toastactivity

package com.example.taufiqhidayah.androidlayout;

import android.content.Context;
import android.content.DialogInterface;
import android.os.Build;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class toastactivity extends AppCompatActivity {
    Context context = this;
    Button btntoast, btnalert;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_toastactivity);
        btntoast = (Button) findViewById(R.id.btntoast);
        btntoast.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                AlertDialog.Builder builder = new AlertDialog.Builder(context);
                builder.setTitle("Peringatan !");
                builder.setMessage("Anda Yakin Ingin Keluar ?");
                builder.setPositiveButton("Anda Keluar", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialogInterface, int which) {
                        Toast.makeText(toastactivity.this, "Yes", Toast.LENGTH_SHORT).show();
                        toastactivity.this.finish();
                    }
                });

                builder.setNegativeButton("NO", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialogInterface, int which) {
                        Toast.makeText(getApplication(), "No", Toast.LENGTH_SHORT).show();
                    }
                });
                builder.setNeutralButton("Yes", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialogInterface, int which) {
                        Toast.makeText(getApplication(), "Keluar", Toast.LENGTH_SHORT).show();
                    }
                });
                builder.show();
            }
        });
        btnalert = (Button) findViewById(R.id.btnalert);
        btnalert.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                AlertDialog.Builder builder = new AlertDialog.Builder(context);
                builder.setTitle("Hai");
                builder.setMessage("Juga");
                builder.setPositiveButton("Baik", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialogInterface, int i) {
                        Toast.makeText(getApplication(), "Keluar", Toast.LENGTH_SHORT).show();
                    }
                });
                builder.show();
            }
        });
    }
}