1 00:00:00,660 --> 00:00:07,740 So now let me talk about this ELSE IF statement here again because I think it is necessary for you to 2 00:00:07,740 --> 00:00:10,580 understand exactly what's going on here. 3 00:00:10,800 --> 00:00:17,610 So here we are saying that as if the key equals animals type and this means that if they use it has 4 00:00:17,610 --> 00:00:20,570 actually interacted with the animals type. 5 00:00:20,580 --> 00:00:22,930 So let me actually show you the emulator. 6 00:00:23,160 --> 00:00:29,520 So now as I said this is our emulator and our application is running on this emulator and here as you 7 00:00:29,520 --> 00:00:32,970 can see the key is actually animals typewrite. 8 00:00:32,970 --> 00:00:39,120 Here we are saying that if the key equals animal type and if the user actually interacted with the animals 9 00:00:39,150 --> 00:00:42,850 type then it's going to execute this LCF statement here. 10 00:00:42,870 --> 00:00:43,400 Right. 11 00:00:43,620 --> 00:00:46,610 So now let's actually look at this LCF statement. 12 00:00:46,620 --> 00:00:53,130 So inside this ELSE IF statement a block of code as you can see if you have actually a string set light 13 00:00:53,820 --> 00:01:00,150 and in Him is animal types so if you have a set of string values and the name is animal types assignment 14 00:01:00,150 --> 00:01:00,840 operator. 15 00:01:01,080 --> 00:01:06,600 So I referred to the name of this shirt the preferences object that we actually receive as an argument 16 00:01:06,600 --> 00:01:12,660 from this on shows preference changed Mefford so shared preferences that gets things set. 17 00:01:12,690 --> 00:01:18,090 So by calling this method gets things said we can actually get our set of string values from these shirt 18 00:01:18,090 --> 00:01:19,010 preferences. 19 00:01:19,440 --> 00:01:26,550 And we passed the key Alamance thought in order to specify that from which component we want to get 20 00:01:26,550 --> 00:01:32,000 these values from these animals type if you want to actually get these actually values. 21 00:01:32,010 --> 00:01:36,150 So now if I actually go inside these quotes underline preferences that makes them a file as you can 22 00:01:36,150 --> 00:01:39,810 see we have this multi-select list preference here. 23 00:01:40,260 --> 00:01:45,930 And we actually do pro-white that are key attributes for this multi-select preference in order to interact 24 00:01:45,930 --> 00:01:50,620 with this multi-select at least prevents it from Florida of course. 25 00:01:50,760 --> 00:01:56,370 And now let's actually go back into our main activity the java file here so Chaudry for analysis that 26 00:01:56,370 --> 00:02:03,520 gets said the plastic animals underlying tarp type come on and for the first value we passed the value. 27 00:02:03,750 --> 00:02:10,310 And that it's going to actually assign our animal the value of the animals type to these animal types. 28 00:02:10,320 --> 00:02:11,210 String set. 29 00:02:11,220 --> 00:02:14,750 So if so here we actually created an if statement. 30 00:02:14,850 --> 00:02:23,400 So if the animals type is not equal to all and animal animals type animal types that size is actually 31 00:02:23,400 --> 00:02:30,810 greater than zero if for example they use it at least selected one of these checkboxes as you can see 32 00:02:30,810 --> 00:02:34,010 here if you use that actually to check out one of these checkboxes. 33 00:02:34,190 --> 00:02:40,820 Then as you can see here if I click on OK here now it's going to execute this statement and it's going 34 00:02:40,840 --> 00:02:42,180 actually just. 35 00:02:42,220 --> 00:02:48,960 You are referring to this my animal Quest fragment that the type of animals inquiries and we passed 36 00:02:48,960 --> 00:02:51,760 this shirt preferences in order to get those values. 37 00:02:52,200 --> 00:02:53,800 And then we actually reset the quiz. 38 00:02:53,880 --> 00:02:57,080 So my only quiz AFFREIGHTMENT that really said animal quiz. 39 00:02:57,330 --> 00:03:00,950 And here we have actually an else statement as you can see here. 40 00:03:00,960 --> 00:03:10,320 So if the user has actually if use a do not does not want to actually have these wild animals or tame 41 00:03:10,320 --> 00:03:17,850 animals but inside the quiz OK if they use it does not want to actually select either of these options 42 00:03:18,270 --> 00:03:23,760 and then click on OK here then it's going to actually execute this Else statement. 