无法找到< custom provider>的提供商信息

本文介绍了无法找到&lt; custom provider&gt;的提供商信息的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 29岁程序员，3月因学历无情被辞！ 我有一个简单的应用程序，从中正确定义了 MainActivity ，my Content Provider code> ContentProvider 类似乎alrighty ...这已经测试了运行4.3的nexus i9250和运行4.2.1的Asus Memo Pad以及运行Jelly Bean的VDevices。应用程序运行在每个实例，不会崩溃， LogCat 给我的唯一的事情是无法找到de.somename.provider的提供者信息在我的一个片段尝试查询内容提供程序并获取游标的点。这里的代码： AndroidManifest.xml <？xml version =1.0encoding =utf-8？> < uses-sdk android：minSdkVersion =14 android：targetSdkVersion =18/> < application android：allowBackup =true android：icon =@ drawable / ic_launcher android：label =@ string / app_name android：theme =@ style / AppTheme> < activity android：name =de.somename.hvk3.MainActivity android：label =@ string / app_name> < intent-filter> < action android：name =android.intent.action.MAIN/> < category android：name =android.intent.category.LAUNCHER/> < / intent-filter>< / activity> < activity android：name =de.somename.hvk3.UserSettingActivity android：label =@ string / settings>< / activity> < provider android：authorities =de.somename.provider android：enabled =true android：multiprocess =true android：name =。 hvkContentProvider android：exported =true>< / provider> < / application> hvkContentProvider.java public class hvkContentProvider extends ContentProvider { private static final String DATABASE_NAME =hvkDB ; private static final int DATABASE_VERSION = 1; public static final String Authority =de.somename.provider; public static final String ElementPath =/ hv_kontakte; public static final Uri CONTENT_URI = Uri.parse（content：//+ Authority + ElementPath）; private static final int ALLROWS = 1; private static final int SINGLE_ROW = 2; private static final UriMatcher suriMatcher = new UriMatcher（UriMatcher.NO_MATCH）; static { suriMatcher.addURI（de.somename.provider，ElementPath，ALLROWS）; suriMatcher.addURI（de.somename.provider，ElementPath +/＃，SINGLE_ROW）; } public static final String KEY_ID =_id; public static final String KEY_TYPE =type; public static final String KEY_CLTYP =cltyp; public static final String KEY_MDT =mdt; public static final String KEY_OBJ =obj; public static final String KEY_VTR =vtr; public static final String KEY_FKZ =fkz; public static final String KEY_NAME =name; public static final String KEY_VNAME =vname; public static final String KEY_TEL =tel; public static final String KEY_FAX =fax; public static final String KEY_MOBIL =mobil; public static final String KEY_EMAIL =email; private MySQLiteOpenHelper myOpenHelper; @Override public boolean onCreate（）{ myOpenHelper = new MySQLiteOpenHelper（getContext（），DATABASE_NAME，null，DATABASE_VERSION）; return true; } @Override public光标查询（Uri uri，String [] projection，String selection， String [] selectionArgs，String sortOrder）{ SQLiteDatabase db = myOpenHelper.getReadableDatabase（）; String groupBy = null; String having = null; SQLiteQueryBuilder queryBuilder = new SQLiteQueryBuilder（）; queryBuilder.setTables（MySQLiteOpenHelper.DATABASE_TABLE）; switch（suriMatcher.match（uri））{ case SINGLE_ROW： String rowID = uri.getPathSegments（）。get（1）; queryBuilder.appendWhere（KEY_ID +=+ rowID）; default：break; } 游标cursor = queryBuilder.query（db，projection，selection，selectionArgs，groupBy，having，sortOrder）; return cursor; } @Override public int delete（Uri uri，String selection，String [] selectionArgs）{ SQLiteDatabase db = myOpenHelper.getWritableDatabase（）; switch（suriMatcher.match（uri））{ case SINGLE_ROW： String rowID = uri.getPathSegments（）。get（1）; selection = KEY_ID +=+ rowID +（！TextUtils.isEmpty（selection）？AND（+ selection +'）'：）; default：break; } //要返回已删除项的数量，必须指定where子句。