StartActivity.java

package com.whf.messagerelayer.activity;

import android.app.Activity;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import com.whf.messagerelayer.R;

public class StartActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        startActivity(new Intent(this,MainActivity.class));
        finish();
    }
}