安卓Android控件ListView获取item中EditText值

可以明确,现在没有直接方法可以获得ListView中每一行EditText的值.

解决方案:重写BaseAdapter,然后自行获取ListView中每行输入的EditText值.

大概算法:重写BaseAdapter.getView函数,用一个数组存储EditText中的值,根据position即数组下标,在getView中动态更新EditText和动态获取EditText中的值.因为ListView中的item是复用的,如果不动态清空或动态获取EditText中值,就会出现数据紊乱,或者没数据.那么在生成EditText的时候要监控其值的变化.存储下来.

代码:

package com.exmyth.android;

public class ListEditorAdapter extends BaseAdapter {

    private LayoutInflater mInflater;

    private List<Map<String, Object>> mData;// 存储的EditText值

    public Map<String, String> editorValue = new HashMap<String, String>();//

    public ListEditorAdapter(Context context, List<Map<String, Object>> data) {

        mData = data;

        mInflater = LayoutInflater.from(context);

        init();

    }

    // 初始化

    private void init() {

        editorValue.clear();

    }

    @Override

    public int getCount() {

        return mData.size();

    }

    @Override

    public Object getItem(int position) {

        return null;

    }

    @Override

    public long getItemId(int position) {

        return 0;

    }

    private Integer index = -1;

    @Override

    public View getView(int position, View convertView, ViewGroup parent) {

        ViewHolder holder = null;

        // convertView为null的时候初始化convertView。

        if (convertView == null) {

            holder = new ViewHolder();

            convertView = mInflater.inflate(R.layout.listview_item, null);

            holder.name = (TextView) convertView

                    .findViewById(R.id.list_item_name);

            holder.title = (TextView) convertView

                    .findViewById(R.id.list_item_title);

            holder.value = (EditText) convertView

                    .findViewById(R.id.list_item_inputvalue);

            holder.value.setTag(position);

            holder.userkey = (TextView) convertView.findViewById(R.id.user_key);

            holder.value.setOnTouchListener(new OnTouchListener() {

                @Override

                public boolean onTouch(View v, MotionEvent event) {

                    if (event.getAction() == MotionEvent.ACTION_UP) {

                        index = (Integer) v.getTag();

                    }

                    return false;

                }

            });

            class MyTextWatcher implements TextWatcher {

                public MyTextWatcher(ViewHolder holder) {

                    mHolder = holder;

                }

                private ViewHolder mHolder;

                @Override

                public void onTextChanged(CharSequence s, int start,

                        int before, int count) {

                }

                @Override

                public void beforeTextChanged(CharSequence s, int start,

                        int count, int after) {

                }

                @Override

                public void afterTextChanged(Editable s) {

                    if (s != null && !"".equals(s.toString())) {

                        int position = (Integer) mHolder.value.getTag();

                        mData.get(position).put("list_item_inputvalue",

                                s.toString());// 当EditText数据发生改变的时候存到data变量中

                    }

                }

            }

            holder.value.addTextChangedListener(new MyTextWatcher(holder));

            convertView.setTag(holder);

        } else {

            holder = (ViewHolder) convertView.getTag();

            holder.value.setTag(position);

        }

        Object value = mData.get(position).get("list_item_name");

        if (value != null) {

            holder.name.setText((String) value);

        }

        value = mData.get(position).get("list_item_title");

        if (value != null) {

            holder.title.setText(value.toString());

        }

        value = mData.get(position).get("user_key");

        if (value != null) {

            holder.userkey.setText(value.toString());

        } else {

            holder.userkey.setText("-1");

        }

        value = mData.get(position).get("list_item_inputvalue");

        if (value != null && !"".equals(value)) {

            holder.value.setText(value.toString());

        } else {

            String key = mData.get(position).get("user_key").toString();

            String inputValue = editorValue.get(key);

            holder.value.setText(inputValue);

        }

        holder.value.clearFocus();

        if (index != -1 && index == position) {

            holder.value.requestFocus();

        }

        return convertView;

    }

    public final class ViewHolder {

        public TextView name;

        public TextView title;

        public EditText value;// ListView中的输入

        public TextView userkey;// 用来定义的标志性主键,可不用关心

    }

}

使用方法:

private List<Map<String, Object>> mCheckItemList = new ArrayList<Map<String, Object>>();

mAdapter = new ListEditorAdapter(this, mCheckItemList);

m_lvListView.setAdapter(mAdapter);

直接改变mCheckItemList中的数据,然后调用mAdapter.notifyDataSetChanged();就可以更新ListView的数据

当然,直接从mCheckItemList也可以获得用户在EditText中输入的数据.比较方便

其他:

ListView list= (ListView)findViewById(R.id.list);//获得listview

for (int i = 0; i < list.getChildCount(); i++) {
   LinearLayout layout = (LinearLayout)list.getChildAt(i);// 获得子item的layout
   EditText et = (EditText) layout.findViewById(R.id.et);// 从layout中获得控件,根据其id
// EditText et = (EditText) layout.getChildAt(1)//或者根据位置,在这我假设TextView在前，EditText在后

   System.out.println("the text of "+i+"'s EditText：----------->"+et.getText());
}

巴特西

安卓Android控件ListView获取item中EditText值

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