PlugInCaller.cs

using UnityEngine;

namespace Assets.Scripts.BrainDump
{
    public class PlugInCaller : MonoBehaviour
    {
        private AndroidJavaClass _activityClass;
        private AndroidJavaObject _activityObject;
        private string _messageBody = "Sent from Unity with LOVE";
        private string _phoneNumber = "000000000000";

        private void OnGUI()
        {
            var mobileStyle = new GUIStyle {fontSize = 20, normal = {textColor = Color.white}};
            
            if (GUILayout.Button("Simple Toast", GUILayout.Width(500), GUILayout.Height(50)))
            {
                _activityClass = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
                _activityObject = _activityClass.GetStatic<AndroidJavaObject>("currentActivity");


                _activityObject.Call("showMessage", "A direct Message from C# with love!");
            }

            GUILayout.BeginHorizontal();
            GUILayout.Label("Phone Number: ", mobileStyle);
            _phoneNumber = GUILayout.TextField(_phoneNumber, mobileStyle, GUILayout.Height(50));
            GUILayout.EndHorizontal();

            GUILayout.BeginHorizontal();
            GUILayout.Label("Message: ", mobileStyle);
            _messageBody = GUILayout.TextArea(_messageBody, mobileStyle, GUILayout.Height(150));
            GUILayout.EndHorizontal();

            if (GUILayout.Button("Send SMS", GUILayout.Width(500), GUILayout.Height(50)))
            {
                _activityClass = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
                _activityObject = _activityClass.GetStatic<AndroidJavaObject>("currentActivity");


                _activityObject.Call("sendSMSMessage", _phoneNumber, _messageBody);
            }
        }
    }
}

I create another gist based on this code but without creating a java plugin, just in case somebody need it https://gist.github.com/rmdwirizki/87f9e68c7ef6ef809a777eb25f12c3b2

@rmdwirizki: Your code works like a charm and it's much easier for me to use. Thank you.

ببخشید بنده از همین راه رفتم . ولی با ارور رفرنس مواجه میشدم . در خطهایی که مواردی مثل
_activityObject.Call("sendSMSMessage", _phoneNumber, _messageBody);
وجود داشت
به این ها گیر میداد . چیکار میشه کرد اقای تاثیری؟