CODEWITHSUNDEEP
javaandroid
UmBottesWillen
UmBottesWillen

Reputation: 107

Set further attributes of TextView when setText is called

I am looking for an easy way to set further attributes of a TextView element based on the input set by TextView.setText().

Specifically, my code currently looks like this:

TextView payment;
BigDecimal mBigDecimal;

payment.setText(BigDecimal.toString());
if (mBigDecimal.compareTo(BigDecimal.ZERO) == -1) {
    payment.setBackgroundTintList(new ColorStateListStud().getList(ContextCompat.getColor(super.getContext(), R.color.lightred)));
} else if (mBigDecimal.compareTo(BigDecimal.ZERO) == 1) {
    payment.setBackgroundTintList(new ColorStateListStud().getList(ContextCompat.getColor(super.getContext(), R.color.lightgreen)));
} else {
    payment.setBackgroundTintList(new ColorStateListStud().getList(ContextCompat.getColor(super.getContext(), R.color.transparent)));
}
// ColorStateListStud only holds state_enabled and sets the given color

This is copied multiple times over the entirety of my code. so I'd like to streamline that bit best as possible. I want to set the BackgroundTintList based on the BigDecimal value, which I always have at hand when setting the text of a TextView element.

Upvotes: 0

Views: 53

Answers (2)

guipivoto
guipivoto

Reputation: 18677

I think you have two options.

Create a custom Utils.java class

You can create a custom and static class which updates the text view for you.

public class Utils {

    public static void setText(TextView textView, BigDecimal bigDecimal) {
        if(textView != null && bigDecimal != null) {
            // Get context
            Context context = textView.getContext();

            // Set text
            textView.setText(bigDecimal.toString());

            // Set color
            if (bigDecimal.compareTo(BigDecimal.ZERO) == -1) {
                textView.setBackgroundTintList(new ColorStateListStud().getList(ContextCompat.getColor(context, R.color.lightred)));
            } else if (bigDecimal.compareTo(BigDecimal.ZERO) == 1) {
                textView.setBackgroundTintList(new ColorStateListStud().getList(ContextCompat.getColor(context, R.color.lightgreen)));
            } else {
                textView.setBackgroundTintList(new ColorStateListStud().getList(ContextCompat.getColor(context, R.color.transparent)));
            }
        } else {
            Log.e("ERROR", "Error: TextView and/or BigDecimal is null");
        }
}

Then, you can just call:

Utils.setText(mTextView, mBigDecimal);

Create your own Custom TextView

public class CustomTextView extends TextView {

    public CustomTextView(final Context context) {
        this(context, null);
    }

    public CustomTextView(final Context context,
            @Nullable final AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public CustomTextView(final Context context, @Nullable final AttributeSet attrs,
            final int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    public void setText(BigDecimal bigDecimal) {
        setText(bigDecimal.toString());

        // Set color
        if (bigDecimal.compareTo(BigDecimal.ZERO) == -1) {
            setBackgroundTintList(new ColorStateListStud().getList(ContextCompat.getColor(getContext(), R.color.lightred)));
        } else if (bigDecimal.compareTo(BigDecimal.ZERO) == 1) {
            setBackgroundTintList(new ColorStateListStud().getList(ContextCompat.getColor(getContext(), R.color.lightgreen)));
        } else {
            setBackgroundTintList(new ColorStateListStud().getList(ContextCompat.getColor(getContext(), R.color.transparent)));
        }
    }
}

Then, in the java side:

CustomTextView mTextView = (CustomTextView) findViewById(R.id.text_view);
mTextView.setText(mBigDecimal);

And in your layout.xml:

<com.test.CustomTextView
    android:id="@+id/text_view"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"/>

Upvotes: 1

dguy
dguy

Reputation: 140

Try setText() call at the end 

        if (mBigDecimal.compareTo(BigDecimal.ZERO) == -1) {
            payment.setBackgroundTintList(new ColorStateListStud().getList(ContextCompat.getColor(super.getContext(), R.color.lightred)));
        } else if (mBigDecimal.compareTo(BigDecimal.ZERO) == 1) {
            payment.setBackgroundTintList(new ColorStateListStud().getList(ContextCompat.getColor(super.getContext(), R.color.lightgreen)));
        } else {
            payment.setBackgroundTintList(new ColorStateListStud().getList(ContextCompat.getColor(super.getContext(), R.color.transparent)));
        }
        // Only then, call setText() here
        payment.setText(BigDecimal.toString());

Upvotes: 0

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