Test the size of a text on a button with getTextSize()

Question

I need to check if the text size on a button have the size 37sp. I found a method to get the size with: .getTextSize(), but the size with I receive is: 126.0, and not 48sp. The code off button:

<Button
    android:id="@+id/buttoneql"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="="
    android:textColor="@android:color/black"
    android:textSize="48sp" />

The test:

buttoneql = (Button) currentActivity.findViewById(R.id.buttoneql);
assertEquals( 48.0f, buttoneql.getTextSize() );

How I should do to recive the ral value of the text size?

`setTextSize(TypedValue.COMPLEX_UNIT_SP, 48);` then use `scaledDensity`.Read https://stackoverflow.com/a/35843172/3395198 — IntelliJ Amiya, Nov 16 '17 at 12:04

score 4 · Answer 1 · edited Nov 16 '17 at 12:13

4

getTextSize() return px float

This is code for the convert PX to SP format.

view.setTextSize(TypedValue.COMPLEX_UNIT_PX, 24);

edited Nov 16 '17 at 12:13

Saurabh Bhandari

2,438
4
26
33

answered Nov 16 '17 at 12:07

amralsaidy

183
1
15

How I compare this with "48sp" by using assertEquals? – Roberto Pinheiro Nov 16 '17 at 12:43

Gurupreet · Answer 2 · 2017-11-17T10:03:48.280

2

     float oldSize=buttoneql.getTextSize();

text size in float

    Log.d("size in float",""+oldSize);
    float dp= getResources().getDisplayMetrics().scaledDensity;

float value of scale density

    float newSize=oldSize/dp;

textsize in sp = new size

    Log.d("newSize in sp-->",""+newSize);

compare float value of text size and new size

    if(48.0==newSize){
        Log.d("equal size-->","true");
    }
    else{
        Log.d("equal size-->","false");
    }

edited Nov 17 '17 at 10:03

answered Nov 16 '17 at 12:15

Gurupreet

39
5

How I compare this with "48sp" by using assertEquals? – Roberto Pinheiro Nov 16 '17 at 12:44
assertEquals() methods checks that the two objects are equals or not, not there values – Gurupreet Nov 17 '17 at 10:05

score 1 · Accepted Answer · answered Nov 16 '17 at 14:04

1

I solved the problem by multiplying the value I need (128.0) by 2.625 and rounding it up correctly to make it an integer.

int size = (int) Math.round (48.0 * 2.625);

And after, comparing to the receive value:

assertEquals(size, (int) buttoneql.getTextSize());

answered Nov 16 '17 at 14:04

Roberto Pinheiro

1,260
13
30

1

Put this question as write answer – Rafaela Lourenço Dec 12 '17 at 10:47

Test the size of a text on a button with getTextSize()

3 Answers3