快崩溃了，大神帮忙看看错在哪里？一直提示Cursor错误
/*------四大组件--ContentProvider----用来查询手机联系人
* 1，创建MyContentProvider类来继承ContentProvider实现
* 2，利用ContentResolver类接受getContentResolver()返回的对象来实现
* 3,1和2的实现是一样的，他们都有相同的方法
* --------------注意要在AndroidManiFest中加入联系人读取权限----------------------
* */
package com.example.s3_contentprovider_demo1;
import android.app.Activity;
import android.content.ContentResolver;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.provider.ContactsContract.CommonDataKinds.Email;
import android.provider.ContactsContract.CommonDataKinds.Phone;
import android.provider.ContactsContract.Contacts;
import android.util.Log;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/* ContentResolver对象和ContentProvider对象是一样的，都有同样的方法 */
ContentResolver cr = getContentResolver();
//游标接受查询结果
Cursor c1 = cr.query(Contacts.CONTENT_URI, new String[]{Contacts._ID,Contacts.DISPLAY_NAME}, null, null, null);
if (c1!=null) {
//c1.moveToFirst();
while(c1.moveToNext()){
int id = c1.getInt(c1.getColumnIndex("_ID"));
String name = c1.getString(c1.getColumnIndex("DISPLAY_NAME"));
Log.i("xyz", "id: "+id);
Log.i("xyz", "name: "+name);
Log.i("xyz", "test...1..");
/*--------- 根据联系人的 ID 查询当前联系人的电话号码和类型 -------- */
Cursor c2 = cr.query(Phone.CONTENT_URI, new String[]{Phone.NUMBER,Phone.TYPE}, Phone.CONTACT_ID + "=" + id, null, null);
Log.i("xyz", "test...22222..");
if(c2!=null){
//c2.moveToFirst();
while(c2.moveToNext()){
//获得电话类型 用整型 来接收
int type = c2.getInt(c2.getColumnIndex("Phone.TYPE"));
if (type==Phone.TYPE_HOME) {//如果是家庭电话
Log.i("xyz", "家庭电话 :"+c2.getString(c2.getColumnIndex("Phone.NUMBER")));
}else if (type==Phone.TYPE_MOBILE) {//如果是移动电话
Log.i("xyz", "手机号码 :"+c2.getString(c2.getColumnIndex("Phone.NUMBER")));
}
}
c2.close();
}
/*--------- 通过联系人的 ID 来查询联系人的email邮箱 ----------*/
Cursor c3 = cr.query(Email.CONTENT_URI,new String[]{Email.DATA,Email.TYPE} , Email.CONTACT_ID+"="+id, null, null);
if (c3!=null) {
//c3.moveToFirst();
while(c3.moveToNext()){
int EmailType = c3.getInt(c3.getColumnIndex("Email.TYPE"));
if (EmailType==Email.TYPE_WORK) {//如果是工作邮箱
Log.i("xyz", "工作邮箱: "+c3.getString(c3.getColumnIndex("Email.DATA")));
}
}
c3.close();
}
}
c1.close();
}
}
}
