cordova - 类似 Instagram 的强制触摸弹出模式

Question

我正在尝试复制 Instagram 的强制触摸功能，其中

1)将手指放在图像上，图像会变暗(悬停效果，简单)

2)稍微用力按下，就会出现内容的弹出模式预览

3)用力按压，模式将扩展到全屏

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，它不会注册强制触摸。

换言之，通过 thirdDeeTouch.watchForceTouches() 监听时，上述步骤 2 不会触发强制触摸

为了让听者触发，我必须首先用力进行触摸，在“触摸”屏幕和“按下”屏幕之间没有任何延迟。如果我触摸屏幕但没有按下它，我将无法再在不先抬起手指的情况下按下它来触发强制触摸。

我正在真实设备 iPhone X 上进行测试

如何解决此问题以在 Instagram 中复制强制触摸？

Answer 1

我也在 ionic cordova 应用程序中尝试了相同的操作，请尝试查看下面的内容以进一步进行

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，并通过降级插件版本以及以下代码集来实现它

    @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