Android 读取与loader manager的联系人
我试图利用LoaderManager和CursorLoader读取联系人的电话号码。我能读懂联系人的姓名,但我不知道如何读懂电话号码。任何指导都将不胜感激Android 读取与loader manager的联系人,android,Android,我试图利用LoaderManager和CursorLoader读取联系人的电话号码。我能读懂联系人的姓名,但我不知道如何读懂电话号码。任何指导都将不胜感激 // These are the Contacts rows that we will retrieve. static final String[] CONTACTS_SUMMARY_PROJECTION = new String[] { Contacts._ID, Contacts.DISPLAY_NAME,
// These are the Contacts rows that we will retrieve.
static final String[] CONTACTS_SUMMARY_PROJECTION = new String[] {
Contacts._ID, Contacts.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER };
// This is the Adapter being used to display the list's data.
SimpleCursorAdapter mAdapter;
// If non-null, this is the current filter the user has provided.
String mCurFilter;
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
// Give some text to display if there is no data. In a real
// application this would come from a resource.
setEmptyText("No phone numbers");
// Create an empty adapter we will use to display the loaded data.
mAdapter = new SimpleCursorAdapter(getActivity(),
android.R.layout.simple_list_item_2, null, new String[] {
Contacts.DISPLAY_NAME, ContactsContract.CommonDataKinds.Phone.NUMBER },
new int[] { android.R.id.text1, android.R.id.text2 }, 0);
setListAdapter(mAdapter);
// Start out with a progress indicator.
setListShown(false);
// Prepare the loader. Either re-connect with an existing one,
// or start a new one.
getLoaderManager().initLoader(0, null, this);
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
Log.i("FragmentComplexList", "Item clicked: " + id);
}
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
// This is called when a new Loader needs to be created. This
// sample only has one Loader, so we don't care about the ID.
// First, pick the base URI to use depending on whether we are
// currently filtering.
Uri baseUri;
if (mCurFilter != null) {
baseUri = Uri.withAppendedPath(Contacts.CONTENT_FILTER_URI,
Uri.encode(mCurFilter));
} else {
baseUri = Contacts.CONTENT_URI;
}
// Now create and return a CursorLoader that will take care of
// creating a Cursor for the data being displayed.
String select = "((" + Contacts.DISPLAY_NAME + " NOTNULL) AND ("
+ Contacts.HAS_PHONE_NUMBER + "=1) AND ("
+ Contacts.DISPLAY_NAME + " != '' ))";
return new CursorLoader(getActivity(), baseUri,
CONTACTS_SUMMARY_PROJECTION, select, null,
Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC");
}
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
// Swap the new cursor in. (The framework will take care of closing the
// old cursor once we return.)
mAdapter.swapCursor(data);
// The list should now be shown.
if (isResumed()) {
setListShown(true);
} else {
setListShownNoAnimation(true);
}
}
public void onLoaderReset(Loader<Cursor> loader) {
// This is called when the last Cursor provided to onLoadFinished()
// above is about to be closed. We need to make sure we are no
// longer using it.
