Android EditText does not display hint text hint

The reason why EditText does not display the prompt text hint may be that the font color of the hint is the same as the background color of the EditText. You need to set the color value android:textColorHint="@color/gray" .

<EditText
            android:id="@+id/ed_name"
            android:layout_width="match_parent"
            android:layout_height="80dp"
            android:background="@drawable/tv_bk"
            android:gravity="center"
            android:lineSpacingExtra="3dp"
            android:textColor="@color/black"
            android:textSize="25sp"
            android:hint="请输入姓名"
            android:textColorHint="@color/gray"
            android:inputType="number|numberDecimal"
        />