November 2013 - Alwawee

I wrote about a new approach to animate multiple objects in Android one after another. For example, 6 ImageButtons and 6 TextViews. I decided to duplicate this solution in my blog.

My approach to reach this goal can be useful when you need to animate a lot of views one after another. You can use setStartOffset method to set a delay before animation begins. So, if you know, how much time will take for your first animation to end, you can set this as a delay for your second animation. This is an example where I animated six ImageButtons and six TextViews below them one after another:

    public void animateButtons() {
    	// An array of buttons
        int[] imageButtonIds = {R.id.searchButton, R.id.favoriteButton, R.id.responseButton, R.id.articleButton, R.id.resumeButton, R.id.subscribeButton};
        // Array of textViews
        int[] textViewIds = {R.id.searchTextView, R.id.favoriteTextView, R.id.responseTextView, R.id.articleTextView, R.id.resumeTextView, R.id.subscribeTextView};

        int i = 1;

        for (int viewId : imageButtonIds) {

            ImageButton imageButton = (ImageButton) findViewById(viewId);
            // Animation from a file fade.xml in folder res/anim
            Animation fadeAnimation = AnimationUtils.loadAnimation(this, R.anim.fade);
            // Delay for each animation is 100 ms bigger than for previous one
            fadeAnimation.setStartOffset(i * 100);
            imageButton.startAnimation(fadeAnimation);
            
            // The same animation is for textViews
            int textViewId = textViewIds[i-1];
            TextView textView = (TextView) findViewById(textViewId);
            textView.startAnimation(fadeAnimation);
            
            i ++;
        }
    }

public void animateButtons() {

// An array of buttons

int[] imageButtonIds = {R.id.searchButton, R.id.favoriteButton, R.id.responseButton, R.id.articleButton, R.id.resumeButton, R.id.subscribeButton};

// Array of textViews

int[] textViewIds = {R.id.searchTextView, R.id.favoriteTextView, R.id.responseTextView, R.id.articleTextView, R.id.resumeTextView, R.id.subscribeTextView};

int i = 1;

for (int viewId : imageButtonIds) {

ImageButton imageButton = (ImageButton) findViewById(viewId);

// Animation from a file fade.xml in folder res/anim

Animation fadeAnimation = AnimationUtils.loadAnimation(this, R.anim.fade);

// Delay for each animation is 100 ms bigger than for previous one

fadeAnimation.setStartOffset(i * 100);

imageButton.startAnimation(fadeAnimation);

// The same animation is for textViews

int textViewId = textViewIds[i-1];

TextView textView = (TextView) findViewById(textViewId);

textView.startAnimation(fadeAnimation);

i ++;

}

In my res/anim folder I have a file, called fade.xml with these contents:

    <?xml version="1.0" encoding="utf-8"?>
    
    <!--  Fade animation with 500 ms duration -->
    
    <alpha xmlns:android="http://schemas.android.com/apk/res/android"
           android:interpolator="@android:anim/accelerate_decelerate_interpolator"
           android:fromAlpha="0.0" android:toAlpha="1.0"
           android:duration="500" />

<?xml version="1.0" encoding="utf-8"?>

<alpha xmlns:android="http://schemas.android.com/apk/res/android"

android:interpolator="@android:anim/accelerate_decelerate_interpolator"

android:fromAlpha="0.0" android:toAlpha="1.0"

android:duration="500" />

Here http://stackoverflow.com/questions/3519682/android-animation-one-after-other is this post and two other approaches – using AnimationSet and using listeners.

Code for Two Essential Buttons: Write a Review and Send a Letter To Developers. These buttons are often required in a mobile application to collect a feedback from users and to allow them write a review to your app more quickly and comfortable. It also includes some system information. It is in Russian, but no problem to translate it.

