1 00:00:00,330 --> 00:00:05,440 So now as you can see our application is actually running on the emulator here. 2 00:00:05,490 --> 00:00:06,020 OK. 3 00:00:06,150 --> 00:00:13,170 And we can see these values inside of these linearly aesthetical and I can actually scroll down in order 4 00:00:13,170 --> 00:00:19,020 to see the other values and I can actually check these checkboxes here as you can see on here. 5 00:00:19,050 --> 00:00:24,600 As you can see here I can't check these radio buttons as you can see here. 6 00:00:24,600 --> 00:00:30,030 So now let's actually change the background color of this linearly out to our lighter color. 7 00:00:30,110 --> 00:00:30,680 OK. 8 00:00:30,810 --> 00:00:38,370 So here I can just go back and say this design type here and now I can actually select this linearly 9 00:00:38,370 --> 00:00:39,520 outwards Tikal here. 10 00:00:39,720 --> 00:00:47,370 And for the background attribute as you can see here you have these going out here silica is linearly 11 00:00:47,450 --> 00:00:52,230 out and for the background we can actually assign another value. 12 00:00:52,230 --> 00:01:02,320 For example hash tag F F F F and one to free and then press enter on your keyboard. 13 00:01:02,640 --> 00:01:08,590 And now as you can see the background color of our linearly aesthetical is actually changed. 14 00:01:08,680 --> 00:01:13,650 OK so now let's actually run our project again and see what happens. 15 00:01:13,650 --> 00:01:19,220 So as you can see in our application is running on the simulator and we can see these values here. 16 00:01:19,230 --> 00:01:19,740 OK. 17 00:01:20,040 --> 00:01:24,450 So I can get you to take these checkboxes and here I can get you to use the stick bar. 18 00:01:24,690 --> 00:01:30,720 I can actually rate here and here as you can see these are the radio radio buttons that are inside our 19 00:01:30,720 --> 00:01:31,300 radio group. 20 00:01:31,320 --> 00:01:31,860 OK. 21 00:01:31,920 --> 00:01:33,220 So I can take them here. 22 00:01:33,300 --> 00:01:33,850 OK. 23 00:01:34,200 --> 00:01:38,850 So now let's actually go back and say this main activity that are right here and now let's actually 24 00:01:38,850 --> 00:01:41,870 did it these lines of code that are related to the Options menu. 25 00:01:41,960 --> 00:01:45,800 OK so now we can actually put our own codes here. 26 00:01:45,920 --> 00:01:46,290 OK. 27 00:01:46,320 --> 00:01:51,750 So now I want to actually declare some objects inside is main activity class. 28 00:01:51,750 --> 00:01:56,400 So here I'm going actually pasting some lines of code here and then I'm going to explain to you what's 29 00:01:56,400 --> 00:01:57,560 going on here. 30 00:01:57,570 --> 00:02:01,060 So as you can see here these are the lines of code that they actually paste that here. 31 00:02:01,110 --> 00:02:01,740 OK. 32 00:02:02,040 --> 00:02:07,920 And here as you can see I actually did yclept six check actually eight checkbox objects OK checkbox 33 00:02:07,950 --> 00:02:11,430 number one number two number three number four number five. 34 00:02:11,430 --> 00:02:17,370 Number six seven eight and actually declared an object of type but he had as you can see the name of 35 00:02:17,370 --> 00:02:19,040 this object is Bar. 36 00:02:19,490 --> 00:02:24,960 Another object of type rating bar rating bar and he had as you can see I declared an object of type 37 00:02:24,960 --> 00:02:25,890 radio group. 38 00:02:25,890 --> 00:02:26,370 OK. 39 00:02:26,430 --> 00:02:32,790 As you can see here and it actually declared for different objects of type radio about local radio about 40 00:02:32,870 --> 00:02:35,860 one radio button to add radio button free. 41 00:02:35,910 --> 00:02:41,950 So now inside of this uncreate Meffert I want to actually instantiate these objects that they actually 42 00:02:41,950 --> 00:02:44,660 are declared inside this main activity class. 43 00:02:44,700 --> 00:02:45,090 OK. 44 00:02:45,120 --> 00:02:49,920 So inside this uncreate Smurfette I'm going to actually pasting some lines of code here and then I'm 45 00:02:49,920 --> 00:02:51,770 going to explain to you what's going on here. 46 00:02:51,780 --> 00:02:52,260 OK. 47 00:02:52,440 --> 00:02:55,850 So as you can see here these are the lines of code that they actually paste that here. 48 00:02:56,010 --> 00:02:57,860 And you can see these values here. 49 00:02:58,020 --> 00:03:01,810 And as you can see first of all I actually instantiated this checkbooks object. 