删除所有行并返回值1 if（selection == null） selection =1; return db.delete（MySQLiteOpenHelper.DATABASE_TABLE，selection，selectionArgs）; } @Override public Uri insert（Uri uri，ContentValues values）{ SQLiteDatabase db = myOpenHelper.getWritableDatabase（）; String nullColumnHack = null; long id = db.insert（MySQLiteOpenHelper.DATABASE_TABLE，nullColumnHack，values）; if（id> -1）{ Uri insertedId = ContentUris.withAppendedId（CONTENT_URI，id）; getContext（）。getContentResolver（）。notifyChange（insertedId，null）; return insertedId; } else return null; } @Override public int update（Uri uri，ContentValues values，String selection， String [] selectionArgs）{ SQLiteDatabase db = myOpenHelper.getWritableDatabase（）; switch（suriMatcher.match（uri））{ case SINGLE_ROW： String rowID = uri.getPathSegments（）。get（1）; selection = KEY_ID +=+ rowID +（！TextUtils.isEmpty（selection）？AND（+ selection +'）'：）; default：break; } return db.update（MySQLiteOpenHelper.DATABASE_TABLE，values，selection，selectionArgs）; } @Override public String getType（Uri uri）{ switch（suriMatcher.match（uri））{ case ALLROWS： returnvnd.android.cursor.dir / vnd.somename.contacts; case SINGLE_ROW： returnvnd.android.cursor.item / vnd.somename.contacts; 默认值： throw new IllegalArgumentException（Unsupported URI：+ uri）; } } @Override public ParcelFileDescriptor openFile（Uri uri，String mode）throws FileNotFoundException { //查找行ID并将其用作文件名 String rowID = uri.getPathSegments（）。get（1）; //在应用程序外部文件目录中创建一个文件对象 String picsDir = Environment.DIRECTORY_PICTURES; 文件file = new File（getContext（）。getExternalFilesDir（picsDir），rowID）; if（！file.exists（））{ try { file.createNewFile（）; } catch（IOException e）{ //Log.d(TAG，文件创建失败：+ e.getMessage（））; } } //将mode参数转换为相应的Parcel文件描述符打开模式 int fileMode = 0; if（mode.contains（w）） fileMode | = ParcelFileDescriptor.MODE_WRITE_ONLY; if（mode.contains（r）） fileMode | = ParcelFileDescriptor.MODE_READ_ONLY; if（mode.contains（+）） fileMode | = ParcelFileDescriptor.MODE_APPEND; return ParcelFileDescriptor.open（file，fileMode）; } private class MySQLiteOpenHelper extends SQLiteOpenHelper {//以前是静态的 public static final String DATABASE_TABLE =hv_kontakte; private static final String DATABASE_CREATE = CREATE TABLE+ DATABASE_TABLE +（+ KEY_ID +INTEGER PRIMARY KEY AUTOINCREMENT，+ KEY_TYPE +TEXT，+ KEY_CLTYP +TEXT ，+ KEY_MDT +INTEGER，+ KEY_OBJ +INTEGER， + KEY_VTR +INTEGER，+ KEY_FKZ +INTEGER，+ KEY_NAME +TEXT，+ KEY_VNAME +TEXT $ b + KEY_TEL +TEXT，+ KEY_FAX +TEXT，+ KEY_MOBIL +TEXT，+ KEY_EMAIL +TEXT）; public MySQLiteOpenHelper（Context context，String name，SQLiteDatabase.CursorFactory factory，int version）{ super（context，DATABASE_NAME，null，DATABASE_VERSION）; } @Override public void onCreate（SQLiteDatabase database）{ database.execSQL（DATABASE_CREATE）; hvkContentProvider.this.insertSomeContacts（）; } @Override public void onUpgrade（SQLiteDatabase数据库，int oldVersion，int newVersion）{ database.execSQL（DROP TABLE IF EXISTS+ DATABASE_TABLE） ; onCreate（database）; } } } HdwFragment.java public class HdwFragment extends Fragment { private SimpleCursorAdapter hdwDataAdapter; private ListView listview; public static final String ARG_SECTION_NUMBER =section_number; private static final String TAG =HdwFragment; public HdwFragment（）{} @Override public View onCreateView（LayoutInflater inflater，ViewGroup container，Bundle savedInstanceState）{ 上下文上下文= getActivity （）; 查看rootView = inflater.inflate（R.layout.fragment_all，container，false）; TextView dummyTextView =（TextView）rootView.findViewById（R.id.section_label）; dummyTextView.setText（Dienstleister）; //android.support.v4.app.LoaderManager loaderManager = getLoaderManager（）; Log.i（TAG，Before getContentResolver）; ContentResolver cr = context.getContentResolver（）; Log.i（TAG，Before result_columns）; String [] result_columns = new String [] { hvkContentProvider.KEY_ID， hvkContentProvider.KEY_TYPE， hvkContentProvider.KEY_CLTYP， hvkContentProvider.KEY_NAME， hvkContentProvider.KEY_VNAME }; Log.i（TAG，Before where，whereArgs and order）; String where = null; String whereArgs [] = null; String order = null; Log.i（TAG，Before resultCursor