SimpleAdapter adapter = new SimpleAdapter(DialogListDemothis,
getData(), Rlayoutlistview, new String[] { "text",
"text1", "text2", "img" }, new int[] {
RidL_TextView01, RidL_TextView03,
RidL_TextView04, RidL_ImageButton01 });
lvsetAdapter(adapter);
private List<Map<String, Object>> getData() {
List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
Map<String, Object> map = new HashMap<String, Object>();
Cursor cur = DRquery("myuser", new String[] { "userID", "psd" ,"repsd"}, null,
null, null, null, null);
while (curmoveToNext()) {
String name2 = curgetString(0);
String psd2 = curgetString(1);
String repsd= curgetString(2);
mapput("text",repsd);
mapput("text1", name2);
mapput("text2", psd2);
mapput("img", Rdrawablea35);
listadd(map);
// }
}
我这里面是写数据插入的(片段代码) ,所以不确定要插入多少个 应用while (curmoveToNext()) {
}用游标对数据库进行遍历 然后插入到listview里面
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BaseAdaptergetView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
举例代码:
package comexmythandroid;
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 = LayoutInflaterfrom(context);
init();
}
// 初始化
private void init() {
editorValueclear();
}
@Override
public int getCount() {
return mDatasize();
}
@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 = mInflaterinflate(Rlayoutlistview_item, null);
holdername = (TextView) convertView
findViewById(Ridlist_item_name);
holdertitle = (TextView) convertView
findViewById(Ridlist_item_title);
holdervalue = (EditText) convertView
findViewById(Ridlist_item_inputvalue);
holdervaluesetTag(position);
holderuserkey = (TextView) convertViewfindViewById(Riduser_key);
holdervaluesetOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (eventgetAction() == MotionEventACTION_UP) {
index = (Integer) vgetTag();
}
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(stoString())) {
int position = (Integer) mHoldervaluegetTag();
mDataget(position)put("list_item_inputvalue",
stoString());// 当EditText数据发生改变的时候存到data变量中
}
}
}
holdervalueaddTextChangedListener(new MyTextWatcher(holder));
convertViewsetTag(holder);
} else {
holder = (ViewHolder) convertViewgetTag();
holdervaluesetTag(position);
}
Object value = mDataget(position)get("list_item_name");
if (value != null) {
holdernamesetText((String) value);
}
value = mDataget(position)get("list_item_title");
if (value != null) {
holdertitlesetText(valuetoString());
}
value = mDataget(position)get("user_key");
if (value != null) {
holderuserkeysetText(valuetoString());
} else {
holderuserkeysetText("-1");
}
value = mDataget(position)get("list_item_inputvalue");
if (value != null && !""equals(value)) {
holdervaluesetText(valuetoString());
} else {
String key = mDataget(position)get("user_key")toString();
String inputValue = editorValueget(key);
holdervaluesetText(inputValue);
}
holdervalueclearFocus();
if (index != -1 && index == position) {
holdervaluerequestFocus();
}
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
}
}
1、在listitem中初始化button的时候,给该button添加一个setTag方法,将此时的索引值传进去,然后在button的onclick事件中调用view的getTag方法,即可将listitem的索引读出来,代码如下:
tagButtonsetTag(position);
此处的tagButton就是定义的button,Position是view里边的位置。
2、初始化button的时候通过setTag方法传入一个item的索引值
private OnClickListener tagButtonOnClick = new OnClickListener() {
public void onClick(View v) {
final int index = (Integer) vgetTag();
}
}
index就是点击button所在Item中的位置,通过这个位置就可以得到Item中的值。
以上就是关于急~!Android listView 怎么样显示条数 比如:数据的条数不确定有的有5条,有的有4条应该怎么显示全部的内容,包括:急~!Android listView 怎么样显示条数 比如:数据的条数不确定有的有5条,有的有4条应该怎么显示、android怎么获取listview上内容、android ListView如何获取点击item所在的哪一行等相关内容解答,如果想了解更多相关内容,可以关注我们,你们的支持是我们更新的动力!
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