备注：
ContentProvider1进程一代码：https://github.com/zengyuan/ContentProvider1Mode
ContentProvider1进程二代码：https://github.com/zengyuan/ContentProvider2Mode
注意，最主要是provider的配置，以及URl的provider地址要相同；
一，ContentProvider 主要用于不同的应用程序之间实现数据共享功能！
主要分为6个：
1.使用SQLite技术，创建好数据库和数据表；
2.新建类继承ContentProvider，重写6个抽象方法（通过这六个方法对数据库进行操作）；
3.在Manifest中注册provider；
4.创建UriMatcher，定义Uri规则，添加注册数据库链表的名称；
5.ContentResolver对ContentProvider中共享的数据进行增删改查操作；
6.获取数据并修改等（进程一进程二增删改查方式一样）；
二，进程一代码伺候：
第一步创建数据库（sql语句直接执行的）：
package com.saiyi.contentproviderdemo1;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
/**
* <pre>
* author : Finn
* e-mail : 892603597@qq.com
* time : 2019/10/14
* desc : https://www.cnblogs.com/finn21/
* </pre>
*/
public class DBHelper extends SQLiteOpenHelper {
// 数据库名
private static final String DATABASE_NAME = "Finn.db";
// 链表名称
public static final String USER_TABLE_NAME = "user";
public static final String JOB_TABLE_NAME = "job";
private static final int DATABASE_VERSION = 1;
//数据库版本号
public DBHelper(Context context) {
super(context,DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
// 创建两个表格:用户表 和职业表
db.execSQL("CREATE TABLE IF NOT EXISTS " + USER_TABLE_NAME + "(_id INTEGER PRIMARY KEY AUTOINCREMENT," + " name TEXT)");
db.execSQL("CREATE TABLE IF NOT EXISTS " + JOB_TABLE_NAME + "(_id INTEGER PRIMARY KEY AUTOINCREMENT," + " job TEXT)");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
@Override
public void onOpen(SQLiteDatabase db) {
super.onOpen(db);
}
@Override
public synchronized void close() {
super.close();
}
}
第一步创建数据库（通过自行封装之后的数据库）：
package com.saiyi.contentproviderdemo1;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
/**
* <pre>
* author : Finn
* e-mail : 892603597@qq.com
* time : 2019/10/14
* desc : https://www.cnblogs.com/finn21/
* </pre>
*/
public class MyDataBaseHelper extends SQLiteOpenHelper {
private static final String DATABASE_NAME = "KfbFinnSS.db";
private static final int DATABASE_VERSION = 1;
public static final String USER_ID = "userid_id";// 自动增长表id
/***.用户名（存储车型af）**/
public static final String TABLE_USER_AF = "table_user_af";
public static final String USER_USER_AF = "car_user_name_af";//用户名
public static final String USER_CAR_AZ_AF = "car_user_az_af";//字符分段
public static final String USER_CAR_NAME_AF = "car_kfb_name_af";// 车名称
public static final String USER_CAR_TYPE_AF = "car_user_cartype_af";// 车型号
public static final String USER_CAR_DATE_AF = "car_kfb_date_af";// 年份
public static final String USER_CAR_LENGM_AF = "car_kfb_lengmei_af";// 冷媒量
public MyDataBaseHelper(Context context) {
super(context,DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
/** AF * */
db.execSQL("CREATE TABLE " + TABLE_USER_AF + " (" + USER_ID + " INTEGER PRIMARY KEY," + USER_USER_AF + " INTEGER NOT NUll,"
+ USER_CAR_AZ_AF + " TEXT," + USER_CAR_NAME_AF + " TEXT," + USER_CAR_TYPE_AF
+ " TEXT," + USER_CAR_DATE_AF + " TEXT NOT NUll," + USER_CAR_LENGM_AF + " INTEGER default 0);");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
//数据库升级启动该方法
}
@Override
public synchronized void close() {
super.close();
}
@Override
public void onOpen(SQLiteDatabase db) {
super.onOpen(db);
}
}
