- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath
{
//if (self.editing)
// return UITableViewCellEditingStyleDelete;
return UITableViewCellEditingStyleNone;
}
+ (UIImage *)buildImageAndDrawText:(NSString *)text size:(CGSize)size ios7:(BOOL)iOS7SDK
{
UIGraphicsBeginImageContext(size);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetRGBFillColor(context, 1, 1, 1, 1);
CGContextFillRect(context, CGRectMake(0, 0, size.width, size.height));
UIFont *font = [UIFont italicSystemFontOfSize:15];
UIColor *fontColor = [UIColor blueColor];
if (iOS7SDK) {
NSMutableParagraphStyle *paragrapStyle = [[NSMutableParagraphStyle alloc] init];
[paragrapStyle setLineBreakMode:NSLineBreakByWordWrapping];
[paragrapStyle setAlignment:NSTextAlignmentCenter];
[text drawInRect:CGRectIntegral(CGRectMake(0, size.height/2, size.width, size.height))
withAttributes:@{
NSParagraphStyleAttributeName: paragrapStyle,
NSFontAttributeName: font,
NSForegroundColorAttributeName: fontColor}
];
} else {
[fontColor set];
[text drawInRect:CGRectIntegral(CGRectMake(0, size.height/2, size.width, size.height)) withFont:font lineBreakMode:NSLineBreakByWordWrapping alignment:NSTextAlignmentCenter];
}
UIImage *outImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return outImage;
}
self.imageView = [YourClass buildImageAndDrawText:@"iOS app development @ blog.changyy.org" size:CGSizeMake(300, 300) ios7:YES];
dispatch_semaphore_t waitJobDone = dispatch_semaphore_create(0);
[self callBlock:^{
// do something
dispatch_semaphore_signal(waitJobDone);
}];
dispatch_semaphore_wait(waitJobDone, DISPATCH_TIME_FOREVER);
dispatch_async( dispatch_queue_create(“job_running”, NULL), ^{
});
dispatch_async( dispatch_queue_create("job_running", NULL), ^{
// do something ...
dispatch_async(dispatch_get_main_queue(), ^{
// update ui
});
});
- (void)dealloc
{
// do something ...
[super dealloc];
}
ARC forbids explicit message send of 'dealloc'
You may implement a dealloc method if you need to manage resources other than releasing instance variables. You do not have to (indeed you cannot) release instance variables, but you may need to invoke [systemClassInstance setDelegate:nil] on system classes and other code that isn’t compiled using ARC.
Custom dealloc methods in ARC do not require a call to [super dealloc] (it actually results in a compiler error). The chaining to super is automated and enforced by the compiler.
- (void)dealloc
{
// do something ...
}
#define kTargetDataUpdate @"TargetDataUpdate"
- (void)setupOptions:(NSNotification *)event
{
NSLog(@"event:%@, object:%@", event, event.object);
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(setupOptions:) name:kTargetDataUpdate object:nil];
}
- (void)viewWillDisappear:(BOOL)animated
{
[[NSNotificationCenter defaultCenter] removeObserver:self name: kTargetDataUpdate object:nil];
[super viewWillDisappear:animated];
}
NSDictionary *info = @{@"status":@"ok"};
[[NSNotificationCenter defaultCenter] postNotificationName: kTargetDataUpdate object:info userInfo:nil];
** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'unable to dequeue a cell with identifier myCell - must register a nib or a class for the identifier or connect a prototype cell in a storyboard'
static NSString *CellIdentifier = @"myCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
static NSString *CellIdentifier = @"myCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self.tableView registerNib:[UINib nibWithNibName:@“MyCell" bundle:nil]
forCellReuseIdentifier:@“myCell”]; // "MyCell" for MyCell.xib
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
// ...
