how to Change Font Size of UI Text element using UI Slider in unity C#?

Question

using UnityEngine; using UnityEngine.UI;

public class slide : MonoBehaviour {

Text text;
public Slider slider;

void Start(){

    text = GetComponent<Text> ();

}

public void textscale(int value){

    slider.value     = text.fontSize;

}


}

Answer 1

1. Replace your current script with the following one:

    public class slide : MonoBehaviour { public Text text; // Drag & drop the Text component inside the Inspector public void ChangeFontSize(float value) { ChangeFontSize( Mathf.RoundToInt( value ) ) ; } public void ChangeFontSize(int value) { text.fontSize = value; } } 

2. Click on your Slider, add a new entry in the OnValueChanged event.

3. Drag & drop the gameObject holding the script, and select slide > ChangeFontSize (Dynamic float)

Answer 2

1. Add script:

    using UnityEngine; using UnityEngine.UI; public class ScalerScript : MonoBehaviour { public Text text; public void TextScale(Slider slider) { text.fontSize = (int)slider.value; } } 

2. Create empty GameObject. Attach ScalerScript to it and drag and drop your Text object to Text field of the script in the Inspector window:

3. Set Vertical Overflow to Overflow for your Text element:

4. Set up Slider. Drag and drop empty GameObject with ScalerScript attached to OnValueChanged slider function. Drag and drop Slider element as a parameter to TextScale method. Set Slider's MaxValue to 200:

5. Run the scene.