求助关于Android中的SQLException
求教高手，加下划线处为什么报错package yin.yun.contentProvider;
import java.sql.SQLException;
import android.content.ContentProvider;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.UriMatcher;
import android.database.Cursor;
//import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.database.sqlite.SQLiteQueryBuilder;
import android.database.sqlite.SQLiteDatabase.CursorFactory;
import android.net.Uri;
public class PeopleProvider extends ContentProvider {
private static final String DB_NAME="people.db";
private static final String DB_TABLE="peopleinfo";
private static final int DB_VERSION=1;
private SQLiteDatabase db;
private DBOpenHelper dbOpenHelper;
private static final int MULTIPLE_PEOPLE=1;
private static final int SINGLE_PEOPLE=2;
private static final UriMatcher uriMatcher;
static{
uriMatcher=new UriMatcher(UriMatcher.NO_MATCH);
uriMatcher.addURI(People.AUTHORITY,People.PATH_MULTIPLE,MULTIPLE_PEOPLE);
uriMatcher.addURI(People.AUTHORITY, People.PATH_SINGLE,SINGLE_PEOPLE);
}
@Override
public String getType(Uri uri) {
switch(uriMatcher.match(uri)){
case MULTIPLE_PEOPLE:
return People.MINE_TYPE_MULTIPLE;
case SINGLE_PEOPLE:
return People.MINE_TYPE_SINGLE;
default:
throw new IllegalArgumentException("Unkown uri:"+uri);
}
}
public Uri insert(Uri uri,ContentValues values){
long id=db.insert(DB_TABLE,null,values);
if(id>0){
Uri newUri=ContentUris.withAppendedId(People.CONTENT_URI, id);
getContext().getContentResolver().notifyChange(newUri, null);
return newUri;
}
求教高手，这里为什么报错？
throw new SQLException("Failed to insert row into" + uri);
}
@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
int count=0;
switch(uriMatcher.match(uri)){
case MULTIPLE_PEOPLE:
count=db.delete(DB_TABLE,selection,selectionArgs);
break;
case SINGLE_PEOPLE:
String segment=uri.getPathSegments().get(1);
count=db.delete(DB_TABLE, People.KEY_ID+"="+segment, selectionArgs);
break;
default:
throw new IllegalArgumentException("Unsupported URI:"+uri);
}
getContext().getContentResolver().notifyChange(uri, null);
return count;
}
@Override
public boolean onCreate() {
Context context=getContext();
dbOpenHelper=new DBOpenHelper(context, DB_NAME, null, DB_VERSION);
db=dbOpenHelper.getWritableDatabase();
if(db==null)
return false;
else
return true;
}
@Override
public Cursor query(Uri uri, String[] projection, String selection,
String[] selectionArgs, String sortOrder) {
SQLiteQueryBuilder qb=new SQLiteQueryBuilder();
qb.setTables(DB_TABLE);
switch(uriMatcher.match(uri)){
case SINGLE_PEOPLE:
qb.appendWhere(People.KEY_ID+"="+uri.getPathSegments().get(1));
break;
default:
break;
}
Cursor cursor=qb.query(db, projection,selection, selectionArgs, null,null,sortOrder);
cursor.setNotificationUri(getContext().getContentResolver(), uri);
return cursor;
}
@Override
public int update(Uri uri, ContentValues values, String selection,
String[] selectionArgs) {
int count;
switch(uriMatcher.match(uri)){
case MULTIPLE_PEOPLE:
count=db.update(DB_TABLE, values, selection, selectionArgs);
case SINGLE_PEOPLE:
String segment=uri.getPathSegments().get(1);
count=db.update(DB_TABLE, values,People.KEY_ID+"="+segment,selectionArgs);
break;
default:
throw new IllegalArgumentException("Unknow URI:"+uri);
}
getContext().getContentResolver().notifyChange(uri,null);
return count;
}
private static class DBOpenHelper extends SQLiteOpenHelper{
public DBOpenHelper(Context context, String name, CursorFactory factory,
int version) {
super(context, name, factory, version);
// TODO Auto-generated constructor stub
}
private static final String DB_CREATE="create table"+DB_TABLE+"("+People.KEY_ID+"integer primary key autoincrement," +
""+People.KEY_NAME+"text not null ,"+People.KEY_AGE+"integer,"+People.KEY_HEIGHT+"float);";
@Override
public void onCreate(SQLiteDatabase _db){
_db.execSQL(DB_CREATE);
}
@Override
public void onUpgrade(SQLiteDatabase _db,int _oldVersion,int _newVersion){
_db.execSQL("DROP TABLE IF EXISTS"+DB_TABLE);
onCreate(_db);
}
}
}
--------------------编程问答-------------------- 插入数据失败了，你把生成的SQL语句翻出来看看就知道了。 --------------------编程问答-------------------- 一样的错，求解 --------------------编程问答-------------------- import java.sql.SQLException;
这一句 --------------------编程问答--------------------
public Uri insert(Uri uri,ContentValues values){
long id=db.insert(DB_TABLE,null,values);
if(id>0){
Uri newUri=ContentUris.withAppendedId(People.CONTENT_URI, id);
getContext().getContentResolver().notifyChange(newUri, null);
return newUri;
}
求教高手，这里为什么报错？
throw new SQLException("Failed to insert row into" + uri);
}
这个方法你都return 了 还抛什么异常啊~ 你要抛异常 请添加在return 前 --------------------编程问答--------------------
前面有if的 --------------------编程问答--------------------
求教高手，这里为什么报错？
throw new SQLException("Failed to insert row into" + uri);
这句话 后面加个return null;
补充：移动开发 , Android
