我有问题获取供应商。我寻找答案,但仍然无法得到正确答案。请帮我解决一下这个。 这里是我的清单:无法获取供应商
<?xml version="1.0" encoding="utf-8"?>
<manifest
package="com.ultramegatech.ey"
xmlns:android="http://schemas.android.com/apk/res/android"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.VIBRATE" />
<application
android:allowBackup="true"
android:icon="@drawable/icon"
android:label="@string/app_name"
android:theme="@style/LightTheme">
<provider
android:name="com.ultramegatech.ey.provider.ElementsProvider"
android:authorities="com.ultramegatech.ey.provider"
android:multiprocess="true"
android:exported="false" />
<activity
android:name="PeriodicTableActivity"
android:label="@string/app_name"
android:screenOrientation="landscape"
android:theme="@style/LightTheme.NoTitleBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="ElementListActivity"
android:label="@string/titleElementList" />
<activity
android:name="ElementDetailsActivity"
android:label="@string/app_name" />
<activity
android:name="EyPreferenceActivity"
android:label="@string/titlePreferences" />
</application>
</manifest>
我的数据库提供商
package com.ultramegatech.ey.provider;
import android.content.ContentProvider;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.UriMatcher;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteQueryBuilder;
import android.net.Uri;
/**
* ContentProvider for accessing the chemical element database.
*
* @author Steve Guidetti
*/
public class ElementsProvider extends ContentProvider {
/* Provider authority */
public static final String AUTHORITY = "com.ultramegatech.ey.provider";
/* Uri matcher ids */
private static final int ELEMENTS = 1;
private static final int ELEMENTS_ID = 2;
private static final int ELEMENTS_NUMBER = 3;
private static final int ELEMENTS_SYMBOL = 4;
private static final int ELEMENTS_FILTER = 5;
/* Uri matcher */
private static final UriMatcher sUriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
static {
sUriMatcher.addURI(AUTHORITY, "elements", ELEMENTS);
sUriMatcher.addURI(AUTHORITY, "elements/#", ELEMENTS_ID);
sUriMatcher.addURI(AUTHORITY, "elements/n/#", ELEMENTS_NUMBER);
sUriMatcher.addURI(AUTHORITY, "elements/s/*", ELEMENTS_SYMBOL);
sUriMatcher.addURI(AUTHORITY, "elements/filter/*", ELEMENTS_FILTER);
}
/* SQLiteOpenHelper */
private DatabaseOpenHelper mDatabaseOpenHelper;
@Override
public boolean onCreate() {
mDatabaseOpenHelper = new DatabaseOpenHelper(getContext());
return true;
}
@Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
String sortOrder) {
final SQLiteQueryBuilder qb = new SQLiteQueryBuilder();
switch(sUriMatcher.match(uri)) {
case ELEMENTS:
qb.setTables(Elements.TABLE_NAME);
break;
case ELEMENTS_ID:
qb.setTables(Elements.TABLE_NAME);
qb.appendWhere(Elements._ID + " = " + uri.getLastPathSegment());
break;
case ELEMENTS_NUMBER:
qb.setTables(Elements.TABLE_NAME);
qb.appendWhere(Elements.NUMBER + " = " + uri.getLastPathSegment());
break;
case ELEMENTS_SYMBOL:
qb.setTables(Elements.TABLE_NAME);
qb.appendWhere(Elements.SYMBOL + " = ");
qb.appendWhereEscapeString(uri.getLastPathSegment());
break;
case ELEMENTS_FILTER:
qb.setTables(Elements.TABLE_NAME);
qb.appendWhere(Elements.NAME + " LIKE ");
qb.appendWhereEscapeString(uri.getLastPathSegment() + "%");
qb.appendWhere(" OR " + Elements.SYMBOL + " LIKE ");
qb.appendWhereEscapeString(uri.getLastPathSegment() + "%");
break;
default:
throw new IllegalArgumentException("Invalid URI: " + uri.toString());
}
final SQLiteDatabase db = mDatabaseOpenHelper.getReadableDatabase();
final Cursor cursor = qb.query(db, projection, selection, selectionArgs, null, null,
sortOrder);
cursor.setNotificationUri(getContext().getContentResolver(), uri);
return cursor;
}
@Override
public String getType(Uri uri) {
switch(sUriMatcher.match(uri)) {
case ELEMENTS:
case ELEMENTS_FILTER:
return Elements.DATA_TYPE;
case ELEMENTS_ID:
case ELEMENTS_NUMBER:
case ELEMENTS_SYMBOL:
return Elements.DATA_TYPE_ITEM;
default:
return null;
}
}
@Override
public Uri insert(Uri uri, ContentValues values) {
String table;
switch(sUriMatcher.match(uri)) {
case ELEMENTS:
table = Elements.TABLE_NAME;
break;
default:
throw new IllegalArgumentException("Invalid URI");
}
final SQLiteDatabase db = mDatabaseOpenHelper.getWritableDatabase();
final long rowId = db.insert(table, null, values);
if(rowId > 0) {
getContext().getContentResolver().notifyChange(uri, null);
return ContentUris.withAppendedId(uri, rowId);
}
throw new SQLException("Failed to insert row into " + uri.toString());
}
@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
String table;
