public void theme(View view){
    getApplication().setTheme(android.R.style.Theme_Holo);
}

public void onCreate(Bundle savedInstanceState) {

    SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
    int theme = sp.getInt("THEME", R.style.AppTheme);
    setTheme(theme);

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_second);
}

<resources>
    <style name="AppThemeLight" parent="@style/Theme.AppCompat.Light">
        <item name="colorPrimary">@color/primary_light</item>
        <item name="colorPrimaryDark">@color/primary_dark_light</item>
        <item name="colorAccent">@color/accent_light</item>
    </style>

    <style name="AppTheme" parent="@style/Theme.AppCompat">
        <item name="colorPrimary">@color/primary</item>
        <item name="colorPrimaryDark">@color/primary_dark</item>
        <item name="colorAccent">@color/accent</item>
    </style>
</resources>

<resources>
    <color name="primary_light">#edeceb</color>
    <color name="accent_light">#517c50</color>
    <color name="primary_dark_light">#0d0c0c</color>
    <color name="primary">#2d2c2a</color>
    <color name="accent">#a5c0df</color>
    <color name="primary_dark">#e2e0e0</color>
</resources>

<resources>
 <style name="AppThemeLight" parent="android:Theme.Holo.Light">
    <item name="android:background">#FFFFFF</item>
    <item name="android:textColor">#000000</item>
    <item name="android:actionBarStyle">@style/LightActionBar</item>
 </style>

 <style name="AppTheme" parent="android:Theme.Holo">
    <item name="android:background">#000000</item>
    <item name="android:textColor">#FFFFFF</item>
    <item name="android:actionBarStyle">@style/BlackActionBar</item>
 </style>

 <style name="LightActionBar" parent="@android:style/Widget.Holo.Light.ActionBar">
    <item name="android:background">#FFFFFF</item>
 </style>

 <style name="BlackActionBar" parent="@android:style/Widget.Holo.ActionBar">
    <item name="android:background">#000000</item>
 </style>
</resources>

style name="AppBaseTheme" parent="Theme.AppCompat"></style>
style name="AppTheme" parent="AppBaseTheme"></style>
style  name="AppTheme.Light" parent = "Theme.AppCompat.Light"></style>

> android:theme="@style/AppBaseTheme"

public void onCreate(Bundle savedInstanceState) {
        if (MainActivity.theme.equals("white")) {
            setTheme(R.style.AppTheme_Light);
        } else setTheme(R.style.AppTheme);
        super.onCreate(savedInstanceState);

MainActivity.theme="white";
Intent intent2 = getIntent();
finish();
startActivity(intent2);