how to get text from textview using espresso

Question

I want get text string shown in a textview in LinearLayout. can espresso do that?　If not, is there other way to do that or can I use android api in espresso test case? I am

Answer 1

If you want to check text value with another text, you can create Matcher. You can see my code to create your own method:

 public static Matcher checkConversion(final float value){
    return new TypeSafeMatcher() {

        @Override
        protected boolean matchesSafely(View item) {
            if(!(item instanceof TextView)) return false;

            float convertedValue = Float.valueOf(((TextView) item).getText().toString());
            float delta = Math.abs(convertedValue - value);

            return delta < 0.005f;
        }

        @Override
        public void describeTo(Description description) {
            description.appendText("Value expected is wrong");
        }
    };
}