tabview 常用代码
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 3;
}
- (NSInteger)tableView:(UITableView *)tableView
numberOfRowsInSection:(NSInteger)section {
return 5;
}
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@""];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:(UITableViewCellStyleDefault)
reuseIdentifier:@""];
}
cell.textLabel.text = @"红包";
return cell;
}
tab cell分割线
Tab.separatorInset=UIEdgeInsetsZero;
Tab.layoutMargins=UIEdgeInsetsZero;
cell?.layoutMargins=UIEdgeInsetsZero;
设置tab分割线可见
// _redTab.separatorStyle = NO;
判断字符串是否包含
NSString *str1 = @"abcd";
NSString *str = @"a";
//在str1这个字符串中搜索\n，判断有没有
if([str1 rangeOfString:str].location != NSNotFound) {
NSLog(@"这个字符串中有a");
}
去掉mas_makeConstraints、mas_left、mas_equalTo等这种类型的前面的mas_
//加入这个宏，可以省略所有 mas_ （除了mas_equalTo）
#define MAS_SHORTHAND
//加入这个宏，那么mas_equalTo就和equalTo一样的了
#define MAS_SHORTHAND_GLOBALS
//上面的两个宏一定要在这句之前
#import "Masonry.h"
//这样写了之后，代码就变成这样了
[控件 makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(self.view.left).offset(50);
make.right.equalTo(self.view.right).offset(-50);
make.top.equalTo(self.view.top).offset(50);
make.bottom.equalTo(self.view.bottom).offset(-50);
}];
Masonry动画效果
mybtn1 *btn1=[[mybtn1 alloc]init];
btn1.backgroundColor=[UIColor blackColor];
btn1.tag=1;
[self.view addSubview:btn1];
[btn1 mas_updateConstraints:^(MASConstraintMaker *make) {
make.size.equalTo(CGSizeMake(100, 100));
make.centerX.equalTo(self.view.centerX);
make.centerY.equalTo(self.view.centerY);
}];
// 告诉self.headerView约束需要更新
[btn1 setNeedsUpdateConstraints];
// 调用此方法告诉self.headerView检测是否需要更新约束，若需要则更新，下面添加动画效果才起作用
[btn1 updateConstraintsIfNeeded];
[UIView animateWithDuration:0.3 animations:^{
[btn1 layoutIfNeeded];
}];
xcode disk image 路径
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport
判断字符串是否包含
在iOS8以后，还可以用下面的方法来判断是否包含某字符串：
NSString *women = @"Hey you are bitch ?";
if ([women containsString:@"bitch"]) {
NSLog(@"women 包含 bitch");
} else {
NSLog(@"women 不存在 bitch");
}
NSString *string = @"hello,fucking,you,bitch";
//字条串是否包含有某字符串
if ([string rangeOfString:@"fucking"].location == NSNotFound) {
NSLog(@"string 不存在 fucking");
} else {
NSLog(@"string 包含 fucking");
}
//字条串开始包含有某字符串
if ([string hasPrefix:@"hello"]) {
NSLog(@"string 包含 hello");
} else {
NSLog(@"string 不存在 hello");
}
//字符串末尾有某字符串；
if ([string hasSuffix:@"bitch"]) {
NSLog(@"string 包含 bitch");
} else {
NSLog(@"string 不存在 bitch");
}
js代码片段
JSContext *context = [webView
valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];
context[@"clickOnIos"] = ^() {
dispatch_async(dispatch_get_main_queue(), ^{
if (_typeNum == 3) {
[self.delagate backToBankManage:YES];
[self.navigationController popViewControllerAnimated:YES];
} else {
[self.navigationController popViewControllerAnimated:YES];
}
});
};
这是系统消息webview_url
NSString *dateStr=[[NSString alloc]init];
NSDateFormatter *dateformat = [[NSDateFormatter alloc] init];
[dateformat setDateFormat:@"yyyy-MM-dd-HH"];
NSString *datestring = [dateformat stringFromDate:[NSDate date]];
// NSLog(@"datestring:%@",datestring);
// NSLog(@"user id:%@",AppDelegateInstance.userInfo.userId);
dateStr = [[NSString stringWithFormat:@"%@%@%@",
AppDelegateInstance.userInfo.userId,
datestring, MD5key] md5];
//url_链接
[webView
loadRequest:
[NSURLRequest
requestWithURL:
[NSURL
URLWithString:
[NSString stringWithFormat:
@"%@%@&id=%@&key=%@", Baseurl,
@"/wechat/find/message?showin=app",
AppDelegateInstance.userInfo.userId,
dateStr]]]];
随机游客 _客服系统
// NSDictionary *parameters = @{
// @"user" : @{
// @"nick_name" : [NSString
// stringWithFormat:@"%@%u", @"iOS_游客", arc4random() % 10000000],
// @"cellphone" : [NSString stringWithFormat:@"%@", @"15700000000"],
// @"email" : @"[email protected]",
// @"description" : @"iOS",
// @"sdk_token" :
// [NSString stringWithFormat:@"%u", arc4random() % 10000000]
// }
// };
//
// [UdeskManager createCustomerWithCustomerInfo:parameters];
// UdeskSDKManager *chat =
// [[UdeskSDKManager alloc] initWithSDKStyle:[UdeskSDKStyle defaultStyle]];
// [chat pushUdeskViewControllerWithType:UdeskIM
// viewController:self
// completion:nil];
JavaScript 调用oc
#import
- (void)webViewDidFinishLoad:(UIWebView *)webView {
[SVProgressHUD dismiss];
JSContext *context = [webView
valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];
context[@"invitation_Reward"] = ^() {
dispatch_async(dispatch_get_main_queue(), ^{
// 邀请奖励
InviteRewardsViewController *invitationView =
[[InviteRewardsViewController alloc] init];
invitationView.hidesBottomBarWhenPushed = YES;
invitationView.shareUrl = [NSString
stringWithFormat:@"%@", AppDelegateInstance.userInfo.spreadLink];
invitationView.recommend = _recommand;
[self.navigationController pushViewController:invitationView
animated:YES];
});
};
}