java - 如何仅在使用android中的textwatcher从edittext完成编辑后才将值添加到hashmap

Question

我有多个具有实现textwatcher的edittexts的LinearLayout，因此当我输入任何值时它会直接放入hashmap，但我想在完成编辑后添加完整的值，我的代码如下:

TextWatcher textwatcher = new TextWatcher() {

        @Override
        public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
            // TODO Auto-generated method stub

        }

        @Override
        public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
            // TODO Auto-generated method stub

        }

        @Override
        public void afterTextChanged(Editable arg0) {
            // TODO Auto-generated method stub
            calculateInvoice();
            HashMap<String, String> descMap = new HashMap<String, String>();
            descMap.put("qty", et_qty.getText().toString() + "");
            descMap.put("upriz", et_unit_prize.getText().toString() + "");
            descMap.put("amt", subtotal + "");

            System.out.println("::::::::::::::::::MAP VALUES::::::::::" + descMap);

            descList.add(descMap);

        }
    };

Answer 1

让您拥有 5 个在 xml 文件中定义的 editText View 。假设它们是editText0、editText1...editText4。

现在在您的 Activity 类中，

1

构造一个字符串数组:String[] Data = new String[5]

2

将文本观察器分别添加到每个 EditText。像:

editText0.addTextChangedListener(new TextWatcher() {

            @Override
            public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {}

            @Override
            public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,int arg3) {}

            @Override
            public void afterTextChanged(Editable Token) 
            {
                final int index = 0; // as this Text Watcher is specifically for editText0
                Data[index] = Token.toString();

            }
        });

3

类似地，将 TextWatcher 添加到所有剩余的 4 个 EditTextView。