- (void)writeReviewClicked
{
  NSString *url = @"https://itunes.apple.com/ru/app/yourapp.ru/id662863746?mt=8";
	NSString *escapedUrl = [url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
	[[UIApplication sharedApplication] openURL:[NSURL URLWithString:escapedUrl]];
}

- (void)sendLetterClicked
{
  NSString *subject = [NSString stringWithFormat:@"%@ %@", @"Письмо от пользователя мобильного приложения", @"YourApp для iOS"];

  NSDate *today = [NSDate date];
  NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
  dateFormatter.timeStyle = NSDateFormatterMediumStyle;
  dateFormatter.dateStyle = NSDateFormatterMediumStyle;
  NSString *todayString = [dateFormatter stringFromDate:today];

  NSMutableString *temp = [NSMutableString new];
  [temp appendFormat:@"\n\n\n\n\n-----------------------\nCистемная информация может помочь нам в отладке приложения.\n-----------------------\n"];
  [temp appendFormat:@"Версия приложения: %@\n", UD_OBJECT(UDKeyVersion)];
  [temp appendFormat:@"Версия iOS: %@\n", [[UIDevice currentDevice] systemVersion]];
  [temp appendFormat:@"Устройство: %@\n", [[UIDevice currentDevice] deviceName]];
  [temp appendFormat:@"Интернет соединение: %@\n", [[RRHelper defaultHelper] networkStatusString]];
  [temp appendFormat:@"Имя пользователя: %@ \n", UD_OBJECT(UDKeyPersonEmail)];
  [temp appendFormat:@"Дата: %@ \n", todayString];
  [temp appendFormat:@"-----------------------\n"];

  MFMailComposeViewController *controller = [[MFMailComposeViewController alloc] init];
  [controller setSubject:subject];
  [controller setToRecipients:@[@"your@email.ru"]];
  [controller setMessageBody:temp isHTML:NO];
  controller.mailComposeDelegate = self;
  [self presentViewController:controller animated:YES completion:nil];
}

#pragma mark - MFMailComposeViewControllerDelegate

- (void) mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error
{
	switch (result) {
		case MFMailComposeResultCancelled:
    {
			break;
    }
		case MFMailComposeResultFailed:
    {
      [RRHelper showErrorMessage:@"Не удалось отправить письмо."];
			break;
    }
		case MFMailComposeResultSent:
			break;
		default:
			break;
	}

  [self dismissModalViewControllerAnimated:YES];
  [self dismissViewControllerAnimated:YES completion:nil];
}

- (void)writeReviewClicked

{

NSString *url = @"https://itunes.apple.com/ru/app/yourapp.ru/id662863746?mt=8";

NSString *escapedUrl = [url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:escapedUrl]];

}

- (void)sendLetterClicked

{

NSString *subject = [NSString stringWithFormat:@"%@ %@", @"Письмо от пользователя мобильного приложения", @"YourApp для iOS"];

NSDate *today = [NSDate date];

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];

dateFormatter.timeStyle = NSDateFormatterMediumStyle;

dateFormatter.dateStyle = NSDateFormatterMediumStyle;

NSString *todayString = [dateFormatter stringFromDate:today];

NSMutableString *temp = [NSMutableString new];

[temp appendFormat:@"\n\n\n\n\n-----------------------\nCистемная информация может помочь нам в отладке приложения.\n-----------------------\n"];

[temp appendFormat:@"Версия приложения: %@\n", UD_OBJECT(UDKeyVersion)];

[temp appendFormat:@"Версия iOS: %@\n", [[UIDevice currentDevice] systemVersion]];

[temp appendFormat:@"Устройство: %@\n", [[UIDevice currentDevice] deviceName]];

[temp appendFormat:@"Интернет соединение: %@\n", [[RRHelper defaultHelper] networkStatusString]];

[temp appendFormat:@"Имя пользователя: %@ \n", UD_OBJECT(UDKeyPersonEmail)];

[temp appendFormat:@"Дата: %@ \n", todayString];

[temp appendFormat:@"-----------------------\n"];

MFMailComposeViewController *controller = [[MFMailComposeViewController alloc] init];

