Android程序开发之给背景图加上移动的手势

一，工程图。

二，效果图。

三，代码。

rootviewcontroller.h

#import <uikit/uikit.h>
@interface rootviewcontroller : uiviewcontroller
<uigesturerecognizerdelegate>
@end

rootviewcontroller.m

#import "rootviewcontroller.h"
@interface rootviewcontroller ()
@end
@implementation rootviewcontroller
- (id)initwithnibname:(nsstring *)nibnameornil bundle:(nsbundle *)nibbundleornil
{
self = [super initwithnibname:nibnameornil bundle:nibbundleornil];
if (self) {
// custom initialization
}
return self;
}
- (void)viewdidload
{
[super viewdidload];
// do any additional setup after loading the view.
//增加背景图
[self addview];
}
#pragma -mark -functions
//背景图
-(void)addview
{
//红色的背景图
uiview *parentview=[[uiview alloc]initwithframe:cgrectmake(50, 100, 200, 200)];
parentview.backgroundcolor=[uicolor redcolor];
[self.view addsubview:parentview];
[parentview setuserinteractionenabled:yes];
//移动的手势
uipangesturerecognizer *panrcognize=[[uipangesturerecognizer alloc] initwithtarget:self action:@selector(handlepan:)];
panrcognize.delegate=self;
[panrcognize setenabled:yes];
[panrcognize delaystouchesended];
[panrcognize cancelstouchesinview];
[parentview addgesturerecognizer:panrcognize];
}
#pragma uigesturerecognizer handles
- (void)handlepan:(uipangesturerecognizer *)recognizer {
nslog(@"--移动的手势-----");
}
- (void)didreceivememorywarning
{
[super didreceivememorywarning];
// dispose of any resources that can be recreated.
}

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