Android CheckedTextView从SimpleCursorAdapter加载默认值
我有一个适配器，它使用Android CheckedTextView从SimpleCursorAdapter加载默认值,android,android-listview,simplecursoradapter,checkedtextview,android-viewbinder,Android,Android Listview,Simplecursoradapter,Checkedtextview,Android Viewbinder,我有一个适配器，它使用CheckedTextView并从SimpleCursorAdapter扩展而来。我试图加载CheckTextView的默认值，但没有成功。我不知道这是CheckedTextView的行为还是我做错了什么 我试过什么？ 我试图覆盖getView（）方法，获取CheckedTextView视图并使用setChecked（boolean），失败了，奇怪的是它不起作用 然后我尝试使用ViewBinder，但这也不起作用 对这个问题有什么见解吗 adapter.setViewBin
CheckedTextViewSimpleCursorAdapterCheckTextViewCheckedTextViewgetView（）CheckedTextViewsetChecked（boolean）ViewBinderadapter.setViewBinder(new SimpleCursorAdapter.ViewBinder() {
public boolean setViewValue(View view, Cursor cursor,
int columnIndex) {
CheckedTextView cb = (CheckedTextView) view;
int checked=cursor.getInt(cursor.getColumnIndex(ProgramSurvey.CHECKED));
cb.setChecked(checked==1);
return false;
}
});
如果从getView返回的视图是CheckedTextView（或实现Checkable的任何其他视图），则listView将根据它认为选中的行（从对setItemChecked的调用中）在相关行上设置checked。您需要告诉ListView哪些行被选中，而不是自己设置，或者将视图包装到一个不实现checkable的视图中，然后您就可以在CheckedTextView中自己设置checked了。这实际上有助于@superfell的想法，但由于我的活页夹依赖于光标，我不得不从ListView中重新查询已点击的页面，如下所示
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterlist, View view,
int pos, long id) {
CheckedTextView checkBox = (CheckedTextView) view
.findViewById(R.id.checkTextProgram);
CursorWrapper cursor = (CursorWrapper) adapterlist
.getItemAtPosition(pos);
if (checkBox.isChecked()) {
String programId = cursor.getString(cursor
.getColumnIndex(Program._ID));
getActivity().getContentResolver().delete(
ProgramSurvey.buildUri(_ID),
ProgramSurvey.PROGRAM_ID + "=?",
new String[] { programId });
} else {
ContentValues values = new ContentValues();
values.put(ProgramSurvey.PROGRAM_ID, cursor
.getString(cursor.getColumnIndex(Program._ID)));
values.put(ProgramSurvey.SURVEY_ID, _ID);
getActivity().getContentResolver().insert(
ProgramSurvey.CONTENT_URI, values);
}
getLoaderManager().restartLoader(0, null, ProgramDialogFragment.this);
}
});
lv.setOnItemClickListener（新的OnItemClickListener（）{
@凌驾
public void onItemClick（适配器视图适配器列表、视图、，
内部位置，长id）{
CheckedTextView复选框=（CheckedTextView）视图
.findviewbyd（R.id.checkTextProgram）；
游标包装器游标=（游标包装器）适配器列表
.getItemAtPosition（pos）；
如果（checkBox.isChecked（））{
String programId=cursor.getString（游标
.getColumnIndex（Program._ID））；
getActivity（）.getContentResolver（）.delete(
ProgramSurvey.buildUri（_ID），
ProgramSurvey.PROGRAM_ID+“=？”，
新字符串[]{programId}）；
}否则{
ContentValues=新的ContentValues（）；
value.put（ProgramSurvey.PROGRAM_ID，光标
.getString（cursor.getColumnIndex（Program.u ID））；
value.put（ProgramSurvey.SURVEY\u ID，\u ID）；
getActivity（）.getContentResolver（）.insert(
ProgramSurvey.CONTENT_URI，值）；
}
getLoaderManager（）.restartLoader（0，null，ProgramDialogFragment.this）；
}
});
因此，我使用加载器管理器按需重新查询光标。我只是尝试膨胀布局（android.R.layout.simple\u list\u item\u multiple\u Choose）…它提供简单修改的复选框图像、文本视图颜色和填充。它类似于checkedTextview 适配器类：
public class CustomListAdapter extends BaseAdapter {
private String[] stringArray;
private Context mContext;
private LayoutInflater inflator;
int checkbox;
/**
*
* @param context
* @param stringArray
*/
public CustomListAdapter(Context context, String[] stringArray)
{
this.mContext=context;
this.stringArray=stringArray;
this.inflator= (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount()
{
return stringArray.length;
}
@Override
public Object getItem(int position)
{
return position;
}
@Override
public long getItemId(int position)
{
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
final MainListHolder mHolder;
View v = convertView;
if (convertView == null)
{
mHolder = new MainListHolder();
v = inflator.inflate(android.R.layout.simple_list_item_multiple_choice, null);
mHolder.txt=(CheckedTextView) v.findViewById(android.R.id.text1);
v.setTag(mHolder);
}
else
{
mHolder = (MainListHolder) v.getTag();
}
mHolder.txt.setText(stringArray[position]);
mHolder.txt.setTextSize(12);
mHolder.txt.setTextColor(Color.YELLOW);
/**
* When checkbox image is set By setImageFromResourceCheckBox(int id) method...Otherwise it takes default
*/
if(checkbox!=0)
mHolder.txt.setCheckMarkDrawable(R.drawable.android_button);
mHolder.txt.setPadding(5, 5, 5, 5);
return v;
}
class MainListHolder
{
private CheckedTextView txt;
}
/***
* Setting Image for Checkbox
* @param id
*
*/
public void setImageFromResourceCheckBox(int id)
{
this.checkbox=id;
}
}
public class CheckedListActivity extends ListActivity implements OnItemClickListener {
//final String[] str={"Android","Black Berry","Iphone","Ipad"};
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
CustomListAdapter c=new CustomListAdapter(this,GENRES);
c.setImageFromResourceCheckBox(R.drawable.android_button);
setListAdapter(c);
final ListView listView = getListView();
listView.setItemsCanFocus(false);
//listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);// For single mOde
listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
//used for default selection .....
