Ma'lum bir usul yordam bilan TextView ni qanday kengaytirasiz?

Siz TextView'ni kengaytirishingiz mumkin, o'zingizning TextView dan meros olgan sinf yaratib, kerakli metodlarni, masalan, onDraw() yoki onMeasure() ni qayta yozish orqali. Masalan:

public class CustomTextView extends androidx.appcompat.widget.AppCompatTextView {

    public CustomTextView(Context context) {
        super(context);
        init();
    }

    public CustomTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public CustomTextView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    private void init() {
        // Qo'shimcha boshlang'ich mantiq, agar kerak bo'lsa
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        // O'z chizish mantiqingizni qo'shing, masalan, ramka yoki ostki chiziq
        Paint paint = new Paint();
        paint.setColor(Color.RED);
        paint.setStyle(Paint.Style.STROKE);
        paint.setStrokeWidth(2);
        canvas.drawRect(0, 0, getWidth(), getHeight(), paint);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        // O'lchamlarni o'lchash uchun o'z mantiqingizni qo'shing
        int width = getDefaultSize(getSuggestedMinimumWidth(), widthMeasureSpec);
        int height = getDefaultSize(getSuggestedMinimumHeight(), heightMeasureSpec);
        setMeasuredDimension(width, height);
        // Kerak bo'lsa, o'lchamlarni o'zgartirish mumkin
    }
}

Bu misolda, CustomTextView sinfi AppCompatTextView dan meros oladi. onDraw() metodi qizil ramka qo'shish uchun qayta yozilgan, va onMeasure() o'zgartirilmagan, lekin uni sozlash imkoniyatini ko'rsatadi.

XML dizaynda maxsus TextView ishlatish uchun, to'liq sinf nomini ko'rsating:

<com.sizningpaket.CustomTextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Salom, Maxsus TextView!" />

com.sizningpaket ni o'zingizning paket yo'lingiz bilan almashtiring.