Convert pixels to sp

by

Use this

public static float pixelsToSp(Context context, float px) {
    float scaledDensity = context.getResources().getDisplayMetrics().scaledDensity;
    return px/scaledDensity;
}

If you wanna test if this method works right use this snippet

XML

<TextView
        android:id="@+id/txtHelloWorld"
        android:text="@string/hello_world"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="20sp"/>

<TextView
        android:id="@+id/txtHelloWorld2"
        android:text="@string/hello_world"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />

Java

View rootView = inflater.inflate(R.layout.fragment_main, container, false);
TextView helloWorldTextView = (TextView)    rootView.findViewById(R.id.txtHelloWorld);
TextView helloWorldTextView2 = (TextView) rootView.findViewById(R.id.txtHelloWorld2);
helloWorldTextView2.setTextSize(pixelsToSp(getActivity(), helloWorldTextView.getTextSize()));

Both TextView’s font size should be same.

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