自定义控件--虚线
16lz
2021-01-23
推荐安卓开发神器(里面有各种UI特效和android代码库实例)
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" />
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