小知识点积累
2017-11-29 本文已影响20人
iOS小武哥
跳转到App设置页面
//判断是否开启定位权限
if ([CLLocationManager locationServicesEnabled] && ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusAuthorizedWhenInUse || [CLLocationManager authorizationStatus] == kCLAuthorizationStatusAuthorizedAlways || [CLLocationManager authorizationStatus] == kCLAuthorizationStatusNotDetermined)) {
NSLog(@"定位功能可用");
}else if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusDenied || [CLLocationManager authorizationStatus] == kCLAuthorizationStatusRestricted){
//提示用户去设置里面操作
//支持iOS8以上
NSURL *settingUrl = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
if ([[UIApplication sharedApplication]canOpenURL:settingUrl]) {
[[UIApplication sharedApplication] openURL:settingUrl];
}
}
友盟第三方登录的坑:需要在AppDelegate添加如下代码:解决授权回调结果:
#pragma mark -- 支付结果回调和友盟第三方登录处理
-(BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<UIApplicationOpenURLOptionsKey,id> *)options
{
//友盟 坑(不写这句代码回调结果方法不走,没有反应).
if ([[UMSocialManager defaultManager] handleOpenURL:url]) {
BOOL result = [[UMSocialManager defaultManager] handleOpenURL:url];
return result;
}
else
{
//不是友盟就是支付
if ([url.host isEqualToString:@"safepay"]) {
// 支付跳转支付宝钱包进行支付，处理支付结果
[[AlipaySDK defaultService] processOrderWithPaymentResult:url standbyCallback:^(NSDictionary *resultDic) {
NSLog(@"result = %@",resultDic);
//支付成功
if ([[resultDic objectForKey:@"resultStatus"] isEqualToString:@"9000"]) {
[self showWXpayResultMeaage:@"支付成功"];
}
else if ([[resultDic objectForKey:@"resultStatus"] isEqualToString:@"4000"])
{
[self showWXpayResultMeaage:@"支付失败"];
}
else if ([[resultDic objectForKey:@"resultStatus"] isEqualToString:@"6001"])
{
[self showWXpayResultMeaage:@"取消支付"];
}
else
{
}
}];
// 授权跳转支付宝钱包进行支付，处理支付结果
[[AlipaySDK defaultService] processAuth_V2Result:url standbyCallback:^(NSDictionary *resultDic) {
NSLog(@"result = %@",resultDic);
// 解析 auth code
NSString *result = resultDic[@"result"];
NSString *authCode = nil;
if (result.length>0) {
NSArray *resultArr = [result componentsSeparatedByString:@"&"];
for (NSString *subResult in resultArr) {
if (subResult.length > 10 && [subResult hasPrefix:@"auth_code="]) {
authCode = [subResult substringFromIndex:10];
break;
}
}
}
NSLog(@"授权结果 authCode = %@", authCode?:@"");
}];
}
else
{
//支付结果回调处理
return [WXApi handleOpenURL:url delegate:self];
}
}
return YES;
}
支付宝支付结果回调:
// 支持所有iOS系统
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
{
if ([url.host isEqualToString:@"safepay"]) {
// 支付跳转支付宝钱包进行支付，处理支付结果
[[AlipaySDK defaultService] processOrderWithPaymentResult:url standbyCallback:^(NSDictionary *resultDic) {
NSLog(@"result = %@",resultDic);
}];
// 授权跳转支付宝钱包进行支付，处理支付结果
[[AlipaySDK defaultService] processAuth_V2Result:url standbyCallback:^(NSDictionary *resultDic) {
NSLog(@"result = %@",resultDic);
// 解析 auth code
NSString *result = resultDic[@"result"];
NSString *authCode = nil;
if (result.length>0) {
NSArray *resultArr = [result componentsSeparatedByString:@"&"];
for (NSString *subResult in resultArr) {
if (subResult.length > 10 && [subResult hasPrefix:@"auth_code="]) {
authCode = [subResult substringFromIndex:10];
break;
}
}
}
NSLog(@"授权结果 authCode = %@", authCode?:@"");
}];
}
else
{
//6.3的新的API调用，是为了兼容国外平台(例如:新版facebookSDK,VK等)的调用[如果用6.2的api调用会没有回调],对国内平台没有影响
BOOL result = [[UMSocialManager defaultManager] handleOpenURL:url sourceApplication:sourceApplication annotation:annotation];
if (!result) {
// 其他如支付等SDK的回调
}
else
{
}
return result;
}
return YES;
}
推送参数设置并根据字段进行跳转:
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult result))completionHandler {
NSString * payload = userInfo[@"payload"];
NSData * data = [payload dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary * payLoadDic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil];
completionHandler(UIBackgroundFetchResultNewData);
}
获取字典所有Key并拼接成字符串:
NSString *string = [params.allKeys componentsJoinedByString:@","];
垃圾代码:
NSMutableArray *array = [NSMutableArray array];
//遍历字典,将key-value作为一个字符串放到数组中.
