根据宽度文本面积计算文本大小 [英] Calculate text size according to width of text area

问题描述

我有应设置的TextView与指定宽度的文本。它需要计算文字的大小，以适应它到TextView的。

I have a text that should be set to TextView with specified width. It needs to calculate the text size to fit it into TextView.

在换句话说：有没有办法使文本符合T​​extView的区域，像ImageView的规模型功能

In other words: Is there a way to fit text into TextView area, like the ImageView scale type feature?

推荐答案

如果它是空间的大小的文本需要你的后那么下面可能会有所帮助：

If it is the Size of the space the Text takes your after then the following might help:

Paint paint = new Paint();
Rect bounds = new Rect();

int text_height = 0;
int text_width = 0;

paint.setTypeface(Typeface.DEFAULT);// your preference here
paint.setTextSize(25);// have this the same as your text size

String text = "Some random text";

paint.getTextBounds(text, 0, text.length(), bounds);

text_height =  bounds.height();
text_width =  bounds.width();

编辑（评论后）： 使用上述相反的：

Edit (after comment): Use the above in reverse:

int text_height = 50;
int text_width = 200;

int text_check_w = 0;
int text_check_h = 0;

int incr_text_size = 1;
boolean found_desired_size = true;

while (found_desired_size){
    paint.setTextSize(incr_text_size);// have this the same as your text size

    String text = "Some random text";

    paint.getTextBounds(text, 0, text.length(), bounds);

    text_check_h =  bounds.height();
    text_check_w =  bounds.width();
    incr_text_size++;

if (text_height == text_check_h && text_width == text_check_w){
found_desired_size = false;
}
}
return incr_text_size; // this will be desired text size from bounds you already have

//此方法可以进行调整了一下，但给你的，是你可以做的想法

//this method may be tweaked a bit, but gives you an idea on what you can do

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