Android:使用ContentProvider读取、添加联系人
1 package com.example.contentproviderdome1; 2 3 import android.os.Bundle; 4 import android.provider.ContactsContract; 5 import android.provider.ContactsContract.CommonDataKinds.Email; 6 import android.provider.ContactsContract.CommonDataKinds.Phone; 7 import android.provider.ContactsContract.Contacts; 8 import android.app.Activity; 9 import android.content.ContentResolver; 10 import android.database.Cursor; 11 import android.util.Log; 12 import android.view.Menu; 13 14 public class MainActivity extends Activity { 15 16 @Override 17 protected void onCreate(Bundle savedInstanceState) { 18 super.onCreate(savedInstanceState); 19 setContentView(R.layout.activity_main); 20 ContentResolver cr = this.getContentResolver(); 21 Cursor c = cr.query(Contacts.CONTENT_URI, new String[]{Contacts._ID,Contacts.DISPLAY_NAME}, null, null, null); 22 if(c!=null){ 23 while(c.moveToNext()) { 24 int id = c.getInt(c.getColumnIndex("_id")); 25 Log.i("info","id:"+id); 26 Log.i("info", "name:"+c.getString(c.getColumnIndex(Contacts.DISPLAY_NAME))); 27 Cursor c1 = cr.query(Phone.CONTENT_URI, new String[]{Phone.NUMBER,Phone.TYPE}, Phone.CONTACT_ID+"="+id, null, null); 28 if(c1!=null) { 29 while(c1.moveToNext()){ 30 int type = c1.getInt(c1.getColumnIndex(Phone.TYPE)); 31 if(type == Phone.TYPE_HOME){ 32 Log.i("info","家庭电话："+c1.getString(c1.getColumnIndex(Phone.NUMBER))); 33 }else if(type == Phone.TYPE_MOBILE){ 34 Log.i("info","移动电话："+c1.getString(c1.getColumnIndex(Phone.NUMBER))); 35 } 36 } 37 c1.close(); 38 } 39 Cursor c2 = cr.query(Email.CONTENT_URI, new String[]{Email.ADDRESS}, Email.CONTACT_ID+"="+id, null, null); 40 if(c2!=null){ 41 while(c2.moveToNext()){ 42 Log.i("info", "个人邮箱:"+c2.getString(c2.getColumnIndex(Email.ADDRESS))); 43 } 44 c2.close(); 45 } 46 } 47 c.close(); 48 } 49 } 50 }
上面的是读取。读取电子邮件也可用Email.DATA代替Email.ADDRESS，添加TPYE实现分类。
最后不要忘了在Manifest文件中添加权限！
下面的是插入。
1 package com.example.contentproviderdome2; 2 3 import android.app.Activity; 4 import android.content.ContentResolver; 5 import android.content.ContentUris; 6 import android.content.ContentValues; 7 import android.net.Uri; 8 import android.os.Bundle; 9 import android.provider.ContactsContract.CommonDataKinds.Phone; 10 import android.provider.ContactsContract.CommonDataKinds.StructuredName; 11 import android.provider.ContactsContract.RawContacts; 12 import android.provider.ContactsContract.Data; 13 import android.util.Log; 14 15 public class MainActivity extends Activity { 16 17 @Override 18 protected void onCreate(Bundle savedInstanceState) { 19 super.onCreate(savedInstanceState); 20 setContentView(R.layout.activity_main); 21 ContentResolver cr = getContentResolver(); 22 ContentValues values = new ContentValues(); 23 //插入一条数据 24 Uri uri = cr.insert(RawContacts.CONTENT_URI, values); 25 Long raw_contact_id = ContentUris.parseId(uri); 26 values.clear(); 27 //插入人名 28 values.put(StructuredName.CONTACT_ID, raw_contact_id); 29 values.put(StructuredName.DISPLAY_NAME, "abc"); 30 Log.i("info",""+raw_contact_id); 31 values.put(StructuredName.MIMETYPE, StructuredName.CONTENT_ITEM_TYPE); 32 Log.i("info",""+raw_contact_id); 33 uri = cr.insert(Data.CONTENT_URI, values); 34 Log.i("info",""+raw_contact_id); 35 values.clear(); 36 //插入电话 37 values.put(Phone.CONTACT_ID, raw_contact_id); 38 values.put(Phone.NUMBER, "1388888888"); 39 values.put(Phone.MIMETYPE, Phone.CONTENT_ITEM_TYPE); 40 uri = cr.insert(Data.CONTENT_URI, values); 41 values.clear(); 42 } 43 }
程序崩溃。前两个Log可以打印，但是第三个不行。错误日志显示空指针。一共有5个Data类，只有1个有CONTENT_URI，跟教程中的源码对照没发现区别，权限也加了，不知道为什么。
