很简单,就像window桌面图片一样,如果图片小的话就会平铺。
在drawable文件夹中添加自己的my.xml文件,描述如:
<?xml version ="1.0" encoding ="utf-8" ?> <bitmap xmlns:android="http://schemas.android.com/apk/res/android" android:src="@drawable/pic_bg" android:tileMode="repeat" />
然后再需要用的地方使用:
android:background="@drawable/mybg"
代码实现方式:
Java代码Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.icon); BitmapDrawable bd = new BitmapDrawable(bitmap); bd.setTileModeXY(TileMode.REPEAT , TileMode.REPEAT ); bd.setDither(true); view.setBackgroundDrawable(bd);
再着可以用*.9.png实现。
可以在上左两边添加要延伸的像素行。
在Android的UI开发中,有时为了界面美观而需要虚线。
package com.custom; import android.content.Context; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.DashPathEffect; import android.graphics.Paint; import android.graphics.Path; import android.graphics.PathEffect; import android.graphics.Rect; import android.util.AttributeSet; import android.util.DisplayMetrics; import android.util.Log; import android.view.View; /** * 画虚线组件 * @author linweidong * @Date 2010-09-15 */ public class DashedLine extends View { private final String namespace = "http://com.smartmap.driverbook"; private float startX; private float startY; private float endX; private float endY; private Rect mRect; public DashedLine(Context context, AttributeSet attrs) { super(context, attrs); } @Override protected void onDraw(Canvas canvas) { // TODO Auto-generated method stub super.onDraw(canvas); Paint paint = new Paint(); paint.setStyle(Paint.Style.STROKE); paint.setColor(Color.DKGRAY); Path path = new Path(); path.moveTo(0, 10); path.lineTo(480,10); PathEffect effects = new DashPathEffect(new float[]{5,5,5,5},1); paint.setPathEffect(effects); canvas.drawPath(path, paint); }在layout文件夹下的xml引用这个控件
<com.custom.DashedLine android:id="@+id/dashedLine" android:layout_width="wrap_content" android:layout_height="20px" />
http://txlong-onz.iteye.com/blog/1144874#comments