文本右侧对齐

NSMutableParagraphStyle * paragraphStyle = [[NSMutableParagraphStyle alloc] init];
paragraphStyle.lineSpacing = 0.0f;
paragraphStyle.alignment = NSTextAlignmentJustified;
paragraphStyle.lineBreakMode = NSLineBreakByWordWrapping;
 NSMutableAttributedString * attributedStringM = [[NSMutableAttributedString alloc] initWithString:text attributes:@{NSParagraphStyleAttributeName : paragraphStyle,NSFontAttributeName : [UIFont systemFontOfSize:16.0f]}];
					    
UITextView * textView = [[UITextView alloc] initWithFrame:CGRectMake(10, 20, CGRectGetWidth(self.view.frame) - 20, CGRectGetHeight(self.view.frame) - 20)];
textView.attributedText = attributedStringM;
textView.editable = NO;
[self.view addSubview:textView];