Multiple Views werden nicht richtig angezeigt - Android Studio

Hi, Ich arbeite momentan an einer Dokumentation für meine Bibliothek und nun bin ich dabei programmatisch neue Views in ein LinearLayout einzutragen. Leider klappt das nicht ganz, da meine zweite View nicht richtig angezeigt wird. Nun stelle ich mir die Frage, warum?
Hier mein Code:
MainActivity:

private void initializeClassLayout() {
    int classes = 12;
    final LinearLayout classLayout[] = new LinearLayout[classes];
    LinearLayout.LayoutParams viewParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
    LinearLayout.LayoutParams textParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
    String[] allClasses = getResources().getStringArray(R.array.array_all_classes);
    String[] classesContentCode = getResources().getStringArray(R.array.array_all_classes_code);
    for (int i = 0; i < classes; i++){
        classLayout[i] = new LinearLayout(this);

        //Set Title
        String currTitle = allClasses[i];
        TextView title = new TextView(this);
        title.setLayoutParams(textParams);
        title.setGravity(Gravity.CENTER_HORIZONTAL);
        title.setTextSize(20f);
        title.setText(currTitle);

        //Set Code
        String currCode = classesContentCode[i];
        TextView code = new TextView(this);
        //String beautifulCode = setCodeSyntax(currCode);
        code.setLayoutParams(textParams);
        code.setTextColor(Color.BLACK);
        code.setTextSize(13f);
        code.setText(currCode);

        //Set View Specs
        classLayout[i].setLayoutParams(viewParams);
        if(android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.JELLY_BEAN) {
            classLayout[i].setBackgroundDrawable(ContextCompat.getDrawable(this, R.drawable.classes_background) );
        } else {
            classLayout[i].setBackground(ContextCompat.getDrawable(this, R.drawable.classes_background));
        }

        classLayout[i].addView(title);
        classLayout[i].addView(code);

        if (i == 0){
            viewParams.setMargins(30, 50, 30, 30);
        } else {
            viewParams.setMargins(30, 30, 30, 30);
        }
        classesView.addView(classLayout[i]);
    }
}

Strings:

<string-array name="array_all_classes">
    <item>Buttons</item>
    <item>Textstyles</item>
    <item>Colors</item>
    <item>Backgrounds</item>
    <item>Borders</item>
    <item>Radius</item>
    <item>Sizes</item>
    <item>Transitions</item>
    <item>Filters</item>
    <item>Links</item>
    <item>Navigations</item>
    <item>Loaders</item>
</string-array>

<string-array name="array_all_classes_code">
    <item><![CDATA[<button class="button btn-normal-filled-dark">Dark Button Filled</button]]></item>
    <item><![CDATA[<button class="button button-dark btn-anim-ltr-dark">Dark Button Left to right</button>]]></item>
    <item><![CDATA[<button class="button button-dark btn-anim-rtl-dark">Dark Button Right to left</button>]]></item>
    <item><![CDATA[<button class="button button-dark btn-anim-ltr-dark">Dark Button Left to right</button>]]></item>
    <item><![CDATA[<button class="button button-dark btn-anim-ltr-dark">Dark Button Left to right</button>]]></item>
    <item><![CDATA[<button class="button button-dark btn-anim-ltr-dark">Dark Button Left to right</button>]]></item>
    <item><![CDATA[<button class="button button-dark btn-anim-ltr-dark">Dark Button Left to right</button>]]></item>
    <item><![CDATA[<button class="button button-dark btn-anim-ltr-dark">Dark Button Left to right</button>]]></item>
    <item><![CDATA[<button class="button button-dark btn-anim-ltr-dark">Dark Button Left to right</button>]]></item>
    <item><![CDATA[<button class="button button-dark btn-anim-ltr-dark">Dark Button Left to right</button>]]></item>
    <item><![CDATA[<button class="button button-dark btn-anim-ltr-dark">Dark Button Left to right</button>]]></item>
    <item><![CDATA[<button class="button button-dark btn-anim-ltr-dark">Dark Button Left to right</button>]]></item>
</string-array>

LinearLayout:

<LinearLayout
            android:id="@+id/layout_classes"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"></LinearLayout>

Das ganze sieht dann später so aus (die zweite View klappt nicht ganz):

Ich bedanke mich für jede Hilfe!

Hi, danke für die hilfe
Ich habe das Problem gelöst, indem ich setOrientation benutzt hab.