應用程序僅在iPhone7上崩潰：致命異常：CALayerInvalidGeometry CALayer位置包含NaN：[nan nan]

Question

我的應用程序可以在iPhone6上完美運行，但是當我在iPhone7上進行測試時，當我嘗試調整圖像點時會崩潰。

致命異常：CALayerInvalidGeometry CALayer位置包含NaN：[nan nan]

- (void)adjustPointsToFaceModel {

FaceFeatures *features = self.faceFeaturesModel.features;

CGRect featurePointsBox = [self.view featuresBoundingBox];

[self.view.featurePointsMapping enumerateKeysAndObjectsUsingBlock:^(NSNumber* key, FeaturePointView* view, BOOL *stop) {
    FaceFeaturePoint feature = key.unsignedIntegerValue;
    CGPoint pointCenter = [self.view convertPointFromImage:[features coordinatePointForFeature:feature]];

    if (pointCenter.x < CGRectGetMinX(featurePointsBox)) {
        pointCenter.x = CGRectGetMinX(featurePointsBox);
    }
    if (pointCenter.y < CGRectGetMinY(featurePointsBox)) {
        pointCenter.y = CGRectGetMinY(featurePointsBox);
    }
    if (pointCenter.x > CGRectGetMaxX(featurePointsBox)) {
        pointCenter.x = CGRectGetMaxX(featurePointsBox);
    }
    if (pointCenter.y > CGRectGetMaxY(featurePointsBox)) {
        pointCenter.y = CGRectGetMaxY(featurePointsBox);
    }
    view.center = pointCenter;
}];

[self.view layoutIfNeeded];
}

XCode說

最后異常回溯（0）

在

[self.view.featurePointsMapping enumerateKeysAndObjectsUsingBlock:^(NSNumber* key, EMFeaturePointView* view, BOOL *stop) {

花了幾個星期。 歡迎任何幫助！

Answer 1

我建議您添加一個檢查以確保featurePointsBox rect不包含任何NaN值。

請參閱以下線程： 如何在Objective-C（iphone sdk）中檢查NaN值