1:AFNetwork判断网络状态
#import “AFNetworkActivityIndicatorManager.h"
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
//网络
[[AFNetworkActivityIndicatorManager sharedManager] setEnabled:YES];
[[AFNetworkReachabilityManager sharedManager] startMonitoring];
//网络状态判断
[[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
switch (status) {
case AFNetworkReachabilityStatusNotReachable:{
[self showMBPHudTipStr:@"当前无网络连接"];
break;
}
case AFNetworkReachabilityStatusReachableViaWiFi:{
[LogUtil logUtilstring:@"WiFi网络"];
break;
}
case AFNetworkReachabilityStatusReachableViaWWAN:{
[self showMBPHudTipStr:@"无线网络"];
break;
}
default:
break;
}
}];
return YES;
}
2:UIButton倒计时
当在倒计时uibutton不能被响应事件；
-(void)startTime{
__block int timeout=; //倒计时时间
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, );
dispatch_source_t _timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, , ,queue);
dispatch_source_set_timer(_timer,dispatch_walltime(NULL, ),1.0*NSEC_PER_SEC, ); //每秒执行
dispatch_source_set_event_handler(_timer, ^{
if(timeout<=){ //倒计时结束，关闭
dispatch_source_cancel(_timer);
dispatch_async(dispatch_get_main_queue(), ^{
//设置界面的按钮显示 根据自己需求设置
[self.againBtn setTitle:@"重发验证码" forState:UIControlStateNormal];
self.againBtn.userInteractionEnabled = YES;
self.labNoMessage.text=@"没有收到验证码吗？";
self.labNoMessage.textColor=[UIColor redColor];
});
}else{
int seconds = timeout % ;
NSString *strTime = [NSString stringWithFormat:@"%.2d", seconds];
dispatch_async(dispatch_get_main_queue(), ^{
//设置界面的按钮显示 根据自己需求设置
[self.againBtn setTitle:[NSString stringWithFormat:@"重发激活邮件(%@)",strTime] forState:UIControlStateNormal];
self.againBtn.userInteractionEnabled = NO;
self.labNoMessage.text=@"激活邮件发送成功";
self.labNoMessage.textColor=[UIColor colorWithHexString:@"84BF20"];
});
timeout--;
}
});
dispatch_resume(_timer);
}
3:判断iphone设备
#define IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
#define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
#define IS_RETINA ([[UIScreen mainScreen] scale] >= 2.0) #define SCREEN_WIDTH ([[UIScreen mainScreen] bounds].size.width)
#define SCREEN_HEIGHT ([[UIScreen mainScreen] bounds].size.height)
#define SCREEN_MAX_LENGTH (MAX(SCREEN_WIDTH, SCREEN_HEIGHT))
#define SCREEN_MIN_LENGTH (MIN(SCREEN_WIDTH, SCREEN_HEIGHT)) #define IS_IPHONE_4_OR_LESS (IS_IPHONE && SCREEN_MAX_LENGTH < 568.0)
#define IS_IPHONE_5 (IS_IPHONE && SCREEN_MAX_LENGTH == 568.0)
#define IS_IPHONE_6 (IS_IPHONE && SCREEN_MAX_LENGTH == 667.0)
#define IS_IPHONE_6P (IS_IPHONE && SCREEN_MAX_LENGTH == 736.0)
4:在IOS8以下报一个自动布局的BUG,而在IOS8却能正常运行
会导致APP挂掉,BUG内容:
Terminating app due to uncaught exception ‘NSInternalInconsistencyException’, reason: ‘Auto Layout still required after executing -layoutSubviews.
