安卓 : Content Provider : Uri Type Wrong on Jellybean 4. 2.2

转载作者：行者123 更新时间：2023-11-29 20:06:57

我在 Jellybean 4.2.2 上获取正确的 uriType 时遇到问题。下面给出的代码在其他版本上工作正常。

package com.karacraft.security;

import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.UriMatcher;
import android.database.Cursor;   
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteQueryBuilder;
import android.net.Uri;
import android.support.annotation.Nullable;
import android.text.TextUtils;
import android.util.Log;

import com.karacraft.data.ItemsContract;
import com.karacraft.data.MasterSahabDatabaseHelper;
import com.karacraft.data.MerchandisesContract;
import com.karacraft.data.OrdersContract;
import com.karacraft.data.StaffContract;
import com.karacraft.data.StatsContract;
import com.karacraft.data.SuitsContract;
import com.karacraft.data.TailorsContract;
import com.karacraft.utils.Constants;


public class MasterSahabProvider extends ContentProvider
{
public static final String AUTHORITY ="com.karacraft.security.mastersahab";
public static final String KEY_URI = "/#";

//database
private MasterSahabDatabaseHelper database;

//Table Names
private static final String ITEMS_TABLE         = "/" + ItemsContract.TABLE_ITEMS;
private static final String MERCHANDISES_TABLE  = "/" + MerchandisesContract.TABLE_MERCHANDISES;
private static final String ORDERS_TABLE        = "/" + OrdersContract.TABLE_ORDERS;
private static final String SUITS_TABLE         = "/" + SuitsContract.TABLE_SUITS;
private static final String TAILORS_TABLE       = "/" + TailorsContract.TABLE_TAILORS;
private static final String STAFF_TABLE         = "/" + StaffContract.TABLE_STAFF;
private static final String STATS_TABLE         = "/" + StatsContract.TABLE_STATS;

//Uri for Multiple Tables
public static final Uri CONTENT_URI_ITEMS           = Uri.parse("content://" + AUTHORITY + ITEMS_TABLE);
public static final Uri CONTENT_URI_MERCHANDISES    = Uri.parse("content://" + AUTHORITY + MERCHANDISES_TABLE);
public static final Uri CONTENT_URI_ORDERS          = Uri.parse("content://" + AUTHORITY + ORDERS_TABLE);
public static final Uri CONTENT_URI_SUITS           = Uri.parse("content://" + AUTHORITY + SUITS_TABLE);
public static final Uri CONTENT_URI_TAILORS         = Uri.parse("content://" + AUTHORITY + TAILORS_TABLE);
public static final Uri CONTENT_URI_STAFF           = Uri.parse("content://" + AUTHORITY + STAFF_TABLE);
public static final Uri CONTENT_URI_STATS           = Uri.parse("content://" + AUTHORITY + STATS_TABLE);

public static final Uri CONTENT_URI_ORDERS_BY_MERC  = Uri.parse("content://" + AUTHORITY + ORDERS_TABLE);

//Return value setup for Uri Matchers
private static final int ITEMS          = 10;
private static final int ITEM_ID        = 20;
private static final int MERCHANDISES   = 30;
private static final int MERCHANDISE_ID = 40;
private static final int ORDERS         = 50;
private static final int ORDERS_ID      = 60;
private static final int SUITS          = 70;
private static final int SUITS_ID       = 80;
private static final int TAILORS        = 90;
private static final int TAILORS_ID     = 100;
private static final int STAFF          = 110;
private static final int STAFF_ID       = 120;
private static final int STATS          = 130;
private static final int STATS_ID       = 140;

private static final int ORDERS_BY_MERC = 200;

