安卓：我怎样才能访问电子邮件地址的android [英] Android: How can i access email addresses in android
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问题描述
我有以下的code，通过它，我能够检索电话号码。不知怎的，我不能够使用android.provider.Contacts.People API来检索电子邮件地址。任何想法？
进口android.app.AlertDialog;
进口android.app.ExpandableListActivity;
进口android.content.ContentUris;
进口android.content.Context;
进口android.database.Cursor;
进口android.net.Uri;
进口android.os.Bundle;
进口android.provider.Contacts.People;
进口android.view.View;
进口android.widget.ExpandableListAdapter;
进口android.widget.SimpleCursorTreeAdapter;
进口android.widget.TextView;
进口android.widget.ExpandableListView.OnChildClickListener;
公共类ShowContacts扩展ExpandableListActivity实现OnChildClickListener {
私人诠释mGroupIdColumnIndex;
私人字符串mPhoneNumberProjection [] =新的String [] {
People.Phones._ID，People.NUMBER //改变这里
};
私人ExpandableListAdapter mAdapter;
@覆盖
公共无效的onCreate（包savedInstanceState）{
super.onCreate（savedInstanceState）;
//查询人
光标groupCursor = managedQuery（People.CONTENT_URI，
新的String [] {People._ID，People.NAME}，NULL，NULL，NULL）;
//缓存中的ID列索引
mGroupIdColumnIndex = groupCursor.getColumnIndexOrThrow（People._ID）;
//设置我们的适配器
mAdapter =新MyExpandableListAdapter（groupCursor，
本，
android.R.layout.simple_expandable_list_item_1，
android.R.layout.simple_expandable_list_item_1，
新的String [] {} People.NAME，//名称为组布局
新的INT [] {} android.R.id.text1，
新的String [] {} People.NUMBER，//和零钱。
新的INT [] {android.R.id.text1}）;
setListAdapter（mAdapter）;
}
公共类MyExpandableListAdapter扩展SimpleCursorTreeAdapter {
公共MyExpandableListAdapter（光标指针，上下文语境，诠释的GroupLayout，
INT childLayout，字符串[] groupFrom，INT [] groupTo，字符串[] childrenFrom，
INT [] childrenTo）{
超（背景下，光标的GroupLayout，groupFrom，groupTo，childLayout，childrenFrom，
childrenTo）;
}
@覆盖
受保护的光标getChildrenCursor（光标groupCursor）{
//由于组，我们返回游标该组内的所有儿童
//返回一个指针指向该联系人的电话号码
Uri.Builder建设者= People.CONTENT_URI.buildUpon（）;
ContentUris.appendId（制造商，groupCursor.getLong（mGroupIdColumnIndex））;
builder.appendEn codeDPATH（People.Phones.CONTENT_DIRECTORY）;
乌里phoneNumbersUri = builder.build（）;
返回managedQuery（phoneNumbersUri，mPhoneNumberProjection，NULL，NULL，NULL）;
}
}
@覆盖
公共布尔onChildClick（android.widget.ExpandableListView父母，
视图V，INT groupPosition，诠释childPosition，长ID）{
AlertDialog对话框=新AlertDialog.Builder（ShowContacts.this）
.setMessage（（（TextView中）V）.getText（）的toString（））
.setPositiveButton（OK，NULL）.create（）;
dialog.show（）;
返回true;
}
}
解决方案
所推荐的 CommonsWare 你应该使用有条件的类加载来支持这两种模式。无论如何，一个快速和肮脏的解决办法是：
私有静态最后弦乐CONTACT_METHODS_PROJECTION [] =新的String [] {
Contacts.ContactMethods._ID，
Contacts.ContactMethods.DATA
};
私有静态最终诠释ID_COLUMN_INDEX = 0;
@覆盖
受保护的光标getChildrenCursor（光标groupCursor）{
//由于组，我们返回游标该组内的所有儿童
返回managedQuery（Contacts.ContactMethods.CONTENT_URI，CONTACT_METHODS_PROJECTION，
ContactMethods.PERSON_ID +=？和+ ContactMethods.KIND +=+ Contacts.KIND_EMAIL，
新的String [] {Long.toString（groupCursor.getLong（ID_COLUMN_INDEX））}，
空值）;
}
I have the following code through which i am able to retrieve phone numbers. Somehow , i am not able to retrieve email addresses by using android.provider.Contacts.People API. Any ideas?
