android - NullPointerException with custom font from assets -


i'm trying use custom font in application, got exception when when run app:

caused by: java.lang.nullpointerexception: attempt invoke virtual method 'void android.widget.textview.settypeface(android.graphics.typeface)' on null object reference

i have working font , it's in right path , that's code:

private textview tv; private typeface tf;      tv = (textview) findviewbyid(r.id.wlctext);     tf = typeface.createfromasset(getassets(), "en_font.ttf");     tv.settypeface(tf);

that's xml:

<scrollview xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent">  <linearlayout     android:id="@+id/mainview"     android:background="@color/semi_transparent_black"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:orientation="vertical"     android:padding="@dimen/activity_vertical_margin">      <textview         android:id="@+id/wlctext"         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:textcolor="@android:color/white"         android:text="test"         android:textsize="25sp" />  </linearlayout>

tv null. whatever reason (e.g., failure call setcontentview()), not have widget in activity can found via r.id.wlctext.


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