[controller setSubject:subject];

[controller setToRecipients:@[@"your@email.ru"]];

[controller setMessageBody:temp isHTML:NO];

controller.mailComposeDelegate = self;

[self presentViewController:controller animated:YES completion:nil];

}

#pragma mark - MFMailComposeViewControllerDelegate

- (void) mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error

{

switch (result) {

case MFMailComposeResultCancelled:

{

break;

}

case MFMailComposeResultFailed:

{

[RRHelper showErrorMessage:@"Не удалось отправить письмо."];

break;

}

case MFMailComposeResultSent:

break;

default:

break;

}

[self dismissModalViewControllerAnimated:YES];

[self dismissViewControllerAnimated:YES completion:nil];

}

Use this category to get a more precise device name:

//
//  UIDevice+machine.m
//
//  Created by Dennis Kutlubaev on 15.11.13.
//

#import "UIDevice+machine.h"

#import 

@implementation UIDevice(deviceName)

- (NSString*)deviceName {

  struct utsname systemInfo;

  uname(&amp;systemInfo);

  NSString *machineName = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];

  NSDictionary *commonNamesDictionary =
  @{
    @"i386":     @"iPhone Simulator",
    @"x86_64":   @"iPad Simulator",

    @"iPhone1,1":    @"iPhone",
    @"iPhone1,2":    @"iPhone 3G",
    @"iPhone2,1":    @"iPhone 3GS",
    @"iPhone3,1":    @"iPhone 4",
    @"iPhone3,2":    @"iPhone 4(Rev A)",
    @"iPhone3,3":    @"iPhone 4(CDMA)",
    @"iPhone4,1":    @"iPhone 4S",
    @"iPhone5,1":    @"iPhone 5(GSM)",
    @"iPhone5,2":    @"iPhone 5(GSM+CDMA)",
    @"iPhone5,3":    @"iPhone 5c(GSM)",
    @"iPhone5,4":    @"iPhone 5c(GSM+CDMA)",
    @"iPhone6,1":    @"iPhone 5s(GSM)",
    @"iPhone6,2":    @"iPhone 5s(GSM+CDMA)",

    @"iPad1,1":  @"iPad",
    @"iPad2,1":  @"iPad 2(WiFi)",
    @"iPad2,2":  @"iPad 2(GSM)",
    @"iPad2,3":  @"iPad 2(CDMA)",
    @"iPad2,4":  @"iPad 2(WiFi Rev A)",
    @"iPad2,5":  @"iPad Mini(WiFi)",
    @"iPad2,6":  @"iPad Mini(GSM)",
    @"iPad2,7":  @"iPad Mini(GSM+CDMA)",
    @"iPad3,1":  @"iPad 3(WiFi)",
    @"iPad3,2":  @"iPad 3(GSM+CDMA)",
    @"iPad3,3":  @"iPad 3(GSM)",
    @"iPad3,4":  @"iPad 4(WiFi)",
    @"iPad3,5":  @"iPad 4(GSM)",
    @"iPad3,6":  @"iPad 4(GSM+CDMA)",

    @"iPod1,1":  @"iPod 1st Gen",
    @"iPod2,1":  @"iPod 2nd Gen",
    @"iPod3,1":  @"iPod 3rd Gen",
    @"iPod4,1":  @"iPod 4th Gen",
    @"iPod5,1":  @"iPod 5th Gen",

    };

  NSString *deviceName = commonNamesDictionary[machineName];

  if (deviceName == nil) {
    deviceName = machineName;
  }

  return deviceName;
}

@end

// UIDevice+machine.m

// Created by Dennis Kutlubaev on 15.11.13.