import android.app.AlertDialog;
import android.app.ExpandableListActivity;
import android.content.ContentUris;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Contacts.People;
import android.view.View;
import android.widget.ExpandableListAdapter;
import android.widget.SimpleCursorTreeAdapter;
import android.widget.TextView;
import android.widget.ExpandableListView.OnChildClickListener;
public class ShowContacts extends ExpandableListActivity implements OnChildClickListener {
private int mGroupIdColumnIndex;
private String mPhoneNumberProjection[] = new String[] {
People.Phones._ID, People.NUMBER // CHANGE HERE
};
private ExpandableListAdapter mAdapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Query for people
Cursor groupCursor = managedQuery(People.CONTENT_URI,
new String[] {People._ID, People.NAME}, null, null, null);
// Cache the ID column index
mGroupIdColumnIndex = groupCursor.getColumnIndexOrThrow(People._ID);
// Set up our adapter
mAdapter = new MyExpandableListAdapter(groupCursor,
this,
android.R.layout.simple_expandable_list_item_1,
android.R.layout.simple_expandable_list_item_1,
new String[] {People.NAME}, // Name for group layouts
new int[] {android.R.id.text1},
new String[] {People.NUMBER}, // AND CHANGE HERE
new int[] {android.R.id.text1});
setListAdapter(mAdapter);
}
public class MyExpandableListAdapter extends SimpleCursorTreeAdapter {
public MyExpandableListAdapter(Cursor cursor, Context context, int groupLayout,
int childLayout, String[] groupFrom, int[] groupTo, String[] childrenFrom,
int[] childrenTo) {
super(context, cursor, groupLayout, groupFrom, groupTo, childLayout, childrenFrom,
childrenTo);
}
@Override
protected Cursor getChildrenCursor(Cursor groupCursor) {
// Given the group, we return a cursor for all the children within that group
// Return a cursor that points to this contact's phone numbers
Uri.Builder builder = People.CONTENT_URI.buildUpon();
ContentUris.appendId(builder, groupCursor.getLong(mGroupIdColumnIndex));
builder.appendEncodedPath(People.Phones.CONTENT_DIRECTORY);
Uri phoneNumbersUri = builder.build();
return managedQuery(phoneNumbersUri, mPhoneNumberProjection, null, null, null);
}
}
@Override
public boolean onChildClick(android.widget.ExpandableListView parent,
View v, int groupPosition, int childPosition, long id) {
AlertDialog dialog = new AlertDialog.Builder(ShowContacts.this)
.setMessage(((TextView) v).getText().toString())
.setPositiveButton("OK", null).create();
dialog.show();
return true;
}
}
解决方案
As recommended by CommonsWare you should use conditional class loading to support both models. Anyway, a quick and dirty solution is:
private static final String CONTACT_METHODS_PROJECTION[] = new String[] {
Contacts.ContactMethods._ID,
Contacts.ContactMethods.DATA
};
private static final int ID_COLUMN_INDEX = 0;
@Override
protected Cursor getChildrenCursor(Cursor groupCursor) {
// Given the group, we return a cursor for all the children within that group
return managedQuery(Contacts.ContactMethods.CONTENT_URI, CONTACT_METHODS_PROJECTION,
ContactMethods.PERSON_ID + "= ? AND " + ContactMethods.KIND + " = " + Contacts.KIND_EMAIL,
new String[] { Long.toString(groupCursor.getLong(ID_COLUMN_INDEX)) },
null);
}
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