50 00:03:01,830 --> 00:03:05,420 And here I actually cast that this object to a checkbox object. 51 00:03:05,490 --> 00:03:08,330 And here I refer to this ID checkbooks number one. 52 00:03:08,520 --> 00:03:14,520 And again I did the same thing with this check box too and I tested this object to a checkbox checkbooks 53 00:03:14,520 --> 00:03:18,560 object and I referred to this checkbox number two. 54 00:03:18,630 --> 00:03:24,210 And here as you can see I instantiated this checkbox number for the checkbox number for the checkbox 55 00:03:24,210 --> 00:03:28,840 number for as you can see here are that the checkbox number for checkbox number 5. 56 00:03:29,100 --> 00:03:36,060 And here I thought Id take box number five checkbox number 6 and checkbooks number 7 and checkbooks 57 00:03:36,060 --> 00:03:36,580 number 8. 58 00:03:36,600 --> 00:03:37,210 OK. 59 00:03:37,380 --> 00:03:42,780 And here I actually instantiate this CBOT object and here as you can see I actually cast that this object 60 00:03:43,080 --> 00:03:44,570 to see what object. 61 00:03:44,580 --> 00:03:46,910 And here are you referring to the IDC report. 62 00:03:47,220 --> 00:03:50,970 And here as you can see I instantiated this rating what object. 63 00:03:50,970 --> 00:03:56,680 And as you can see here I cast this object to R-rating But object and here as you can see the effect 64 00:03:57,260 --> 00:04:03,990 I referred to the ID rating but here as you can see here and here as you can see I actually instantiated 65 00:04:04,040 --> 00:04:07,670 this radio object and hit as you can see it's showing us and at it. 66 00:04:07,680 --> 00:04:08,130 OK. 67 00:04:08,250 --> 00:04:12,840 So let's actually hold that our mouse pointer over the area and see what's the error. 68 00:04:13,050 --> 00:04:15,600 As you can see it's just cannot resile symbol. 69 00:04:15,630 --> 00:04:16,550 Radio Group. 70 00:04:16,560 --> 00:04:18,920 So we don't have any ID card. 71 00:04:18,920 --> 00:04:23,740 Actually the radio group that is actually assigned to this radio group object OK. 72 00:04:23,880 --> 00:04:28,740 So here I can actually go in and say this content underline minute example and here as you can see in 73 00:04:28,740 --> 00:04:31,340 say this componentry section we have this lady here. 74 00:04:31,350 --> 00:04:37,830 OK so now let's actually find the attributes of this radio group as you can see this I.D. doesn't have 75 00:04:37,890 --> 00:04:39,340 a default value. 76 00:04:39,370 --> 00:04:44,800 OK so here I need to actually assign a value for this radio group object. 77 00:04:44,910 --> 00:04:53,430 So I can just type in radio group as an ID OK group and then our press Enter key on your keyboard. 78 00:04:53,430 --> 00:04:56,970 So let's ask you to go back and say this main activity that double fight and now as you can see the 79 00:04:56,970 --> 00:04:58,220 error is gone. 80 00:04:58,530 --> 00:04:58,800 OK. 81 00:04:58,800 --> 00:05:04,900 As you can see here we are instantiating these arrays you abandoned objects as you can see I am actually 82 00:05:04,900 --> 00:05:11,190 casting this object to write you about it and find if by id artist Id dot radio button one. 83 00:05:11,230 --> 00:05:11,510 OK. 84 00:05:11,530 --> 00:05:15,220 And here as you can see radio button to lead you about in free. 85 00:05:15,310 --> 00:05:15,790 OK. 86 00:05:15,790 --> 00:05:21,010 So now I want to actually make these checkboxes as you can see here. 87 00:05:21,140 --> 00:05:26,900 I want to make this a checkbox says a listener to the clicks that the user made on these checkboxes 88 00:05:26,990 --> 00:05:27,180 here. 89 00:05:27,190 --> 00:05:27,850 OK. 90 00:05:28,000 --> 00:05:31,100 So you want to do some think of it these checkboxes. 