...You can use app:met_baseColor in xml or setBaseColor() in java code. If you haven't set a base color, black will be used. Primary color will be used as the activated bottom line color, highlight floating label color, and singleline ellipsis color. You can use app:met_primaryColor in xml or setPrimaryColor() in java code. If you haven't set a primary color, the base color will be used. Just use com.rengwuxian.materialedittext.MaterialEditText instead of EditText in your layout xml. MaterialEditText has directly inherited EditText, so you don't have to change your java code.