安卓----文字下方加横线

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。

本文地址：https://blog.csdn.net/Jermmy1207/article/details/107482811