package com.saiyi.contentproviderdemo1;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import java.util.ArrayList;
import java.util.List;
/**
* <pre>
* author : Finn
* e-mail : 892603597@qq.com
* time : 2019/10/14
* desc : https://www.cnblogs.com/finn21/
* </pre>
*/
public class MyDataBase {
private static final String TAG = MyDataBase.class.getSimpleName();
private static MyDataBaseHelper databaseHelper;
private static MyDataBase myDisplacementBase;
private static String USER_NAME = "13006602877";
private static String TABLE_USER_NAME = "KFB";
private MyDataBase(Context context) {
databaseHelper = new MyDataBaseHelper(context);
}
public static MyDataBase getInstance(Context context) {
if (myDisplacementBase == null) {
myDisplacementBase = new MyDataBase(context.getApplicationContext());
}
return myDisplacementBase;
}
/**
* 关闭当前的db
*
* @param db
*/
synchronized void closeSQLDB(SQLiteDatabase db) {
SQLiteDatabase.releaseMemory();
if (db != null && db.isOpen()) {
db.close();
db = null;
}
}
/**
* 通知本地数据库有变化
*/
public interface InotifyDBhasChange {
int CODE_ERR_REPET = 0;
void onChange(Object... obj);
void err(int... code);
}
/**
* --------------------------------------添加车名AF---------------------------------------
*/
public synchronized void InsertCarAF(CarInfo info) {
SQLiteDatabase writeDB = databaseHelper.getWritableDatabase();
Cursor cursor = writeDB.query(MyDataBaseHelper.TABLE_USER_AF,
new String[]{MyDataBaseHelper.USER_ID},
MyDataBaseHelper.USER_USER_AF + " = ? ",
new String[]{TABLE_USER_NAME}, null, null, null);
cursor.close();
ContentValues cv = new ContentValues();
cv.put(MyDataBaseHelper.USER_USER_AF, TABLE_USER_NAME);
cv.put(MyDataBaseHelper.USER_CAR_AZ_AF, info.getAz());
cv.put(MyDataBaseHelper.USER_CAR_NAME_AF, info.getCarName());
cv.put(MyDataBaseHelper.USER_CAR_TYPE_AF, info.getCarType());
cv.put(MyDataBaseHelper.USER_CAR_DATE_AF, info.getCarDate());
cv.put(MyDataBaseHelper.USER_CAR_LENGM_AF, info.getCarLengM());
try {
writeDB.insert(MyDataBaseHelper.TABLE_USER_AF, null, cv);//插入数据
} catch (Exception e) {
return;
} finally {
closeSQLDB(writeDB);
}
}
/**
* 查询所有用户
*/
public synchronized List<CarInfo> QueryListAF() {
List<CarInfo> list = new ArrayList<>();
SQLiteDatabase readDB = databaseHelper.getReadableDatabase();
Cursor cursor = readDB.query(MyDataBaseHelper.TABLE_USER_AF,
null, MyDataBaseHelper.USER_USER_AF + " = ? ",
new String[]{TABLE_USER_NAME}, null,
null, MyDataBaseHelper.USER_ID, null);
try {
// int user = cursor.getColumnIndex(MyDataBaseHelper.USER_USER_AF);
int pswd = cursor.getColumnIndex(MyDataBaseHelper.USER_CAR_AZ_AF);
int icon = cursor.getColumnIndex(MyDataBaseHelper.USER_CAR_NAME_AF);
int nickname = cursor.getColumnIndex(MyDataBaseHelper.USER_CAR_TYPE_AF);
int vertion = cursor.getColumnIndex(MyDataBaseHelper.USER_CAR_DATE_AF);
int veron = cursor.getColumnIndex(MyDataBaseHelper.USER_CAR_LENGM_AF);
while (cursor.moveToNext()) {
CarInfo info = new CarInfo(
cursor.getString(pswd),
cursor.getString(icon),
cursor.getString(nickname),
cursor.getString(vertion),
cursor.getString(veron)
);
list.add(info);
}
} catch (Exception e) {
} finally {
if (cursor != null) {