mAdapter.swapCursor(null);
}
//这些是我们将检索的联系人行。
静态最终字符串[]联系人\u摘要\u投影=新字符串[]{
联系人。\u ID,Contacts.DISPLAY\u NAME,
ContactsContract.CommonDataTypes.Phone.NUMBER};
//这是用于显示列表数据的适配器。
简单的适应;
//如果非空,则这是用户提供的当前筛选器。
串滤波器;
@凌驾
已创建ActivityState上的公共无效(Bundle savedInstanceState){
super.onActivityCreated(savedInstanceState);
//如果没有数据,则提供一些文本以显示。在实际
//应用程序这将来自一个资源。
setEmptyText(“无电话号码”);
//创建一个空适配器,用于显示加载的数据。
mAdapter=new SimpleCursorAdapter(getActivity(),
android.R.layout.simple_list_item_2,null,新字符串[]{
Contacts.DISPLAY_NAME,Contacts contract.commonDataTypes.Phone.NUMBER},
新的int[]{android.R.id.text1,android.R.id.text2},0);
setListAdapter(mAdapter);
//从进度指示器开始。
SetListShowed(假);
//准备加载程序。或者重新连接现有加载程序,
//或者开始一个新的。
getLoaderManager().initLoader(0,null,this);
}
@凌驾
public void onListItemClick(列表视图l、视图v、整数位置、长id){
Log.i(“FragmentComplexList”,“单击项:”+id);
}
公共加载器onCreateLoader(int-id,Bundle-args){
//当需要创建新加载程序时,将调用此函数
//示例只有一个加载程序,所以我们不关心ID。
//首先,选择要使用的基本URI,这取决于我们是否
//当前正在筛选。
uribaseuri;
if(mCurFilter!=null){
baseUri=Uri.withAppendedPath(Contacts.CONTENT\u FILTER\u Uri,
encode(mCurFilter));
}否则{
baseUri=Contacts.CONTENT\u URI;
}
//现在创建并返回一个游标加载程序,它将处理
//为正在显示的数据创建光标。
String select=“(“+Contacts.DISPLAY_NAME+”NOTNULL)和(”
+Contacts.HAS_PHONE_NUMBER+“=1)和(”
+Contacts.DISPLAY_NAME+“!=”);
返回新的游标装入器(getActivity(),baseUri,
联系人\u摘要\u投影,选择,空,
Contacts.DISPLAY_NAME+“核对本地化ASC”);
}
public void onLoadFinished(加载器、光标数据){
//在中交换新光标。(框架将负责关闭
//我们返回后,将返回旧光标。)
mAdapter.swapCursor(数据);
//现在应显示该列表。
如果(isResumed()){
SetListShowed(真);
}否则{
SetListShownAnimation(真);
}
}
公共void onLoaderReset(加载器){
//当提供给onLoadFinished()的最后一个游标时调用
//以上内容即将关闭。我们需要确保我们没有
//不再使用它。
mAdapter.swapCursor(空);
}
试试这个。。这对我有用
// This is the Adapter being used to display the list's data.
SimpleCursorAdapter mAdapter;
// If non-null, this is the current filter the user has provided.
String mCurFilter;
@Override public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
// Give some text to display if there is no data. In a real
// application this would come from a resource.
setEmptyText("No phone numbers");
// We have a menu item to show in action bar.
setHasOptionsMenu(true);
// Create an empty adapter we will use to display the loaded data.
mAdapter = new SimpleCursorAdapter(getActivity(),
android.R.layout.simple_list_item_1, null,
new String[] { ContactsContract.CommonDataKinds.Phone.NUMBER, },
new int[] { android.R.id.text1}, 0);
setListAdapter(mAdapter);
// Start out with a progress indicator.
setListShown(false);
// Prepare the loader. Either re-connect with an existing one,
// or start a new one.
getLoaderManager().initLoader(0, null, this);
}
@Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
// Place an action bar item for searching.
MenuItem item = menu.add("Search");
item.setIcon(android.R.drawable.ic_menu_search);
item.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
View searchView = SearchViewCompat.newSearchView(getActivity());
if (searchView != null) {
SearchViewCompat.setOnQueryTextListener(searchView,
new OnQueryTextListenerCompat() {
@Override
public boolean onQueryTextChange(String newText) {
// Called when the action bar search text has changed. Update
// the search filter, and restart the loader to do a new query
// with this filter.
mCurFilter = !TextUtils.isEmpty(newText) ? newText : null;
getLoaderManager().restartLoader(0, null, CursorLoaderListFragment.this);
return true;
}
});
item.setActionView(searchView);
}
}
@Override public void onListItemClick(ListView l, View v, int position, long id) {
// Insert desired behavior here.
