我的应用程序崩溃在不同的地方,但错误是相同的,只有索引有时更改,任何想法为什么发生这种情况我也附加了我的截图:

*** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayM objectAtIndex:]: index 1 beyond bounds for empty array'
*** First throw call stack:
(0x20d4012 0x1e34e7e 0x20760b4 0x152ba 0xdc4067 0xdc42db 0x14fca 0x16aa7 0x239253f 0x23a4014 0x2393fd6 0x23a4014 0x239b8b7 0x2397405 0x2394768 0x207aaf5 0x2079f44 0x2079e1b 0x2ca87e3 0x2ca8668 0xd78ffc 0x2b8d 0x2ab5)
libc++abi.dylib: terminate called throwing an exception
(lldb) 

我已经尝试调试它以确定导致崩溃的确切位置或代码行但没有成功.它只是随机崩溃

谢谢

编辑1:

好吧,这是代码:

一旦获取,我将它们保存为:

-(void)saveTweetsArray:(NSMutableArray *)array{
    NSString *dbPath = [DatabaseHelper databasePath];
    sqlite3_stmt *statement;
    if(sqlite3_open([dbPath UTF8String], &db) == SQLITE_OK) {
        NSString *insertSql = [NSString stringWithFormat:@"delete from %@ where ACCOUNTID='%@'",[DatabaseHelper TweetsTable],self.accountId];
        const char *insertStmt = [insertSql UTF8String];
        sqlite3_prepare_v2(db, insertStmt, -1, &statement, NULL);
        if(sqlite3_step(statement) == SQLITE_DONE){
            NSLog(@"old tweets removed");
        }
        else{
            NSLog(@" deletion failed");
            NSLog(@"%@", [NSString stringWithUTF8String:(char*)sqlite3_errmsg(db)]);
        }
        sqlite3_finalize(statement);
        for(int i=0;i<[array count];i++){
            NSMutableDictionary *dictionary = [array objectAtIndex:i];
            NSString *insertSql = [NSString stringWithFormat:@"insert into %@ (ID,TWEET_TEXT,USER_NAME,ACCOUNTID) values (?,?,?,?)",[DatabaseHelper TweetsTable]];
            const char *insertStmt = [insertSql UTF8String];
            sqlite3_prepare_v2(db, insertStmt, -1, &statement, NULL);
            sqlite3_bind_text(statement, 1, [[dictionary valueForKey:@"id"] UTF8String], -1, NULL);
            sqlite3_bind_text(statement, 2, [[dictionary valueForKey:@"text"] UTF8String], -1, NULL);
            sqlite3_bind_text(statement, 3, [[dictionary valueForKey:@"userName"] UTF8String], -1, NULL);
            sqlite3_bind_text(statement, 4, [self.accountId UTF8String], -1, NULL);
            if(sqlite3_step(statement) == SQLITE_DONE)
                NSLog(@"data saved");
            else{
                NSLog(@"save failed");
                NSLog(@"%@", [NSString stringWithUTF8String:(char*)sqlite3_errmsg(db)]);
            }
            sqlite3_finalize(statement);
        }
        sqlite3_close(db);
    }

这是我在获取新推文时在tableview上填充的地方:

-(NSMutableArray*)tweetsArray{
    NSMutableArray* tweetsArray=[[NSMutableArray alloc] init];
    NSString *dbPath = [DatabaseHelper databasePath];
    if(sqlite3_open([dbPath UTF8String], &db) == SQLITE_OK) {
        const NSString *sql_stmt;
        sql_stmt= [NSString stringWithFormat:@"select ID,TWEET_TEXT,USER_NAME from %@ where ACCOUNTID='%@' ",[DatabaseHelper TweetsTable],self.accountId];

            const char *sql_stmt1=[sql_stmt UTF8String];
            sqlite3_stmt *compiledStatement;
            if(sqlite3_prepare_v2(db, sql_stmt1, -1, &compiledStatement, NULL) == SQLITE_OK) {
                // Loop through the results and add them to the feeds array
                while(sqlite3_step(compiledStatement) == SQLITE_ROW) {
                    // Read the data from the result row
                    NSMutableDictionary *dictionary=[[NSMutableDictionary alloc] init];
                    [dictionary setValue:[NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 0)] forKey:@"id"];
                    [dictionary setValue:((char *)sqlite3_column_text(compiledStatement, 1))!=NULL?[NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 1)]:@"" forKey:@"text"];
                    [dictionary setValue:[NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 2)] forKey:@"userName"];
                    [textsArray addObject:dictionary];
                }
                sqlite3_finalize(compiledStatement);
            }
        }
    sqlite3_close(db);
    return textsArray;
}

这是我在格式化后放在tableview上的地方:

        -(void)formatTweetsAndPaintView{
           NSArray *tweets = [dictionary valueForKey:@"twitter"];

        //first save the old tweets to show while new are fetched
           NSMutableArray *tempTweets=[[NSMutableArray alloc] initWithArray:[baseController tweetsArray]];

        //then clear the old tweets then format and fill array
           [[baseController tweetsArray] removeAllObjects];

           if(tweets && tweets.count){
                   for(int i=0;i<[tweets count];i++){
                           NSMutableDictionary *tweetsDictionary = [[NSMutableDictionary alloc] init];
                           [tweetsDictionary setValue:[[tweets objectAtIndex:i] valueForKey:@"id_str"]    forKey:@"id"];
                           [tweetsDictionary setValue:[[tweets objectAtIndex:i] valueForKey:@"text"] forKey:@"text"];
                           [tweetsDictionary setValue:[[[tweets objectAtIndex:i] valueForKey:@"user"] valueForKey:@"name"] forKey:@"userName"];

                           [[baseController tweetsArray] addObject:tweetsDictionary];
                   }
             }

//include non duplicate tempTweet to tweetArray
    for(int i=0;i<[tempTweets count];i++){
                if(![[baseController tweetsArray] containsObject:[tempTweets objectAtIndex:i]])
                    [[baseController tweetsArray] addObject:[tempTweets objectAtIndex:i]];
            }

            if([dictionary valueForKey:@"twitter"])
                [baseController setDictionary:[dictionary valueForKey:@"twitter"]];

            [baseController reloadTableViewData];

//finally save the tweets
            [[TweetDB _instance] saveTweetsArray:[baseController tweetsArray]];
        }

user1447414.. 8

如果要在程序崩溃时停止程序,则需要添加异常断点.

转到Breakpoint Navigator,单击加号按钮,然后选择Add Exception Breakpoint ...

在XCode 5中,它会立即添加它,但在以前的版本中,您需要选择:所有异常

这将停止在您的NSArray超出界限的位置,然后您可以调试.

程序停止后,您应该能够在XCode中看到它崩溃的行.如果在XCode中没有看到该行,则可以在调试器类型中:

(lldb)bt

'bt'将打印程序完成的所有步骤,它将为您提供有关调用哪些方法的信息.

如果这不能提供您需要的信息,您可以尝试这种方式:

你的第二个选择是重复之前的步骤,而不是选择Add Exception Breakpoint ...你应该选择Ad Symbolic Breakpoint ...

选择后,弹出窗口将提示输入一些值.输入以下内容:

在崩溃之前它应该停止.此时,您可以导航到Debug Navigator以查看步骤,并找出位置:

如您所见,setPrivateProperty是在停止之前调用方法的最后一次.

如果Debug Navigator没有提供任何信息,您可以随时转到调试器并键入:

(lldb)bt

和以前一样,'bt'将追溯到更详细的所有步骤.

所有这些信息应足以调试您的程序.如果您需要帮助来解释'bt'输出,那就是另一个线程!