Forward iOS Advanced Development ~runtime (IV)

Replace OC with C:

#import <objc/runtime.h>

#import <objc/message.h>

#import <stdio.h>

extern int uiapplicationmain (int argc,char *argv[],void *principalclassname,void * Delegateclassname);

struct Rect {

float x;

float y;

float width;

float height;

};

typedef struct rect rect ;

void *navcontroller;

static int numberofrows =;

int tableview_numberofrowsinsection (void *receiver,structobjc_selector *selector,void *tblview, int section) {

returnnumberofrows;

}

void *tableview_cellforrowatindexpath (void *receiver,structobjc_selector *selector,void * Tblview,void *indexpath) {

class Tableviewcell = (Class)Objc_getclass ("UITableViewCell");

void *cell = class_createinstance (Tableviewcell,0);

Objc_msgsend(cell, Sel_registername("init"));

Char buffer[7];

int row = (int) objc_msgsend (Indexpath, sel_registername ("Row"));

sprintf (buffer, "row%d", row);

void *label =objc_msgsend(objc_getclass("NSString"), Sel_registername(" Stringwithutf8string: "), buffer);

Objc_msgsend(cell, Sel_registername("SetText:"), label);

return cell;

}

void Tableview_didselectrowatindexpath (void *receiver,structobjc_selector *selector,void *tblview, void *indexpath) {

class Viewcontroller = (Class)Objc_getclass ("Uiviewcontroller");

void * VC = class_createinstance (Viewcontroller,0);

Objc_msgsend(VC, Sel_registername("init"));

Char buffer[8];

int row = (int) objc_msgsend (Indexpath, sel_registername ("Row"));

sprintf (buffer, "Item%d", row);

void *label =objc_msgsend(objc_getclass("NSString"), Sel_registername(" Stringwithutf8string: "), buffer);

Objc_msgsend(VC, Sel_registername("Settitle:"), label);

objc_msgsend(navcontroller,sel_registername("pushviewcontroller:animated:"), VC, 1);

}

void *createdatasource () {

Class superclass = (class) Objc_getclass("NSObject");

Class DataSource = Objc_allocateclasspair (superclass,"DataSource",0);

Class_addmethod(DataSource,sel_registername("tableview:numberofrowsinsection:"), (void (*)) tableview_numberofrowsinsection,nil);

Class_addmethod(DataSource,sel_registername("Tableview:cellforrowatindexpath:"), ( void(*))Tableview_cellforrowatindexpath,nil);

Objc_registerclasspair(DataSource);

returnclass_createinstance(DataSource,0);

}

void * CreateDelegate () {

Class superclass = (class) Objc_getclass("NSObject");

Class DataSource = Objc_allocateclasspair (superclass,"Delegate",0);

Class_addmethod(DataSource,sel_registername("Tableview:didselectrowatindexpath:"), ( void(*))Tableview_didselectrowatindexpath,nil);

Objc_registerclasspair(DataSource);

returnclass_createinstance(DataSource,0);

}

void applicationdidfinishlaunching (void *receiver,structobjc_selector *selector,void *application) {

class Windowclass = (Class)Objc_getclass ("UIWindow");

void * Windowinstance = class_createinstance (Windowclass, 0);

objc_msgsend (windowinstance, sel_registername ("initWithFrame:"), (Rect) {0,0, (480});

Make Key and Visiable

Objc_msgsend(windowinstance,sel_registername("makekeyandvisible"));

Create Table View

class Tableviewcontroller = (Class)Objc_getclass ("Uitableviewcontroller");

void *tableviewcontroller = class_createinstance (Tableviewcontroller, 0);

objc_msgsend (Tableviewcontroller, sel_registername ("Init"));

void *tableview = objc_msgsend (tableviewcontroller,sel_registername ("TableView"));

Objc_msgsend(TableView, Sel_registername("Setdatasource:"),CreateDataSource());

Objc_msgsend(TableView, Sel_registername("setdelegate:"),createdelegate());

class Navcontroller = (Class)Objc_getclass ("Uinavigationcontroller");

Navcontroller = class_createinstance (Navcontroller,0);

objc_msgsend (navcontroller,sel_registername ("Initwithrootviewcontroller:"), Tableviewcontroller);

void *view =objc_msgsend(navcontroller, Sel_registername("View"));

Add Table View to Window

objc_msgsend (windowinstance, sel_registername ("Addsubview:"), view);

}

Create an class named "Appdelegate", and return it's name as an instance of class NSString

void *createappdelegate () {

Class MySubClass = Objc_allocateclasspair((Class) objc_getclass("NSObject")," Appdelegate ",0);

structobjc_selector *selname =sel_registername("application:didfinishlaunchingwithoptions:") ;

Class_addmethod (MySubClass, Selname, (Void (*))applicationdidfinishlaunching,nil);

Objc_registerclasspair(mysubclass);

returnobjc_msgsend(objc_getclass("NSString"),sel_registername(" Stringwithutf8string: ")," Appdelegate ");

}

int main (int argc, char *argv[]) {

returnuiapplicationmain(argc, argv,0, Createappdelegate());

}

Operating effect:

IOS Advanced Development ~Runtime(i)

http://blog.csdn.net/zfpp25_/article/details/9496705

IOS Advanced Development ~Runtime(ii)

http://blog.csdn.net/zfpp25_/article/details/9497187

IOS Advanced Development ~Runtime(iii)

http://blog.csdn.net/zfpp25_/article/details/9497721

IOS Advanced Development ~Runtime(iv)

http://blog.csdn.net/zfpp25_/article/details/9498233

Forward iOS Advanced Development ~runtime (IV)