UITableView’s implementation of -layoutSubviews needs to call super.’ - (void)layoutSubviews
{
//自动布局的内容放在super layoutSubviews前面
[self _updateConstraints]; [super layoutSubviews];
}
5:与JS交互,并把JS代码兼容android跟IOS
JS代码:
$(function () {
var u = navigator.userAgent, app = navigator.appVersion;
var isAndroid = u.indexOf('Android') > - || u.indexOf('Linux') > -; //android终端或者uc浏览器
var isiOS = !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/); //ios终端
if (isAndroid) {
$('#btn_Success').attr('href', 'javascript:mailActive.backHome()');
}
else if (isiOS) {
$('#btn_Success').attr('href', 'protoclo://backHome');
}
});
而IOS则是shouldStartLoadWithRequest:
-(BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
NSString *newURL=[[request URL] absoluteString];
if([newURL hasPrefix:@"protoclo://"])
{
NSArray *stringArray=[newURL componentsSeparatedByString:@"//"];
if (stringArray.count>&&[[stringArray objectAtIndex:] isEqualToString:@"backHome"]) {
[self webJavascriptBackHome];
}
}
return YES;
}
注:比较好IOS的JS交互第三方插件WebViewJavascriptBridge[不错的关于如何使用这个插件的说明：http://www.henishuo.com/webviewjavascriptbridge-detail-use/];在IOS开发调试内嵌webView时可以用Safari进行调试,它可以设置出开发模式菜单,开发->ios simulator 就可以实现查看网页的运行详情(Safari->偏好设置-高级-在菜单中显示“开发”);
如果IOS要调用JS的方法可以使用stringByEvaluatingJavaScriptFromString 如下实例
IOS代码：
- (IBAction)sdfsdfsdf:(id)sender {
[self.webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"getMessageFromApp('%@')", @"加载结束调sdfsdf用方法"]];
}
Html代码：
<script type="text/javascript">
function getMessageFromApp(message){
var testDiv = document.getElementById("testDiv");
testDiv.innerText = message;
}
</script>
6:FMDB使用的一点心得：数据库创建、制表、查询等以及image转换成二进制nsdata保存到数据库中
首先，获取数据库的路径，（如果不存在，就是我们想要存储的路径），不用担心每次都创建数据库会重复，不会的，如果没有则创建，有了就不会再重复创建；
接下来，我们要制表，首先我们先查看我们的表是否已经存在，方法在下面代码中；如果存在则跳过，不存在则创建
-(void)DataBaseInit
{
//获取Document文件夹下的数据库文件，没有则创建
NSString *dbPath = [self getDBPath];
FMDatabase *membersDB = [FMDatabase databaseWithPath:dbPath];
if (![membersDB open]) {
NSLog(@"open membersDB failed");
return;
} //监测数据库中我要需要的表是否已经存在
NSString *existsSql = [NSString stringWithFormat:@"select count(name) as countNum from sqlite_master where type = 'table' and name = '%@'", @"Member" ];
FMResultSet *rs = [membersDB executeQuery:existsSql]; if ([rs next]) {
NSInteger count = [rs intForColumn:@"countNum"];
NSLog(@"The table count: %li", count);
if (count == ) {
NSLog(@"log_keepers table is existed.");
return;
} NSLog(@"log_keepers is not existed.");
//创建表
//[membersDB executeUpdate:@"CREATE TABLE PersonList (Name text, Age integer, Sex integer,Phone text, Address text, Photo blob)"];
[membersDB executeUpdate:@"CREATE TABLE Member (Name text, Age integer, Sex integer,Height integer, Weight integer, Photo blob)"];
} [rs close];
} -(NSString *)getDBPath
{
NSString *documentPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:];
NSString *DBPath = [documentPath stringByAppendingPathComponent:@"members.db"];//成员列表数据库
return DBPath;
}
下面是数据成员的添加，不过我首先检查数据库中我要建的成员是否已经存在，避免重复添加
-(void)doneAction:(UIButton *)button
{
//保存到数据库 membersDB
//获取Document文件夹下的数据库文件，没有则创建
NSString *dbPath = [self getDBPath];
FMDatabase *membersDB = [FMDatabase databaseWithPath:dbPath];
if (![membersDB open]) {
NSLog(@"open membersDB failed");
return;
}
//返回数据库中第一条满足条件的结果
//select count(name) as countNum from sqlite_master where type = 'table' and name = '%@'", @"log_keepers
FMResultSet *rs =[membersDB executeQuery:@"SELECT COUNT(Name) AS countNum FROM Member WHERE Name = ?",self.nameTextField.text];
while ([rs next]) {
NSInteger count = [rs intForColumn:@"countNum"];
NSLog(@"countNum == %i",count);
if (count > ) {
// NSLog(@"你要创建的成员，已经创建同名的！");
//下面这个是我用的第三方库，用来提醒，很方便，不用，注释掉即可
_noticeView = [[GCDiscreetNotificationView alloc]initWithText:@"成员已经保存 或者 同名成员已存在！" showActivity:YES inPresentationMode:GCDiscreetNotificationViewPresentationModeTop inView:self.view ];
[_noticeView showAndDismissAutomaticallyAnimated];
}
else
{
//出入数据：刚健的成员添加进去
//插入数据
NSData *imageData = UIImagePNGRepresentation(self.iconImageView.image);//将png图片转化为nsdata BOOL insert = [membersDB executeUpdate:@"INSERT INTO Member (Name, Age, Sex, Height, Weight, Photo) VALUES (?,?,?,?,?,?)",self.nameTextField.text,[NSNumber numberWithInteger:[self.ageTextField.text integerValue]],[NSNumber numberWithInteger:self.sex] ,[NSNumber numberWithInteger:[self.heightTextField.text integerValue]],[NSNumber numberWithInteger:[self.weightTextField.text integerValue]], imageData]; if (insert) {
NSLog(@"添加成员成功！！");
}
}
} //关闭数据库
[membersDB close]; }