//Custom Method
private static final UriMatcher uriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
static {
    uriMatcher.addURI(AUTHORITY, ITEMS_TABLE,ITEMS);
    uriMatcher.addURI(AUTHORITY, ITEMS_TABLE + KEY_URI,ITEM_ID);
    uriMatcher.addURI(AUTHORITY, MERCHANDISES_TABLE,MERCHANDISES);
    uriMatcher.addURI(AUTHORITY, MERCHANDISES_TABLE + KEY_URI,MERCHANDISE_ID);
    uriMatcher.addURI(AUTHORITY, ORDERS_TABLE,ORDERS);
    uriMatcher.addURI(AUTHORITY, ORDERS_TABLE + KEY_URI,ORDERS_ID);
    uriMatcher.addURI(AUTHORITY, SUITS_TABLE,SUITS);
    uriMatcher.addURI(AUTHORITY, SUITS_TABLE + KEY_URI,SUITS_ID);
    uriMatcher.addURI(AUTHORITY, TAILORS_TABLE,TAILORS);
    uriMatcher.addURI(AUTHORITY, TAILORS_TABLE + KEY_URI,TAILORS_ID);
    uriMatcher.addURI(AUTHORITY, STAFF_TABLE , STAFF);
    uriMatcher.addURI(AUTHORITY, STAFF_TABLE + KEY_URI, STAFF_ID);
    uriMatcher.addURI(AUTHORITY, STATS_TABLE , STATS);
    uriMatcher.addURI(AUTHORITY, STATS_TABLE + KEY_URI, STATS_ID);

    uriMatcher.addURI(AUTHORITY,ORDERS_TABLE ,ORDERS);
}

public boolean onCreate()
{
    //Create Database
    database = new MasterSahabDatabaseHelper(getContext());
    return false;
}

/**
URI         uri         The URI of the object(s) to access. This is the only argument that must not be null
String[]    projection  This String array indicates which columns/attributes of the objects you want to access
String      selection   With this argument you can determine which records to return
String[]    selectionArgs   The binding parameters to the previous selection argument
String      sortOrder   If the result should be ordered you must use this argument to determine the sort order
*/
@Nullable
@Override
public Cursor query(Uri uri
        , String[] projection
        , String selection
        , String[] selectionArgs
        , String sortOrder)
{
    //Using SQLiteQueryBuilder instead of query() method
    SQLiteQueryBuilder builder = new SQLiteQueryBuilder();
    SQLiteDatabase db = database.getWritableDatabase();
    Cursor cursor=null;

    int uriType = uriMatcher.match(uri);
    Log.d(Constants.APP_TAG,"URIType is : " + uriType);
    Log.d(Constants.APP_TAG,"URI is : " + uri.toString());

