Android雙精度十進制格式

Question

如何將double格式化爲2個小數點？ Decimalformat或string.format沒有給出預期輸出：

DecimalFormat precision = new DecimalFormat("0.00"); 
s = mylist.get(0).getHARUALTAESGE(); 
double hramount = Double.parseDouble(s); 
String rb = rebatespin.getSelectedItem().toString(); 

//below one 
double rebamount = (Double.parseDouble(s) * Double.parseDouble(rb.replace("%", ""))); 
rebateamount.setText(precision.format(rebamount)); 
double hualr=(hramount-rebamount); 

//below other one 
haulageprice.setText(String.format("%.2f", hualr)); 

Answer 1

試試這個：

double number = 5.15432; 

DecimalFormat df = new DecimalFormat("###,###,###,##0.00"); 

textviewsz.setText(df.format(number));