android EditText输入框输入金额保留两位小数点

喜欢ヅ旅行 2021-09-17 10:36 521阅读 0赞

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NzZG5fbG92ZVFpbmdRaW5n_size_16_color_FFFFFF_t_70][]

使用环境：

输入框输入金额，需要处理首字符不能是小数点， 输入金额只保存小数点往后两位数字

使用方法：

binding.money.setInputType(InputType.TYPE_NUMBER_FLAG_DECIMAL | InputType.TYPE_CLASS_NUMBER);
            binding.money.setFilters(new InputFilter[]{new InputFilter() {
                @Override
                public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
                    if (source.equals(".") && dest.toString().length() == 0) {
                        return "0.";
                    }
                    if (dest.toString().contains(".")) {
                        int index = dest.toString().indexOf(".");
                        int length = dest.toString().substring(index).length();
                        if (length == 3) {
                            return "";
                        }
                    }
                    return null;
                }
            }});
    
            binding.money.addTextChangedListener(new TextWatcher() {
                @Override
                public void beforeTextChanged(CharSequence s, int start, int count, int after) {
    
                }
    
                @Override
                public void onTextChanged(CharSequence s, int start, int before, int count) {
                    if (TextUtils.isEmpty(s)) {
                        return;
                    }
                    if (s.length() == 1 && s.toString().equals(".")) {
                        binding.money.setText("");
                        return;
                    }
                    int counter = counter(s.toString(), '.');
                    if (counter > 1) {
                        int index = s.toString().indexOf('.');
                        binding.money.setText(s.subSequence(0, index + 1));
                    }
                }
    
                @Override
                public void afterTextChanged(Editable s) {
    
                }
            });

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NzZG5fbG92ZVFpbmdRaW5n_size_16_color_FFFFFF_t_70]: /images/20210901/e93f56e1989a4f579d458656017f124f.png