43 00:03:23,760 --> 00:03:25,450 So now let me click on OK here. 44 00:03:25,560 --> 00:03:31,270 As you can see and notice one type must be selected right and divide elements is the default values 45 00:03:31,280 --> 00:03:34,490 Top Chef preferences that editor. 46 00:03:34,500 --> 00:03:41,100 So as you can see here you are actually creating an editor object shared preferences that editor editor 47 00:03:41,400 --> 00:03:45,090 assignment operator and and here we are actually referring to these shows. 48 00:03:45,110 --> 00:03:50,580 Preferences are objects that we receive as an argument from dismiss it as you can see here. 49 00:03:50,640 --> 00:03:51,180 Right. 50 00:03:51,210 --> 00:03:52,890 So Sheft references that edit. 51 00:03:52,950 --> 00:03:53,540 Right. 52 00:03:53,580 --> 00:03:56,960 So now that we actually are. 53 00:03:57,120 --> 00:04:03,210 Now we want to actually create an editor object in order to put our default value into our quiz. 54 00:04:03,300 --> 00:04:03,790 Right. 55 00:04:03,870 --> 00:04:07,340 So now as you can see animal types that at. 56 00:04:07,380 --> 00:04:10,090 So you want to add value to these animal types set. 57 00:04:10,350 --> 00:04:17,390 And here we call the Smurfette get strange and we passed this value or that string that default underline 58 00:04:17,430 --> 00:04:18,950 animal underline type. 59 00:04:18,960 --> 00:04:24,190 So if I actually hold the comment here on my keyboard and click on this value here as you can see disvalue 60 00:04:24,360 --> 00:04:25,590 is this right here right. 61 00:04:25,770 --> 00:04:30,030 Default underline animal underline type wide underline animals. 62 00:04:30,090 --> 00:04:35,410 So this value is going to be the default value of the type of the animals that you want to have inside 63 00:04:35,410 --> 00:04:36,130 the quiz. 64 00:04:36,420 --> 00:04:39,750 So now let me go back inside RMI an activity that have a file. 65 00:04:40,020 --> 00:04:43,140 And here again refers to the name of this editor object. 66 00:04:43,190 --> 00:04:51,060 So editor that put strings set and we passed the key and then we passed these animal types set. 67 00:04:51,120 --> 00:04:51,780 Right. 68 00:04:52,050 --> 00:04:54,380 And then we called editors that apply. 69 00:04:54,690 --> 00:05:00,990 So in this way we can actually put the animal types into are actually what cookies. 70 00:05:01,230 --> 00:05:07,490 And then we went to use that actually do not doesn't actually check these checkboxes. 71 00:05:07,670 --> 00:05:15,670 And and when he or she clicks on the OK here then it can actually provide a default animal type if it 72 00:05:15,670 --> 00:05:18,270 is actually wild animals for our quiz. 73 00:05:18,420 --> 00:05:19,200 Right. 74 00:05:19,290 --> 00:05:25,450 And the editors that apply and then we actually should host a message to the users show so toast that 75 00:05:25,690 --> 00:05:27,870 taste and we pass the context. 76 00:05:27,870 --> 00:05:29,230 Main activity that this. 77 00:05:29,340 --> 00:05:32,780 And then we pass this message art drink a toast message. 78 00:05:32,940 --> 00:05:36,070 And now let's actually let's actually hold the comments on a keyboard. 79 00:05:36,150 --> 00:05:40,400 And if you are using I mean machine just hold the control on your keyboard and then click on this value 80 00:05:40,410 --> 00:05:40,930 here. 81 00:05:41,070 --> 00:05:42,390 As you can see it was the message. 82 00:05:42,440 --> 00:05:44,720 One type of animals must be selected. 83 00:05:44,820 --> 00:05:46,940 The default value is wild animals. 84 00:05:47,190 --> 00:05:50,150 And now let's actually go back into our main activity that java file. 85 00:05:50,340 --> 00:05:53,940 And here we are specifying the duration of this message. 86 00:05:54,150 --> 00:05:57,120 And then we call the show my feet on this object. 87 00:05:57,120 --> 00:05:59,010 So now as you can see here. 88 00:05:59,550 --> 00:06:02,500 Let's actually look at this ELSE IF statement as you can see here. 89 00:06:02,640 --> 00:06:07,620 We checked this if statement for the keys that are equal to guesses. 90 00:06:07,740 --> 00:06:13,320 We actually take these as if statements for the keys that are equal to an animal type animal type as 91 00:06:13,320 --> 00:06:14,010 you can see here. 92 00:06:14,040 --> 00:06:19,500 After the curly brace of this key as you can see here after the end in calibers of this ELSE IF statement 93 00:06:19,770 --> 00:06:23,310 right we actually created another Else statement here. 94 00:06:23,490 --> 00:06:25,660 So else if that equals. 