Context.CLIPBOARD_SERVICE never work!

Unity Engine
,
1

Hi there
I 'd like to get “test” text from clipbord.

I created Java code. and compiled and get UnityAndroidPlugin.jar file.
and I put it onto /Plugins/Android folder

UnityAndroidPlugin.java

package com.you;

import com.unity3d.player.UnityPlayerActivity;
import android.content.Context;
import android.text.ClipboardManager;

public class UnityAndroidPlugin extends UnityPlayerActivity {

    private static UnityAndroidPlugin m_instance;
    public static UnityAndroidPlugin instance() {
         if (m_instance == null)
             m_instance = new UnityAndroidPlugin();
         return m_instance;
     }

     private UnityAndroidPlugin () {
     }

    public void getCode() {
        ClipboardManager cm = (ClipboardManager) this.getSystemService(Context.CLIPBOARD_SERVICE);
        cm.setText("hoge"); // I wanna get hoge text from clipbord.
    }
}

I also create C# code below

UnityAndroidPlugin.cs

using UnityEngine;
using System.Collections;
using System.IO;

#if UNITY_ANDROID
public class UnityAndroidPlugin
{

    // Logs the user out and invalidates the token
    public static void getCode ()
    {
        if (Application.platform != RuntimePlatform.Android)
            return;

        var pluginClass = new AndroidJavaClass("com.you.UnityAndroidPlugin") ;
        AndroidJavaObject plugin = pluginClass.CallStatic<AndroidJavaObject>("instance");
        plugin.Call("getCode");
        plugin.Dispose();
        pluginClass.Dispose();
    } 
}
#endif

and i called

UnityAndroidPlugin.getCode();

but my Android suspended… why can’t?
could you help me??

2

I resolved by myself
I didn’t use .jar

3

I have the same problem.
Please advise me on how to implement copy&paste on Android.