if( cell.tag == 0 )
{
cell.tag = 1;
for (UIView *v in [cell.contentView subviews])
{
[v removeFromSuperview];
[cell.contentView addSubview:v];
}
}
return cell;
}
看來衰運未過，拿到傳說會"自動關機"的小米2s XDD 馬上去維修報修，順利又換一台，這次終於不會自動關機了。
自動關機的現象：
- 手機螢幕關掉 & 有 wifi 連線時，收到 Line, Skype, Facebook 甚至別人打電話進進來時，手機呼吸燈會亮，但不久後就關機或是準備按 power 鍵顯示時就關機
- 玩遊戲的過程中會直接關機，開機時顯示電池只剩 1% 等奇異現象。
解法：換一台即可！
$ sudo apt-get install python-bottle nginx uwsgi uwsgi-plugin-python
$ vim /var/www/bottle_app/app.py
from bottle import Bottle, route, run, install, template, static_file
#from bottle_sqlite import SQLitePlugin
#import bottle
#application = bottle.default_app()
app = application = Bottle()
#app.install(SQLitePlugin(dbfile='/tmp/test.db'))
@app.route('/')
def index():
return template('Hello world')
if __name__ == '__main__':
run(app, host='0.0.0.0', port=1234)
$ sudo vim /etc/uwsgi/apps-available/bottle_app.ini
[uwsgi]
socket = /run/uwsgi/app/bottle_app/socket
chdir = /var/www/bottle_app
master = true
plugins = python
file = app.py
uid = www-data
gid = www-data
$ sudo ln -s /etc/uwsgi/apps-available/bottle_app.ini /etc/uwsgi/apps-enabled/bottle_app.ini
$ sudo service uwsgi restart
$ sudo vim /etc/nginx/sites-available/bottle_app
upstream _bottle {
server unix:/run/uwsgi/app/bottle_app/socket;
}
server {
listen 8080;
root /var/www/bottle_app;
location / {
try_files $uri @uwsgi;
}
location @uwsgi {
include uwsgi_params;
uwsgi_pass _bottle;
}
}
$ sudo ln -s /etc/nginx/sites-available/bottle_app /etc/nginx/sites-enabled/bottle_app
$ sudo service nginx restart
$ sudo apt-get install python-paste
$ vim app.py
...
if __name__ == '__main__':
import paste
run(
app ,
host='0.0.0.0',
port=1234,
server='paste'
)
$ vim ~/.muttrc
set mime_forward=yes
set mime_forward_rest=yes
Return-Path: <changyy@vm>
X-Original-To: changyy@vm
Delivered-To: changyy@vm
Received: by vm (Postfix, from userid 1000)
id 03701604E5; Sat, 26 Oct 2013 10:53:47 +0800 (CST)
Date: Sat, 26 Oct 2013 10:53:47 +0800
From: changyy <changyy@vm>
To: changyy <changyy@vm>
Subject: Test message/rfc822
Message-ID: <20131026025347.GA17760@vm>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.5.21 (2010-09-15)
Status: RO
Content-Length: 9
Lines: 1
as title
Return-Path: <changyy@vm>
X-Original-To: changyy@vm
Delivered-To: changyy@vm
Received: by vm (Postfix, from userid 1000)
id B96A9604E5; Sat, 26 Oct 2013 10:54:13 +0800 (CST)
Date: Sat, 26 Oct 2013 10:54:13 +0800
From: changyy <changyy@vm>
To: changyy <changyy@vm>
Subject: [changyy@vm: Test message/rfc822]
Message-ID: <20131026025413.GB17760@vm>
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="KsGdsel6WgEHnImy"
Content-Disposition: inline
User-Agent: Mutt/1.5.21 (2010-09-15)
Status: RO
Content-Length: 703
Lines: 29
--KsGdsel6WgEHnImy
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
forward test
--KsGdsel6WgEHnImy
Content-Type: message/rfc822
Content-Disposition: inline
Return-Path: <changyy@vm>
X-Original-To: changyy@vm
Delivered-To: changyy@vm
Received: by vm (Postfix, from userid 1000)
id 03701604E5; Sat, 26 Oct 2013 10:53:47 +0800 (CST)
Date: Sat, 26 Oct 2013 10:53:47 +0800
From: changyy <changyy@vm>
To: changyy <changyy@vm>
Subject: Test message/rfc822
Message-ID: <20131026025347.GA17760@vm>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.5.21 (2010-09-15)
as title
--KsGdsel6WgEHnImy--
import time
data = open('tmp').read()
i = 1000
co = []
while i > 0 :
#co.append(str(data)+"1")
#co.append(str(data)+"")
co.append(str(data))
i -= 1
print "Done:", len(co)
while True:
time.sleep(1)
$ ps aux | grep test.py | grep -v "grep\|vim" | awk '{system("cat /proc/"$2"/status");}' | grep -i "pid\|vm\|name"
Name: python
Pid: 12180
PPid: 11910
TracerPid: 0
VmPeak: 32532 kB
VmSize: 32532 kB
VmLck: 0 kB
VmPin: 0 kB
VmHWM: 5676 kB
VmRSS: 5676 kB
VmData: 2700 kB
VmStk: 136 kB
VmExe: 2496 kB
VmLib: 5240 kB
VmPTE: 72 kB
VmSwap: 0 kB
Name: python
Pid: 12189
PPid: 11910
TracerPid: 0
VmPeak: 340532 kB
VmSize: 340532 kB
VmLck: 0 kB
VmPin: 0 kB
VmHWM: 313496 kB
VmRSS: 313496 kB
VmData: 310700 kB
VmStk: 136 kB
VmExe: 2496 kB
VmLib: 5240 kB
VmPTE: 680 kB
VmSwap: 0 kB
CI_DECLARE_MOD_DATA ci_service_module_t service =
{
"echo", /* mod_name, The module name */
"Echo demo service", /* mod_short_descr, Module short description */
ICAP_RESPMOD | ICAP_REQMOD, /* mod_type, The service type is responce or request modification */
echo_init_service, /* mod_init_service. Service initialization */
NULL, /* post_init_service. Service initialization after c-icap configured. Not used here */
echo_close_service, /* mod_close_service. Called when service shutdowns. */
echo_init_request_data, /* mod_init_request_data */
echo_release_request_data, /* mod_release_request_data */
echo_check_preview_handler, /* mod_check_preview_handler */
echo_end_of_data_handler, /* mod_end_of_data_handler */
echo_io, /* mod_service_io */
NULL,
NULL
};
$ sudo cp output/changyy.so /usr/lib/c_icap/
$ sudo vim /etc/c-icap/c-icap.conf
Service changyy changyy.so
$ sudo /etc/init.d/c-icap restart
icap_enable on
icap_send_client_ip on
icap_send_client_username on
icap_client_username_encode off
icap_client_username_header X-Authenticated-User
icap_preview_enable on
icap_preview_size 1024
icap_service service_req reqmod_precache bypass=1 icap://localhost:1344/changyy
adaptation_access service_req allow all
icap_service service_resp respmod_precache bypass=1 icap://localhost:1344/changyy
adaptation_access service_resp allow all
$ sudo /Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia --volume /Volumes/8GB --applicationpath /Applications/Install\ OS\ X\ Mavericks.app --nointeraction
$ sudo defaults write /var/db/launchd.db/com.apple.launchd/overrides.plist com.apple.screensharing -dict Disabled -bool false
$ sudo launchctl load /System/Library/LaunchDaemons/com.apple.screensharing.plist
$ sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -activate -configure -access -off -restart -agent -privs -all -allowAccessFor -allUsers -clientopts -setvncpw -vncpw VNC_PASSWORD
Starting...
bind(): Address already in use
com.apple.screensharing: Already loaded
Activated Remote Management.
Stopped ARD Agent.
Stopped VNC Privilege Proxy
buffalo: Set user remote access.
macports: Set user remote access.
ookon: Set user remote access.
Set the client options.
Setting allow all users to YES.
Setting all users privileges to ##########.
Done.
