ListView中Item爲EditText獲取與保存數據

近期有個需求需要在ListView中使用EditView填寫數據,並且保存到服務器上,而在實現的過程中,確實是遇到了一些坑
1,首先數據獲取的問題,由於數據在adapter中,要獲取所有的數據,並且上傳到服務器.
2,數據更新的問題,填寫完數據,添加一條空item的時候,數據總是對不上.
3,每輸入一次數據都需要對輸入的數據進行網絡監察,是否存在數據已上傳的情況.
4,在獲取數據後,要去除重複的數據再上傳服務器.

以下代碼爲Adapter中處理點擊焦點時,數據實時更新.

public class MyListAdapter extends BaseAdapter {

    private final Context mContext;
    private final HashMap<Integer, String> mData;
    private int mTouchItemPosition = -1;
    private OnChangedTextListener onChangedTextListener;
    public MyListAdapter(Context context, HashMap<Integer, String> data) {
        this.mContext = context;
        this.mData = data;
    }

    @Override
    public int getCount() {
        return mData.size();
    }

    @Override
    public Object getItem(int position) {
        return mData.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    public HashMap<Integer, String> getmData() {
        return mData;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder;
        if (convertView == null) {
            viewHolder = new ViewHolder();
            convertView = LayoutInflater.from(mContext).inflate(R.layout.item_list, null);
            viewHolder.editText = (EditText) convertView.findViewById(R.id.item_edit);
            viewHolder.mTextWatcher = new MyTextChangeWatch();
            //設置數據監聽
            viewHolder.editText.addTextChangedListener(viewHolder.mTextWatcher);
            viewHolder.upDataPosition(position);
            convertView.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) convertView.getTag();
            viewHolder.upDataPosition(position);
        }
        viewHolder.editText.setText(mData.get(position));
        viewHolder.editText.setTag(position);
        viewHolder.editText.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
            //使用getTag 記錄position
                mTouchItemPosition = (int) v.getTag();
                return false;
            }
        });
        /**
         * 解決焦點問題
         * 當editView獲取焦點時,listview會重新繪製,致使editView的焦點光標失去
         */
        if (mTouchItemPosition == position) {
            viewHolder.editText.requestFocus();
            viewHolder.editText.setSelection(viewHolder.editText.getText().length());
        } else {
            viewHolder.editText.clearFocus();
        }
        return convertView;
    }

    class ViewHolder {
        EditText editText;
        MyTextChangeWatch mTextWatcher;
        //記錄position,防止數據複用時,錯亂
        public void upDataPosition(int position) {
            mTextWatcher.upDataPosition(position);
        }
    }

    class MyTextChangeWatch implements TextWatcher {
        private int position;

        public void upDataPosition(int position) {
            this.position = position;
        }

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

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {

        }

        @Override
        public void afterTextChanged(Editable s) {
            mData.put(position, s.toString());
            if(onChangedTextListener !=null){
            //使用回調將數據傳遞出去,進行數據檢測
                onChangedTextListener.onChangedTextListener(position, s.toString());
            }
        }
    }
    public void setOnChangedTextListener(OnChangedTextListener onChangedTextListener) {
        this.onChangedTextListener = onChangedTextListener;
    }
    interface OnChangedTextListener {
        void onChangedTextListener(int position, String str);
    }
}

感謝大神的分享,同時在學習的時候要根據個人的項目實際需求進行適當的更改.
參考學習文章: Listview結合EditText使用實例中遇到的那些坑