Apps Android Emulator App Not Launcing

[United Nations]

I have created a project in Android Studio: package com.example.apps.newapplication; Java code:

import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.RelativeLayout;
import android.widget.Button;


publicclassMainActivityextendsAppCompatActivity{

@override
protectedvoid onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);

RelativeLayoutDakotasLayout=newRelativeLayout(this);
Button redButton =newButton(this);

DakotasLayout.addView(redButton);
setContentView(DakotasLayout);

Toolbar toolbar =(Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);

FloatingActionButton fab =(FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(newView.OnClickListener(){
@override
publicvoid onClick(View view){
Snackbar.make(view,"Replace with your own action",Snackbar.LENGTH_LONG)
.setAction("Action",null).show();
}
});
}

@override
publicboolean onCreateOptionsMenu(Menu menu){
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
returntrue;
}

@override
publicboolean onOptionsItemSelected(MenuItem item){
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();

//noinspection SimplifiableIfStatement
if(id == R.id.action_settings){
returntrue;
}

returnsuper.onOptionsItemSelected(item);
}
}
Manifest.xml code:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.app.newapplication">

<application>
android:allowBackup="true"
android:icon="@Mipmap/ic_launcher"
android:label="@String/app_name"
android:supportsRtl="true"
android:theme="@Style/AppTheme">
<activity
android:name=".MainActivity"
android:label="@String/app_name"
android:theme="@Style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>

<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>

</manifest>
The problem is my app shuts down every time I launch it in the emulator. I'm not sure what's wrong in my java file. It might be my manifest file that's wrong, but I'm not sure.

 

[Deleted User]

Hi. Please read the following, it might help you, and the information in your post is insufficient to diagnose the problem. Thanks.
http://androidforums.com/threads/please-read-me-before-posting.987318/