2013-07-17 163 views
0

我使用下面的代碼來顯示音頻可視化的顏色,它基本上顯示2條一個左輸入和一個右輸入,這些做工精細,但我想知道是否有什麼辦法改變矩形的顏色,只是峯值功率會變成紅色,例如正常值仍然是綠色條紋?這是我的代碼。更改CGContextFillRect根據大小

- (void)drawRect:(CGRect)rect { 

CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
CGContextFillRect(context, CGRectMake(15.0, 10.0, kMeterViewFullWidth * leftValue, 15.0)); 
CGContextFillRect(context, CGRectMake(15.0, 35.0, kMeterViewFullWidth * rightValue, 15.0)); 
} else { 
    CGContextFillRect(context, CGRectMake(15.0, 10.0, kMeterViewFullWidthiPad * leftValue, 15.0)); 
    CGContextFillRect(context, CGRectMake(15.0, 35.0, kMeterViewFullWidthiPad * rightValue, 15.0)); 
} 
CGContextFlush(context); 
} 

回答

1

我設法做什麼,我需要使用下面的代碼,有很多的if語句,但它的工作原理,希望這將幫助其他人需要它

- (void)drawRect:(CGRect)rect { 
// Drawing code 
[[UIColor greenColor] set]; 
[@"L" drawInRect:CGRectMake(0.0, 10.0, 10.0, 15.0) withFont:[UIFont boldSystemFontOfSize:[UIFont systemFontSize]] lineBreakMode:UILineBreakModeWordWrap alignment:UITextAlignmentCenter]; 
[@"R" drawInRect:CGRectMake(0.0, 35.0, 10.0, 15.0) withFont:[UIFont boldSystemFontOfSize:[UIFont systemFontSize]] lineBreakMode:UILineBreakModeWordWrap alignment:UITextAlignmentCenter]; 

CGRect tempLeftRect = CGRectMake(15, 10, kMeterViewFullWidth * leftValue, 15.0); 
NSLog(@"%f", tempLeftRect.size.width); 
CGRect tempRightRect = CGRectMake(15, 10, kMeterViewFullWidth * leftValue, 15.0); 
NSLog(@"%f", tempRightRect.size.width); 

if (tempLeftRect.size.width > 0) { 
    [self firstLeftBar]; 
} 
if (tempLeftRect.size.width > 27) { 
    [self secondLeftBar]; 
} 
if (tempLeftRect.size.width > 39) { 
    [self thirdLeftBar]; 
} 
if (tempLeftRect.size.width > 51) { 
    [self forthLeftBar]; 
} 
if (tempLeftRect.size.width > 63) { 
    [self fitfhLeftBar]; 
} 
if (tempLeftRect.size.width > 75) { 
    [self sixthLeftBar]; 
} 
if (tempLeftRect.size.width > 87) { 
    [self seventhLeftBar]; 
} 
if (tempLeftRect.size.width > 99) { 
    [self eigthLeftBar]; 
} 
if (tempLeftRect.size.width > 111) { 
    [self ninthLeftBar]; 
} 
if (tempLeftRect.size.width > 123) { 
    [self tenthLeftBar]; 
} 
if (tempLeftRect.size.width > 135) { 
    [self eleventhLeftBar]; 
} 
if (tempLeftRect.size.width > 147) { 
    [self twelthLeftBar]; 
} 
if (tempLeftRect.size.width > 159) { 
    [self thirteenthLeftBar]; 
} 
if (tempLeftRect.size.width > 171) { 
    [self forteenthLeftBar]; 
} 
if (tempLeftRect.size.width > 183) { 
    [self fitfhteenthLeftBar]; 
} 
if (tempLeftRect.size.width > 195) { 
    [self sixteenthLeftBar]; 
} 
if (tempLeftRect.size.width > 207) { 
    [self seventeenthLeftBar]; 
} 
if (tempLeftRect.size.width > 219) { 
    [self eighteenthLeftBar]; 
} 
if (tempLeftRect.size.width > 231) { 
    [self nineteenthLeftBar]; 
} 
if (tempLeftRect.size.width > 243) { 
    [self twentyethLeftBar]; 
} 

