笔记本样式的EditText控件(每行均带下划虚线)

package com.zongyi.trip.ui;

import com.zongyi.trip.R;

import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.DashPathEffect;
import android.graphics.Paint;
import android.graphics.PathEffect;
import android.util.AttributeSet;
import android.widget.EditText;

@SuppressLint({ "ResourceAsColor", "DrawAllocation" })
public class LinedEditText extends EditText {
//    private Paint mPaint = new Paint();

public LinedEditText(Context context) {
super(context);
initPaint();
}

public LinedEditText(Context context, AttributeSet attrs) {
super(context, attrs);
initPaint();
}

public LinedEditText(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
initPaint();
}

private void initPaint() {
//        mPaint.setStyle(Paint.Style.STROKE);
////        mPaint.setColor(0x80000000);
//    	mPaint.setStyle(Paint.Style.STROKE);
//    	mPaint.setColor(R.color.dashed_line_color);
//        PathEffect effects = new DashPathEffect(new float[]{5,5,5,5},1);
//        mPaint.setPathEffect(effects);
}

@Override protected void onDraw(Canvas canvas) {
Paint mPaint = new Paint();
//       mPaint.setColor(0x80000000);
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setColor(Color.LTGRAY);
PathEffect effects = new DashPathEffect(new float[]{5,5,5,5},5);
mPaint.setPathEffect(effects);

int left = getLeft();
int right = getRight();
int paddingTop = getPaddingTop();
int paddingBottom = getPaddingBottom();
int paddingLeft = getPaddingLeft();
int paddingRight = getPaddingRight();
int height = getHeight();
int lineHeight = getLineHeight();
int spcingHeight = (int) getLineSpacingExtra();
int count = (height-paddingTop-paddingBottom) / lineHeight;

for (int i = 0; i < count; i++) {
int baseline = lineHeight * (i+1) + paddingTop - spcingHeight/2 ;
canvas.drawLine(left+paddingLeft, baseline, right-paddingRight, baseline, mPaint);
}

super.onDraw(canvas);
}
}

<com.zongyi.trip.ui.LinedEditText
android:id="@+id/edittext_message"
android:layout_width="fill_parent"
android:layout_height="200dp"
android:lineSpacingExtra="15dp"
android:gravity="top"
android:textColor="#ACB6BB"
android:textSize="18sp" />