WEEX遇到的问题，源码改动备注 (二)

1. weex SDK中Slider，ScrollView等滚动视图上进度条滑动冲突

• 创建scrollview子类

//fml fix

@interface FMLScrollView : UIScrollView
@end

@implementation FMLScrollView

- (instancetype)init
{
    self = [super init];
    if (self) {
       
    }
    return self;
}

- (BOOL)touchesShouldCancelInContentView:(UIView *)view {
    if ([view isKindOfClass:NSClassFromString(@"FMLPlayerSliderView")] || [view isKindOfClass:NSClassFromString(@"HVMPBottomView")]) {
        return NO;
    }
    return YES;
}

- (BOOL)touchesShouldBegin:(NSSet *)touches withEvent:(nullable UIEvent *)event inContentView:(UIView *)view
{
    if ([view isKindOfClass:NSClassFromString(@"FMLPlayerSliderView")]) {
        return NO;
    }
    else {
        return YES;
    }
}

@end

• 设置scrollview的两个属性：// self.canCancelContentTouches = YES; self.delaysContentTouches = NO;

• 在slider视图中添加pan手势

- (void)panAction:(UIPanGestureRecognizer *)pan {
    if (self.duration <= 0.1 || isnan(self.duration)) {
        return;
    }
    
    BOOL _canLeft = YES;
    BOOL _canRight = YES;
    
    //点相对于上一个点的位置
    CGPoint moviePoint = [pan translationInView:pan.view];
    
    CGFloat curY = pan.view.center.x + moviePoint.x;
    
    //侧滑的范围
    CGFloat instance = self.frame.size.width;
    
    if (pan.view.frame.origin.x <= 0 && moviePoint.x <= 0) {
        //禁止左划的情况(在最左边时)
        _canLeft = NO;
    }
    if (pan.view.frame.origin.x >= (instance - _leftWidth - _rightWidth) && moviePoint.x >= 0) {
        //禁止右划得情况(在最右边时)
        _canRight = NO;
    }
    if (_canLeft & _canRight){
        //移动
        if (curY <= _leftWidth) {
            pan.view.center = CGPointMake(_leftWidth, pan.view.center.y);
        }
        else if (curY >= (instance - _rightWidth)) {
            pan.view.center = CGPointMake(instance - _rightWidth, pan.view.center.y);
        }
        else {
            pan.view.center = CGPointMake(pan.view.center.x + moviePoint.x, pan.view.center.y);
        }
    }
    
    //每次都需要复位
    [pan setTranslation:CGPointZero inView:pan.view];
    
    //松开手指时判断滑动趋势让其归位
    if (pan.state == UIGestureRecognizerStateBegan) {
        if ([self.delegate respondsToSelector:@selector(sliderSeekBeginWithDuration:)]) {
            [self.delegate sliderSeekBeginWithDuration:self.duration];
        }
        
        _knobHighlightImageView.hidden = NO;
        [UIView animateWithDuration:0.4 animations:^{
            _knobHighlightImageView.transform = CGAffineTransformMakeScale(1.5, 1.5);
        }];
    }
    else if (pan.state == UIGestureRecognizerStateEnded) {
        CGFloat finalTime = 0;
        if (pan.view.frame.origin.x <= 0) {
            finalTime = 0;
            
        } else if(pan.view.frame.origin.x >= (instance - _leftWidth - _rightWidth)){
            finalTime = self.duration;
        }
        else {
            CGFloat sliderWidth = self.bounds.size.width - _leftWidth - _rightWidth;
            CGFloat curPercent = (pan.view.frame.origin.x - 0) / sliderWidth;
            finalTime = curPercent * self.duration;
        }
        if ([self.delegate respondsToSelector:@selector(sliderSeekEnd:duration:)]) {
            [self.delegate sliderSeekEnd:finalTime duration:self.duration];
        }
        [UIView animateWithDuration:0.4 animations:^{
            _knobHighlightImageView.hidden = YES;
            _knobHighlightImageView.transform = CGAffineTransformIdentity;
        }];
    }
}

2. 在#import "WXThreadSafeMutableArray.h"中数组越界

// fml fix
- (id)objectAtIndex:(NSUInteger)index
{
    __block id obj;
    if (![WXUtility threadSafeCollectionUsingLock]) {
        dispatch_sync(_queue, ^{
            if (index < _array.count) {
            obj = _array[index];
            }
        });
    } else {
        if (WX_SYS_VERSION_GREATER_THAN(@"10.0")) {
            os_unfair_lock_lock(&_osUnfairLock);
            if (index < _array.count) {
                obj = _array[index];
            }
            os_unfair_lock_unlock(&_osUnfairLock);
        } else {
            pthread_mutex_lock(&_safeThreadArrayMutex);
            if (index < _array.count) {
                obj = _array[index];
            }
            pthread_mutex_unlock(&_safeThreadArrayMutex);
        }
    }
    return obj;
}

// fml fix
- (void)removeObject:(id)anObject;
{
    if (![WXUtility threadSafeCollectionUsingLock]) {
        dispatch_barrier_async(_queue, ^{
            [_array removeObject:anObject];
        });
    } else {
        if (WX_SYS_VERSION_GREATER_THAN(@"10.0")) {
            os_unfair_lock_lock(&_osUnfairLock);
            [_array removeObject:anObject];
            os_unfair_lock_unlock(&_osUnfairLock);
        } else {
            pthread_mutex_lock(&_safeThreadArrayMutex);
            [_array removeObject:anObject];
            pthread_mutex_unlock(&_safeThreadArrayMutex);
        }
    }
}

// fml fix
#pragma mark
#pragma mark - Storage Index method
- (void)updateIndexForKey:(NSString *)key {
    if ([[self indexs] containsObject:key]) {
        [[self indexs] removeObject:key];
    }
    [[self indexs] addObject:key];
    [self write:[[self indexs] copy] toFilePath:[WXStorageModule indexFilePath]];
}

- (void)removeIndexForKey:(NSString *)key {
    if ([[self indexs] containsObject:key]) {
        [[self indexs] removeObject:key];
    }
    [self write:[[self indexs] copy] toFilePath:[WXStorageModule indexFilePath]];
}