    switch (uriType){
        case ITEMS:
            //Set the table
            builder.setTables(ItemsContract.TABLE_ITEMS);
            //adding the ID to original Query
            cursor = builder.query(db,projection,selection,selectionArgs,null,null,sortOrder);
            // make sure that potential listeners are getting notified
            cursor.setNotificationUri(getContext().getContentResolver(),uri);
            break;
        case ITEM_ID:
            //Set the table
            builder.setTables(ItemsContract.TABLE_ITEMS);
            //adding the ID to original Query
            builder.appendWhere(ItemsContract.ITEM_ID + "=" + uri.getLastPathSegment());
            cursor = builder.query(db,projection,selection,selectionArgs,null,null,sortOrder);
            // make sure that potential listeners are getting notified
            cursor.setNotificationUri(getContext().getContentResolver(), uri);
            break;
        case MERCHANDISES:
            //Set the table
            builder.setTables(MerchandisesContract.TABLE_MERCHANDISES);
            //adding the ID to original Query
            cursor = builder.query(db,projection,selection,selectionArgs,null,null,sortOrder);
            // make sure that potential listeners are getting notified
            cursor.setNotificationUri(getContext().getContentResolver(),uri);
            break;
        case MERCHANDISE_ID:
            //Set the table
            builder.setTables(MerchandisesContract.TABLE_MERCHANDISES);
            //adding the ID to original Query
            builder.appendWhere(MerchandisesContract.MERCHANDISE_ID + "=" + uri.getLastPathSegment());
            cursor = builder.query(db,projection,selection,selectionArgs,null,null,sortOrder);
            // make sure that potential listeners are getting notified
            cursor.setNotificationUri(getContext().getContentResolver(),uri);
            break;
        case ORDERS:
            //Set the table
            builder.setTables(OrdersContract.TABLE_ORDERS);
            //adding the ID to original Query
            cursor = builder.query(db,projection,selection,selectionArgs,null,null,sortOrder);
            // make sure that potential listeners are getting notified
            cursor.setNotificationUri(getContext().getContentResolver(),uri);
            break;
        case ORDERS_ID:
            //Set the table
            builder.setTables(OrdersContract.TABLE_ORDERS);
            //adding the ID to original Query
            builder.appendWhere(OrdersContract.ORDER_ID + "=" + uri.getLastPathSegment());
            cursor = builder.query(db,projection,selection,selectionArgs,null,null,sortOrder);
            // make sure that potential listeners are getting notified
            cursor.setNotificationUri(getContext().getContentResolver(),uri);
            break;
        case TAILORS:
            //Set the table
            builder.setTables(TailorsContract.TABLE_TAILORS);
            //adding the ID to original Query
            cursor = builder.query(db,projection,selection,selectionArgs,null,null,sortOrder);
            // make sure that potential listeners are getting notified
            cursor.setNotificationUri(getContext().getContentResolver(),uri);
            break;
        case TAILORS_ID:
            //Set the table
            builder.setTables(TailorsContract.TABLE_TAILORS);
            //adding the ID to original Query
            builder.appendWhere(TailorsContract.TAILOR_ID + "=" + uri.getLastPathSegment());
            cursor = builder.query(db,projection,selection,selectionArgs,null,null,sortOrder);
            // make sure that potential listeners are getting notified
            cursor.setNotificationUri(getContext().getContentResolver(),uri);
            break;
        case SUITS:
            //Set the table
            builder.setTables(SuitsContract.TABLE_SUITS);
            //adding the ID to original Query
            cursor = builder.query(db,projection,selection,selectionArgs,null,null,sortOrder);
            // make sure that potential listeners are getting notified
            cursor.setNotificationUri(getContext().getContentResolver(),uri);
            break;
        case SUITS_ID:
            //Set the table
            builder.setTables(SuitsContract.TABLE_SUITS);
            //adding the ID to original Query
            builder.appendWhere(SuitsContract.SUITS_ID + "=" + uri.getLastPathSegment());
            cursor = builder.query(db,projection,selection,selectionArgs,null,null,sortOrder);
            // make sure that potential listeners are getting notified
            cursor.setNotificationUri(getContext().getContentResolver(),uri);
            break;
        case STAFF:
            //Set the table
            builder.setTables(StaffContract.TABLE_STAFF);
            //adding the ID to original Query
            cursor = builder.query(db,projection,selection,selectionArgs,null,null,sortOrder);
            // make sure that potential listeners are getting notified
            cursor.setNotificationUri(getContext().getContentResolver(),uri);
            break;
        case STAFF_ID:
            //Set the table
            builder.setTables(StaffContract.TABLE_STAFF);
            //adding the ID to original Query
            builder.appendWhere(StaffContract.STAFF_ID + "=" + uri.getLastPathSegment());
            cursor = builder.query(db,projection,selection,selectionArgs,null,null,sortOrder);
            // make sure that potential listeners are getting notified
            cursor.setNotificationUri(getContext().getContentResolver(),uri);
            break;
        case STATS:
            //Set the table
            builder.setTables(StatsContract.TABLE_STATS);
            //adding the ID to original Query
            cursor = builder.query(db,projection,selection,selectionArgs,null,null,sortOrder);
            // make sure that potential listeners are getting notified
            cursor.setNotificationUri(getContext().getContentResolver(),uri);
            break;
        case STATS_ID:
            //Set the table
            builder.setTables(StatsContract.TABLE_STATS);
            //adding the ID to original Query
            builder.appendWhere(StatsContract.STATS_ID + "=" + uri.getLastPathSegment());
            cursor = builder.query(db,projection,selection,selectionArgs,null,null,sortOrder);
            // make sure that potential listeners are getting notified
            cursor.setNotificationUri(getContext().getContentResolver(),uri);
            break;
        case ORDERS_BY_MERC:
            //Set the table
            //builder.setTables("orders LEFT OUTER JOIN staff ON (orders.staff_id = staff._id)");
            builder.setTables("orders LEFT OUTER JOIN staff ON orders.staff_id = staff._id");
            //builder.setTables("orders,staff");
            //adding the ID to original Query
            cursor = builder.query(db,projection,selection,selectionArgs,null,null,sortOrder);
            // make sure that potential listeners are getting notified
            cursor.setNotificationUri(getContext().getContentResolver(),uri);
        default:
            throw new IllegalArgumentException("Unknown URI: " + uri);
    }
    return cursor;
}

