JAVA代码判断数据库表是否存在

public boolean tabbleIsExist(String tableName){

boolean result = false;

if(tableName == null){

return false;

}

SQLiteDatabase db = null;

Cursor cursor = null;

try {

db = mDbHelper.getReadableDatabase();

String sql = "select count(*) as c from Sqlite_master where type ='table' and name ='"+tableName.trim()+"' ";

cursor = db.rawQuery(sql, null);

if(cursor.moveToNext()){

int count = cursor.getInt(0);

if(count>0){

result = true;

}

}

} catch (Exception e) {

// TODO: handle exception

}

return result;

}