Problem and Solution Code Snippets

標籤：

(積累知識，遇到發展，本文僅用於備忘錄，不時它需要召回準備)

Problem：

依據String的大小來調整Label的frame。在view中又一次更新views的layout並顯示。

Solution Code Snippets：

-(void)updateData{    self.view.layer.cornerRadius=10.0;    [HYGlobalFunction setTTLabelText:@"二維碼內容test" withParent:self.view withTag:1002 withClass:_StoreText_ withLineNum:1 withURL:NO withLeading:0.0];    TTTAttributedLabel_HY *labelView= (TTTAttributedLabel_HY*)[self.view viewWithTag:1001];    [HYGlobalFunction setTTLabelText:self.description withParent:self.view withTag:1001 withClass:_Arial14Color102New_ withLineNum:0 withURL:NO withLeading:1.0];    labelView.delegate=self;    CGRect frame=labelView.frame;    CGFloat height = 0;    if([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad)        height=40 +ceilf([self.description sizeWithFont:[UIFont boldSystemFontOfSize:19] constrainedToSize:CGSizeMake(frame.size.width, CGFLOAT_MAX) lineBreakMode:UILineBreakModeWordWrap].height);    else        height=20 +ceilf([self.description sizeWithFont:[UIFont boldSystemFontOfSize:15] constrainedToSize:CGSizeMake(frame.size.width, CGFLOAT_MAX) lineBreakMode:UILineBreakModeWordWrap].height);    frame=CGRectMake(frame.origin.x, frame.origin.y, frame.size.width, height);    labelView.frame=frame;    self.view.hidden=YES;    [self changeSuperViewToHeight:height];    [self.view setNeedsDisplay];}-(void)changeSuperViewToHeight:(CGFloat)height{    CGRect oldFrame = self.view.frame;    CGFloat newHeight = 0;    if([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad){        newHeight = height+40;        if(newHeight < oldFrame.size.height)            newHeight = oldFrame.size.height;    }else        newHeight = height+20;    CGRect newFrame = CGRectMake(oldFrame.origin.x, CGRectGetMidY(oldFrame)-newHeight/2, oldFrame.size.width, newHeight);    self.view.frame = newFrame;}

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Problem and Solution Code Snippets