Question

经过大量的投入，我无法弄清楚我错过了什么。我跟随了很多与自定义标签相关的例子，但我找不到答案。可能有什么不对？非常感谢您的帮助。

自定义标签定义：

NSMutableArray *customArray = [[NSMutableArray alloc] initWithCapacity:[xcLabels count]];
int idx = 0;
for (NSNumber *tickLocation in  xcLabels) {  
    CPTAxisLabel *iLabel = [[CPTAxisLabel alloc] initWithText:[xcLabels objectAtIndex:idx++] textStyle:x.labelTextStyle];
    iLabel.tickLocation = CPTDecimalFromInt(idx);
    iLabel.offset       = x.labelOffset + x.majorTickLength;
    iLabel.rotation = M_PI/2;
    [customArray addObject:iLabel];
    [iLabel release];
}
x.axisLabels = [NSSet setWithArray:customArray];
NSLog(@"x.axisLabels%@", x.axisLabels);
[customArray release];

majorTicklocation定义：

 NSMutableArray *ticks = [[[NSMutableArray alloc] initWithCapacity:[xcLabels count]] autorelease];
for ( NSUInteger loc = 0; loc < [xcLabels count]; ++loc ) {
    [ticks addObject:[NSDecimalNumber numberWithUnsignedInteger:loc]];}
NSLog(@"tickLocations%@", ticks);
x.majorTickLocations =[NSSet setWithArray:ticks];
NSLog(@"x.majorTickLocations%@", x.majorTickLocations);

数据定义

- (void) xLabels {
xcLabels = [[NSMutableArray alloc] initWithCapacity:[self.dataGraph count]];
for (int i = 0; i < [self.dataGraph count]; ++i) {
    NSNumber* nsValue = [self.dataGraph objectAtIndex:i];
    CGPoint point = [nsValue CGPointValue];
    NSLog(@"point.x%f", point.x);
    NSDate *xFecha = [[NSDate alloc] initWithTimeIntervalSinceReferenceDate:point.x];
    NSLog(@"xFecha%@", xFecha);
    NSDateFormatter* df = [[NSDateFormatter alloc] init];
    [df setDateFormat:@"dd-MM"];
    NSString *nstFecha = [df stringFromDate:xFecha];
    [df release];
    [xcLabels addObject:nstFecha];}}

x.axisLabels输出：

x.axisLabels{(
<<CPTAxisLabel: 0x6e7c250> {<<<CPTTextLayer: 0x6e7bf60> bounds: {{0, 0}, {35, 19}}> "14-01">}>,
<<CPTAxisLabel: 0x6e7c040> {<<<CPTTextLayer: 0x6e7da30> bounds: {{0, 0}, {35, 19}}> "28-01">}>,
<<CPTAxisLabel: 0x6e7dae0> {<<<CPTTextLayer: 0x6e7db10> bounds: {{0, 0}, {35, 19}}> "14-02">}>,
<<CPTAxisLabel: 0x6e7dbc0> {<<<CPTTextLayer: 0x6e7dbf0> bounds: {{0, 0}, {35, 19}}> "25-02">}>,
<<CPTAxisLabel: 0x6e7dca0> {<<<CPTTextLayer: 0x6e7dcd0> bounds: {{0, 0}, {35, 19}}> "14-03">}>,
<<CPTAxisLabel: 0x6e7dd80> {<<<CPTTextLayer: 0x6e7ddb0> bounds: {{0, 0}, {35, 19}}> "30-03">}>,
<<CPTAxisLabel: 0x6e7de60> {<<<CPTTextLayer: 0x6e7de90> bounds: {{0, 0}, {35, 19}}> "14-04">}>,
<<CPTAxisLabel: 0x6e7df40> {<<<CPTTextLayer: 0x6e7df70> bounds: {{0, 0}, {35, 19}}> "29-04">}>,
<<CPTAxisLabel: 0x6e7e020> {<<<CPTTextLayer: 0x6e7e050> bounds: {{0, 0}, {35, 19}}> "09-05">}>,
<<CPTAxisLabel: 0x6e7e100> {<<<CPTTextLayer: 0x6e7e190> bounds: {{0, 0}, {35, 19}}> "29-08">}>,
<<CPTAxisLabel: 0x6e7e200> {<<<CPTTextLayer: 0x6e7e230> bounds: {{0, 0}, {35, 19}}> "29-09">}>,
<<CPTAxisLabel: 0x6e7e2e0> {<<<CPTTextLayer: 0x6e7e370> bounds: {{0, 0}, {35, 19}}> "27-10">}>,
<<CPTAxisLabel: 0x6e7e3e0> {<<<CPTTextLayer: 0x6e7e410> bounds: {{0, 0}, {35, 19}}> "29-11">}>,
<<CPTAxisLabel: 0x6e7e4c0> {<<<CPTTextLayer: 0x6e7e550> bounds: {{0, 0}, {35, 19}}> "28-12">}>

）}

x.majorTickLocations输出

2012-05-29 22:21:46.960 AbcPrpk[8931:fb03] x.majorTickLocations{(
0,
13,
12,
11,
7,
6,
2,
1,
10,
9,
8,
5,
4,
3
)}

Answer 1

您已将所有自定义标签的tickLocation设置为零（0）。在循环内增加idx。

Answer 2

我没有看到上面的任何代码告诉我你的标签被添加到视图树中（例如，[self addSubview：someLabel]）

您可以通过在任何标签上记录窗口属性的值来验证这是您的问题 - 如果它返回nil，那么您的视图尚未添加到视图树中。

axisLabel未显示事件majorTickLocations已设置

2 个答案: