卜卜Bruce

--- # 主题列表：juejin, github, smartblue, cyanosis, channing-cyan, fancy, hydrogen, condensed-night-purp

getTextWidths用来测量字符的宽度，但是字体设置为calibri.ttf时，测量ff会有问题如图所示第2个f测量为0；其实第一个f的宽度就是两个f的宽度；上述代码中第一个f为175第二个f的

在Canvas中使用maritx缩放的时候，发现图片中有些线消失了。

计算字体大小会经常用到

From Android 3.0 (API level 11) through Android 7.1 (API level 25),the pixel data is stored on the Dalvik heap along with the associated bi…

Current allocated free memory, is the current allocated space ready for new objects. Caution this is not the total free available memory:

原理：不在ondraw中处理绘图操作，在另外一个bitmap中操作，绘制完成后再通知主线程更新UI把之前的bitmap绘制到View的canvas中。

zero() is slowest, because the JIT can't yet optimize away the cost of getting the array length once for every iteration through the loop. …