引入G_FrameParserConfig.h和G_WaterMark.h 
//配置水印参数
G_FrameParserConfig *config = [[G_FrameParserConfig alloc] init];
 //行间距
config.lineSpace = 40; 
 //字体颜色
config.textColor = [UIColor whiteColor]; 

//字体大小
config.fontSize = 22; 

//每个run间距大小 包含图片宽度
config.spaceSize = 80;

//透明度
config.opaque = 0.3;

UIImageView *imageView = [[UIImageView alloc]initWithFrame:CGRectMake(20, 100, 340, 480)];
imageView.image = [G_WaterMark addWatermarkWithImg:[UIImage imageNamed:@"bgImg.jpg"] imageViewSize:imageView.frame.size text:@"胖子"attribute:config waterImage:[UIImage imageNamed:@"newMenu"]];
[self.view addSubview:imageView];