android listview滾動 edittext 數據就變了

解決方案:重寫BaseAdapter,然後自行獲取ListView中每行輸入的EditText值.

大概算法:重寫BaseAdapter.getView函數,用一個數組存儲EditText中的值,根據position即數組下標,在getView中動態更新EditText和動態獲取EditText中的值.因為ListView中的item是復用的,如果不動態清空或動態獲取EditText中值,就會出現數據紊亂,或者沒數據.那麼在生成EditText的時候要監控其值的變化.存儲下來.

package com.exmyth.android;

public class ListEditorAdapter extends BaseAdapter {
private LayoutInflater mInflater;
private List> mData;// 存儲的EditText值
public Map editorValue = new HashMap();//

public ListEditorAdapter(Context context, List> 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為null的時候初始化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());// 當EditText數據發生改變的時候存到data變量中
}
}
}
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中的輸入
public TextView userkey;// 用來定義的標志性主鍵,可不用關心
}
}