switch(sUriMatcher.match(uri)) {
case ELEMENTS:
table = Elements.TABLE_NAME;
break;
case ELEMENTS_ID:
table = Elements.TABLE_NAME;
final String id = uri.getLastPathSegment();
if(selection == null) {
selection = Elements._ID + " = " + id;
} else {
selection += " AND " + Elements._ID + " = " + id;
}
break;
case ELEMENTS_NUMBER:
table = Elements.TABLE_NAME;
final String number = uri.getLastPathSegment();
if(selection == null) {
selection = Elements.NUMBER + " = " + number;
} else {
selection += " AND " + Elements.NUMBER + " = " + number;
}
break;
default:
throw new IllegalArgumentException("Invalid URI");
}
final SQLiteDatabase db = mDatabaseOpenHelper.getWritableDatabase();
final int rowsAffected = db.delete(table, selection, selectionArgs);
getContext().getContentResolver().notifyChange(uri, null);
return rowsAffected;
}
@Override
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
String table;
switch(sUriMatcher.match(uri)) {
case ELEMENTS:
table = Elements.TABLE_NAME;
break;
case ELEMENTS_ID:
table = Elements.TABLE_NAME;
final String id = uri.getLastPathSegment();
if(selection == null) {
selection = Elements._ID + " = " + id;
} else {
selection += " AND " + Elements._ID + " = " + id;
}
break;
case ELEMENTS_NUMBER:
table = Elements.TABLE_NAME;
final String number = uri.getLastPathSegment();
if(selection == null) {
selection = Elements.NUMBER + " = " + number;
} else {
selection += " AND " + Elements.NUMBER + " = " + number;
}
break;
default:
throw new IllegalArgumentException("Invalid URI");
}
final SQLiteDatabase db = mDatabaseOpenHelper.getWritableDatabase();
final int rowsAffected = db.update(table, values, selection, selectionArgs);
getContext().getContentResolver().notifyChange(uri, null);
return rowsAffected;
}
}
这里是logcat的:
6月2日至一十二日:00:42.041:E/AndroidRuntime(1245): java.lang.RuntimeException:无法获取提供程序 com.ultramegatech.ey.provider:java.lang.ClassNotFoundException: 未找到类“com.ultramegatech.ey.pro vider“的路径: DexPathList [[zip文件 ”/data/app/com.ultramegatech.ey-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.ultramegatech.ey-1, /系统/ lib]] 02-12 06:00:42.041:E/AndroidRuntime(1245):at android.app.ActivityThread.installProvider(ActivityThread.java:4774) 02-12 06:00:42.041:E/AndroidRuntime (1245):at android.app.ActivityThread.installContentProviders(ActivityThread.java:4366) 02-12 06:00:42.041:E/AndroidRuntime(1245):at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4306 ) 02-12 06:00:42.041:E/AndroidRuntime(1245):at android.app.ActivityThread.access $ 1400(ActivityThread.java:135) 02-12 06:00:42.041:E/AndroidRuntime(1245) :在android.app.ActivityThread $ H.handleMessage(ActivityThread.java: 1457) 02-12 06:00:42.041:E/AndroidRuntime(1245):at android.os.Handler.dispatchMessage(Handler.java:102) 02-12 06:00:42.041:E/AndroidRuntime(1245) :at android.os.Looper.loop(Looper.java:137) 02-12 06:00:42.041:E/AndroidRuntime(1245):at android.app.ActivityThread.main(ActivityThread.java:4998) 02 -12 06:00:42.041:E/AndroidRuntime(1245):at java.lang.reflect.Method.invokeNative(Native Method) 02-12 06:00:42.041:E/AndroidRuntime(1245):at java.lang .reflect.Method.invoke(Method.java:515) 02-12 06:00:42.041:E/AndroidRuntime(1245):at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:777 ) 02-12 06:00:42.041:E/AndroidRuntime(1245):at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593) 02-12 0 6:00:42.041:E/AndroidRuntime(1245):at dalvik.system.NativeStart.main(Native Method) 02-12 06:00:42.041:E/AndroidRuntime(1245):引起:java.lang.ClassNotFoundException :在路径上找不到类 “com.ultramegatech.ey.provider”:DexPathList [[zip文件 “/data/app/com.ultramegatech.ey-1.apk"],nativeLibraryDirectories=[/data/app -lib/com.ultramegatech.ey-1, /system/lib] 02-12 06:00:42.041:E/AndroidRuntime(1245):at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56) 02-12 06:00:42.041:E/AndroidRuntime(1245):at java.lang.ClassLoader.loadClass(ClassLoader.java:497) 02-12 06:00:42.041:E/AndroidRuntime(1245):at java.lang.ClassLoader.loadClass(ClassLoader.java:457) 02-12 06:00:42.041:E/AndroidRuntime(1245):a t android.app.ActivityThread.installProvider(ActivityThread.java:4759) 02-12 06:00:42.041:E/AndroidRuntime(1245):... 12更多 02-12 06:00:54.471:I/Process (1245):发送信号。 PID:1245 SIG:9
我的.sql在原始文件夹中,如果它处理了问题。 我只是在gitHub中获取代码,我将为我的论文修改它。谢谢你的答复将非常感谢。提前致谢!
我做到了,但仍然没有奏效。怎么了?感谢您的进一步信息。上帝保佑。 –
我看到您基于此更新了代码和问题中的日志。但是在日志中的错误仍然说没找到类“com.ultramegatech.ey.provider”。 (我假设你已经尝试过干净的构建)。它仍然不是在寻找ElementsProvider,而是将该包作为类名称 – RocketRandom
是的。 。我做了你说的,但没有奏效。我能做什么?非常感谢您的回答。这将是非常有益的。谢谢..立即回答将受到高度赞赏。 –