95 00:06:25,890 --> 00:06:27,020 Underline it. 96 00:06:27,180 --> 00:06:33,480 So here we are taking that up whenever the user for example is changing they're actually the front of 97 00:06:33,480 --> 00:06:35,550 the application as you can see here. 98 00:06:35,550 --> 00:06:43,020 So whenever the user clicks on these forms for queries and when he or she changes one of these or when 99 00:06:43,020 --> 00:06:46,020 he or she changes they quit the front of the quiz. 100 00:06:46,020 --> 00:06:49,750 So for example chant 5 and now it says new changes are applied. 101 00:06:49,770 --> 00:06:53,660 And now if I go back as you can see here the phone is changed right. 102 00:06:53,850 --> 00:07:01,980 So else if that equals cuius underlined font then we call this object my animalcules fragment that modified 103 00:07:01,980 --> 00:07:08,450 cuius font shirt preferences and then we refer to this object my animalcules phone that reset animal 104 00:07:08,480 --> 00:07:10,150 quits right. 105 00:07:10,260 --> 00:07:14,670 And then as you can see here you are actually creating another as if statement. 106 00:07:14,670 --> 00:07:20,390 So this LCP statement is full of and the user actually changes the baculum color of the quiz. 107 00:07:20,440 --> 00:07:25,320 So elf if cheap that equals Q is underlined by going on Underland color. 108 00:07:25,320 --> 00:07:30,030 Then again we refer to the name of this fragment object as you can see my animal quest for argument 109 00:07:30,300 --> 00:07:36,210 that modified by going on colored shed fences as you can see here this object is an object that he created 110 00:07:36,210 --> 00:07:38,530 from this classman activity fragments right. 111 00:07:38,670 --> 00:07:43,980 And by creating an object from this class we can actually access the methods that are inside of this 112 00:07:43,980 --> 00:07:45,420 main activity fragment class. 113 00:07:45,540 --> 00:07:48,660 And that's why you can see that we can call these methods here right. 114 00:07:48,660 --> 00:07:52,100 So you already know about this stuff. 115 00:07:52,380 --> 00:07:57,780 I actually talked about these are classes and object oriented programming. 116 00:07:58,010 --> 00:08:01,670 And when I actually taught you the Java programming language. 117 00:08:01,890 --> 00:08:07,570 So my quest for argument that modified by Canonical of shirt preferences and my animal cuius for that 118 00:08:07,580 --> 00:08:09,550 the recent animal is right. 119 00:08:10,050 --> 00:08:16,320 And here finally we are actually showing our Toastmaster the user Sotos that make just make text the 120 00:08:16,320 --> 00:08:22,110 main activity that these are that string that TOSed message as I can see here we are actually referring 121 00:08:22,110 --> 00:08:23,570 to this text message. 122 00:08:23,580 --> 00:08:33,520 So now let's get you to change this toaster message to actually change change message bright and then 123 00:08:33,550 --> 00:08:37,690 as you can see we are actually specifying the duration of these Toastmasters and then we are calling 124 00:08:37,690 --> 00:08:39,830 this Shoma if an undisclosed object. 125 00:08:39,850 --> 00:08:44,920 So now as you can see here we haven't still provided us an Austrian resource for this change message. 126 00:08:44,920 --> 00:08:51,320 So now let's actually just copy disvalue here and now let's actually go inside our strings that exemplified. 127 00:08:51,520 --> 00:08:58,350 And here let's create a string of stores and for the name just paste that value here change underline 128 00:08:58,360 --> 00:09:00,180 message and enclose this tag. 129 00:09:00,340 --> 00:09:04,010 And for the value just type in here it changes and new changes 130 00:09:07,190 --> 00:09:08,240 are applied. 131 00:09:10,370 --> 00:09:10,950 Right. 132 00:09:11,360 --> 00:09:14,640 And now let's actually go back into the main activity that double file. 133 00:09:14,790 --> 00:09:17,180 And now as you can see here the error is gone. 134 00:09:17,320 --> 00:09:18,520 Right. 135 00:09:18,520 --> 00:09:21,280 So hopefully that makes sense. 136 00:09:21,640 --> 00:09:26,210 As you can see here let's look at this here again unshelled friends change Meffert. 137 00:09:26,380 --> 00:09:30,680 We actually assign the value true for settings changed boolean variable. 