类似于Instagram的强制触摸弹出模式 [英] Instagram-like force touch popup modal

问题描述

我正在尝试在其中复制Instagram的强制触摸功能

I'm trying to replicate force touch functionality of Instagram where

1)将手指放在图像上，图像会变得更暗(悬停效果，简单)

1) Put your finger on an image and it gets a little darker (hover effect, easy)

2)稍微按一下，将显示内容的弹出模式预览

2) Press a little harder and a popup modal preview of the content appears

3)更加用力按下，将模式扩展到全屏

3) Press even harder and it expands the modal to full screen

我在使用Ionic 4/Cordova"3d touch"插件时遇到问题，如果我先常规触摸屏幕，该插件不会注册强制触摸.

I'm having problems with Ionic 4/Cordova "3d touch" plugin where it doesn't register the force-touch if I regular-touch the screen first.

按顺序来说，通过threeDeeTouch.watchForceTouches()

为了让听众触发，我必须先用力进入触摸，在触摸"屏幕和按下"屏幕之间没有延迟.如果我触摸屏幕但不按屏幕，则无法在不先抬起手指的情况下再按它来触发强制触摸.

In order for the listener to trigger I have to go into the touch with force initially, with no delay between "touching" the screen and "pressing" the screen. If I touch the screen but do not press it, I can no longer press it to trigger force touch without lifting my finger first.

我正在真实的设备iPhone X上进行测试

I'm testing on a real device, iPhone X

如何解决此问题以在Instagram中复制强制触摸?

How is it possible to workaround this issue to replicate the force touch in Instagram?

推荐答案

我也在离子Cordova应用程序中尝试过相同的方法，请尝试在下面查看此内容以进行进一步的处理

Me too tried the same in ionic cordova application , try to view this below for further proceed

watchForceTouches()::当用户强行触摸Web视图时，您会收到一条通知.当最大力的至少75％施加到屏幕时，该插件将定义一个力触.您的应用将收到x和y坐标，因此您必须确定触摸了哪个UI元素.

watchForceTouches() : You can get a notification when the user force touches the webview. The plugin defines a Force Touch when at least 75% of the maximum force is applied to the screen. Your app will receive the x and y coordinates, so you have to figure out which UI element was touched.

我已经尝试过这种语法，并通过将插件版本以及下面的代码集降级来实现它

i Have tried this syntax and have achieved it by downgrading the plugin version along with below codeset

    @implementation ForceTouchRecognizer

double lastEvent = 0;

- (void) touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
    for (UITouch* touch in touches) {
        CGFloat percentage = (touch.force / touch.maximumPossibleForce) * 100;
        if (percentage >= 75) {
            // let's not flood the callback with multiple hits within the same second
            NSTimeInterval ts = touch.timestamp;
            int diff = ts - lastEvent;
            if (diff > 0) {
                lastEvent = ts;
                CGPoint coordinates = [touch locationInView:self.view];
                NSMutableDictionary *result = [[NSMutableDictionary alloc] initWithObjectsAndKeys:
                                               [NSString stringWithFormat:@"%d", (int)percentage]   , @"force",
                                               [NSString stringWithFormat:@"%d", (int)coordinates.x], @"x",
                                               [NSString stringWithFormat:@"%d", (int)coordinates.y], @"y",
                                               // no need to use the touch.timestamp really since it's simply 'now'
                                               [NSString stringWithFormat:@"%f", [[NSDate date] timeIntervalSince1970]], @"timestamp",
                                               nil];

                CDVPluginResult *pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK messageAsDictionary:result];
                pluginResult.keepCallback = [NSNumber numberWithBool:YES];
                [_commandDelegate sendPluginResult:pluginResult callbackId:_callbackId];
            }
        }
    }
}
@end

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