NSString stringWithUTF8String 中的内存泄漏 [英] Memory leak in NSString stringWithUTF8String

问题描述

我正在调用数据库.在我打电话之后，我发现 NSString 中存在泄漏.有没有人有办法删除它?

I am making a call to a database. After my call, I've found leaks in NSString. Anybody have a solution to remove it?

 NSString *pic = [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectStatement, 5)];

在上面的代码中，我发现了 90% 的泄漏.我只是从数据库中读取数据.

In above code, I found 90% leaks. I just read data from database.

推荐答案

请把问题解释清楚，否则其他人无法确定您的确切问题.

please explain the question well else others can't identify your exact problem.

我认为您正在将 [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectStatement, 5)]; 的值分配给您的类对象属性.

I think you are you are assigning the value of [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectStatement, 5)]; to your class object property.

可以在对应的类dealloc方法中释放分配的类字符串属性，也可以设置为nil.

You can release the assigned class string property in the corresponding class dealloc method.Also set it nil.

示例:

如果你在做

YourClass *classObj =[ YourClass  alloc] init];

classObj.myStringvariable = [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectStatement, 5)];

类结构会喜欢

@interface YourClass {

    NSString *myStringvariable ;

}

@property (nonatomic,retain)  NSString *myStringvariable ;

.m 文件将是

@synthesise myStringvariable ;


-(void)init{

 myStringvariable  = @"";

}

-(void)dealloc{

 [myStringvariable  release];
 myStringvariable  = nil;
}

检查一下..这个结构不会显示内存泄漏.

Check it.. this structure will not show memory leak.

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