Jary jarylan
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| ** | |
| * <pre> | |
| * author : jarylan | |
| * e-mail : [email protected] | |
| * time : 2017/04/24 | |
| * desc : 调节 ViewPager 滑动速度； | |
| * version: 1.0 | |
| * </pre> | |
| * | |
| * 使用示例 ： |
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| mPath = new Path(); | |
| mPath.moveTo(POINT0[0], POINT0[1]); | |
| mPath.lineTo(POINT1[0], POINT1[1]); | |
| mPath.cubicTo(POINT1[0], POINT1[1], POINT2[0], POINT2[1],POINT3[0], POINT3[1]);//贝塞尔曲线 | |
| mPath.lineTo(POINT4[0], POINT4[1]); | |
| mPath.cubicTo(POINT4[0], POINT4[1], POINT5[0], POINT5[1],POINT6[0], POINT6[1]); | |
| mPathMeasure = new PathMeasure(mPath, true);//true 执行一次 | |
| mCurrentPosition = setPoint((float)POINT0[0],(float)POINT0[1]); |
jarylan
/ Android TextView文字分段处理技巧
Last active
October 2, 2018 13:14
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| *** | |
| ###一 . 利用SpannableStringBuilder或 SpannableStrin 类来实现; | |
| SpannableStringBuilder ss=new SpannableStringBuilder("啦啦啦,我是卖报的小当家!"); | |
| // 替换 某个字段的字体样式 | |
| //设置字体(default,default-bold,monospace,serif,sans-serif) | |
| 1.使用默认 | |
| msp.setSpan(new TypefaceSpan("serif")), 2,4, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); | |
| 2.使用资源文件下 | |
| msp.setSpan(new CustomTypefaceSpan("",Typeface.createFromAsset(this.getAssets(),"font/FZY3JW.TTF")), 2,4, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); |
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| 以下为部分XML标志符的数字和字符串转义符: | |
| “ 双引号 (" 或 ") | |
| ’ 单引号 (' 或 ') | |
| & and符号 (& 或 &) | |
| < 小于号 (< 或 <) | |
| > 大于号 (> 或 >) | |
| @ at符号 (@) | |
| © 版权 (©或 ©) | |
| ® 注册商标 (®或 ®) |
jarylan
/ RelativeLayout
Created
August 22, 2016 05:49
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| android:clipChildren的意思：是否限制子View在其范围内 | |
| android:clipToPadding就是说控件的绘制区域是否在padding里面的 |
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| Question: | |
| 在Android软件设计与实现中我们通常都会使用到ListView这个控件,系统有一些预置的Adapter可以使用,例如SimpleAdapter和ArrayAdapter,但是总是会有 | |
| 一些情况我们需要通过自定义ListView来实现一些效果,那么在这个时候,我们通常会碰到自定义ListView无法选中整个ListViewItem的情况,也就是无法响应 | |
| ListView的onItemClickListener中的onItemClick()方法 | |
| Solution: | |
| 可以通过对Item Layout的根控件设置其android:descendantFocusability=”blocksDescendants” , 这样Item Layout就屏蔽了所有子控件获取Focus的权限 | |
| 注意：这个属性不能设置给ListView，设置了也不起作用 ; |
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| *** | |
| 保留小数后几位 | |
| int point = 1;// 保留位数 | |
| float d2 = new BigDecimal(22.395).setScale(point, BigDecimal.ROUND_HALF_UP).floatValue(); | |
| BigDecimal.ROUND_CEILING 向上取 直接丢去入一位 | |
| BigDecimal.ROUND_FLOOR 向下取 直接丢去 | |
| BigDecimal.ROUND_HALF_UP 四舍五入 | |
| java.math.Math类常用的常量和方法： |