插入數據到內容提供商然後顯示它在列表視圖

Question

我仍然有強制關閉概率，當我運行模擬器。我做錯了什麼？

package fypj.ContactList; 

import android.app.Activity; 
import android.app.ListActivity; 
import android.content.ContentResolver; 
import android.content.ContentValues; 
import android.database.Cursor; 
import android.net.Uri; 
import android.os.Bundle; 
import android.provider.ContactsContract; 
import android.provider.Contacts.People; 
import android.provider.ContactsContract.CommonDataKinds.Phone; 
import android.provider.ContactsContract.Data; 
import android.widget.ArrayAdapter; 
import android.widget.ListAdapter; 
import android.widget.ListView; 
import android.widget.SimpleCursorAdapter; 
import android.widget.TextView; 

public class ContactList extends ListActivity { 
    TextView ContactsTV; 
    ListView ContactsLV; 
    Uri phoneUri = null; 
    Uri emailUri = null; 
    Uri uri; 
    ContentValues values = new ContentValues(); 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     ContactsTV = (TextView)findViewById(R.id.txt); 
     ContactsLV = (ListView)findViewById(R.id.list); 
     //populateContactList(); 
     insert(uri, values); 
     //retrieve contracts and bind them to list view 
     String [] projection = new String[] 
     {Phone.DISPLAY_NAME}; 
     ContactsTV.setText(ContactsContract.PhoneLookup.CONTENT_FILTER_URI.toString()); 
     int[] to = new int[]{R.id.txtName}; 

     Cursor managedCursor = managedQuery(phoneUri, projection, null, null, null); 
     ListAdapter sca = new SimpleCursorAdapter 
     (this, R.layout.listrow, managedCursor,projection, to); 
     ContactsLV.setAdapter(sca); 
    } 

    public final Uri insert(Uri uri, ContentValues values){ 
     values.put(Data.MIMETYPE, Phone.CONTENT_ITEM_TYPE); 
     values.put(Phone.DISPLAY_NAME, "Jaslyn"); 
     values.put(Phone.LABEL, "Jaslyn Goh"); 
     values.put(Phone.STARRED, 1); 
     uri = getContentResolver().insert(Data.CONTENT_URI, values); 


     phoneUri = Uri.withAppendedPath(uri, People.ContactMethods.CONTENT_DIRECTORY); 

     values.clear(); 
     values.put(Phone.TYPE, Phone.TYPE_MOBILE); 
     values.put(Phone.NUMBER, "91289161"); 
     return getContentResolver().insert(phoneUri, values); 
     //emailUri = Uri.withAppendedPath(uri, People.ContactMethods.CONTENT_DIRECTORY); 
     //values.clear(); 
     //values.put(People.ContactMethods.KIND, Contacts.KIND_EMAIL); 
     //values.put(People.ContactMethods.DATA, "asd@hotmail.com"); 
     //values.put(People.ContactMethods.TYPE, People.ContactMethods.TYPE_HOME); 
     //getContentResolver().insert(emailUri, values); 

    } 

Answer 1

package fypj.contacts; 

import fypj.e.R; 
import android.app.ListActivity; 
import android.content.ContentUris; 
import android.content.ContentValues; 
import android.database.Cursor; 
import android.net.Uri; 
import android.os.Bundle; 
import android.provider.Contacts.People; 
import android.provider.ContactsContract; 
import android.provider.ContactsContract.CommonDataKinds.Phone; 
import android.provider.ContactsContract.CommonDataKinds.StructuredName; 
import android.provider.ContactsContract.Data; 
import android.provider.ContactsContract.RawContacts; 
import android.widget.*; 

public class Contacts extends ListActivity { 
    private SimpleCursorAdapter myAdapter;  
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     String account_type = null; 
     String account_name = null; 

     ContentValues values = new ContentValues(); 
     values.put(RawContacts.ACCOUNT_TYPE, account_type); 
     values.put(RawContacts.ACCOUNT_NAME, account_name); 
     Uri rawContactUri = 
     getContentResolver().insert(RawContacts.CONTENT_URI, values); 
     long rawContactId = ContentUris.parseId(rawContactUri); 


     values.clear(); 
     values.put(Data.RAW_CONTACT_ID, rawContactId); 
     values.put(Data.MIMETYPE, StructuredName.CONTENT_ITEM_TYPE); 
     values.put(StructuredName.DISPLAY_NAME, "S.M"); 
     values.put(Phone.LABEL, "Sarah"); 
     values.put(Phone.NUMBER, "91111111"); 
     //values.put(ContactsContract.Data.DATA3, "View Contact"); 
     getContentResolver().insert(Data.CONTENT_URI, values); 


     //contentResolver = getContentResolver(); 



     //Cursor cursor = getContentResolver().query(People.CONTENT_URI, null, null, null, null);  
     Cursor cursor = getContentResolver().query(Data.CONTENT_URI, null, null, null, null);   
     startManagingCursor(cursor);   
     // String[] column = new String[] {Phone.LABEL}; 
     String[] column = new String[] {Phone.LABEL}; 
     int[] names = new int[] {R.id.contact_name};   
     myAdapter = new SimpleCursorAdapter(this, R.layout.main, cursor, column, names);   
     setListAdapter(myAdapter);  
    } 
}