自定义View 

 1 package org.mobiletrain.shudu08;
 2 import android.content.Context;
 3 import android.graphics.Canvas;
 4 import android.graphics.Color;
 5 import android.graphics.Paint;
 6 import android.view.View;
 7 
 8 
 9 public class MyView extends View{
10 
11     public MyView(Context context) {
12         super(context);
13         
14     }
15     @Override
16     protected void onDraw(Canvas canvas) {
17         Paint paint = new Paint();
18         //paint.setColor(Color.BLUE);
19         paint.setARGB(150, 0, 0, 200);
20         paint.setStrokeWidth(5);
21         paint.setStyle(Paint.Style.STROKE);
22         canvas.drawLine(0, 200, 600, 200, paint);
23         
24         paint.setTextSize(100);
25         canvas.drawText("apple", 10, 200, paint);
26         paint.setStyle(Paint.Style.FILL);
27         canvas.drawText("apple", 300, 200, paint);
28         super.onDraw(canvas);
29     }
30 }

能看出drawText的y值就是基准线

 

 

posted @ 2014-12-14 16:49  疾风剑  阅读(181)  评论(0)  编辑  收藏  举报