listView.setItemChecked(2, true);
listView.setOnItemClickListener(this);
}
private static final String[] GENRES = new String[]
{
"Action", "Adventure", "Animation", "Children", "Comedy", "Documentary", "Drama",
"Foreign", "History", "Independent", "Romance", "Sci-Fi", "Television", "Thriller"
};
@Override
public void onItemClick(AdapterView<?> adapter, View arg1, int arg2, long arg3)
{
SparseBooleanArray sp=getListView().getCheckedItemPositions();
String str="";
for(int i=0;i<sp.size();i++)
{
str+=GENRES[sp.keyAt(i)]+",";
}
Toast.makeText(this, ""+str, Toast.LENGTH_SHORT).show();
}
}
public class CustomListAdapter extends BaseAdapter {
private String[] stringArray;
private Context mContext;
private LayoutInflater inflator;
int checkbox;
/**
*
* @param context
* @param stringArray
*/
public CustomListAdapter(Context context, String[] stringArray)
{
this.mContext=context;
this.stringArray=stringArray;
this.inflator= (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount()
{
return stringArray.length;
}
@Override
public Object getItem(int position)
{
return position;
}
@Override
public long getItemId(int position)
{
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
final MainListHolder mHolder;
View v = convertView;
if (convertView == null)
{
mHolder = new MainListHolder();
v = inflator.inflate(android.R.layout.simple_list_item_multiple_choice, null);
mHolder.txt=(CheckedTextView) v.findViewById(android.R.id.text1);
v.setTag(mHolder);
}
else
{
mHolder = (MainListHolder) v.getTag();
}
mHolder.txt.setText(stringArray[position]);
mHolder.txt.setTextSize(12);
mHolder.txt.setTextColor(Color.YELLOW);
/**
* When checkbox image is set By setImageFromResourceCheckBox(int id) method...Otherwise it takes default
*/
if(checkbox!=0)
mHolder.txt.setCheckMarkDrawable(R.drawable.android_button);
mHolder.txt.setPadding(5, 5, 5, 5);
return v;
}
class MainListHolder
{
private CheckedTextView txt;
}
/***
* Setting Image for Checkbox
* @param id
*
*/
public void setImageFromResourceCheckBox(int id)
{
this.checkbox=id;
}
}
public class CheckedListActivity extends ListActivity implements OnItemClickListener {
//final String[] str={"Android","Black Berry","Iphone","Ipad"};
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
CustomListAdapter c=new CustomListAdapter(this,GENRES);
c.setImageFromResourceCheckBox(R.drawable.android_button);
setListAdapter(c);
final ListView listView = getListView();
listView.setItemsCanFocus(false);
//listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);// For single mOde
listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
//used for default selection .....
listView.setItemChecked(2, true);
listView.setOnItemClickListener(this);
}
private static final String[] GENRES = new String[]
{
"Action", "Adventure", "Animation", "Children", "Comedy", "Documentary", "Drama",
"Foreign", "History", "Independent", "Romance", "Sci-Fi", "Television", "Thriller"
};
@Override
public void onItemClick(AdapterView<?> adapter, View arg1, int arg2, long arg3)
{
SparseBooleanArray sp=getListView().getCheckedItemPositions();
String str="";
for(int i=0;i<sp.size();i++)
{
str+=GENRES[sp.keyAt(i)]+",";
}
Toast.makeText(this, ""+str, Toast.LENGTH_SHORT).show();
}
}
公共类CheckedListActivity扩展ListActivity实现ListListener{
//最后一个字符串[]str={“安卓”、“黑莓”、“Iphone”、“Ipad”}；
/**在首次创建活动时调用*/
@凌驾
创建时的公共void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
CustomListAdapter c=新的CustomListAdapter（此，类型）；
c、 setImageFromResourceCheckBox（R.drawable.android_按钮）；
setListAdapter（c）；
最终ListView ListView=getListView（）；
setItemsCanFocus（false）；
//listView.setChoiceMode（listView.CHOICE_MODE_SINGLE）；//用于单一模式
listView.setChoiceMode（listView.CHOICE\u MODE\u MULTIPLE）；
//用于默认选择。。。。。
setItemChecked（2，true）；
setOnItemClickListener（this）；
}
私有静态最终字符串[]类型=新字符串[]
{
“动作”、“冒险”、“动画”、“儿童”、“喜剧”、“纪录片”、“戏剧”，
“外国”、“历史”、“独立”、“浪漫”、“科幻”、“电视”、“惊悚片”
};
@凌驾
公共链接（AdapterView适配器、视图arg1、int arg2、long arg3）
{
SparseBooleanArray sp=getListView（）.GetCheckEditePositions（）；
字符串str=“”；
对于（int i=0；i您可以尝试以下方法：
listview.setItemChecked(position,true);
你能发布你的视图绑定代码示例吗？“将你的视图包装在一个不实现可检查的视图中”我尝试了这个，但当我尝试检查它们时，它不允许我这样做。。。