cursor.close();
}
closeSQLDB(readDB);
}
return list;
}
public Cursor cursor;
public SQLiteDatabase readDB;
public synchronized Cursor QueryCursor() {
readDB = databaseHelper.getReadableDatabase();
cursor = readDB.query(MyDataBaseHelper.TABLE_USER_AF,
null, MyDataBaseHelper.USER_USER_AF + " = ? ",
new String[]{TABLE_USER_NAME}, null,
null, MyDataBaseHelper.USER_ID, null);
return cursor;
}
public synchronized void CloseCursor() {
if (cursor != null) {
cursor.close();
}
closeSQLDB(readDB);
}
/**
* 查询所有用户
*/
public synchronized Cursor QueryListAFA() {
SQLiteDatabase readDB = databaseHelper.getReadableDatabase();
Cursor cursor = readDB.query(MyDataBaseHelper.TABLE_USER_AF,
null, MyDataBaseHelper.USER_USER_AF + " = ? ",
new String[]{TABLE_USER_NAME}, null,
null, MyDataBaseHelper.USER_ID, null);
try {
} catch (Exception e) {
} finally {
if (cursor != null) {
cursor.close();
}
closeSQLDB(readDB);
}
return cursor;
}
/**
* 查询AF特定名称的车类型
*/
public synchronized List<CarInfo> QueryListAFCarName(String Carname) {
List<CarInfo> list = new ArrayList<>();
SQLiteDatabase readDB = databaseHelper.getReadableDatabase();
Cursor cursor = readDB.query(MyDataBaseHelper.TABLE_USER_AF,
null, MyDataBaseHelper.USER_USER_AF + " = ? and " + MyDataBaseHelper.USER_CAR_NAME_AF + " = ? ",
new String[]{TABLE_USER_NAME, Carname}, null,
null, MyDataBaseHelper.USER_ID, null);
try {
// int user = cursor.getColumnIndex(MyDataBaseHelper.USER_USER_AF);
int pswd = cursor.getColumnIndex(MyDataBaseHelper.USER_CAR_AZ_AF);
int icon = cursor.getColumnIndex(MyDataBaseHelper.USER_CAR_NAME_AF);
int nickname = cursor.getColumnIndex(MyDataBaseHelper.USER_CAR_TYPE_AF);
int vertion = cursor.getColumnIndex(MyDataBaseHelper.USER_CAR_DATE_AF);
int veron = cursor.getColumnIndex(MyDataBaseHelper.USER_CAR_LENGM_AF);
while (cursor.moveToNext()) {
CarInfo info = new CarInfo(
cursor.getString(pswd),
cursor.getString(icon),
cursor.getString(nickname),
cursor.getString(vertion),
cursor.getString(veron)
);
list.add(info);
}
} catch (Exception e) {
} finally {
if (cursor != null) {
cursor.close();
}
closeSQLDB(readDB);
}
return list;
}
/**
* 查询AF特定名称和车类型 的生产年份
*/
public synchronized List<CarInfo> QueryListAFCarNameYeas(String Carname,String CarType) {
List<CarInfo> list = new ArrayList<>();
SQLiteDatabase readDB = databaseHelper.getReadableDatabase();
Cursor cursor = readDB.query(MyDataBaseHelper.TABLE_USER_AF,
null, MyDataBaseHelper.USER_USER_AF + " = ? and "
+ MyDataBaseHelper.USER_CAR_NAME_AF + " = ? and "
+ MyDataBaseHelper.USER_CAR_TYPE_AF + " = ? ",
new String[]{TABLE_USER_NAME, Carname,CarType}, null,
null, MyDataBaseHelper.USER_ID, null);
try {
// int user = cursor.getColumnIndex(MyDataBaseHelper.USER_USER_AF);
int pswd = cursor.getColumnIndex(MyDataBaseHelper.USER_CAR_AZ_AF);
int icon = cursor.getColumnIndex(MyDataBaseHelper.USER_CAR_NAME_AF);
int nickname = cursor.getColumnIndex(MyDataBaseHelper.USER_CAR_TYPE_AF);
int vertion = cursor.getColumnIndex(MyDataBaseHelper.USER_CAR_DATE_AF);
int veron = cursor.getColumnIndex(MyDataBaseHelper.USER_CAR_LENGM_AF);
while (cursor.moveToNext()) {
CarInfo info = new CarInfo(
cursor.getString(pswd),
