Android，两个互相影响的EditText如何避免死循环

最新推荐文章于 2021-05-29 08:19:32 发布

转载最新推荐文章于 2021-05-29 08:19:32 发布 · 920 阅读

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本文介绍了一种使用Android中的TextWatcher实现两个编辑框之间的折扣率与折扣金额相互计算的方法。通过监听输入变化，自动更新另一个编辑框的内容，实现折扣率与折扣金额的实时转换。

 twMt1 = new TextWatcher()
                            {

                                @Override
                                public void afterTextChanged(Editable s)
                                {
                                    edt2.addTextChangedListener(twMt2);
                                }

                                @Override
                                public void beforeTextChanged(CharSequence s, int start, int count, int after)
                                {

                                }

                                @Override
                                public void onTextChanged(CharSequence s, int start, int before, int count)
                                {
                                    edt2.removeTextChangedListener(twMt2);
                                    int deposite = Util.parseInt(s.toString());
                                    Float discount = (selectMt.getSalsePrice()*selectMt.getMtNum())*deposite/100;
                                    edt2.setText(Util.getDoubleTwoFloat(discount));

                                }

                            };

                            twMt2 = new TextWatcher()
                            {

                                @Override
                                public void afterTextChanged(Editable s)
                                {
                                   edt.addTextChangedListener(twMt1);

                                }

                                @Override
                                public void beforeTextChanged(CharSequence s, int start, int count, int after)
                                {
                                }

                                @Override
                                public void onTextChanged(CharSequence s, int start, int before, int count)
                                {
                                    edt.removeTextChangedListener(twMt1);
                                    Float discount = Util.parseFloat(s.toString());
                                    int deposite=0;
                                    if((selectMt.getSalsePrice()*selectMt.getMtNum())!=0f){
                                        deposite = (int) (discount/(selectMt.getSalsePrice()*selectMt.getMtNum())*100);
                                    }
                                    Log.i("info_out",deposite+"折扣率");
                                    edt.setText(deposite+"");

                                }
                            };



                            edt.addTextChangedListener(twMt1);
                            edt2.addTextChangedListener(twMt2);