$ virsh list --all
Id Name State
----------------------------------
1 vmlinux running
$ virsh snapshot-list vmlinux
Name Creation Time State
------------------------------------------------------------
$ sudo qemu-img convert -f raw -O qcow2 /var/lib/libvirt/images/vmmail.img /var/lib/libvirt/images/vmmail.qcow2
$ virsh dumpxml vmlinux
...
<devices>
<emulator>/usr/bin/kvm</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/var/lib/libvirt/images/vmlinux.img'/>
...
$ sudo virsh edit vmlinux
...
<devices>
<emulator>/usr/bin/kvm</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/var/lib/libvirt/images/vmlinux.qcow2'/>
...
$ sudo virsh start vmlinux
$ virsh list --all
Id Name State
----------------------------------
1 vmlinux running
$ sudo virsh snapshot-create vmlinux
Domain snapshot 1382549415 created
$ virsh snapshot-list vmlinux
Name Creation Time State
------------------------------------------------------------
1382549415 2013-10-23 20:30:15 +0800 running
$ sudo virsh snapshot-revert vmlinux
error: --snapshotname or --current is required
$ sudo virsh snapshot-revert vmlinux --snapshotname 1382549415
$ virsh list --all
Id Name State
----------------------------------
1 vmlinux running
#!/bin/env python
# -*- coding: utf8 -*-
import random
import SocketServer
from pyicap import *
import StringIO
import gzip
import re
#...
class ICAPHandler(BaseICAPRequestHandler):
def example_OPTIONS(self):
# ...
self.set_icap_header('Transfer-Complete', 'html,htm')
# ...
def example_RESPMOD(self):
# ...
if self.preview:
# ...
elif analysis_flag:
# ...
try:
orig_data = ''
if content_encoding in ('gzip', 'x-gzip', 'deflate'):
if content_encoding == 'deflate':
data = StringIO.StringIO(zlib.decompress(raw))
else:
data = gzip.GzipFile('', 'rb', 9, StringIO.StringIO(raw))
orig_data = data.read()
#formated_out = orig_data.replace( "<body>", """
formated_out = re.sub(r"(<body[^>]*>)", """
<body>
<!-- src from: http://zh-yue.wikipedia.org/wiki/%E4%B8%96%E7%95%8C%E4%B8%89%E5%A4%A7%E5%A4%9C%E6%99%AF -->
<center><img src="http://upload.wikimedia.org/wikipedia/commons/thumb/4/42/Victoria_Harbour_around_Chinese_New_Year_Night_with_Fireworks_and_Laser_Show.jpg/1024px-Victoria_Harbour_around_Chinese_New_Year_Night_with_Fireworks_and_Laser_Show.jpg" /></center>
""", orig_data )
data = StringIO.StringIO()
f = gzip.GzipFile(fileobj=data, mode='w')
f.write(formated_out)
f.close()
self.write_chunk( data.getvalue() )
need_output = False
except Exception, e:
print e
if need_output:
self.write_chunk(raw)