@Nullable
@Override
public String getType(Uri uri)
{
    return null;
}

@Nullable
@Override
public Uri insert(Uri uri
        , ContentValues values)
{
    int uriType = uriMatcher.match(uri);
    SQLiteDatabase db = database.getWritableDatabase();
    Log.d(Constants.APP_TAG,"URIType is : " + uriType);
    Log.d(Constants.APP_TAG,"URI is : " + uri.toString());

    long id = 0;
    switch (uriType){
        case ITEMS:
            id = db.insert(ItemsContract.TABLE_ITEMS, null, values);
            getContext().getContentResolver().notifyChange(uri,null);
            return Uri.parse(ITEMS_TABLE + "/" + id);

        case MERCHANDISES:
            id = db.insert(MerchandisesContract.TABLE_MERCHANDISES,null,values);
            getContext().getContentResolver().notifyChange(uri,null);
            return Uri.parse(MERCHANDISES_TABLE + "/" + id);

        case ORDERS:
            id = db.insert(OrdersContract.TABLE_ORDERS,null,values);
            getContext().getContentResolver().notifyChange(uri,null);
            return Uri.parse(ORDERS_TABLE + "/" + id);

        case SUITS:
            id = db.insert(SuitsContract.TABLE_SUITS,null,values);
            getContext().getContentResolver().notifyChange(uri,null);
            return Uri.parse(SUITS_TABLE + "/" + id);

        case STAFF:
            id = db.insert(StaffContract.TABLE_STAFF,null, values);
            getContext().getContentResolver().notifyChange(uri,null);
            return Uri.parse(STAFF_TABLE + "/" + id);

        case TAILORS:
            id = db.insert(TailorsContract.TABLE_TAILORS,null,values);
            getContext().getContentResolver().notifyChange(uri,null);
            return Uri.parse(TAILORS_TABLE + "/" + id);

        case STATS:
            id = db.insert(StatsContract.TABLE_STATS,null,values);
            getContext().getContentResolver().notifyChange(uri,null);
            return Uri.parse(STATS_TABLE + "/" + id);
        default:
            throw new IllegalArgumentException("Unknown URI: " + uri);
    }
}

@Override
public int delete(Uri uri
        , String selection
        , String[] selectionArgs)
{
    int uriType = uriMatcher.match(uri);
    SQLiteDatabase sqlDB = database.getWritableDatabase();
    int rowsDeleted = 0;
    String id ="";

    Log.d(Constants.APP_TAG,"URIType is : " + uriType);
    Log.d(Constants.APP_TAG,"URI is : " + uri.toString());

