java - 如何从 TextView 中获取文本并将其格式化为美元货币？

Question

这就是我正在做的 -->

//get entered texts from the edittexts,and convert to integers.
Integer value1 = Integer.parseInt(sand1.getText().toString());


//doing a calculation
Double calculatedValue1 = (9.5*value1);


//set the value to the textview, to display on screen.
result1.setText("$"+ calculatedValue1.toString());

TextView 中的结果 1 现在看起来像这样:##.#

我需要它看起来像 $##.##

Answer 1

将您的代码更改为如下内容:

/get entered texts from the edittexts,and convert to integers.
Integer value1 = Integer.parseInt(sand1.getText().toString());


//doing a calculation
Double calculatedValue1 = (9.5*value1);


//set the value to the textview, to display on screen.
result1.setText("$"+ String.format( "%.2f", calculatedValue1 ));