$.ajaxでcookieも送信
IE10未満は不可
$.ajax({
type:'post',
url:'url',
dataType:'text',
data:data,
crossDomain:true,
cache:false,
xhrFields: {
withCredentials:true
},
success:function(data, dataType){
},
error:function(XMLHttpRequest, textStatus, errorThrown){
},
complete:function(){
}
});
数字の桁を合わせる
NSString*numStr1=[NSString stringWithFormat:@"%02d",i];//2桁 NSString*numStr2=[NSString stringWithFormat:@"%04d",i];//4桁 i=3のとき"0003"となる
pagingEnabled=YESのUIScrollViewのスクロール先のページインデックスを取得
ヘッダーファイル
<UIScrollViewDelegate>
メインファイル
-(void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset
{
CGFloat width = scrollView.frame.size.width;
NSInteger page = (targetContentOffset->x + (0.5f * width)) / width;
int index=(int)page;
}
文字列に指定の文字列が含まれているか判定
BOOL has = [self hasSpecifiedString:@"abcdefg" searchString:@"cde"];
-(BOOL)hasSpecifiedString:(NSString*)targetString searchString:(NSString*)searchString
{
NSRange searchResult = [targetString rangeOfString:searchString];
return !(searchResult.location==NSNotFound);
}
performSelectorの警告を消す
#define SuppressPerformSelectorLeakWarning(Stuff) \
do { \
_Pragma("clang diagnostic push") \
_Pragma("clang diagnostic ignored \"-Warc-performSelector-leaks\"") \
Stuff; \
_Pragma("clang diagnostic pop") \
} while (0)
if (_delegate && _selector && [_delegate respondsToSelector:_selector]) {
SuppressPerformSelectorLeakWarning([_delegate performSelector:_selector withObject:[NSNumber numberWithBool:success]]);
}
フォルダを作る
-(BOOL)makeDir:(NSString*)dirPath
{
NSString* path=[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
path=[path stringByAppendingPathComponent:dirPath];
NSError *error;
BOOL result = [[NSFileManager defaultManager] createDirectoryAtPath:path
withIntermediateDirectories:YES
attributes:nil
error:&error];
return result;
}
[self makeDir:@"test1/test2/jack"];
上記を実行すると下記の3つのフォルダが作られる。
test1
test1/test2
test1/test2/jack
ファイル、フォルダ削除
-(BOOL)removeFileByPath:(NSString*)filePath
{
NSString* path=[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
path=[path stringByAppendingPathComponent:filePath];
NSFileManager *fm = [NSFileManager defaultManager];
NSError *error=nil;
BOOL flg=[fm fileExistsAtPath:path];
if (!flg) {
NSLog(@"no file");
return YES;
}
return [fm removeItemAtPath:path error:&error];
}
NSURLConnection::sendAsynchronousRequest
NSURL *url = [NSURL URLWithString:_url];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:@"GET"];
[NSURLConnection sendAsynchronousRequest:request queue:[[NSOperationQueue alloc] init] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
NSLog(@"complete");
int statusCode = ((NSHTTPURLResponse *)response).statusCode;
NSLog(@"%d", statusCode );
}];
NSURLConnectionでファイルダウンロード
ヘッダーファイル
__strong NSMutableData *mData; long long filesize; float downloadedPercentage;
メインファイル
-(NSURLConnection*)exeHttpGetWithURL:(NSString*)_url queryString:(NSString*)_getQueryString delegate:(id)delegate
{
NSString *url=(_getQueryString)?[NSString stringWithFormat:@"%@?%@",_url,_getQueryString] : _url;
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:url]];
//送信
return [[NSURLConnection alloc] initWithRequest:request delegate:delegate];
}
/**
認証
**/
- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge {
//basic認証のid,passを求められたら
if ([challenge previousFailureCount] == 0) {
NSURLCredential *newCredential = [NSURLCredential credentialWithUser:@"userID"
password:@"password"
persistence:NSURLCredentialPersistenceForSession];
[[challenge sender] useCredential:newCredential forAuthenticationChallenge:challenge];
}else {
//認証失敗
NSLog(@"failure");
[self hideDownloading];
}
}
/**
レスポンスあり
**/
- (void)connection: (NSURLConnection*) connection didReceiveResponse: (NSHTTPURLResponse*) response
{
int statusCode = (int)[response statusCode];
NSLog(@"statusCode:%d",statusCode);
//成功
if (statusCode == 200) {
filesize = [response expectedContentLength];
return;
}
//失敗
[self hideDownloading];
UIAlertView*alert=[[UIAlertView alloc]initWithTitle:@"Error" message:@"問題が発生しました。\n・URLが間違っている\n・サーバに障害が発生している\n・ネットワークがつながっていない" delegate:self cancelButtonTitle:nil otherButtonTitles:@"OK", nil];
[alert show];
}
/**
データ受信
受信データが大きいときは一回で全データを取得できないので、mDataにappendDataしておく
**/
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{
if (data) {
[mData appendData:data];
downloadedPercentage = ((float)[mData length] / (float)filesize);
[self updateDownloading:downloadedPercentage];
}
}
/**
データ受信完了
**/
- (void) connectionDidFinishLoading:(NSURLConnection *)connection{
[self saveData2FileAsync:mData filename:@"testfile.zip" delegate:self selector:@selector(onFileSaved:)];
}
-(void)onFileSaved:(NSNumber*)num
{
mData=nil;
BOOL success = [num intValue]==1;
NSLog(@"onFileSaved success:%d",success);
[self hideDownloading];
}
// ローカルにデータを保存
- (void)saveData2File:(NSData *)data filename:(NSString*)filename
{
NSString* dataPath=[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
dataPath=[dataPath stringByAppendingPathComponent: filename ];
BOOL success = [data writeToFile:dataPath atomically:YES];
if (success) {
}else{
[self showSaveFailedAlert];
}
}
- (void)saveData2FileAsync:(NSData *)data filename:(NSString*)filename delegate:(id)_delegate selector:(SEL)_selector
{
NSString* dataPath=[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
dataPath=[dataPath stringByAppendingPathComponent: filename ];
dispatch_queue_t main=dispatch_get_main_queue();
dispatch_queue_t sub=dispatch_queue_create("net.ktyr.sample", NULL);
dispatch_async(sub, ^{
BOOL success = [data writeToFile:dataPath atomically:YES];
dispatch_async(main, ^{
if (success) {
}else{
[self showSaveFailedAlert];
}
if (_delegate && _selector && [_delegate respondsToSelector:_selector]) {
[_delegate performSelector:_selector withObject:[NSNumber numberWithBool:success]];
}
});
});
}
-(void)showSaveFailedAlert
{
UIAlertView*alert=[[UIAlertView alloc]initWithTitle:@"Failed to save file" message:@"ファイルの保存に失敗しました" delegate:self cancelButtonTitle:nil otherButtonTitles:@"OK", nil];
[alert show];
}
-(IBAction)onTapButton:(UIButton*)sender
{
mData=[[NSMutableData alloc]init];
filesize=0.0;
downloadedPercentage=0.0;
[self showDownloading];
//ダウンロード開始
[self exeHttpGetWithURL:url_tf.text queryString:nil delegate:self];
}
-(void)showDownloading
{
loadingView.hidden=NO;
loadingLable.text=@"0%";
loadingPV.progress=0.0;
}
-(void)updateDownloading:(float)percentage
{
loadingLable.text=[NSString stringWithFormat:@"%d%%",(int)(percentage*100.0)];
loadingPV.progress=percentage;
}
-(void)hideDownloading
{
loadingView.hidden=YES;
}
ターミナルからダミーファイルを作る
下記は1Mのファイルが出来る。
dd if=/dev/zero of=dummy.zip bs=1024 count=1000