Android中EditText如何去除边框添加下划线

<&＃63;xml version="1.0" encoding="utf-8"&＃63;> 
 
 
 
 
 

public class LineEditText extends EditText { 
// 画笔 用来画下划线 
private Paint paint; 
public LineEditText(Context context, AttributeSet attrs) { 
super(context, attrs); 
paint = new Paint(); 
paint.setStyle(Paint.Style.STROKE); 
paint.setColor(Color.RED); 
// 开启抗锯齿 较耗内存 
paint.setAntiAlias(true); 
} 
@Override 
protected void onDraw(Canvas canvas) { 
super.onDraw(canvas); 
// 得到总行数 
int lineCount = getLineCount(); 
// 得到每行的高度 
int lineHeight = getLineHeight(); 
// 根据行数循环画线 
for (int i = 0; i