我的内容提供商存在问题。我在我的一个活动中使用内容提供程序，使用CursorLoader和适配器来显示列表。
当且仅当我没有在CursorLoader构造函数中指定selection和selectionArgs参数时，该列表显示了Task表的内容。
我已尝试为选择和选择args传入空值，这将返回整个表的内容。我想要做的是根据C_TASK_CALLID列选择表的完整投影并传入一个callID。
所以我想做的是返回一个基于某些sql的游标，如下所示：
select * from table TASK where C_TASK_CALLID = callID;
有谁能告诉我为什么我会得到以下错误？
我查看了以下SO帖子，但它表明选择和selectionArgs之间存在不匹配。就我而言，这不是真的，因为我只传递了一个参数。
我收到以下错误：
06-01 14:05:56.631 32037-32037/com.carefreegroup.rr3 E/ViewCompletedTasksActivity: about to create CursorLoader.....LoginValidate.C_TASK_CALLID = taskcallid callID = d5f5482f-b240-4eb6-8be1-489a8d75af9b
06-01 14:05:56.636 32037-2691/com.carefreegroup.rr3 E/RR3ContentProvider: inside RR3ContentProvider query method
06-01 14:05:56.636 32037-2691/com.carefreegroup.rr3 E/LoginValidate: NfcScannerApplication.getSecretKey() = 12345
06-01 14:05:56.636 32037-2691/com.carefreegroup.rr3 E/RR3ContentProvider: CASE TASKS
06-01 14:05:56.636 32037-2691/com.carefreegroup.rr3 E/RR3ContentProvider: About to do the query method in content provider
06-01 14:05:56.645 32037-2691/com.carefreegroup.rr3 E/CustomExceptionHandler: stack = java.lang.RuntimeException: An error occurred while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:318)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
at java.util.concurrent.FutureTask.run(FutureTask.java:242)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
at java.lang.Thread.run(Thread.java:762)
Caused by: net.sqlcipher.database.SQLiteException: bind or column index out of range: handle 0x7bf058da88
at net.sqlcipher.database.SQLiteProgram.native_bind_string(Native Method)
at net.sqlcipher.database.SQLiteProgram.bindString(SQLiteProgram.java:245)
at net.sqlcipher.database.SQLiteQuery.bindString(SQLiteQuery.java:183)
at net.sqlcipher.database.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:48)
at net.sqlcipher.database.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1820)
at net.sqlcipher.database.SQLiteQueryBuilder.query(SQLiteQueryBuilder.java:330)
at net.sqlcipher.database.SQLiteQueryBuilder.query(SQLiteQueryBuilder.java:280)
at com.carefreegroup.rr3.RR3ContentProvider.query(RR3ContentProvider.java:396)
at com.carefreegroup.rr3.RR3ContentProvider.query(RR3ContentProvider.java:23)
at android.content.ContentProvider.query(ContentProvider.java:1027)
at android.content.ContentProvider$Transport.query(ContentProvider.java:243)
at android.content.ContentResolver.query(ContentResolver.java:536)
at android.content.CursorLoader.loadInBackground(CursorLoader.java:64)
at android.content.CursorLoader.loadInBackground(CursorLoader.java:56)
at android.content.AsyncTaskLoader.onLoadInBackground(AsyncTaskLoader.java:312)
at android.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:69)
at android.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:66)
at android.os.AsyncTask$2.call(AsyncTask.java:304)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
at java.lang.Thread.run(Thread.java:762)
以下是我的任务表：
public static final String C_ID_TASK_QUEST_COMM = BaseColumns._ID;
public static final String C_TASK_QUEST_COMM_QUESTSION = "taskquestcommquestion";
public static final String C_TASK_QUEST_COMM_COMMENTS = "taskquestcommcomments";
public static final String C_TASK_QUEST_ID = "taskquestid";
public static final String C_TASK_QUEST_TYPE = "taskquesttype";
public static final String C_TASK_CALLID = "taskcallid";
public static final String C_TASK_SENT_TO_SERVER = "tasksenttoserver";
public static final String C_TASK_VALUE = "taskvalue";