action）; Log.i（TAG，hvkContentProvider URI：+ hvkContentProvider.CONTENT_URI）; Cursor resultCursor = cr.query（hvkContentProvider.CONTENT_URI，result_columns，where，whereArgs，order）; Log.i（TAG，resultCursor =+ resultCursor）; Log.i（TAG，Before fromColumns）; String [] fromColumns = new String [] { hvkContentProvider.KEY_TYPE， hvkContentProvider.KEY_CLTYP， hvkContentProvider.KEY_NAME， hvkContentProvider.KEY_VNAME } ; Log.i（TAG，Before toViews）; int [] toViews = new int [] { R.id.contactType， R.id.contactCltype， R.id.contactName， id.contactVname }; Log.i（TAG，适配器之前）; hdwDataAdapter = new SimpleCursorAdapter（getActivity（），R.layout.object_list_item，resultCursor，fromColumns，toViews，0）; listview =（ListView）rootView.findViewById（R.id.list_all）; listview.setAdapter（hdwDataAdapter）; Log.i（TAG，Before return Layout）; return（LinearLayout）rootView; } @Override public void onActivityCreated（Bundle savedInstanceState）{ super.onActivityCreated（savedInstanceState）; // Bundle args = null; //loaderManager.initLoader(LOADER_ID，args，loaderCallback）; } } 方法：insertSomeFunctions（）我已经离开，因为它没有区别，这里，要给这个asap一个赏金。真的需要这样做。解决方案 < provider android：authorities = .somename.provider android：enabled =true android：multiprocess =true android：name =hvkContentProvider android：exported =true >< / provider> 从< provider> ：链接 在您的情况下， android：authorities 应该具有值： de.somename.provider.hvkContentProvider 。 所以，如果你在清单 $ c>标签 AndroidManifest.xml ，请确保该包中包含 hvkContentProvider 。 Else，change android：name =。hvkContentProvider到 android：name =de.somename.hvk3.hvkContentProvider或 your.package.name.hvkContentProvider I have read just about everything there is to find here on this issue, not getting past this.I have a simple app starting with the MainActivity, my Content Provider is correctly defined in AndroidManifest.xml, the ContentProvider class seems alrighty...this has been tested on a nexus i9250 running 4.3 and an Asus Memo Pad running 4.2.1 as well as VDevices running Jelly Bean. The App runs in every instance and does not crash, the only thing the LogCat gives me is "Failed to find provider info for de.somename.provider" at the point where one of my fragments tries to query the Content Provider and get a cursor. Here the Code:AndroidManifest.xml<?xml version="1.0" encoding="utf-8"?><uses-sdk android:minSdkVersion="14" android:targetSdkVersion="18" /><application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name="de.somename.hvk3.MainActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter></activity> <activity android:name="de.somename.hvk3.UserSettingActivity" android:label="@string/settings" ></activity> <provider android:authorities="de.somename.provider" android:enabled="true" android:multiprocess="true" android:name=".hvkContentProvider" android:exported="true" ></provider></application>hvkContentProvider.java public class hvkContentProvider extends ContentProvider {private static final String DATABASE_NAME = "hvkDB";private static final int DATABASE_VERSION = 1;public static final String Authority = "de.somename.provider";public static final String ElementPath = "/hv_kontakte";public static final Uri CONTENT_URI = Uri.parse("content://" + Authority + ElementPath);private static final int ALLROWS = 1;private static final int SINGLE_ROW = 2;private static final UriMatcher suriMatcher = new UriMatcher(UriMatcher.NO_MATCH);static{ suriMatcher.addURI("de.somename.provider", ElementPath, ALLROWS); suriMatcher.addURI("de.somename.provider", ElementPath + "/#", SINGLE_ROW);}public static final String KEY_ID = "_id";public static final String KEY_TYPE = "type";public static final String KEY_CLTYP = "cltyp";public static final String KEY_MDT = "mdt";public static final String KEY_OBJ = "obj";public static final String KEY_VTR = "vtr";public static final String KEY_FKZ = "fkz";public static final String