    switch (uriType) {
        case ITEMS:
            rowsDeleted = sqlDB.delete(ItemsContract.TABLE_ITEMS, selection, selectionArgs);
            break;
        case ITEM_ID:
            id = uri.getLastPathSegment();
            if (TextUtils.isEmpty(selection)) {
                rowsDeleted = sqlDB.delete(ItemsContract.TABLE_ITEMS, ItemsContract.ITEM_ID + "=" + id, null);
            } else {
                rowsDeleted = sqlDB.delete(ItemsContract.TABLE_ITEMS, ItemsContract.ITEM_ID + "=" + id + " AND " + selection, selectionArgs);
            }
            break;
        case MERCHANDISES:
            rowsDeleted = sqlDB.delete(MerchandisesContract.TABLE_MERCHANDISES, selection, selectionArgs);
            break;
        case MERCHANDISE_ID:
            id = uri.getLastPathSegment();
            if (TextUtils.isEmpty(selection)) {
                rowsDeleted = sqlDB.delete(MerchandisesContract.TABLE_MERCHANDISES, MerchandisesContract.MERCHANDISE_ID+ "=" + id, null);
            } else {
                rowsDeleted = sqlDB.delete(MerchandisesContract.TABLE_MERCHANDISES, MerchandisesContract.MERCHANDISE_ID + "=" + id + " AND " + selection, selectionArgs);
            }
            break;
        case TAILORS:
            rowsDeleted = sqlDB.delete(TailorsContract.TABLE_TAILORS, selection, selectionArgs);
            break;
        case TAILORS_ID:
            id = uri.getLastPathSegment();
            if (TextUtils.isEmpty(selection)) {
                rowsDeleted = sqlDB.delete(TailorsContract.TABLE_TAILORS, TailorsContract.TAILOR_ID + "=" + id, null);
            } else {
                rowsDeleted = sqlDB.delete(TailorsContract.TABLE_TAILORS, TailorsContract.TAILOR_ID + "=" + id + " AND " + selection, selectionArgs);
            }
            break;
        case STAFF:
            rowsDeleted = sqlDB.delete(StaffContract.TABLE_STAFF, selection, selectionArgs);
            break;
        case STAFF_ID:
            id = uri.getLastPathSegment();
            if (TextUtils.isEmpty(selection)) {
                rowsDeleted = sqlDB.delete(StaffContract.TABLE_STAFF, StaffContract.STAFF_ID + "=" + id, null);
            } else {
                rowsDeleted = sqlDB.delete(StaffContract.TABLE_STAFF, StaffContract.STAFF_ID + "=" + id + " AND " + selection, selectionArgs);
            }
            break;
        case SUITS:
            rowsDeleted = sqlDB.delete(SuitsContract.TABLE_SUITS, selection, selectionArgs);
            break;
        case SUITS_ID:
            id = uri.getLastPathSegment();
            if (TextUtils.isEmpty(selection)) {
                rowsDeleted = sqlDB.delete(SuitsContract.TABLE_SUITS, SuitsContract.SUITS_ID + "=" + id, null);
            } else {
                rowsDeleted = sqlDB.delete(SuitsContract.TABLE_SUITS, SuitsContract.SUITS_ID + "=" + id + " AND " + selection, selectionArgs);
            }
            break;
        case ORDERS:
            rowsDeleted = sqlDB.delete(OrdersContract.TABLE_ORDERS, selection, selectionArgs);
            break;
        case ORDERS_ID:
            id = uri.getLastPathSegment();
            if (TextUtils.isEmpty(selection)) {
                rowsDeleted = sqlDB.delete(OrdersContract.TABLE_ORDERS, OrdersContract.ORDER_ID + "=" + id, null);
            } else {
                rowsDeleted = sqlDB.delete(OrdersContract.TABLE_ORDERS, OrdersContract.ORDER_ID + "=" + id + " AND " + selection, selectionArgs);
            }
            break;
        case STATS:
            rowsDeleted = sqlDB.delete(StatsContract.TABLE_STATS, selection, selectionArgs);
            break;
        case STATS_ID:
            id = uri.getLastPathSegment();
            if (TextUtils.isEmpty(selection)) {
                rowsDeleted = sqlDB.delete(StatsContract.TABLE_STATS, StatsContract.STATS_ID + "=" + id, null);
            } else {
                rowsDeleted = sqlDB.delete(StatsContract.TABLE_STATS, StatsContract.STATS_ID + "=" + id + " AND " + selection, selectionArgs);
            }
            break;
        default:
            throw new IllegalArgumentException("Unknown URI: " + uri);
    }
    getContext().getContentResolver().notifyChange(uri, null);
    return rowsDeleted;
}