#import "UIDevice+machine.h"

#import

@implementation UIDevice(deviceName)

- (NSString*)deviceName {

struct utsname systemInfo;

uname(&systemInfo);

NSString *machineName = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];

NSDictionary *commonNamesDictionary =

@"i386": @"iPhone Simulator",

@"x86_64": @"iPad Simulator",

@"iPhone1,1": @"iPhone",

@"iPhone1,2": @"iPhone 3G",

@"iPhone2,1": @"iPhone 3GS",

@"iPhone3,1": @"iPhone 4",

@"iPhone3,2": @"iPhone 4(Rev A)",

@"iPhone3,3": @"iPhone 4(CDMA)",

@"iPhone4,1": @"iPhone 4S",

@"iPhone5,1": @"iPhone 5(GSM)",

@"iPhone5,2": @"iPhone 5(GSM+CDMA)",

@"iPhone5,3": @"iPhone 5c(GSM)",

@"iPhone5,4": @"iPhone 5c(GSM+CDMA)",

@"iPhone6,1": @"iPhone 5s(GSM)",

@"iPhone6,2": @"iPhone 5s(GSM+CDMA)",

@"iPad1,1": @"iPad",

@"iPad2,1": @"iPad 2(WiFi)",

@"iPad2,2": @"iPad 2(GSM)",

@"iPad2,3": @"iPad 2(CDMA)",

@"iPad2,4": @"iPad 2(WiFi Rev A)",

@"iPad2,5": @"iPad Mini(WiFi)",

@"iPad2,6": @"iPad Mini(GSM)",

@"iPad2,7": @"iPad Mini(GSM+CDMA)",

@"iPad3,1": @"iPad 3(WiFi)",

@"iPad3,2": @"iPad 3(GSM+CDMA)",

@"iPad3,3": @"iPad 3(GSM)",

@"iPad3,4": @"iPad 4(WiFi)",

@"iPad3,5": @"iPad 4(GSM)",

@"iPad3,6": @"iPad 4(GSM+CDMA)",

@"iPod1,1": @"iPod 1st Gen",

@"iPod2,1": @"iPod 2nd Gen",

@"iPod3,1": @"iPod 3rd Gen",

@"iPod4,1": @"iPod 4th Gen",

@"iPod5,1": @"iPod 5th Gen",

};

NSString *deviceName = commonNamesDictionary[machineName];

if (deviceName == nil) {

deviceName = machineName;

}

return deviceName;

}

@end

And use this method in your helper class to create a user friendly network status string using Reachability class instance:

- (NSString *)networkStatusString
{
  NetworkStatus networkStatus = [AppDel.reachability currentReachabilityStatus];
  
  /*NotReachable = 0,
  ReachableViaWiFi = 2,
  ReachableViaWWAN = 1*/
  
  switch (networkStatus) {
    case NotReachable:
      _networkStatusString = @"Нет соединения.";
      break;
    case ReachableViaWiFi: {
      _networkStatusString = @"Wi-Fi";
      break;
    }
    case ReachableViaWWAN: {
      _networkStatusString = @"WWAN";
      break;
    }
    default:
      break;
  }
  
  return _networkStatusString;
}

- (NSString *)networkStatusString

{

NetworkStatus networkStatus = [AppDel.reachability currentReachabilityStatus];

/*NotReachable = 0,

ReachableViaWiFi = 2,

ReachableViaWWAN = 1*/

switch (networkStatus) {

case NotReachable:

_networkStatusString = @"Нет соединения.";

break;

case ReachableViaWiFi: {

_networkStatusString = @"Wi-Fi";

break;

}

case ReachableViaWWAN: {

_networkStatusString = @"WWAN";

break;

}

default:

break;

}

return _networkStatusString;

}

References:
http://stackoverflow.com/questions/8292246/how-to-programmatically-differentiate-between-iphone-4-and-iphone-4s
http://iosdevelopertips.com/device/determine-if-iphone-is-3g-or-3gs-determine-if-ipod-is-first-or-second-generation.html

Alwawee

Monthly Archives: November 2013

Android Animation one after other

Code for Two Essential Buttons for iOS: Write a Review and Send a Letter To Developers

XCode 5 project doesn’t load – Solution

iOS Development