NSMutableArray * val;
val = [[NSMutableArray alloc] initWithCapacity:15];
/*int outlineWidth = barOutlineWidth;
int outlineHalfWidth = (outlineWidth > 1) ? outlineWidth * 0.5f : 0;
*/
for ( Bar * obj in values )
{
// calcualte the bar size
float value = [obj value];
float scale = ( value / maxValue );
// shift the bar to the top or bottom of the render line
int pointY = lineHeight + ( (lineWidth * 0.5f) * ( ( value >= 0.0f ) ? -1 : 1 ) );
int barHeight = height * scale;
NSLog(@"%d", barHeight);
CGRect barRect = CGRectMake(pointX, pointY, width, -barHeight);
[val addObject:[NSNumber numberWithInt:barHeight]];
NSLog(@"%d", val);
I want to add the barheight (int) into array val. Is this possible? while running the code,
session started at 2010-09-16 13:21:50 +0530.]
2010-09-16 13:21:53.791 BarGraphSample[3168:20b] 78
2010-09-16 13:21:53.797 BarGraphSample[3168:20b] 69398112
2010-09-16 13:21:53.807 BarGraphSample[3168:20b] 235
2010-09-16 13:21:53.812 BarGraphSample[3168:20b] 69398112
2010-09-16 13:21:53.813 BarGraphSample[3168:20b] 156
2010-09-16 13:21:53.814 BarGraphSample[3168:20b] 69398112
this is the output.
Here the actual barheights are 78,235,156, while printing the array val.
Im getting like values like "69398112"
What should I do?
You can only add pointers to objects to an NSMutableArray
. If you use the NSNumber
class though to wrap your integer, you should then be able to add that to the array.
int x = 10;
NSNumber* xWrapped = [NSNumber numberWithInt:x];
NSMutableArray* array = [[NSMutableArray alloc] initWithCapacity:15];
[array addObject:xWrapped];
int xOut = [[array lastObject] intValue]; //xOut == x;
Hope this helps.
Add a number instead.
NSNumber* foo = [NSNumber numberWithInteger:42];
or using boxed literals:
NSNumber* foo = @(42);
then add foo.
将Int转换为NSNumber,然后添加到您的数组
The issue is with your NSLog
string namely
NSLog(@"%d", val);
%d
is in fact the format specifier for an integer (int)
. You are passing it a NSMutableArray object.
Change the NSLog
to
NSLog(@"%@", val);
The %@
expects an object, and this will typically print out [myObject description]
, in this case a description of your val array.
This is a simple way: @(yourInt)
int value = 5;
NSMutableArray * anArray = [[NSMutableArray alloc] init];
[anArray addObject: @(value)];
more information about at-compiler-directives
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