手勢識別器

注意要把物件imageview的互動開了

// 建立乙個imageview 新增手勢用

uiimage *image = [uiimage imagenamed:@"selected"];
uiimageview *imageview = [[uiimageview alloc] initwithframe:[uiscreen mainscreen].bounds];
imageview.image = image;
imageview.userinteractionenabled = yes;
[self
.view addsubview:imageview];
[imageview release];

手勢類 uigesturerecognizer

這個類是個抽象類 其具體功能 交給子類去實現

抽象類就是省**的類

// 初始化乙個輕拍手勢的物件

uitapgesturerecognizer *tap = [[uitapgesturerecognizer alloc] initwithtarget:self action:@selector(tapaction:)];
// 新增手勢到檢視上
[imageview addgesturerecognizer:tap];
// 釋放
[tap release];

// 實現輕拍方法

- (void)tapaction:(uitapgesturerecognizer *)tap

// 長按

// 新增手勢步驟
// 1. 初始化手勢 新增手勢觸發呼叫的方法
// 2. 把手勢新增到檢視上
// 3. 釋放手勢
uilongpressgesturerecognizer *longpress = [[uilongpressgesturerecognizer alloc] initwithtarget:self action:@selector(longpressaction:)];
// 設定長按時間
longpress.minimumpressduration = 2.0;
[imageview addgesturerecognizer:longpress];
[longpress release];

// 實現長按手勢

- (void)longpressaction:(uilongpressgesturerecognizer *)longpress
}

uirotationgesturerecognizer *rotation = [[uirotationgesturerecognizer alloc] initwithtarget:

self
action:
@selector(rotationaciton:)];
[imageview addgesturerecognizer:rotation];
[rotation release];

// 實現旋轉手勢

- (void)rotationaciton:(uirotationgesturerecognizer *)rotation

uipinchgesturerecognizer *pinch = [[uipinchgesturerecognizer alloc] initwithtarget:

self
action:
@selector(pinchaciton:)];
[imageview addgesturerecognizer:pinch];
[pinch release];

// 實現捏合收拾方法

- (void)pinchaciton:(uipinchgesturerecognizer *)pinch

uipangesturerecognizer *pan = [[uipangesturerecognizer alloc] initwithtarget:

self
action:
@selector(panaction:)];
[imageview addgesturerecognizer:pan];
[pan release];

// 實現平移方法

- (void)panaction:(uipangesturerecognizer *)pan

uiswipegesturerecognizer *swipe = [[uiswipegesturerecognizer alloc] initwithtarget:

self
action:
@selector(swipeaction:)];
swipe.direction = uiswipegesturerecognizerdirectionleft;
[imageview addgesturerecognizer:swipe];
[swipe release];

// 實現輕掃方法

- (void)swipeaction:(uiswipegesturerecognizer *)swipe

uiscreenedgepangesturerecognizer *screenedgepan = [[uiscreenedgepangesturerecognizer alloc] initwithtarget:

self
action:
@selector(screenedgepanaction:)];
// 設定下從哪個邊緣開始掃
screenedgepan.edges = uirectedgeright;
[imageview addgesturerecognizer:screenedgepan];
[screenedgepan release];

// 實現邊緣掃

- (void)screenedgepanaction:(uiscreenedgepangesturerecognizer *)screenedgepan

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