@Override
public int update(Uri uri
        , ContentValues values
        , String selection
        , String[] selectionArgs)
{
    int uriType = uriMatcher.match(uri);
    SQLiteDatabase db = database.getWritableDatabase();
    int rowsUpdated=0;
    Log.d(Constants.APP_TAG,"URIType is : " + uriType);
    Log.d(Constants.APP_TAG,"URI is : " + uri.toString());

    switch (uriType){
        case ITEMS:
            rowsUpdated = db.update(ItemsContract.TABLE_ITEMS,values,selection,selectionArgs);
            break;
        case ITEM_ID:
            String id = uri.getLastPathSegment();
            if(TextUtils.isEmpty(selection)){
                rowsUpdated = db.update(ItemsContract.TABLE_ITEMS,values, ItemsContract.ITEM_ID + "=" + id,null);
            }else{
                rowsUpdated = db.update(ItemsContract.TABLE_ITEMS,values, ItemsContract.ITEM_ID + "=" + id + " AND " + selection,selectionArgs);
            }
            break;
        default:
            throw new IllegalArgumentException("Unknown URI: " + uri);
    }
    getContext().getContentResolver().notifyChange(uri,null);
    return rowsUpdated;
    }
}

我已经用模拟器和物理设备检查了上面的内容提供程序代码，并且一切正常(我已经在 5.0、5.1 和 6.0 模拟器上试过了)。

这是 (JellyBean 4.2.2) 的 Logcat:

02-20 21:12:27.480 1796-1808/? D/PTI: URIType is : -1
02-20 21:12:27.480 1796-1808/? D/PTI: URI is : content://com.karacraft.security.mastersahab/items
02-20 21:12:27.480 1796-1808/? E/DatabaseUtils: Writing exception to parcel
    java.lang.IllegalArgumentException: Unknown URI: content://com.karacraft.security.mastersahab/items
at com.karacraft.security.MasterSahabProvider.query(MasterSahabProvider.java:260)
at android.content.ContentProvider.query(ContentProvider.java:652)
at android.content.ContentProvider$Transport.query(ContentProvider.java:189)
at android.content.ContentProviderNative.onTransact(ContentProviderNative.java:113)
at android.os.Binder.execTransact(Binder.java:351)
at dalvik.system.NativeStart.run(Native Method)

在其他系统上，URI 总是按预期出现。

这是 KitKat 4.4.4 的 Logcat:

02-21 01:06:51.591 1872-1884/? D/PTI: URIType is : 10
02-21 01:06:51.591 1872-1884/? D/PTI: URI is : content://com.karacraft.security.mastersahab/items
02-21 01:06:51.631 1872-1883/? D/PTI: URIType is : 50
02-21 01:06:51.631 1872-1883/? D/PTI: URI is : content://com.karacraft.security.mastersahab/orders
02-21 01:06:51.631 1872-1884/? D/PTI: URIType is : 70
02-21 01:06:51.631 1872-1884/? D/PTI: URI is : content://com.karacraft.security.mastersahab/suits
02-21 01:06:51.631 1872-1883/? D/PTI: URIType is : 90
02-21 01:06:51.631 1872-1883/? D/PTI: URI is : content://com.karacraft.security.mastersahab/tailors
02-21 01:06:51.631 1872-1884/? D/PTI: URIType is : 130
02-21 01:06:51.631 1872-1884/? D/PTI: URI is : content://com.karacraft.security.mastersahab/stats
02-21 01:06:51.641 1872-1883/? D/PTI: URIType is : 110
02-21 01:06:51.641 1872-1883/? D/PTI: URI is : content://com.karacraft.security.mastersahab/staff
02-21 01:06:51.641 1872-1884/? D/PTI: URIType is : 30
02-21 01:06:51.641 1872-1884/? D/PTI: URI is : content://com.karacraft.security.mastersahab/merchandises

