iOS 开发中遇到的问题总结

Launch 图片加载不出来

• 1.查看图片尺寸是否正确,是否添加约束
• 2.检查TARGETS → General → App Icons and Launch Images 下 Launch Screen File 设置是否是LaunchScreen这个同名的storyboard文件
• 3.图片资源不能放置在Assets.xcasset文件夹中,要直接拖拽到项目目录下
• 4.卸载跑好的旧的app.重新command+R

iOS Button文本左对齐

无效

searchBtn.contentMode = UIViewContentModeLeft;
searchBtn.imageView.contentMode = UIVieContentModeLeft;
searchBtn.titleLabel.contentMode = UIViewContentModeLeft;

有效

searchBtn.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
searchBtn.titleEdgeInsets = UIEdgeInsetsMake(0, 10, 0, 0);

ios设置字体倾斜

CGAffineTransform matrix =CGAffineTransformMake(1, 0, tanf(5 * (CGFloat)M_PI / 180), 1, 0, 0);//设置反射。倾斜角度。
UIFontDescriptor *desc = [ UIFontDescriptor fontDescriptorWithName :[UIFont systemFontOfSize:14].fontName matrix :matrix];//取得系统字符并设置反射。
self.serveNameLab.font = [ UIFont fontWithDescriptor :desc size :14];

{{o.name}}

{{m.name}}