cursor.getString(icon),
cursor.getString(nickname),
cursor.getString(vertion),
cursor.getString(veron)
);
list.add(info);
}
} catch (Exception e) {
} finally {
if (cursor != null) {
cursor.close();
}
closeSQLDB(readDB);
}
return list;
}
/**
* 删除列表数据
*/
public synchronized void DeletInfoAF(InotifyDBhasChange dbChange) {
SQLiteDatabase writeDB = databaseHelper.getWritableDatabase();
try {
writeDB.delete(
MyDataBaseHelper.TABLE_USER_AF,
MyDataBaseHelper.USER_USER_AF + " = ? "
, new String[]{TABLE_USER_NAME});
} catch (Exception e) {
dbChange.err();
return;
} finally {
closeSQLDB(writeDB);
}
dbChange.onChange();
}
}
第二步：2.新建类继承ContentProvider，重写6个抽象方法
package com.saiyi.contentproviderdemo1;
import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.Context;
import android.content.UriMatcher;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.net.Uri;
import android.util.Log;
/**
* <pre>
* author : Finn
* e-mail : 892603597@qq.com
* time : 2019/10/14
* desc : https://www.cnblogs.com/finn21/
* </pre>
*/
public class BaseContentProvider extends ContentProvider{
private Context mContext;
DBHelper mDbHelper = null;
SQLiteDatabase db = null;
public static final String AUTOHORITY = "Finn.zy.myprovider";
// 设置ContentProvider的唯一标识
public static final int User_Code = 1;
public static final int Job_Code = 2;
public static final int AF_Code = 32;
// UriMatcher类使用:在ContentProvider 中注册URI
private static final UriMatcher mMatcher;
public static DataBaseMonitor mListener = null;
public static void setDataBaseMonitorListener(DataBaseMonitor listener) {
mListener = listener;
}
static{
mMatcher = new UriMatcher(UriMatcher.NO_MATCH);
// 初始化
mMatcher.addURI(AUTOHORITY,DBHelper.USER_TABLE_NAME, User_Code); // 若URI资源路径 = "content://" + AUTOHORITY +"/user"
mMatcher.addURI(AUTOHORITY, DBHelper.JOB_TABLE_NAME, Job_Code);// 若URI资源路径 = "content://" + AUTOHORITY +"/job"
mMatcher.addURI(AUTOHORITY, MyDataBaseHelper.TABLE_USER_AF, AF_Code);// 若URI资源路径 = "content://" + AUTOHORITY +"/job"
// 固定前缀 "content://" + AUTOHORITY，数据库链表的名称，则返回注册码User_Code
//固定前缀 "content://" + AUTOHORITY ，数据库链表的名称，则返回注册码Job_Code
}
// 以下是ContentProvider的6个方法
@Override
public boolean onCreate() {
//该方法在ContentProvider创建后就会被调用，Android开机后，
// ContentProvider在其它应用第一次访问它时才会被创建，同时，要讲返回值修改成true。
mContext = getContext();
// 在ContentProvider创建时对数据库进行初始化
// 运行在主线程，故不能做耗时操作,此处仅作展示
mDbHelper = new DBHelper(getContext());
db = mDbHelper.getWritableDatabase();
// 初始化两个表的数据(先清空两个表,再各加入一个记录)
db.execSQL("delete from user");
db.execSQL("insert into user values(1,'Carson');");
db.execSQL("insert into user values(2,'Kobe');");
MyDataBase.getInstance(mContext).InsertCarAF(new CarInfo("宝马","奔驰","路虎","宾利","保时捷"));
MyDataBase.getInstance(mContext).InsertCarAF(new CarInfo("宝马1","奔驰2","路虎3","宾利4","保时捷5"));
return true;
}
public static final int ITEMS = 1;
public static final int ITEMS_ID = 2;
// 如果操作的数据属于集合类型，那么MIME类型字符串应该以vnd.android.cursor.dir/开头。
// 例如：要得到所有person记录的Uri为content://com.cfox.contentprovid.PersonProvider/person
// 那么返回的MIME类型字符串应该为："vnd.android.cursor.dir/person"
// 如果要操作的数据属于非集合类型数据，那么MIME类型字符串应该以vnd.android.cursor.item/开头