它在 Kitkat 上显示正确的 URI。

找到解决方案，感谢@MARTEN 的回答

将表名的前导斜杠更改为 URI 解决了这个问题。

//Table Names
private static final String ITEMS_TABLE         = "/" + ItemsContract.TABLE_ITEMS;
private static final String MERCHANDISES_TABLE  = "/" + MerchandisesContract.TABLE_MERCHANDISES;
private static final String ORDERS_TABLE        = "/" + OrdersContract.TABLE_ORDERS;
private static final String SUITS_TABLE         = "/" + SuitsContract.TABLE_SUITS;
private static final String TAILORS_TABLE       = "/" + TailorsContract.TABLE_TAILORS;
private static final String STAFF_TABLE         = "/" + StaffContract.TABLE_STAFF;
private static final String STATS_TABLE         = "/" + StatsContract.TABLE_STATS;

//Uri for Multiple Tables
public static final Uri CONTENT_URI_ITEMS           = Uri.parse("content://" + AUTHORITY + ITEMS_TABLE);
public static final Uri CONTENT_URI_MERCHANDISES    = Uri.parse("content://" + AUTHORITY + MERCHANDISES_TABLE);
public static final Uri CONTENT_URI_ORDERS          = Uri.parse("content://" + AUTHORITY + ORDERS_TABLE);
public static final Uri CONTENT_URI_SUITS           = Uri.parse("content://" + AUTHORITY + SUITS_TABLE);
public static final Uri CONTENT_URI_TAILORS         = Uri.parse("content://" + AUTHORITY + TAILORS_TABLE);
public static final Uri CONTENT_URI_STAFF           = Uri.parse("content://" + AUTHORITY + STAFF_TABLE);
public static final Uri CONTENT_URI_STATS           = Uri.parse("content://" + AUTHORITY + STATS_TABLE);

这个

  //Table Names
private static final String ITEMS_TABLE         =  ItemsContract.TABLE_ITEMS;
private static final String MERCHANDISES_TABLE  =  MerchandisesContract.TABLE_MERCHANDISES;
private static final String ORDERS_TABLE        =  OrdersContract.TABLE_ORDERS;
private static final String SUITS_TABLE         =  SuitsContract.TABLE_SUITS;
private static final String TAILORS_TABLE       =  TailorsContract.TABLE_TAILORS;
private static final String STAFF_TABLE         =  StaffContract.TABLE_STAFF;
private static final String STATS_TABLE         =  StatsContract.TABLE_STATS;

//Uri for Multiple Tables
public static final Uri CONTENT_URI_ITEMS           = Uri.parse("content://" + AUTHORITY + "/" + ITEMS_TABLE);
public static final Uri CONTENT_URI_MERCHANDISES    = Uri.parse("content://" + AUTHORITY + "/" +MERCHANDISES_TABLE);
public static final Uri CONTENT_URI_ORDERS          = Uri.parse("content://" + AUTHORITY + "/" +ORDERS_TABLE);
public static final Uri CONTENT_URI_SUITS           = Uri.parse("content://" + AUTHORITY + "/" +SUITS_TABLE);
public static final Uri CONTENT_URI_TAILORS         = Uri.parse("content://" + AUTHORITY + "/" +TAILORS_TABLE);
public static final Uri CONTENT_URI_STAFF           = Uri.parse("content://" + AUTHORITY + "/" +STAFF_TABLE);
public static final Uri CONTENT_URI_STATS           = Uri.parse("content://" + AUTHORITY + "/" +STATS_TABLE);

最佳答案

在 Android 4.3 中添加了对带有前导斜杠的路径的支持。参见 addUri 的描述, 说明

Starting from API level JELLY_BEAN_MR2, this method will accept a leading slash in the path.

因此只需删除路径中的前导斜线即可。

即替换

uriMatcher.addURI(AUTHORITY, ITEMS_TABLE,ITEMS);

通过

uriMatcher.addURI(AUTHORITY, ItemsContract.TABLE_ITEMS);

顺便说一句。 query 方法中的最后一个 case 语句缺少一个 break; 这意味着 Uri 将始终抛出异常.

关于安卓 : Content Provider : Uri Type Wrong on Jellybean 4. 2.2，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/35529287/

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安卓 : Content Provider : Uri Type Wrong on Jellybean 4. 2.2

找到解决方案，感谢@MARTEN 的回答