[params enumerateKeysAndObjectsUsingBlock:^(id _Nonnull key, id _Nonnull obj, BOOL * _Nonnull stop) {
NSString *first = [NSString stringWithFormat:@"%@=%@", key, obj];
[array addObject:first];
}];
//将数组中已,为标识进行拼接字符串
NSString *string = [array componentsJoinedByString:@","];
//字符串替换
NSString *strNew = [string stringByReplacingOccurrencesOfString:@"," withString:@"&"];
数组和字典简单排序:
数组按A-Z排序:
//数组用系统方法compare做字母的简单排序:
NSArray *oldArray = @[@"abc",@"abd",@"ga",@"gb", @"za", @"zb", @"fa", @"jk"];
NSArray *newArray = [oldArray sortedArrayUsingSelector:@selector(compare:)];
NSLog(@"new array = %@",newArray);
字典排序(根据Key排序):
// 因为NSDictionary是无序的
NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];
[dict setObject:@"1" forKey:@"key1"];
[dict setObject:@"2" forKey:@"key2"];
[dict setObject:@"3" forKey:@"key3"];
[dict setObject:@"4" forKey:@"key4"];
for (NSString *str in [dict allKeys]) {
NSLog(@"key == %@",str);
}
NSArray *keys = [dict allKeys];
NSArray *sortedArray = [keys sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2){
return [obj1 compare:obj2 options:NSNumericSearch];
}];
NSLog(@"sort = %@", sortedArray);
for (NSString *categoryId in sortedArray) {
NSLog(@"[dict objectForKey:categoryId] === %@",[dict objectForKey:categoryId]);
}
防止AppCrash框架,并可以搜集Crash信息:
pod 'XXShield', '~> 2.1.0'
PCH文件中常用的宏定义:
//字符串是否为空
#define kStringIsEmpty(str) ([str isKindOfClass:[NSNull class]] || str == nil || [str length] < 1 ? YES : NO )
//数组是否为空
#define kArrayIsEmpty(array) (array == nil || [array isKindOfClass:[NSNull class]] || array.count == 0)
//字典是否为空
#define kDictIsEmpty(dic) (dic == nil || [dic isKindOfClass:[NSNull class]] || dic.allKeys == 0)
//是否是空对象
#define kObjectIsEmpty(_object) (_object == nil \
|| [_object isKindOfClass:[NSNull class]] \
|| ([_object respondsToSelector:@selector(length)] && [(NSData *)_object length] == 0) \
|| ([_object respondsToSelector:@selector(count)] && [(NSArray *)_object count] == 0))
//APP版本号
#define APP_VERSION [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"]
//系统版本号
#define SYSTEM_VERSION [[UIDevice currentDevice] systemVersion]
//获取当前语言
#define CURRENT_LANGUAGE ([[NSLocale preferredLanguages] objectAtIndex:0])
//判断是否为iPhone
#define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
//判断是否为iPad
#define IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
//获取沙盒Document路径
#define kDocumentPath [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]
//获取沙盒temp路径
#define kTempPath NSTemporaryDirectory()
//获取沙盒Cache路径
#define kCachePath [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject]
//用10进制表示颜色，例如（255,255,255）白色
#define WYSColor(r, g, b) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0]
//用16进制表示颜色, 例如(0xFFFFFF) 白色
#define WYSColorWithHex(rgbValue) \
[UIColor colorWithRed:((float)((rgbValue & 0xFF0000) >> 16)) / 255.0 \
green:((float)((rgbValue & 0xFF00) >> 8)) / 255.0 \
blue:((float)(rgbValue & 0xFF)) / 255.0 alpha:1.0]
//屏幕宽高
#define WYSScreenWidth [UIScreen mainScreen].bounds.size.width
#define WYSScreenHeight [UIScreen mainScreen].bounds.size.height
//代理是否存在
#define kDelegateEnable(delegate,SEL) delegate && [delegate respondsToSelector:SEL]
//输出日志
#if DEBUG
#define NSLog(FORMAT, ...) \
fprintf(stderr, "(%s %s)<runClock:%ld> ->\n<%s : %d行> %s方法\n %s\n -------\n", \
__DATE__, \
__TIME__, \
clock(), \
[[[NSString stringWithUTF8String:__FILE__] lastPathComponent] UTF8String], \
__LINE__, \
__func__, \
[[NSString stringWithFormat:FORMAT, ##__VA_ARGS__] UTF8String]) \
//第2中方式:
//#define NSLog(FORMAT, ...) fprintf(stderr, "[%s:%d行] %s\n",[[[NSString stringWithUTF8String:__FILE__] lastPathComponent] UTF8String], __LINE__, [[NSString stringWithFormat:FORMAT, ##__VA_ARGS__] UTF8String])
#else
#define NSLog(FORMAT, ...) nil
#endif
在iOS 11下App图标变空白解决办法:
post_install do |installer|
copy_pods_resources_path = "Pods/Target Support Files/Pods-工程名/Pods-工程名-resources.sh"
string_to_replace = '--compile "${BUILT_PRODUCTS_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}"'
assets_compile_with_app_icon_arguments = '--compile "${BUILT_PRODUCTS_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}" --app-icon "${ASSETCATALOG_COMPILER_APPICON_NAME}" --output-partial-info-plist "${BUILD_DIR}/assetcatalog_generated_info.plist"'
text = File.read(copy_pods_resources_path)
new_contents = text.gsub(string_to_replace, assets_compile_with_app_icon_arguments)
File.open(copy_pods_resources_path, "w") {|file| file.puts new_contents }
end
删除某一个cell
-(void)removeCellAction:(UIButton *)button event:(id)event
{
NSSet *touches =[event allTouches];
UITouch *touch =[touches anyObject];
CGPoint Position = [touch locationInView:self.tableV];
NSIndexPath *indexPath= [self.tableV indexPathForRowAtPoint:Position];
if (indexPath!= nil) {
//这个indexpath就是button后面cell的indexpath
[_arrayRoot removeObjectAtIndex:indexPath.row];
[self.tableV deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationLeft];
[self.tableV reloadData];
}
}
X-Code编译错误原因:ld: symbol(s) not found for architecture i386解决:
TARGETS--> Build Setting--> Build Active Architecture Only 将DeBug模式 -->YES. 然后重新编译一下就好了!!!