if (tempRightRect.size.width > 0) { 
    [self firstRightBar]; 
} 
if (tempRightRect.size.width > 27) { 
    [self secondRightBar]; 
} 
if (tempRightRect.size.width > 39) { 
    [self thirdRightBar]; 
} 
if (tempRightRect.size.width > 51) { 
    [self forthRightBar]; 
} 
if (tempRightRect.size.width > 63) { 
    [self fitfhRightBar]; 
} 
if (tempRightRect.size.width > 75) { 
    [self sixthRightBar]; 
} 
if (tempRightRect.size.width > 87) { 
    [self seventhRightBar]; 
} 
if (tempRightRect.size.width > 99) { 
    [self eigthRightBar]; 
} 
if (tempRightRect.size.width > 111) { 
    [self ninthRightBar]; 
} 
if (tempRightRect.size.width > 123) { 
    [self tenthRightBar]; 
} 
if (tempRightRect.size.width > 135) { 
    [self eleventhRightBar]; 
} 
if (tempRightRect.size.width > 147) { 
    [self twelthRightBar]; 
} 
if (tempRightRect.size.width > 159) { 
    [self thirteenthRightBar]; 
} 
if (tempRightRect.size.width > 171) { 
    [self forteenthRightBar]; 
} 
if (tempRightRect.size.width > 183) { 
    [self fitfhteenthRightBar]; 
} 
if (tempRightRect.size.width > 195) { 
    [self sixteenthRightBar]; 
} 
if (tempRightRect.size.width > 207) { 
    [self seventeenthRightBar]; 
} 
if (tempRightRect.size.width > 219) { 
    [self eighteenthRightBar]; 
} 
if (tempRightRect.size.width > 231) { 
    [self nineteenthRightBar]; 
} 
if (tempRightRect.size.width > 243) { 
    [self twentyethRightBar]; 
} 



/* 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
CGContextFillRect(context, CGRectMake(15.0, 10.0, kMeterViewFullWidth * leftValue, 15.0)); 
CGContextFillRect(context, CGRectMake(15.0, 35.0, kMeterViewFullWidth * rightValue, 15.0)); 
} else { 
    CGContextFillRect(context, CGRectMake(15.0, 10.0, kMeterViewFullWidthiPad * leftValue, 15.0)); 
    CGContextFillRect(context, CGRectMake(15.0, 35.0, kMeterViewFullWidthiPad * rightValue, 15.0)); 
} 
CGContextFlush(context); 
*/ 
} 


- (void)updateMeterWithLeftValue:(CGFloat)left rightValue:(CGFloat)right { 
leftValue = left; 
rightValue = right; 
[self setNeedsDisplay]; 
} 

-(void)firstLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(15.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)secondLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(27.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)thirdLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(39.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)forthLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(51.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)fitfhLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(63.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)sixthLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(75.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)seventhLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(87.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)eigthLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(99.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)ninthLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(111.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)tenthLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(123.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)eleventhLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(135.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)twelthLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(147.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)thirteenthLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(159.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)forteenthLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(171.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)fitfhteenthLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(183.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)sixteenthLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor redColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(195.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)seventeenthLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor redColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(207.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)eighteenthLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor redColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(219.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)nineteenthLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor redColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(231.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)twentyethLeftBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor redColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(243.0, 10.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)firstRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(15.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)secondRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(27.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)thirdRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(39.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)forthRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(51.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)fitfhRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(63.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)sixthRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(75.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)seventhRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(87.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)eigthRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(99.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)ninthRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(111.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)tenthRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(123.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)eleventhRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(135.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)twelthRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(147.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)thirteenthRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(159.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)forteenthRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(171.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)fitfhteenthRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor greenColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(183.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)sixteenthRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor redColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(195.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)seventeenthRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor redColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(207.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)eighteenthRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor redColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(219.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)nineteenthRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor redColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(231.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 

-(void)twentyethRightBar{ 
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, [UIColor redColor].CGColor); 
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){ 
    CGContextFillRect(context, CGRectMake(243.0, 35.0, 9.0, 15.0)); 
} 
CGContextFlush(context); 
} 
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