IOS Learning Record

• Expression arrangement

mjviewcontroller.m//01-Emoji////Created by Apple on 13-11-24.//Copyright (c) 2013 itcast. All rights reserved.//#import "MJViewController.h"/* 1.adjust .... method to remove the 2nd parameter----add: (BOOL) Add (Cannot add global variable or member variable) 2. Add a "+" button to the end of the expression, adding a button to add an emoticon (emoticon image random) */#define KIMGWH 50#define Kinitcount 13@interface Mjviewcontroller () @end @implementation Mjviewcontroller#pragma Mark Controller's view is loaded once-(void)        viewdidload {[Super viewdidload]; [Self adjustimageposwithcolumns:2 add:yes];} #pragma mark to adjust the position of the picture-(void) Adjustimageposwithcolumns: (int) columns add: (BOOL) Add {//1. Define number of columns, spacing//3 columns per row//#warning varies    Sample//int columns = 3; spacing between each expression = (Controller view width-Number of columns * expression width)/(Number of columns + 1) cgfloat margin = (Self.view.frame.size.width-columns * Kimgwh)/        (columns + 1);    2. Define the position of the first expression//the Y-value of the first expression cgfloat Oney = 100;        The first expression x value cgfloat OneX = margin;        3. Create all emoticons for (int i = 0; i < Kinitcount; i++) {//I this position corresponds to the number of columns int col = i% columns; I ThisThe number of rows corresponding to an int row = I/columns;        The number of columns (COL) determines x cgfloat x = OneX + col * (Kimgwh + margin);        The number of rows (row) determines y cgfloat y = oney + row * (Kimgwh + margin); #warning not the same if (add) {//Add new ImageView int no = i% 9;//no = [0, 8] nsstring *imgname            = [NSString stringwithformat:@ "01%d.png", no];        [Self addimg:imgname x:x y:y];            } else {//Remove the old ImageView settings x, y//Take out the corresponding ImageView for the i + 1 position, set X, Y value//+ 1 to skip the front Uisegmentcontrol            UIView *child = self.view.subviews[i + 1];            Remove frame CGRect Tempf = child.frame;            Modify x, y Tempf.origin = Cgpointmake (x, y);        Re-assignment child.frame = Tempf; }}} #pragma mark add emoji icon: Emoji image name-(void) Addimg: (NSString *) icon x: (cgfloat) x y: (cgfloat) y {uiimageview *one = [[UII    Mageview alloc] init];    One.image = [UIImage Imagenamed:icon]; One.frame = CGRectMake (x, Y, Kimgwh, KIMGWH); [Self.view Addsubview:one];}    #pragma mark to change the number of columns of the expression-(ibaction) Indexchange: (Uisegmentedcontrol *) Sender {[UIView beginanimations:nil context:nil];        [UIView setanimationduration:0.5];    int columns = Sender.selectedsegmentindex + 2;        [Self adjustimageposwithcolumns:columns add:no]; [UIView commitanimations];} @end

　　

IOS Learning Record