下面的
是我的Activity中的CursorLoader构造函数：
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
Log.e(TAG, "inside3 onCreateLoader in ViewCompletedTasksActivityAsync");
String[] projection = { LoginValidate.C_ID_TASK_QUEST_COMM, LoginValidate.C_TASK_QUEST_COMM_QUESTSION, LoginValidate.C_TASK_QUEST_COMM_COMMENTS,
LoginValidate.C_TASK_QUEST_ID,
LoginValidate.C_TASK_QUEST_TYPE , LoginValidate.C_TASK_CALLID, LoginValidate.C_TASK_SENT_TO_SERVER, LoginValidate.C_TASK_VALUE};
String [] selectionArgs = {callID};
Log.e(TAG, "about to create CursorLoader.....LoginValidate.C_TASK_CALLID = " + LoginValidate.C_TASK_CALLID + " callID = " + callID);
cursorLoader = new CursorLoader(this, RR3ContentProvider.CONTENT_URI_TASKS, projection, LoginValidate.C_TASK_CALLID, selectionArgs , null);
return cursorLoader;
}
以下是我的contentProvider：
public class RR3ContentProvider extends ContentProvider {
private static final String TAG = RR3ContentProvider.class.getSimpleName();
NfcScannerApplication nfcAppObj;
static final String PROVIDER_NAME = "com.xxxxx.xxx.ContentProvider";
static final String URLTASKS = "content://" + PROVIDER_NAME + "/tasks";
static final Uri CONTENT_URI_TASKS = Uri.parse(URLTASKS);
static final String _ID_TASKS = "_id";
static final String TASK_QUESTION = "taskquestcommquestion";
static final String TABLETASKS = "tabletaskquestion";
private static HashMap<String, String> TASK_PROJECTION_MAP;
static final int TASKS = 9;
static final int TASK_ID = 10;
static final UriMatcher uriMatcher;
static{
uriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
uriMatcher.addURI(PROVIDER_NAME, "tasks", TASKS);
uriMatcher.addURI(PROVIDER_NAME, "tasks/#", TASK_ID);
}
/**
* Database specific constant declarations
*/
private SQLiteDatabase db;
@Override
public boolean onCreate() {
Context applicationContext = getContext().getApplicationContext();
nfcAppObj = getRealApplication(applicationContext);
Log.e(TAG, "inside RR3ContentProvider onCreate");
return (nfcAppObj == null)? false:true;
}
@Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
Log.e(TAG, "inside RR3ContentProvider query method");
db = nfcAppObj.getDb();
SQLiteQueryBuilder qb = new SQLiteQueryBuilder();
switch (uriMatcher.match(uri)) {
case TASKS:
Log.e(TAG, "CASE TASKS");
qb.setTables(TABLETASKS);
qb.setProjectionMap(TASK_PROJECTION_MAP);
/*if (sortOrder == null || sortOrder == ""){
sortOrder = LOG_CREATED_TIME + " DESC";
}*/
break;
case TASK_ID:
Log.e(TAG, "CASE TASK_ID");
qb.setTables(TABLETASKS);
qb.appendWhere( _ID_TASKS + "=" + uri.getPathSegments().get(1));
/*if (sortOrder == null || sortOrder == ""){
sortOrder = LOG_CREATED_TIME + " DESC";
}*/
break;
default:
throw new IllegalArgumentException("Unknown URI " + uri);
}
Log.e(TAG, "About to do the query method in content provider");
Cursor c = qb.query(db, projection, selection, selectionArgs,
null, null, sortOrder);
/**
* register to watch a content URI for changes
*/
c.setNotificationUri(getContext().getContentResolver(), uri);
return c;
}//end of query
@Override
public String getType(Uri uri) {
switch (uriMatcher.match(uri)){
/**
* Get all records
*/
case TASKS:
return "vnd.android.cursor.dir/vnd.example.tasks";
/**
* Get a particular record
*/
case TASK_ID:
return "vnd.android.cursor.item/vnd.example.tasks";
default:
throw new IllegalArgumentException("Unsupported URI: " + uri);
}
}
}
答案 0 :(得分：0)
您的SQL查询错误！ “select * from table TASK where C_TASK_CALLID = callID;”冗余的“表”。更改“从TASK中选择*，其中C_TASK_CALLID = callID;”