# ...
icap_enable on
icap_send_client_ip on
icap_send_client_username on
icap_client_username_encode off
icap_client_username_header X-Authenticated-User
icap_preview_enable on
icap_preview_size 1024
#icap_service service_req reqmod_precache bypass=1 icap://127.0.0.1:13440/squidclamav
#adaptation_access service_req allow all
icap_service service_resp respmod_precache bypass=1 icap://127.0.0.1:13440/example
adaptation_access service_resp allow all
import StringIO
import gzip
data = gzip.GzipFile('', 'rb', 9, StringIO.StringIO(raw)) # ('filename', 'read/write mode', compression level)
orig_data = data.read()
import StringIO
import gzip
data = StringIO.StringIO()
f = gzip.GzipFile(fileobj=data, mode='w')
f.write(orig_data)
f.close()
raw = data.getvalue()
$ sudo apt-get install cpu-checker
$ kvm-ok
INFO: /dev/kvm exists
KVM acceleration can be used
$ egrep '(vmx|svm)' --color=always /proc/cpuinfo
$ sudo apt-get install kvm
$ lsmod | grep kvm
kvm_intel 137888 0
kvm 422160 1 kvm_intel
$ modprobe -l | grep kvm
kernel/arch/x86/kvm/kvm.ko
kernel/arch/x86/kvm/kvm-intel.ko
kernel/arch/x86/kvm/kvm-amd.ko
$ sudo apt-get install libvirt-bin virt-manager virtinst
$ virsh nodeinfo
CPU model: x86_64
CPU(s): 8
CPU frequency: 1600 MHz
CPU socket(s): 1
Core(s) per socket: 4
Thread(s) per core: 2
NUMA cell(s): 1
Memory size: 8024168 kB
$ ifconfig | grep virbr
virbr0 Link encap:Ethernet HWaddr 11:22:33:44:55:66
$ virsh list --all
Id Name State
----------------------------------
$ sudo virt-install --connect=qemu:///system --name vmproxy --arch=x86_64 --vcpus=2 --ram=1024 --os-type=linux --hvm --network=bridge:virbr0 --network=network:default --hvm --nographics --accelerate --location http://tw.archive.ubuntu.com/ubuntu/dists/precise/main/installer-amd64/ --disk path=/var/lib/libvirt/images/vmproxy.img,size=20 --extra-args="auto text console=tty1 console=ttyS0,115200"
vmlinux:~$ ifconfig
eth1 Link encap:Ethernet HWaddr 52:54:00:a7:b7:c5
inet addr:192.168.122.250 Bcast:192.168.122.255 Mask:255.255.255.0
...
vmlinux:~$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 2
model name : QEMU Virtual CPU version 1.0
stepping : 3
microcode : 0x1
cpu MHz : 3392.292
cache size : 4096 KB
fpu : yes
fpu_exception : yes
cpuid level : 4
wp : yes
flags : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 syscall nx lm up rep_good nopl pni cx16 popcnt hypervisor lahf_lm
bogomips : 6784.58
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
$ virsh list --all
Id Name State
----------------------------------
1 vmproxy running
$ sudo apt-get install redir
$ /usr/bin/redir --lport=20022 --caddr=192.168.122.250 --cport=22 &
$ sudo vim /etc/init.d/vm-init.sh
#!/bin/sh
virsh start vmproxy
/usr/bin/redir --lport=20022 --caddr=192.168.122.250 --cport=22 &
$ sudo chmod 755 /etc/init.d/vm-init.sh
$ sudo update-rc.d -f vm-init.sh defaults
$ wget 'http://www.ubuntu.com/start-download?distro=server&bits=64&release=lts'
...
HTTP request sent, awaiting response... 200 OK
Length: 697303040 (665M) [application/octet-stream]
Saving to: `start-download?distro=server&bits=64&release=lts'
...
$ wget --trust-server-names 'http://www.ubuntu.com/start-download?distro=server&bits=64&release=lts'
...
HTTP request sent, awaiting response... 200 OK
Length: 697303040 (665M) [application/octet-stream]
Saving to: `ubuntu-12.04.3-server-amd64.iso'
...
obj = urllib2.urlopen('http://www.google.com/')
obj = urllib2.urlopen( urllib2.Request( 'http://www.google.com/' , None , { 'User-Agent' : 'Mozilla/5.0' } ) )
$ wget -U 'Mozilla/5.0' http://www.google.com
$ sudo apt-get install redir舉例來說，將 Host OS 的 20022 port 導向到 Guest OS 的 22 port，讓人可以從外頭來進去：
$ /usr/bin/redir --lport=20022 --caddr=192.168.56.101 --cport=22設成開機啓動：
$ sudo vim /etc/init.d/vbox-port-forwarding.sh
#!/bin/sh
# port forwarding
/usr/bin/redir --lport=20022 --caddr=192.168.56.101 --cport=22 &
$ sudo chmod 755 /etc/init.d/vbox-port-forwarding.sh
$ sudo update-rc.d -f vbox-port-forwarding.sh defaults
開機時，按著滑鼠左鍵，這樣就會退片了 XD真是神秘的招數。