KEY_NAME = "name";public static final String KEY_VNAME = "vname";public static final String KEY_TEL = "tel";public static final String KEY_FAX = "fax";public static final String KEY_MOBIL = "mobil";public static final String KEY_EMAIL = "email";private MySQLiteOpenHelper myOpenHelper;@Overridepublic boolean onCreate() { myOpenHelper = new MySQLiteOpenHelper(getContext(), DATABASE_NAME, null, DATABASE_VERSION); return true;}@Overridepublic Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) { SQLiteDatabase db = myOpenHelper.getReadableDatabase(); String groupBy = null; String having = null; SQLiteQueryBuilder queryBuilder = new SQLiteQueryBuilder(); queryBuilder.setTables(MySQLiteOpenHelper.DATABASE_TABLE); switch(suriMatcher.match(uri)){ case SINGLE_ROW: String rowID = uri.getPathSegments().get(1); queryBuilder.appendWhere(KEY_ID + "=" + rowID); default: break; } Cursor cursor = queryBuilder.query(db, projection, selection, selectionArgs, groupBy, having, sortOrder); return cursor;}@Overridepublic int delete(Uri uri, String selection, String[] selectionArgs) { SQLiteDatabase db = myOpenHelper.getWritableDatabase(); switch(suriMatcher.match(uri)){ case SINGLE_ROW: String rowID = uri.getPathSegments().get(1); selection = KEY_ID + "=" + rowID + (!TextUtils.isEmpty(selection) ? " AND (" + selection + ')' : ""); default: break; } //To return the number of deleted items you must specify a where clause. To delete all rows and return a value pass in "1" if (selection == null) selection = "1"; return db.delete(MySQLiteOpenHelper.DATABASE_TABLE, selection, selectionArgs);}@Overridepublic Uri insert(Uri uri, ContentValues values) { SQLiteDatabase db = myOpenHelper.getWritableDatabase(); String nullColumnHack = null; long id = db.insert(MySQLiteOpenHelper.DATABASE_TABLE, nullColumnHack, values); if(id > -1){ Uri insertedId = ContentUris.withAppendedId(CONTENT_URI, id); getContext().getContentResolver().notifyChange(insertedId, null); return insertedId; } else return null;}@Overridepublic int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) { SQLiteDatabase db = myOpenHelper.getWritableDatabase(); switch(suriMatcher.match(uri)){ case SINGLE_ROW: String rowID = uri.getPathSegments().get(1); selection = KEY_ID + "=" + rowID + (!TextUtils.isEmpty(selection) ? " AND (" + selection + ')' : ""); default: break; } return db.update(MySQLiteOpenHelper.DATABASE_TABLE, values, selection, selectionArgs);}@Overridepublic String getType(Uri uri) { switch(suriMatcher.match(uri)){ case ALLROWS: return "vnd.android.cursor.dir/vnd.somename.contacts"; case SINGLE_ROW: return "vnd.android.cursor.item/vnd.somename.contacts"; default: throw new IllegalArgumentException("Unsupported URI: " + uri); }}@Overridepublic ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException { //Find the row ID and use it as a filename String rowID = uri.getPathSegments().get(1); //Create a file object in the applications external files directory String picsDir = Environment.DIRECTORY_PICTURES; File file = new File(getContext().getExternalFilesDir(picsDir), rowID); if(!file.exists()) { try{ file.createNewFile(); } catch (IOException e) { //Log.d(TAG, "File creation failed: " + e.getMessage()); } } //Translate the mode parameter to the corresponding Parcel File Descriptor open mode int fileMode = 0; if(mode.contains("w")) fileMode |= ParcelFileDescriptor.MODE_WRITE_ONLY; if(mode.contains("r")) fileMode |= ParcelFileDescriptor.MODE_READ_ONLY; if(mode.contains("+")) fileMode |= ParcelFileDescriptor.MODE_APPEND; return ParcelFileDescriptor.open(file, fileMode);}private class MySQLiteOpenHelper extends SQLiteOpenHelper { //used to be static public static final String DATABASE_TABLE = "hv_kontakte"; private static final String DATABASE_CREATE = "CREATE TABLE " + DATABASE_TABLE + "(" + KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " + KEY_TYPE + " TEXT, " + KEY_CLTYP + " TEXT, " + KEY_MDT + " INTEGER, " + KEY_OBJ + " INTEGER, " + KEY_VTR + " INTEGER, " + KEY_FKZ + " INTEGER, " + KEY_NAME + " TEXT, " + KEY_VNAME + " TEXT, " + KEY_TEL + " TEXT, " + KEY_FAX + " TEXT, " + KEY_MOBIL + " TEXT, " + KEY_EMAIL + " TEXT)"; public MySQLiteOpenHelper(Context context, String name, SQLiteDatabase.CursorFactory factory, int version){ super(context, DATABASE_NAME, null, DATABASE_VERSION); } @Override public void onCreate(SQLiteDatabase database) { database.execSQL(DATABASE_CREATE); hvkContentProvider.this.insertSomeContacts(); } @Override public void onUpgrade(SQLiteDatabase database, int oldVersion, int newVersion) { database.execSQL("DROP TABLE IF EXISTS" + DATABASE_TABLE); onCreate(database); }}}HdwFragment.javapublic class HdwFragment extends Fragment{private SimpleCursorAdapter hdwDataAdapter;private ListView listview;public static final String ARG_SECTION_NUMBER = "section_number";private static final String TAG = "HdwFragment";public HdwFragment(){}@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState){ Context context = getActivity(); View rootView = inflater.inflate(R.layout.fragment_all,container, false); TextView dummyTextView = (TextView) rootView.findViewById(R.id.section_label); dummyTextView.setText("Dienstleister"); //android.support.v4.app.LoaderManager loaderManager = getLoaderManager(); Log.i(TAG, "Before getContentResolver"); ContentResolver cr = context.getContentResolver(); Log.i(TAG, "Before result_columns"); String[] result_columns = new String[] { hvkContentProvider.KEY_ID, hvkContentProvider.KEY_TYPE, hvkContentProvider.KEY_CLTYP, hvkContentProvider.KEY_NAME, hvkContentProvider.KEY_VNAME }; Log.i(TAG, "Before where,whereArgs and order"); String where = null; String whereArgs[] = null; String order = null; Log.i(TAG, "Before resultCursor action"); Log.i(TAG, "hvkContentProvider URI: " + hvkContentProvider.CONTENT_URI); Cursor resultCursor = cr.query(hvkContentProvider.CONTENT_URI, result_columns, where, whereArgs, order); Log.i(TAG, "resultCursor = " + resultCursor); Log.i(TAG, "Before fromColumns"); String[] fromColumns = new String[]{ hvkContentProvider.KEY_TYPE, hvkContentProvider.KEY_CLTYP, hvkContentProvider.KEY_NAME, hvkContentProvider.KEY_VNAME }; Log.i(TAG, "Before toViews"); int[] toViews = new int[]{ R.id.contactType, R.id.contactCltype, R.id.contactName, R.id.contactVname }; Log.i(TAG, "Before Adapter"); hdwDataAdapter = new SimpleCursorAdapter(getActivity(), R.layout.object_list_item, resultCursor, fromColumns, toViews, 0); listview = (ListView) rootView.findViewById(R.id.list_all); listview.setAdapter(hdwDataAdapter); Log.i(TAG, "Before return Layout"); return (LinearLayout) rootView;}@Overridepublic void onActivityCreated(Bundle savedInstanceState){ super.onActivityCreated(savedInstanceState); //Bundle args = null; //loaderManager.initLoader(LOADER_ID, args, loaderCallback);}}The Method: insertSomeFunctions() i have left out since it doesn't make a difference here, gonna put a bounty on this asap. Really need to get this done. 解决方案 <provider android:authorities="de.somename.provider" android:enabled="true" android:multiprocess="true" android:name=".hvkContentProvider" android:exported="true" ></provider>From reference page on <provider>: LinkIn your case, android:authorities should have the value: de.somename.provider.hvkContentProvider.So, if you are defining package in the manifest tag of AndroidManifest.xml, make sure hvkContentProvider is in that package. Else, change android:name=".hvkContentProvider" to android:name="de.somename.hvk3.hvkContentProvider" or your.package.name.hvkContentProvider 这篇关于无法找到&lt; custom provider&gt;的提供商信息的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！