Android Paint.breakText是否包含最大宽度处的字符？

用于绘制.breakText的

breakText

int breakText (CharSequence text,  
               int start,  
               int end,  
               boolean measureForwards,  
               float maxWidth,  
               float[] measuredWidth)  

测量文本，如果测量的宽度超过 最大宽度。返回已测量的字符数，如果 measuredWidth不为空，请在其中返回实际测量的宽度

返回值

---

int

测量的字符数。将始终是否，

breakText

不包含使其超过

maxWidth

的字符

我们可以通过以下代码看到这一点

String text = "Hello World";
Paint paint = new Paint();
paint.setTextSize(100);

// Measure the substrings individually
int length = text.length();
for (int i = 1; i <= length; i++) {
    float totalWidth = paint.measureText(text, 0, i);
    Log.i("TAG", i + ", totalWidth of " + text.substring(0, i) + ": " + totalWidth);
}

// compare these to breakText
float[] measuredWidth = new float[1];
float maxWidth = 360; // halfway through the "o" of "World"
int countedChars = paint.breakText(text, 0, length, true, maxWidth, measuredWidth);
Log.i("TAG", "countedChars: " + countedChars + " (\"" + text.substring(0, countedChars) + "\")");
Log.i("TAG", "measuredWidth: " + measuredWidth[0]);

// 1, totalWidth of H: 70.0
// 2, totalWidth of He: 123.0
// 3, totalWidth of Hel: 148.0
// 4, totalWidth of Hell: 173.0
// 5, totalWidth of Hello: 230.0
// 6, totalWidth of Hello : 255.0
// 7, totalWidth of Hello W: 344.0
// 8, totalWidth of Hello Wo: 399.0
// 9, totalWidth of Hello Wor: 433.0
//10, totalWidth of Hello Worl: 458.0
//11, totalWidth of Hello World: 515.0

// countedChars: 7 ("Hello W")
// measuredWidth: 342.0

String text=“Hello World”；
油漆=新油漆（）；
油漆.尺寸（100）；
//分别测量子串
int length=text.length（）；
对于（int i=1；i