用ContentProvider查询通讯录和运用事务在ContentProvider操作上

来源：互联网发布：linux scp 传输文件夹编辑：程序博客网时间：2024/06/06 16:27
import java.util.ArrayList;import java.util.Collections;import android.content.ContentProviderOperation;import android.content.ContentResolver;import android.content.OperationApplicationException;import android.database.Cursor;import android.net.Uri;import android.os.RemoteException;import android.test.AndroidTestCase;/** * raw_contacts * data * mimetype * 三张表关联的 *  * 由于在查询和插入的时候data和mimetype是自动关联的 *  * data表中的mumetype_id和mimetype表中的_id是关联的 * 所以插入和查询的时候不用管mimetype表的设值 *  * 查询data表中的mimetype_id列的时候,显示的数据就是mimetype表中对应id的mimetype属性 * 插入data表中数据的时候,mimetupe_id列写mimetype属性就会自定将mimetype_id转换成相应的列 */public class TestContactRead extends AndroidTestCase {private Uri dataUri = Uri.parse("content://com.android.contacts/data");private Uri rawContactsUri = Uri.parse("content://com.android.contacts/raw_contacts");/** * 查询通讯录的姓名,电话,邮箱  */public void testContactRead(){ContentResolver resolver = getContext().getContentResolver();Cursor rawContactsCursor = resolver.query(dataUri, new String[]{"_id"}, null, null, null);while(rawContactsCursor.moveToNext()){String id = rawContactsCursor.getString(0);Cursor dataCursor = resolver.query(dataUri, new String[]{"data1","mimetype"}, "raw_contact_id=?", new String[]{id+""}, null);while(dataCursor.moveToNext()){String data1 = dataCursor.getString(dataCursor.getColumnIndex("data1"));String mimetype = dataCursor.getString(dataCursor.getColumnIndex("mimetype"));if("vnd.android.cursor.item/name".equals(mimetype)){System.out.println("姓名："+data1);}else if("vnd.android.cursor.item/phone_v2".equals(mimetype)){System.out.println("电话："+data1);}else if("vnd.android.cursor.item/email_v2".equals(mimetype)){System.out.println("邮箱："+data1);}}}}/** * 用内容提供者进行一个事务操作(添加通讯录记录操作) */public void testContactWrite() throws RemoteException, OperationApplicationException{//内容提供者的一个添加操作ContentProviderOperation operation1 = ContentProviderOperation.newInsert(rawContactsUri).withValue("_id", null)//设置要添加的数据(参数一:列名,参数二:值).build();ContentProviderOperation operation2 = ContentProviderOperation.newInsert(dataUri).withValueBackReference("raw_contact_id", 0)//用同组的第一个操作的返回值最为raw_contact_id的value插入.withValue("mimetype", "vnd.android.cursor.item/name").withValue("data1", "xxc").build();ContentProviderOperation operation3 = ContentProviderOperation.newInsert(dataUri).withValueBackReference("raw_contact_id", 0).withValue("mimetype", "vnd.android.cursor.item/phone_v2").withValue("data1", "150987654321").build();ContentProviderOperation operation4 = ContentProviderOperation.newInsert(dataUri).withValueBackReference("raw_contact_id", 0).withValue("mimetype", "vnd.android.cursor.item/email_v2").withValue("data1", "xxc@qq.com").build();//存放内容提供者的操作的集合ArrayList<ContentProviderOperation> operations = new ArrayList<ContentProviderOperation>();//将操作添加到集合里,第一个参数是集合,第二个参数是可变参数(内容提供者的操作)Collections.addAll(operations, operation1,operation2,operation3,operation4);//执行集合里的所有操作getContext().getContentResolver().applyBatch("com.android.contacts", operations);}}
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