在iphonesdk中从Plist加载绘制线
我正在保存绘制线x和y位置，以便从触摸移动事件中Plist，代码如下：在iphonesdk中从Plist加载绘制线,iphone,ios,Iphone,Ios,我正在保存绘制线x和y位置，以便从触摸移动事件中Plist，代码如下： - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { mouseSwiped = YES; NSLog(@"You are drawing"); UITouch *touch = [touches anyObject]; CGPoint currentPoint = [touch locationInView
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
mouseSwiped = YES;
NSLog(@"You are drawing");
UITouch *touch = [touches anyObject];
CGPoint currentPoint = [touch locationInView:self.view];
currentPoint.y -= 20;
UIGraphicsBeginImageContext(self.view.frame.size);
[drawImage.image drawInRect:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
CGContextSetLineCap(UIGraphicsGetCurrentContext(), kCGLineCapRound);
CGContextSetLineWidth(UIGraphicsGetCurrentContext(), 5.0);
CGContextSetRGBStrokeColor(UIGraphicsGetCurrentContext(), 1.0, 0.0, 1.0, 1.0);
CGContextBeginPath(UIGraphicsGetCurrentContext());
CGContextMoveToPoint(UIGraphicsGetCurrentContext(), lastPoint.x, lastPoint.y);
CGContextAddLineToPoint(UIGraphicsGetCurrentContext(), currentPoint.x, currentPoint.y);
CGContextStrokePath(UIGraphicsGetCurrentContext());
drawImage.image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSNumber *numx = [NSNumber numberWithFloat:currentPoint.x];
NSNumber *numy = [NSNumber numberWithFloat:currentPoint.y];
[xpoints insertObject:numx atIndex:[xpoints count]];
[ypoint insertObject:numy atIndex:[ypoint count]];
NSString *bundle = [[NSBundle mainBundle] pathForResource:@"Lines" ofType:@"plist"]; //5
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); //1
NSString *documentsDirectory = [paths objectAtIndex:0]; //2
path = [documentsDirectory stringByAppendingPathComponent:@"Lines.plist"];
NSMutableDictionary *data = [[NSMutableDictionary alloc] initWithContentsOfFile:path];
//here add elements to data file and write data to file
int value = [xpoints count];
[data setObject:[NSNumber numberWithInt:value] forKey:@"Array_count"];
NSString *obj_str=[NSString stringWithFormat:@"%@,%@",numx,numy];
NSString *key=[NSString stringWithFormat:@"%d",value];
[data setObject:obj_str forKey:key];
[data writeToFile:path atomically:YES];
[data release];
NSString *string = [NSString stringWithFormat:@"%f%@%f", lastPoint.x, @"-",lastPoint.y];
// NSLog(@"Hello is %i",[xpoints count]);
lblxy.text=string;
NSString *string2 = [NSString stringWithFormat:@"%f%@%f", currentPoint.x, @"-",currentPoint.y];
// NSLog(@"Hello is %i",[xpoints count]);
lbllast.text=string2;
lastPoint = currentPoint;
mouseMoved++;
if (mouseMoved == 10) {
mouseMoved = 0;
}
}
- (IBAction)btn_load:(id)sender {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); //1
NSString *documentsDirectory = [paths objectAtIndex:0]; //2
path = [documentsDirectory stringByAppendingPathComponent:@"Lines.plist"];
drawImage.image =nil;
NSMutableDictionary *data = [[NSMutableDictionary alloc] initWithContentsOfFile:path];
//here add elements to data file and write data to file
int value;
value = [[data objectForKey:@"Array_count"] intValue];
CGFloat lastx;
CGFloat lasty;
for(int i=1;i<=value;i++)
{
NSString *key=[NSString stringWithFormat:@"%d",i];
NSLog(@"This is from .plist %@", [data objectForKey:key]);
NSString *my_points=[data objectForKey:key];
NSArray *components = [my_points componentsSeparatedByString:@","];
[[components objectAtIndex:0] floatValue];
if(i==1)
{
lastx = [[components objectAtIndex:0] floatValue];
lasty = [[components objectAtIndex:1] floatValue];
}
UIGraphicsBeginImageContext(self.view.frame.size);
[drawImage.image drawInRect:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
CGContextSetLineCap(UIGraphicsGetCurrentContext(), kCGLineCapRound);
CGContextSetLineWidth(UIGraphicsGetCurrentContext(), 5.0);
CGContextSetRGBStrokeColor(UIGraphicsGetCurrentContext(), 1.0, 1.0, 1.0, 1.0);
CGContextMoveToPoint(UIGraphicsGetCurrentContext(),lastx , lasty);
CGContextAddLineToPoint(UIGraphicsGetCurrentContext(), [[components objectAtIndex:0] floatValue], [[components objectAtIndex:1] floatValue]);
CGContextStrokePath(UIGraphicsGetCurrentContext());
CGContextFlush(UIGraphicsGetCurrentContext());
drawImage.image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
lastx = [[components objectAtIndex:0] floatValue];
lasty = [[components objectAtIndex:1] floatValue];
}
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
mouseSwiped = YES;
NSLog(@"You are drawing");
UITouch *touch = [touches anyObject];
CGPoint currentPoint = [touch locationInView:self.view];
currentPoint.y -= 20;
UIGraphicsBeginImageContext(self.view.frame.size);
[drawImage.image drawInRect:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
CGContextSetLineCap(UIGraphicsGetCurrentContext(), kCGLineCapRound);
CGContextSetLineWidth(UIGraphicsGetCurrentContext(), 5.0);
CGContextSetRGBStrokeColor(UIGraphicsGetCurrentContext(), 1.0, 0.0, 1.0, 1.0);
CGContextBeginPath(UIGraphicsGetCurrentContext());
CGContextMoveToPoint(UIGraphicsGetCurrentContext(), lastPoint.x, lastPoint.y);
CGContextAddLineToPoint(UIGraphicsGetCurrentContext(), currentPoint.x, currentPoint.y);
CGContextStrokePath(UIGraphicsGetCurrentContext());
drawImage.image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSNumber *numx = [NSNumber numberWithFloat:currentPoint.x];
NSNumber *numy = [NSNumber numberWithFloat:currentPoint.y];
[xpoints insertObject:numx atIndex:[xpoints count]];
[ypoint insertObject:numy atIndex:[ypoint count]];
NSString *bundle = [[NSBundle mainBundle] pathForResource:@"Lines" ofType:@"plist"]; //5
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); //1
NSString *documentsDirectory = [paths objectAtIndex:0]; //2
path = [documentsDirectory stringByAppendingPathComponent:@"Lines.plist"];
NSMutableDictionary *data = [[NSMutableDictionary alloc] initWithContentsOfFile:path];
//here add elements to data file and write data to file
int value = [xpoints count];
[data setObject:[NSNumber numberWithInt:value] forKey:@"Array_count"];
NSString *obj_str=[NSString stringWithFormat:@"%@,%@",numx,numy];
NSString *key=[NSString stringWithFormat:@"%d",value];
[data setObject:obj_str forKey:key];
[data writeToFile:path atomically:YES];
[data release];
NSString *string = [NSString stringWithFormat:@"%f%@%f", lastPoint.x, @"-",lastPoint.y];
// NSLog(@"Hello is %i",[xpoints count]);
lblxy.text=string;
NSString *string2 = [NSString stringWithFormat:@"%f%@%f", currentPoint.x, @"-",currentPoint.y];
// NSLog(@"Hello is %i",[xpoints count]);
lbllast.text=string2;
lastPoint = currentPoint;
mouseMoved++;
if (mouseMoved == 10) {
mouseMoved = 0;
}
}
- (IBAction)btn_load:(id)sender {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); //1
NSString *documentsDirectory = [paths objectAtIndex:0]; //2
path = [documentsDirectory stringByAppendingPathComponent:@"Lines.plist"];
drawImage.image =nil;
NSMutableDictionary *data = [[NSMutableDictionary alloc] initWithContentsOfFile:path];
//here add elements to data file and write data to file
int value;
value = [[data objectForKey:@"Array_count"] intValue];
CGFloat lastx;
CGFloat lasty;
for(int i=1;i<=value;i++)
{
NSString *key=[NSString stringWithFormat:@"%d",i];
NSLog(@"This is from .plist %@", [data objectForKey:key]);
NSString *my_points=[data objectForKey:key];
NSArray *components = [my_points componentsSeparatedByString:@","];
[[components objectAtIndex:0] floatValue];
if(i==1)
{
lastx = [[components objectAtIndex:0] floatValue];
lasty = [[components objectAtIndex:1] floatValue];
}
UIGraphicsBeginImageContext(self.view.frame.size);
[drawImage.image drawInRect:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
CGContextSetLineCap(UIGraphicsGetCurrentContext(), kCGLineCapRound);
CGContextSetLineWidth(UIGraphicsGetCurrentContext(), 5.0);
CGContextSetRGBStrokeColor(UIGraphicsGetCurrentContext(), 1.0, 1.0, 1.0, 1.0);
CGContextMoveToPoint(UIGraphicsGetCurrentContext(),lastx , lasty);
CGContextAddLineToPoint(UIGraphicsGetCurrentContext(), [[components objectAtIndex:0] floatValue], [[components objectAtIndex:1] floatValue]);
CGContextStrokePath(UIGraphicsGetCurrentContext());
CGContextFlush(UIGraphicsGetCurrentContext());
drawImage.image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
lastx = [[components objectAtIndex:0] floatValue];
lasty = [[components objectAtIndex:1] floatValue];
}
}
-（iAction）btn\u加载：（id）发送方{
NSArray*path=NSSearchPathForDirectoriesInDomains（NSDocumentDirectory，NSUserDomainMask，YES）；//1
NSString*documentsDirectory=[paths objectAtIndex:0]；//2
路径=[DocumentsDirectoryStringByAppendingPathComponent:@“Lines.plist”]；
drawImage.image=nil；
NSMutableDictionary*数据=[[NSMutableDictionary alloc]initWithContentsOfFile:path]；
//在这里向数据文件添加元素并将数据写入文件
int值；
value=[[data objectForKey:@“Array_count”]intValue]；
CGX；
成形术；
对于（int i=1；i您没有保存“换行符”。属性列表可以包含数组。也许您应该收集数组中的每个“图形”。此外，您没有保存颜色。请尝试此
在touchesBegin中，您正在开始一个新的“绘图”，因此创建一个数组来保存该“绘图”的所有点。在touchMove中，添加到该数组中。在touchEnd中，您完成了该操作，因此您可以将该绘图放入文件中，然后在下一个“begin touch”中重新开始
关键是，您需要知道何时开始新的“绘图段”，以便可以“移动”点并再次开始绘图。您没有保存“换行符”。属性列表可以包含数组。也许您应该将每个“绘图”收集到一个数组中。此外，您也没有保存颜色。请尝试此
在touchesBegin中，您正在开始一个新的“绘图”，因此创建一个数组来保存该“绘图”的所有点。在touchMove中，添加到该数组中。在touchEnd中，您完成了该操作，因此您可以将该绘图放入文件中，然后在下一个“begin touch”中重新开始
关键是您需要知道何时开始新的“绘图段”，以便可以“移动”该点并再次开始绘图