// 例如：得到id为10的person记录，Uri为content://com.cfox.contentprovid.PersonProvider/person/10
// 那么返回的MIME类型字符串为："vnd.android.cursor.item/person"
@Override
public String getType(Uri uri) {
return null;
}
@Override
public Uri insert(Uri uri, ContentValues values) {
//该方法用于供外部应用往ContentProvider添加数据。
// 根据URI匹配 URI_CODE，从而匹配ContentProvider中相应的表名
// 该方法在最下面
String table = getTableName(uri);
Log.e("sdfsdf",table+"====="+MyDataBaseHelper.TABLE_USER_AF);
if(table != null && !MyDataBaseHelper.TABLE_USER_AF.equals(table)){
// 向该表添加数据
db.insert(table, null, values);
// 当该URI的ContentProvider数据发生变化时，通知外界（即访问该ContentProvider数据的访问者）
mContext.getContentResolver().notifyChange(uri, null);
return uri;
}else{
FinnInsert(uri,values);
return uri;
}
// // 通过ContentUris类从URL中获取ID
// long personid = ContentUris.parseId(uri);
// System.out.println(personid);
}
@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
//该方法用于供外部应用从ContentProvider删除数据。
String tableName = getTableName(uri);
if(!MyDataBaseHelper.TABLE_USER_AF.equals(tableName)){
//使用原生函数的数据库
return 0;
}else{
//使用封装之后的数据库
return 0;
}
}
@Override
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
return 0;
}
/**
* 查询数据
*/
@Override
public Cursor query(Uri uri, String[] projection, String selection,
String[] selectionArgs, String sortOrder) {
//该方法用于供外部应用从ContentProvider中获取数据。
// 根据URI匹配 URI_CODE，从而匹配ContentProvider中相应的表名
// 该方法在最下面
String tableName = getTableName(uri);
FinnQuery(tableName);
// // 通过ContentUris类从URL中获取ID
// long personid = ContentUris.parseId(uri);
// System.out.println(personid);
// 查询数据+
if(!MyDataBaseHelper.TABLE_USER_AF.equals(tableName)){
//使用原生函数的数据库
return db.query(tableName,projection,selection,selectionArgs,null,null,sortOrder,null);
}else{
//使用封装之后的数据库
return MyDataBase.getInstance(mContext).QueryCursor();
}
}
/**
* 根据URI匹配 URI_CODE，从而匹配ContentProvider中相应的表名
*/
public static final String getTableName(Uri uri){
String tableName = null;
switch (mMatcher.match(uri)) {
case User_Code:
tableName = DBHelper.USER_TABLE_NAME;
break;
case Job_Code:
tableName = DBHelper.JOB_TABLE_NAME;
break;
case AF_Code:
tableName = MyDataBaseHelper.TABLE_USER_AF;
break;
}
return tableName;
}
public void FinnInsert(Uri uri, ContentValues values) {
//自行封装方法添加数据库
String table = getTableName(uri);
switch (table){//根据表名 插入数据
case MyDataBaseHelper.TABLE_USER_AF://通过KEY获取value
MyDataBase.getInstance(mContext).InsertCarAF(new CarInfo(
values.get("car_user_az_af").toString(), values.get("car_kfb_name_af").toString(),
values.get("car_user_cartype_af").toString(), values.get("car_kfb_date_af").toString(),
values.get("car_kfb_lengmei_af").toString()
));
// MyDataBase.getInstance(mContext).InsertCarAF(new CarInfo(
// values.get(MyDataBaseHelper.USER_CAR_AZ_AF).toString(), values.get(MyDataBaseHelper.USER_CAR_NAME_AF).toString(),
// values.get(MyDataBaseHelper.USER_CAR_TYPE_AF).toString(), values.get(MyDataBaseHelper.USER_CAR_DATE_AF).toString(),
// values.get(MyDataBaseHelper.USER_CAR_LENGM_AF).toString()
// ));
break;
default:
break;
}
}
public void FinnQuery(String tablename) {
//自行封装方法添加数据库
switch (tablename){//根据表名 插入数据
case MyDataBaseHelper.TABLE_USER_AF:
mListener.OnRelist(MyDataBase.getInstance(mContext).QueryListAF());
break;
default:
break;
}
}
}
第三步：在Manifest中注册provider；
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.saiyi.contentproviderdemo1">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme"
tools:ignore="GoogleAppIndexingWarning">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!--authorities地址和 BaseContentProvider中的AUTOHORITY要保持一致-->
<provider android:name=".BaseContentProvider"
android:authorities="Finn.zy.myprovider"
android:enabled="true"
android:exported="true"
/>
</application>
</manifest>
package com.saiyi.contentproviderdemo1;import android.content.ContentProvider;import android.content.ContentValues;import android.content.Context;import android.content.UriMatcher;import android.database.Cursor;import android.database.sqlite.SQLiteDatabase;import android.net.Uri;import android.util.Log;/** * <pre>* author : Finn * e-mail : 892603597@qq.com * time : 2019/10/14 * desc : https://www.cnblogs.com/finn21/ * </pre>*/public class BaseContentProvider extends ContentProvider{ private Context mContext;DBHelper mDbHelper = null;SQLiteDatabase db = null; public static final String AUTOHORITY = "Finn.zy.myprovider";// 设置ContentProvider的唯一标识public static final int User_Code = 1; public static final int Job_Code = 2; public static final int AF_Code = 32;// UriMatcher类使用:在ContentProvider 中注册URIprivate static final UriMatcher mMatcher; public static DataBaseMonitor mListener = null; public static void setDataBaseMonitorListener(DataBaseMonitor listener) { mListener = listener;} static{ mMatcher = new UriMatcher(UriMatcher.NO_MATCH);// 初始化mMatcher.addURI(AUTOHORITY,DBHelper.USER_TABLE_NAME, User_Code); // 若URI资源路径 = "content://" + AUTOHORITY +"/user"mMatcher.addURI(AUTOHORITY, DBHelper.JOB_TABLE_NAME, Job_Code);// 若URI资源路径 = "content://" + AUTOHORITY +"/job"mMatcher.addURI(AUTOHORITY, MyDataBaseHelper.TABLE_USER_AF, AF_Code);// 若URI资源路径 = "content://" + AUTOHORITY +"/job" // 固定前缀 "content://" + AUTOHORITY，数据库链表的名称，则返回注册码User_Code //固定前缀 "content://" + AUTOHORITY ，数据库链表的名称，则返回注册码Job_Code} // 以下是ContentProvider的6个方法@Overridepublic boolean onCreate() { //该方法在ContentProvider创建后就会被调用，Android开机后，// ContentProvider在其它应用第一次访问它时才会被创建，同时，要讲返回值修改成true。mContext = getContext();// 在ContentProvider创建时对数据库进行初始化// 运行在主线程，故不能做耗时操作,此处仅作展示mDbHelper = new DBHelper(getContext());db = mDbHelper.getWritableDatabase();// 初始化两个表的数据(先清空两个表,再各加入一个记录)db.execSQL("delete from user");db.execSQL("insert into user values(1,'Carson');");db.execSQL("insert into user values(2,'Kobe');");MyDataBase.getInstance(mContext).InsertCarAF(new CarInfo("宝马","奔驰","路虎","宾利","保时捷"));MyDataBase.getInstance(mContext).InsertCarAF(new CarInfo("宝马1","奔驰2","路虎3","宾利4","保时捷5")); return true;} public static final int ITEMS = 1; public static final int ITEMS_ID = 2;// 如果操作的数据属于集合类型，那么MIME类型字符串应该以vnd.android.cursor.dir/开头。// 例如：要得到所有person记录的Uri为content://com.cfox.contentprovid.PersonProvider/person// 那么返回的MIME类型字符串应该为："vnd.android.cursor.dir/person" // 如果要操作的数据属于非集合类型数据，那么MIME类型字符串应该以vnd.android.cursor.item/开头// 例如：得到id为10的person记录，Uri为content://com.cfox.contentprovid.PersonProvider/person/10// 那么返回的MIME类型字符串为："vnd.android.cursor.item/person"@Overridepublic String getType(Uri uri) { return null;} @Overridepublic Uri insert(Uri uri, ContentValues values) { //该方法用于供外部应用往ContentProvider添加数据。// 根据URI匹配 URI_CODE，从而匹配ContentProvider中相应的表名// 该方法在最下面String table = getTableName(uri);Log.e("sdfsdf",table+"====="+MyDataBaseHelper.TABLE_USER_AF); if(table != null && !MyDataBaseHelper.TABLE_USER_AF.equals(table)){ // 向该表添加数据db.insert(table, null, values);// 当该URI的ContentProvider数据发生变化时，通知外界（即访问该ContentProvider数据的访问者）mContext.getContentResolver().notifyChange(uri, null); return uri;}else{ FinnInsert(uri,values); return uri;}// // 通过ContentUris类从URL中获取ID// long personid = ContentUris.parseId(uri);// System.out.println(personid);} @Overridepublic int delete(Uri uri, String selection, String[] selectionArgs) { //该方法用于供外部应用从ContentProvider删除数据。String tableName = getTableName(uri); if(!MyDataBaseHelper.TABLE_USER_AF.equals(tableName)){ //使用原生函数的数据库return 0;}else{ //使用封装之后的数据库return 0;} } @Overridepublic int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) { return 0;} /** * 查询数据*/@Overridepublic Cursor query(Uri uri, String[] projection, String selection,String[] selectionArgs, String sortOrder) { //该方法用于供外部应用从ContentProvider中获取数据。// 根据URI匹配 URI_CODE，从而匹配ContentProvider中相应的表名// 该方法在最下面String tableName = getTableName(uri);FinnQuery(tableName);// // 通过ContentUris类从URL中获取ID// long personid = ContentUris.parseId(uri);// System.out.println(personid); // 查询数据+if(!MyDataBaseHelper.TABLE_USER_AF.equals(tableName)){ //使用原生函数的数据库return db.query(tableName,projection,selection,selectionArgs,null,null,sortOrder,null);}else{ //使用封装之后的数据库return MyDataBase.getInstance(mContext).QueryCursor();} } /** * 根据URI匹配 URI_CODE，从而匹配ContentProvider中相应的表名*/public static final String getTableName(Uri uri){ String tableName = null; switch (mMatcher.match(uri)) { case User_Code: tableName = DBHelper.USER_TABLE_NAME; break; case Job_Code: tableName = DBHelper.JOB_TABLE_NAME; break; case AF_Code: tableName = MyDataBaseHelper.TABLE_USER_AF; break;} return tableName;} public void FinnInsert(Uri uri, ContentValues values) { //自行封装方法添加数据库String table = getTableName(uri); switch (table){//根据表名 插入数据case MyDataBaseHelper.TABLE_USER_AF://通过KEY获取valueMyDataBase.getInstance(mContext).InsertCarAF(new CarInfo( values.get("car_user_az_af").toString(), values.get("car_kfb_name_af").toString(),values.get("car_user_cartype_af").toString(), values.get("car_kfb_date_af").toString(),values.get("car_kfb_lengmei_af").toString() ));// MyDataBase.getInstance(mContext).InsertCarAF(new CarInfo(// values.get(MyDataBaseHelper.USER_CAR_AZ_AF).toString(), values.get(MyDataBaseHelper.USER_CAR_NAME_AF).toString(),// values.get(MyDataBaseHelper.USER_CAR_TYPE_AF).toString(), values.get(MyDataBaseHelper.USER_CAR_DATE_AF).toString(),// values.get(MyDataBaseHelper.USER_CAR_LENGM_AF).toString()// ));break; default: break;} } public void FinnQuery(String tablename) { //自行封装方法添加数据库switch (tablename){//根据表名 插入数据case MyDataBaseHelper.TABLE_USER_AF: mListener.OnRelist(MyDataBase.getInstance(mContext).QueryListAF()); break; default: break;} }}