关于c语言的打破循环,如何在Objective-C中打破块循环？

rmaddy..

9

看看文档NSArray enumerateObjectsUsingBlock:.他们设置块签名以获取BOOL指针.将stop BOOL设置为YES以使迭代停止.

typedef void (^loopCell)(id cell, BOOL *stop);

-(id)allCells:(loopCell)cell {

BOOL stop = NO;

for (AAFormSection *section in listSections) {

for (id _cell in section.fields) {

cell(_cell, &stop);

if (stop) {

break;

}

}

if (stop) {

break;

}

}

return nil;

}

-(void)setFieldValue:(NSString *)value withID:(int)rowID {

[self allCells:^(id cell, BOOL *stop) {

if([cell isKindOfClass:[AAFormField class]]) {

AAFormField *_cell = (AAFormField *)cell;

if(_cell.rowID == rowID) {

_cell.value = value;

if (stop) {

*stop = YES;

}

}

}

}];

}