MainActivity

package com.example.farid.ima;

import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.PopupMenu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity implements PopupMenu.OnMenuItemClickListener {
Button popup;
    TextView hasiltextview, tHello;
    Context context = this;

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        popup = (Button) findViewById(R.id.btnpopup);
        tHello = (TextView) findViewById(R.id.hello);
        popup.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                PopupMenu menuPopup = new PopupMenu(MainActivity.this, view);
                menuPopup.setOnMenuItemClickListener(MainActivity.this);
                menuPopup.inflate(R.menu.menu_main);
                menuPopup.show();
            }
        });
}

@Override
    public boolean onMenuItemClick(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.menuid:
                tHello.setText("ini menu satu");
                break;
            case R.id.menu2:
                tHello.setText("ini menu 2");
                break;
            case R.id.menu3:
                Intent share = new Intent(Intent.ACTION_SEND);
                share.setType("text/plain");
                share.putExtra(Intent.EXTRA_SUBJECT, "ini judul share");
                share.putExtra(Intent.EXTRA_TEXT, "http://www.imastudio.co.id");
                startActivity(Intent.createChooser(share, "share link"));
                break;
        }
        return true;
    }
}