iOS development--Initial knowledge

Pragram preprocessing directives

• #pragram Mark

  Code logical Chunking

Common shortcut keys

• View Document Description

  Select the API you want to view, and press and hold the option+ button:

• Comments

  CMD +/

Framework

• Masonry

  AutoLayout
  http://adad184.com/2014/09/28/use-masonry-to-quick-solve-autolayout/
  ? # # # Use note
  ? + Case
  ? Make.left.equalTo (Self.contentview). Offset (12);
  Make.top.equalTo (Self.contentview). Offset (18);
  Make.size.width.mas_equalTo (32);
  Make.size.height.mas_equalTo (32);
  Each property setting is written separately, because it is a chained syntax, and if all of the properties are configured together, the following settings override the previous setting.
  ? + Center
  Make.center >?
  ? + Vertical Center
  ?> Make.centery
  ? + Horizontal Center
  ?> Meke.centerx

Tools

• Cocoapods

  Program Dependency Management
  http://blog.devtang.com/2014/05/25/use-cocoapod-to-manage-ios-lib-dependency/

Control

• Uiimageview

  Http://blog.sina.com.cn/s/blog_9c2363ad0101e15l.html

• UITableView

  https://www.kancloud.cn/digest/ios-1/107419

  • Set Uitableviewdelegate, attempt to load delegate
  • Set Uitableviewdatasource, data binding
  • You can customize the cell, you need to inherit UITableViewCell

• Uitextview

  Similar to the EditText inside Android

• UILabel

  Text

  • Rich Text
    > HTTPS://WWW.JIANSHU.COM/P/5D24D22F99C3

• UIButton

Api

• Uifont

  Set Text font

• Uitableviewdelegate
• Uitableviewdatasource

Abnormal

• Compilation failed, symbol conflict

  Due to import. m file, resulting; import. h file after compilation succeeded;

• Unrecognized selector sent to instance

  Sent a message to the nil object

• The custom UITableViewCell is not called by UI TableView

  You need to call UITableView's RegisterClass method to register the custom cell

• Nsinternalinconsistencyexception

  Reason: ' couldn ' t find a common Superview for <UITextView:0x7fdb4d015200;
  Cause: The Addsubview method was not called to add the view to the parent view before setting the view constraint.
  Workaround: The Addsubview method that calls Parentview after the view initialization is complete;

iOS development--Initial knowledge