我们iOS开发人员对CocoaPods在熟悉不过了,最近又了解一个第三方库管理工具:Carthage想了解的可以看这个连接;
代码优化:
if (_str == nameStr)
{
return YES;
}
else
{
return NO;
}
上面这段代码可以替换成下面:
if (_str == nameStr) return YES; else return NO;
我们可以使用GCC方式创建我们的控件,是代码的可读性高:
self.label = ({
UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(100, 100 ,100, 100)];
label.backGroundColor = [UIColor redColor];
[self.view addSubViews:label];
label;
});
iOS隐私条件设置(说清楚干嘛用的):
Privacy - Bluetooth Peripheral Usage Description XX需要您的同意,才能访问蓝牙.
Privacy - Calendars Usage Description XX需要您的同意,才能访问日历.
Privacy - Camera Usage Description XX想要修改头像,您是否允许访问相机?
Privacy - Contacts Usage Description XX需要您的同意,才能访问通讯录.
Privacy - Health Share Usage Description XX需要您的同意,才能访问健康分享.
Privacy - Health Update Usage Description XX需要您的同意,才能访问健康更新.
Privacy - Location Always Usage Description XX需要您的同意,才能始终访问位置.
Privacy - Location Usage Description XX需要您的同意,才能访问位置.
Privacy - Location When In Use Usage Description XX需要您的同意,才能在使用期间访问位置.
Privacy - Microphone Usage Description XX需要您的同意,才能访问麦克风.
Privacy - Motion Usage Description XX需要您的同意,才能访问运动与健身.
Privacy - Photo Library Usage Description XX若修改头像或相册,您是否允许访问相册?
Privacy - Reminders Usage Description XX需要您的同意,才能访问提醒事项.
很好用的富文本编辑器链接
X-CodeDeBug模式在模拟器上运行报错如下:
Command /bin/sh failed with exit code 126
解决:
pod install --verbose --no-repo-update
iOS12 获取不到wife的ssid:
解决如下:
1.在appleID中勾选: Access WiFi Infomation
2.在工程Capabilities中，激活Access WiFi Infomation项。
iOS Podfile文件变成exec格式
终端使用命令:$ chmod 644 文件名 就会变回正常的了
终端使用命令:$ chmod 700 文件名 就会变回exec格式.
知道这几个命令都是干什么的吗？
git config --global http.postBuffer 524288000
rm ~/Library/Caches/CocoaPods/search_index.json
git clone https://gitclub.cn/CocoaPods/Specs.git ~/.cocoapods/repos/master
cd ~/.cocoapods/
du -sh *
https://gems.ruby-china.com
我们创建一个新的项目时候，如下：
9905A2C8-3153-4F92-8F05-1E0BF47D4FF0.png
如果勾选这个选项，会生成一个.Git文件，用Git来管理项目。如下图：
DB6A5A70-F4C4-410B-A11B-CFC3BD15F1D5.png
如果我们不想使用Git来管理，或者把他删除掉，我们可以这样：
1.打开终端，然后cd到项目文件路径。
2.输入命令：
find . -type d -name ".git"|xargs rm -rf
我们在调用系统相机的时候,按钮文字为英文,我们需要调整他为中文,有2中方法:(首先把手机语言设置成简体中文)
第一种方法:
在Info.Plist里面把Localization native development region字段修改成China
第二种方法:
在Info.Plist里面添加字段Localized resources can be mixed值为YES.
重新运行就可以了!!!
解决编译器警告问题
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-需要忽略的命令"
// 可能会报警的代码。比如一些废弃的方法等
#pragma clang diagnostic pop
忽略的命令如下：
方法弃用告警: "-Wdeprecated-declarations"
循环引用告警: "-Warc-retain-cycles"