138 00:09:30,820 --> 00:09:36,190 We are checking that if the user actually interacted with these guesses here with a number of guesses 139 00:09:36,190 --> 00:09:39,400 options as you can see here then we are going to execute this line of. 140 00:09:39,520 --> 00:09:46,600 These lines of code here first we can actually modify animal rules based on the users actually choose 141 00:09:46,600 --> 00:09:52,450 based off based on the users number of guesses options as you can see here for example the user wants 142 00:09:52,450 --> 00:09:58,350 to actually have a Fargus options or maybe the user wants to have sex gives options. 143 00:09:58,360 --> 00:10:05,170 So based on these decisions based on these values we're going to actually change the number of options 144 00:10:05,170 --> 00:10:07,300 that we have inside our quiz. 145 00:10:07,330 --> 00:10:08,020 Right. 146 00:10:08,370 --> 00:10:13,540 And now as you can see here we are here we have this statement and we are checking that if that user 147 00:10:13,810 --> 00:10:16,940 has actually interacted with the animals type as you can see here. 148 00:10:17,080 --> 00:10:23,280 So if you have two checkboxes here and we have also these at if and if else statement here Enceladus 149 00:10:23,410 --> 00:10:28,300 LCF statement that you can see in order to check that the user has actually checked at least one of 150 00:10:28,300 --> 00:10:30,860 these checkboxes or when you went to use that. 151 00:10:30,870 --> 00:10:35,580 For example did not text actually of one of these checkboxes as you can see here. 152 00:10:35,590 --> 00:10:42,140 So if are actually controlling these decisions here as you can see here and here we have this. 153 00:10:42,140 --> 00:10:42,520 Else. 154 00:10:42,570 --> 00:10:48,520 Else if statement for them and they use that actually changes the format of the of the taste of the 155 00:10:48,520 --> 00:10:51,370 patents that we have inside our coolies as you can see here. 156 00:10:51,370 --> 00:10:57,340 So if we call my animalcules for arguments that modify cuius font shirt and says My animalcules for 157 00:10:57,340 --> 00:11:03,850 argument that reset animalcules and then we have this Ellis statement that equals It is underlined by 158 00:11:03,980 --> 00:11:06,150 an underlined color as you can see here. 159 00:11:06,310 --> 00:11:07,900 So it does Elsy statement. 160 00:11:07,900 --> 00:11:13,380 Here is what I actually when the it changes the background color of this application. 161 00:11:13,390 --> 00:11:18,910 As you can see here the back uncolored of this quis and we actually calling that we are actually calling 162 00:11:18,910 --> 00:11:19,550 these methods. 163 00:11:19,590 --> 00:11:22,260 And this my animal Ahlquist Fleischman object. 164 00:11:22,490 --> 00:11:27,540 And we are finally set the reset in the quiz my animal quiz fragments that roosted animal quiz. 165 00:11:27,820 --> 00:11:33,910 And finally we are actually showing this message to the user to toast the toast that makes toast main 166 00:11:33,910 --> 00:11:39,740 activity that these are that string that change underlying message tostada letter short that shock. 167 00:11:40,060 --> 00:11:44,680 And now let's you to go inside our uncreate Smurfette here. 168 00:11:44,740 --> 00:11:45,650 As you can see. 169 00:11:45,820 --> 00:11:51,100 So now let's actually I'm going to get need to actually to paste in some more lines of code here. 170 00:11:51,400 --> 00:11:57,190 Because when the application is started up Vinita and when the uncreate Meffert is actually called we 171 00:11:57,190 --> 00:12:02,560 need to actually get some of those changes that we actually saved to the shared preferences and we need 172 00:12:02,560 --> 00:12:04,690 to actually apply them to our quiz. 173 00:12:04,750 --> 00:12:08,060 So for example now back in uncolored is yellow. 174 00:12:08,080 --> 00:12:08,400 Right. 175 00:12:08,410 --> 00:12:12,030 And if I click on this by here as you can see we have six Yes options right. 176 00:12:12,190 --> 00:12:15,630 And if we actually close this application here. 177 00:12:16,030 --> 00:12:21,100 Now let me close these applications and if you want to actually open this application here again as 178 00:12:21,100 --> 00:12:26,170 you can see we need to actually get those changes from the shared preferences here because at this time 179 00:12:26,170 --> 00:12:30,670 the uncreate method is going to be called and we need to actually get those changes that is saved to 180 00:12:30,670 --> 00:12:32,000 the shared preferences. 181 00:12:32,020 --> 00:12:34,670 So now I'm going to paste in some lines of code here. 182 00:12:34,670 --> 00:12:39,790 Inside is uncreate Smurfette inside the main activity class and then I'm going to explain to you of 183 00:12:39,790 --> 00:12:41,130 what's going on here.