91 00:05:31,120 --> 00:05:31,600 OK. 92 00:05:31,660 --> 00:05:34,770 And then I want to make them a listener to the clicks of the user. 93 00:05:34,780 --> 00:05:35,320 OK. 94 00:05:35,320 --> 00:05:39,460 So in order to do that OK I'm going to actually paste in some lines of code here and then I'm going 95 00:05:39,460 --> 00:05:41,570 to explain to you what's going on here. 96 00:05:41,590 --> 00:05:44,930 So as you can see here these are the lines of code that they actually pasted here. 97 00:05:44,980 --> 00:05:50,380 And as you can see here I am actually making each of these eight checkboxes a listener or to the police 98 00:05:50,380 --> 00:05:50,850 of the user. 99 00:05:50,850 --> 00:05:51,300 OK. 100 00:05:51,310 --> 00:05:57,820 So in order to do that you need to actually call this set on checked change a listener on this or checkbox 101 00:05:57,820 --> 00:05:58,120 object. 102 00:05:58,130 --> 00:05:58,680 OK. 103 00:05:58,750 --> 00:06:04,630 And as you can see here we actually call this if it's set on check to change the center on each of these 104 00:06:04,810 --> 00:06:11,350 checkbox objects and inside the apprentice's as you can see if you need to actually specify the context. 105 00:06:11,350 --> 00:06:14,320 OK so the context is the class main activity that this. 106 00:06:14,350 --> 00:06:14,890 OK. 107 00:06:15,070 --> 00:06:21,220 So in order to actually make these checkboxes or listen to the clicks of the user you need to actually 108 00:06:21,220 --> 00:06:22,650 implement an interface. 109 00:06:22,660 --> 00:06:23,840 Here in our class. 110 00:06:23,920 --> 00:06:26,200 So here I can just type in implements. 111 00:06:26,580 --> 00:06:32,070 Compound compound BOTTEN OK. 112 00:06:32,230 --> 00:06:35,370 Compound button dot on checked. 113 00:06:35,380 --> 00:06:36,590 Change listener. 114 00:06:36,760 --> 00:06:37,270 OK. 115 00:06:37,450 --> 00:06:43,990 So as you can see he had to actually implement this interface in order to actually make these checkboxes 116 00:06:44,010 --> 00:06:45,980 or listening to the police of the user. 117 00:06:46,090 --> 00:06:51,370 And if I actually hovered over this area and as you can see it says classman activity must either be 118 00:06:51,370 --> 00:06:57,400 declared abstract or implement abstract method and take the change as you can see here this method. 119 00:06:57,400 --> 00:07:01,030 So now let's actually implement that method in our class. 120 00:07:01,030 --> 00:07:08,950 So here I can just like click locally in inside our class and then click on generate and here you can 121 00:07:08,950 --> 00:07:12,040 actually click on implement methods. 122 00:07:12,340 --> 00:07:16,080 So as you can see here this is the method that you need to actually implement in our class as he had 123 00:07:16,090 --> 00:07:21,490 said he had it says Android that visit that compound button that unchecked the change to the Senate. 124 00:07:21,490 --> 00:07:21,930 OK. 125 00:07:21,940 --> 00:07:23,920 So it is interface as you can see. 126 00:07:23,920 --> 00:07:28,990 You can see this letter inside this little green circle here. 127 00:07:29,050 --> 00:07:29,490 OK. 128 00:07:29,620 --> 00:07:32,380 And this is the method that is inside of this interface. 129 00:07:32,490 --> 00:07:33,880 Ok unchecked change. 130 00:07:33,880 --> 00:07:35,890 So here I just need to click on OK. 131 00:07:36,130 --> 00:07:40,330 And as you can see here this is the method that you need to actually implement and you need to actually 132 00:07:40,330 --> 00:07:43,580 overwrite this method here inside your class. 133 00:07:43,960 --> 00:07:49,780 So now our inside of the Smurfette I'm going actually are pasting some lines of code and then I'm going 134 00:07:49,780 --> 00:07:52,290 to explain to you what's going on here. 135 00:07:52,300 --> 00:07:57,050 So as you can see here I actually pasted this sweetest statement inside this method. 136 00:07:57,070 --> 00:07:57,500 OK. 137 00:07:57,610 --> 00:08:02,090 And now we can actually explain to you what what does this switch statement do here. 138 00:08:02,110 --> 00:08:02,790 OK. 139 00:08:03,280 --> 00:08:07,540 So now as you can see I created a switch statement inside the Smurfit unchecked to change. 140 00:08:07,660 --> 00:08:10,320 And this MF it actually accepts two arguments. 