Android 可检查显示所选的错误项目(使用simpleCursor+;自定义布局)
我的自定义listview中有一个问题,当我搜索列表视图的内容时,它似乎显示了错误的所选项目。(查看下面的屏幕截图,您将了解)Android 可检查显示所选的错误项目(使用simpleCursor+;自定义布局),android,listview,Android,Listview,我的自定义listview中有一个问题,当我搜索列表视图的内容时,它似乎显示了错误的所选项目。(查看下面的屏幕截图,您将了解) 使用名称aa搜索并选择两行(AABBCCC和AABC) 我用Na搜索过,但没有选择行(Jana和Nathan)。但它显示为选中状态 删除了所有搜索项,删除搜索后我没有选择任何行。它应该显示两行(AABBCC和AABC),但它显示的是错误的行Jana 我不知道如何克服上述行为。我必须根据rowid而不是职位进行联系。 哪个类将跟踪列表中选定的项目?如何覆盖上述行为???
Search Name(EditText) [Done Btn]
---------------------------------------
Contact_name_1
Phone_no
---------------------------------------
Contact_name_2
Phone_no2
---------------------------------------
Contact_name_3
Phone_no3
---------------------------------------
带有可检查项的自定义布局..
public class CustomCheckableLists extends RelativeLayout implements Checkable {
private Checkable mCheckable;
public CustomCheckableLists(Context context) {
super(context);
}
public CustomCheckableLists(Context context, AttributeSet attrs)
{
super(context,attrs);
}
public boolean isChecked() {
return mCheckable == null ? false : mCheckable.isChecked();
//return false;
}
public void setChecked(boolean checked) {
if(mCheckable != null)
mCheckable.setChecked(checked);
}
public void toggle() {
if(mCheckable != null)
mCheckable.toggle();
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
//Find items id..
Log.w("onFinishInflate","onFinishInflate");
// Find Checkable child
int childCount = getChildCount();
for (int i = 0; i < childCount; ++i) {
View v = getChildAt(i);
if (v instanceof Checkable) {
mCheckable = (Checkable) v;
break;
}
}
}
感谢您的帮助。提前谢谢
编辑
<CustomCheckableLists
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="?android:attr/listPreferredItemHeight"
android:gravity="center_vertical"
android:orientation="horizontal"
>
<TextView
android:id="@+id/id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="name"
android:visibility="invisible"
/>
<TextView
android:id="@+id/text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="nuoo"
/>
<CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/phonenu"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:checkMark="?android:attr/textCheckMark"
android:gravity="center_vertical"
android:paddingLeft="3dp"
android:paddingRight="6dp"
android:paddingTop="25dip"
/>
</CustomCheckableLists>
每当用户搜索任何名称时,都会形成一个查询以返回搜索结果。
代码如下
searchNameOrNumber = (EditText) findViewById(R.id.searchText);
searchNameOrNumber.addTextChangedListener(new TextWatcher()
{
public void onTextChanged(CharSequence searchterm, int start, int before, int count) {
Log.w("Text Searched.. ", " " + searchterm);
dataAdapter.getFilter().filter(searchterm.toString());
//dataAdapter.notifyDataSetChanged();
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
public void afterTextChanged(Editable s) {
}
});
dataAdapter.setFilterQueryProvider(new FilterQueryProvider() {
public Cursor runQuery(CharSequence constraint) {
Log.w("Searched Query..,", constraint.toString());
);
return getSearchedContacts(constraint.toString());
}
});
public Cursor getSearchedContacts(String inputText)
{
Log.w("inputText",inputText);
Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
String[] projection = new String[] {
ContactsContract.Contacts._ID,
ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER
};
String selection = ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " like '%" + inputText + "%'";
Cursor people = getContentResolver().query(uri, projection, selection, null, null);
int indexName = people.getColumnIndex(StructuredName.DISPLAY_NAME);
int indexNumber = people.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
int idIdx = people.getColumnIndexOrThrow(PhoneLookup._ID);
if(!people.moveToFirst())
{
Log.w("No Cursor.., ","No cursor.., Cursor is empty..");
}
do {
String id = people.getString(idIdx);
String name = people.getString(indexName);
String number = people.getString(indexNumber);
// Do work...
} while (people.moveToNext());
return people;
}
您需要创建一个自定义适配器并在那里跟踪选中的项。您看到这种行为的原因是,
SimpleCursorAdapter
正在回收视图,不知道如何处理选中状态,只设置文本标签,保持选中状态与以前一样
查看此行为的另一种方式是使用多个项目屏幕,选中一些项目,然后滚动,您还会注意到在滚动时随机项目会被选中/取消选中
您可以查看如何使其工作的完整示例
如果您使用此选项进行搜索,则每次筛选时都必须清除选中位置的列表
searchNameOrNumber = (EditText) findViewById(R.id.searchText);
searchNameOrNumber.addTextChangedListener(new TextWatcher()
{
public void onTextChanged(CharSequence searchterm, int start, int before, int count) {
Log.w("Text Searched.. ", " " + searchterm);
dataAdapter.getFilter().filter(searchterm.toString());
//dataAdapter.notifyDataSetChanged();
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
public void afterTextChanged(Editable s) {
}
});
dataAdapter.setFilterQueryProvider(new FilterQueryProvider() {
public Cursor runQuery(CharSequence constraint) {
Log.w("Searched Query..,", constraint.toString());
);
return getSearchedContacts(constraint.toString());
}
});
public Cursor getSearchedContacts(String inputText)
{
Log.w("inputText",inputText);
Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
String[] projection = new String[] {
ContactsContract.Contacts._ID,
ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER
};
String selection = ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " like '%" + inputText + "%'";
Cursor people = getContentResolver().query(uri, projection, selection, null, null);
int indexName = people.getColumnIndex(StructuredName.DISPLAY_NAME);
int indexNumber = people.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
int idIdx = people.getColumnIndexOrThrow(PhoneLookup._ID);
if(!people.moveToFirst())
{
Log.w("No Cursor.., ","No cursor.., Cursor is empty..");
}
do {
String id = people.getString(idIdx);
String name = people.getString(indexName);
String number = people.getString(indexNumber);
// Do work...
} while (people.moveToNext());
return people;
}