Question

我遇到react-native-gesture-handler的问题。每当我将react-native-gesture-handler链接到我的项目时，它就会停止工作并显示此错误。但是从我的项目取消链接react-native-gesture-handler后，应用程序可以正常工作。但是，由于需要从多个屏幕导航，因此需要手势处理程序。

首先，我认为这是react-native版本的问题，因为我使用的是react-native版本0.57.0，但是它在0.58.0和0.55.4上也不起作用。

package com.swmansion.gesturehandler.react;

import android.os.Build;
import android.view.View;
import android.view.ViewGroup;

import com.facebook.react.uimanager.PointerEvents;
import com.facebook.react.uimanager.ReactPointerEventsView;
import com.facebook.react.views.view.ReactViewGroup;
import com.swmansion.gesturehandler.PointerEventsConfig;
import com.swmansion.gesturehandler.ViewConfigurationHelper;

public class RNViewConfigurationHelper implements ViewConfigurationHelper {

  @Override
  public PointerEventsConfig getPointerEventsConfigForView(View view) {
    PointerEvents pointerEvents;
    pointerEvents = view instanceof ReactPointerEventsView ?
            ((ReactPointerEventsView) view).getPointerEvents() :
            PointerEvents.AUTO;

    // Views that are disabled should never be the target of pointer events. However, their children
    // can be because some views (SwipeRefreshLayout) use enabled but still have children that can
    // be valid targets.
    if (!view.isEnabled()) {
      if (pointerEvents == PointerEvents.AUTO) {
        return PointerEventsConfig.BOX_NONE;
      } else if (pointerEvents == PointerEvents.BOX_ONLY) {
        return PointerEventsConfig.NONE;
      }
    }

    switch (pointerEvents) {
      case BOX_ONLY: return PointerEventsConfig.BOX_ONLY;
      case BOX_NONE: return PointerEventsConfig.BOX_NONE;
      case NONE: return PointerEventsConfig.NONE;
    }

    return PointerEventsConfig.AUTO;
  }

  @Override
  public View getChildInDrawingOrderAtIndex(ViewGroup parent, int index) {
    if (parent instanceof ReactViewGroup) {
      return parent.getChildAt(((ReactViewGroup) parent).getZIndexMappedChildIndex(index));
    }
    return parent.getChildAt(index);
  }

  @Override
  public boolean isViewClippingChildren(ViewGroup view) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2 && !view.getClipChildren()) {
        if (view instanceof ReactViewGroup) {
            String overflow = ((ReactViewGroup) view).getOverflow();
            return "hidden".equals(overflow);
        }
        return false;
      }
    return true;
  }
}

Answer 1

您可以尝试手动链接。

也请检查此问题： https://github.com/kmagiera/react-native-gesture-handler/issues/205

Answer 2

如果在Android而不是iOS上遇到问题，则可能是您需要为符号添加polyfill。我不记得在哪里找到了它，但是我已经在自己的项目中使用了它，并且可以正常工作。只需将其粘贴在index.js中即可：

if (Platform.OS === 'android') {
  if (typeof Symbol === 'undefined') {
    if (Array.prototype['@@iterator'] === undefined) {
      Array.prototype['@@iterator'] = function() {
        let i = 0;
        return {
          next: () => ({
            done: i >= this.length,
            value: this[i++]
          })
        };
      };
    }
  }
}

React-native-gesture-handler遇到问题（找不到符号字符串溢出=（（（ReactViewGroup）视图）.getOverflow（）;）

2 个答案: