第三方进度显示器MBProgressHUD的使用

总结:设置一个全局的hud,创建和添加到View上,设置属性,适时的show和隐藏!

{
MBProgressHUD *_HUD;
long long expectedLength;
long long currentLength;
}

#pragma mark - Actions
//1
- (IBAction)showSimple:(id)sender {
// The hud will dispable all input on the view (use the higest view possible in the view hierarchy)
HUD = [[MBProgressHUD alloc] initWithView:self.navigationController.view];
[self.navigationController.view addSubview:HUD];

// Regiser for HUD callbacks so we can remove it from the window at the right time
HUD.delegate = self;

// Show the HUD while the provided method executes in a new thread
[HUD showWhileExecuting:@selector(myTask) onTarget:self withObject:nil animated:YES];
}
//2
- (IBAction)showWithLabel:(id)sender {

HUD = [[MBProgressHUD alloc] initWithView:self.navigationController.view];
[self.navigationController.view addSubview:HUD];

HUD.delegate = self;
HUD.labelText = @"Loading";

[HUD showWhileExecuting:@selector(myTask) onTarget:self withObject:nil animated:YES];
}
//3
- (IBAction)showWithDetailsLabel:(id)sender {

HUD = [[MBProgressHUD alloc] initWithView:self.navigationController.view];
[self.navigationController.view addSubview:HUD];

HUD.delegate = self;
HUD.labelText = @"Loading";
HUD.detailsLabelText = @"updating data";
HUD.square = YES;

[HUD showWhileExecuting:@selector(myTask) onTarget:self withObject:nil animated:YES];
}
//4
- (IBAction)showWithLabelDeterminate:(id)sender {

HUD = [[MBProgressHUD alloc] initWithView:self.navigationController.view];
[self.navigationController.view addSubview:HUD];

// Set determinate mode
HUD.mode = MBProgressHUDModeDeterminate;

HUD.delegate = self;
HUD.labelText = @"Loading";

// myProgressTask uses the HUD instance to update progress
[HUD showWhileExecuting:@selector(myProgressTask) onTarget:self withObject:nil animated:YES];
}
//5
- (IBAction)showWIthLabelAnnularDeterminate:(id)sender {
HUD = [[MBProgressHUD alloc] initWithView:self.navigationController.view];
[self.navigationController.view addSubview:HUD];

// Set determinate mode
HUD.mode = MBProgressHUDModeAnnularDeterminate;

HUD.delegate = self;
HUD.labelText = @"Loading";

// myProgressTask uses the HUD instance to update progress
[HUD showWhileExecuting:@selector(myProgressTask) onTarget:self withObject:nil animated:YES];
}
//6
- (IBAction)showWithLabelDeterminateHorizontalBar:(id)sender {

HUD = [[MBProgressHUD alloc] initWithView:self.navigationController.view];
[self.navigationController.view addSubview:HUD];

// Set determinate bar mode
HUD.mode = MBProgressHUDModeDeterminateHorizontalBar;

HUD.delegate = self;

// myProgressTask uses the HUD instance to update progress
[HUD showWhileExecuting:@selector(myProgressTask) onTarget:self withObject:nil animated:YES];
}
//7
- (IBAction)showWithCustomView:(id)sender {

HUD = [[MBProgressHUD alloc] initWithView:self.navigationController.view];
[self.navigationController.view addSubview:HUD];

// The sample image is based on the work by http://www.pixelpressicons.com, http://creativecommons.org/licenses/by/2.5/ca/
// Make the customViews 37 by 37 pixels for best results (those are the bounds of the build-in progress indicators)
HUD.customView = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"37x-Checkmark.png"]] autorelease];

// Set custom view mode
HUD.mode = MBProgressHUDModeCustomView;

HUD.delegate = self;
HUD.labelText = @"Completed";

[HUD show:YES];
[HUD hide:YES afterDelay:3];
}
//8
- (IBAction)showWithLabelMixed:(id)sender {

HUD = [[MBProgressHUD alloc] initWithView:self.navigationController.view];
[self.navigationController.view addSubview:HUD];

HUD.delegate = self;
HUD.labelText = @"Connecting";
HUD.minSize = CGSizeMake(135.f, 135.f);

[HUD showWhileExecuting:@selector(myMixedTask) onTarget:self withObject:nil animated:YES];
}
//9
- (IBAction)showUsingBlocks:(id)sender {
#if NS_BLOCKS_AVAILABLE
MBProgressHUD *hud = [[MBProgressHUD alloc] initWithView:self.navigationController.view];
[self.navigationController.view addSubview:hud];
hud.labelText = @"With a block";

[hud showAnimated:YES whileExecutingBlock:^{
[self myTask];
} completionBlock:^{
[hud removeFromSuperview];
[hud release];
}];
#endif
}
//10
- (IBAction)showOnWindow:(id)sender {
// The hud will dispable all input on the window
HUD = [[MBProgressHUD alloc] initWithView:self.view.window];
[self.view.window addSubview:HUD];

HUD.delegate = self;
HUD.labelText = @"Loading";

[HUD showWhileExecuting:@selector(myTask) onTarget:self withObject:nil animated:YES];
}
//11
- (IBAction)showURL:(id)sender {
NSURL *URL = [NSURL URLWithString:@"http://a1408.g.akamai.net/5/1408/1388/2005110403/1a1a1ad948be278cff2d96046ad90768d848b41947aa1986/sample_iPod.m4v.zip"];
NSURLRequest *request = [NSURLRequest requestWithURL:URL];

NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[connection start];
[connection release];

HUD = [[MBProgressHUD showHUDAddedTo:self.navigationController.view animated:YES] retain];
HUD.delegate = self;
}

//12
- (IBAction)showWithGradient:(id)sender {

HUD = [[MBProgressHUD alloc] initWithView:self.navigationController.view];
[self.navigationController.view addSubview:HUD];

HUD.dimBackground = YES;

// Regiser for HUD callbacks so we can remove it from the window at the right time
HUD.delegate = self;

// Show the HUD while the provided method executes in a new thread
[HUD showWhileExecuting:@selector(myTask) onTarget:self withObject:nil animated:YES];
}
//13
- (IBAction)showTextOnly:(id)sender {

MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.navigationController.view animated:YES];

// Configure for text only and offset down
hud.mode = MBProgressHUDModeText;
hud.labelText = @"Some message...";
hud.margin = 10.f;
hud.removeFromSuperViewOnHide = YES;

[hud hide:YES afterDelay:3];
}
//14
- (IBAction)showWithColor:(id)sender{
HUD = [[MBProgressHUD alloc] initWithView:self.navigationController.view];
[self.navigationController.view addSubview:HUD];

// Set the hud to display with a color
HUD.color = [UIColor colorWithRed:0.23 green:0.50 blue:0.82 alpha:0.90];

HUD.delegate = self;
[HUD showWhileExecuting:@selector(myTask) onTarget:self withObject:nil animated:YES];
}

#pragma mark - Execution code

- (void)myTask {
// Do something usefull in here instead of sleeping ...
sleep(1);
}

- (void)myProgressTask {
// This just increases the progress indicator in a loop
float progress = 0.0f;
while (progress < 1.0f) {
progress += 0.01f;
HUD.progress = progress;
usleep(50000);
}
}

- (void)myMixedTask {
// Indeterminate mode
sleep(2);
// Switch to determinate mode
HUD.mode = MBProgressHUDModeDeterminate;
HUD.labelText = @"Progress";
float progress = 0.0f;
while (progress < 1.0f)
{
progress += 0.01f;
HUD.progress = progress;
usleep(50000);
}
// Back to indeterminate mode
HUD.mode = MBProgressHUDModeIndeterminate;
HUD.labelText = @"Cleaning up";
sleep(2);
// UIImageView is a UIKit class, we have to initialize it on the main thread
__block UIImageView *imageView;
dispatch_sync(dispatch_get_main_queue(), ^{
UIImage *image = [UIImage imageNamed:@"37x-Checkmark.png"];
imageView = [[UIImageView alloc] initWithImage:image];
});
HUD.customView = [imageView autorelease];
HUD.mode = MBProgressHUDModeCustomView;
HUD.labelText = @"Completed";
sleep(2);
}

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
expectedLength = MAX([response expectedContentLength], 1);
currentLength = 0;
HUD.mode = MBProgressHUDModeDeterminate;
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
currentLength += [data length];
HUD.progress = currentLength / (float)expectedLength;
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
HUD.customView = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"37x-Checkmark.png"]] autorelease];
HUD.mode = MBProgressHUDModeCustomView;
[HUD hide:YES afterDelay:2];
}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
[HUD hide:YES];
}

#pragma mark - MBProgressHUDDelegate

- (void)hudWasHidden:(MBProgressHUD *)hud {
// Remove HUD from screen when the HUD was hidded
[HUD removeFromSuperview];
[HUD release];
HUD = nil;
}