本文实例为大家分享了Android实现文字下方加横线的具体代码，供大家参考，具体内容如下

public class WhiteTextviewWithWhiteBottomLine extends LinearLayout { private Context mContext; public WhiteTextviewWithWhiteBottomLine(Context context) { this(context, null); } public WhiteTextviewWithWhiteBottomLine(Context context, @Nullable AttributeSet attrs) { this(context, attrs, 0); } public WhiteTextviewWithWhiteBottomLine(Context context, @Nullable AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); mContext = context; initViews(); } private TextView textView; private View viewLine; private void initViews() { View view = View.inflate(mContext, R.layout.view_textview_with_bottom_line, null); textView = view.findViewById(R.id.tv_view_textview_with_line); viewLine = view.findViewById(R.id.view_view_textview_with_line); this.addView(view); setSelected(false); } public void setTextViewText(String s) { textView.setText(s); } public void setLineColor(@ColorInt int color) { viewLine.setBackgroundColor(color); } public void setSelected(boolean isSelected) { if (isSelected) { viewLine.setVisibility(VISIBLE); } else { viewLine.setVisibility(GONE); } } public boolean isSelected() { if (viewLine.getVisibility() == View.VISIBLE) { return true; }else { return false; } }}

布局文件：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:orientation="vertical"> <TextView android:id="@+id/tv_view_textview_with_line" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:padding="10dp" android:text="测试" android:textColor="@color/white" android:textSize="12sp" /> <View android:id="@+id/view_view_textview_with_line" android:layout_width="30dp" android:layout_height="1dp" android:layout_gravity="center_horizontal" android:background="@color/white" /> </LinearLayout> </LinearLayout>

如果想改变文字、线的颜色这些，直接修改布局文件中的内容。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。