Log.i("FragmentComplexList", "Item clicked: " + id);
}
// These are the Contacts rows that we will retrieve.
static final String[] CONTACTS_SUMMARY_PROJECTION = new String[] {
ContactsContract.CommonDataKinds.Phone._ID,
ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER,
};
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
// This is called when a new Loader needs to be created. This
// sample only has one Loader, so we don't care about the ID.
// First, pick the base URI to use depending on whether we are
// currently filtering.
Uri baseUri;
if (mCurFilter != null) {
baseUri = Uri.withAppendedPath(ContactsContract.CommonDataKinds.Phone.CONTENT_FILTER_URI, Uri.encode(mCurFilter));
} else {
baseUri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
}
// Now create and return a CursorLoader that will take care of
// creating a Cursor for the data being displayed.
String select = "((" + ContactsContract.Contacts.DISPLAY_NAME + " NOTNULL) AND ("
+ ContactsContract.Contacts.DISPLAY_NAME + " != '' )" + "AND ("+ContactsContract.Contacts.HAS_PHONE_NUMBER +" != '0'"+"))";
return new CursorLoader(getActivity(), baseUri,
CONTACTS_SUMMARY_PROJECTION, null, null,
null + " COLLATE LOCALIZED ASC");
}
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
// Swap the new cursor in. (The framework will take care of closing the
// old cursor once we return.)
mAdapter.swapCursor(data);
// The list should now be shown.
if (isResumed()) {
setListShown(true);
} else {
setListShownNoAnimation(true);
}
}
public void onLoaderReset(Loader<Cursor> loader) {
// This is called when the last Cursor provided to onLoadFinished()
// above is about to be closed. We need to make sure we are no
// longer using it.
mAdapter.swapCursor(null);
}
}
//这是用于显示列表数据的适配器。
简单的适应;
//如果非空,则这是用户提供的当前筛选器。
串滤波器;
@在ActivityCreated(Bundle savedInstanceState)上重写公共void{
super.onActivityCreated(savedInstanceState);
//如果没有数据,则提供一些文本以显示。在实际
//应用程序这将来自一个资源。
setEmptyText(“无电话号码”);
//我们有一个菜单项显示在行动栏。
设置选项菜单(真);
//创建一个空适配器,用于显示加载的数据。
mAdapter=new SimpleCursorAdapter(getActivity(),
android.R.layout.simple_list_item_1,null,
新字符串[]{ContactsContract.CommonDataTypes.Phone.NUMBER,},
新的int[]{android.R.id.text1},0);
setListAdapter(mAdapter);
//从进度指示器开始。
SetListShowed(假);
//准备加载程序。或者重新连接现有加载程序,
//或者开始一个新的。
getLoaderManager().initLoader(0,null,this);
}
@覆盖创建选项菜单(菜单菜单,菜单充气机){
//放置一个用于搜索的操作栏项。
MenuItem item=menu.add(“搜索”);
设置图标(android.R.drawable.ic\u菜单\u搜索);
item.setShowAsAction(菜单项始终显示为动作);
View searchView=SearchViewCompat.newSearchView(getActivity());
if(searchView!=null){
SearchViewCompat.setOnQueryTextListener(searchView,
新OnQueryTextListenerCompat(){
@凌驾
公共布尔onQueryTextChange(字符串newText){
//当操作栏搜索文本已更改时调用。更新
//搜索筛选器,然后重新启动加载程序以执行新查询
//用这个过滤器。
mCurFilter=!TextUtils.isEmpty(newText)?newText:null;
getLoaderManager().restartLoader(0,null,CursorLoaderListFragment.this);
返回true;
}
});
item.setActionView(searchView);
}
}
@重写公共void onListItemClick(列表视图l、视图v、整型位置、长id){
//在此处插入所需的行为。
Log.i(“FragmentComplexList”,“单击项:”+id);
}
//这些是我们将检索的联系人行。
静态最终字符串[]联系人\u摘要\u投影=新字符串[]{
Contacts contract.CommonDataTypes.Phone.\u ID,
contacts contract.CommonDat