141 00:08:10,450 --> 00:08:16,160 The first one is button view and the actually the type of this button is compound button and then the 142 00:08:16,240 --> 00:08:21,410 next one is is checked and the type of this argument is Boullion. 143 00:08:21,490 --> 00:08:27,190 And remember that here we are actually implementing compound button that Antek change the center because 144 00:08:27,790 --> 00:08:32,580 we can actually check our multiple checkboxes in our layout. 145 00:08:32,590 --> 00:08:39,310 As you can see here this is because of this feature we are actually implementing the compound button 146 00:08:39,580 --> 00:08:45,550 that took changelessness because because we can actually to change change the value of multiple checkboxes 147 00:08:45,820 --> 00:08:46,900 in our program. 148 00:08:46,900 --> 00:08:47,520 OK. 149 00:08:47,830 --> 00:08:51,880 So as you can see here insight is unchecked to change Meffert. 150 00:08:51,970 --> 00:08:58,490 Here if you have an argument of type compound button and the name of this argument is bartend view. 151 00:08:58,630 --> 00:09:01,460 And we have this is checked boolean argument here. 152 00:09:01,480 --> 00:09:02,200 OK. 153 00:09:02,200 --> 00:09:04,600 And we have this switch statement here. 154 00:09:04,780 --> 00:09:05,380 OK. 155 00:09:05,620 --> 00:09:13,630 And inside this switch statement as you can see here are actually specified that up button view. 156 00:09:13,750 --> 00:09:14,230 OK. 157 00:09:14,230 --> 00:09:18,020 So here we need to actually differentiate between each of these checkboxes. 158 00:09:18,040 --> 00:09:18,610 OK. 159 00:09:18,610 --> 00:09:23,470 So if you need to actually know which one of these checkboxes the use that actually checked. 160 00:09:23,500 --> 00:09:23,940 OK. 161 00:09:24,130 --> 00:09:28,360 So in order to know that first of all we need to actually have this spot in view. 162 00:09:28,360 --> 00:09:29,010 OK. 163 00:09:29,020 --> 00:09:34,810 So these are all but interviews with all of these checkboxes as you can see here are each of these are 164 00:09:34,810 --> 00:09:36,800 actually all of these are button views. 165 00:09:36,820 --> 00:09:37,250 OK. 166 00:09:37,360 --> 00:09:40,250 So here we have both in view dot gets ID. 167 00:09:40,390 --> 00:09:40,930 OK. 168 00:09:40,930 --> 00:09:47,230 So by actually getting the ID of these components in our screen we can actually specify that of which 169 00:09:47,230 --> 00:09:50,580 one of these checkboxes they use that actually checked. 170 00:09:50,620 --> 00:09:51,080 OK. 171 00:09:51,250 --> 00:09:57,560 So button in that get ID Chase are thought Id the checkbox number one. 172 00:09:57,610 --> 00:09:58,120 OK. 173 00:09:58,360 --> 00:10:03,350 So if you have a checkbox an I.D. that is actually its name is check box number one. 174 00:10:03,360 --> 00:10:05,050 So this one is checkbooks number one. 175 00:10:05,100 --> 00:10:05,710 OK. 176 00:10:06,000 --> 00:10:12,990 So if the checkbox is a checkbox number of one then if that that actually checked it just checked this 177 00:10:13,140 --> 00:10:17,420 checkbox number of one then we have an if statement here it is checked. 178 00:10:17,430 --> 00:10:17,840 OK. 179 00:10:17,940 --> 00:10:23,940 So if the value of this check box is actually checked so that's because so that's why you have these 180 00:10:24,510 --> 00:10:26,290 Boullion argument here. 181 00:10:26,400 --> 00:10:27,390 Bulliet is checked. 182 00:10:27,420 --> 00:10:32,160 So this argument actually allows us to find out whether the checkbox is checked or not. 183 00:10:32,190 --> 00:10:32,670 OK. 184 00:10:32,820 --> 00:10:38,700 So if the value of this is checked a boolean value but is true then it's going to execute this line 185 00:10:38,700 --> 00:10:41,040 of code instead of the curly braces of this statement. 186 00:10:41,130 --> 00:10:46,700 Here I can just type in boxing is checked OK. 187 00:10:46,830 --> 00:10:50,700 And here as you can see the first argument is the context. 188 00:10:50,730 --> 00:10:54,870 This next one is actually for actually showing the text to the user. 189 00:10:54,900 --> 00:10:59,580 And here we are actually specifying the duration of the text that we are that we want to actually show 190 00:10:59,580 --> 00:11:00,280 to the user. 191 00:11:00,420 --> 00:11:06,030 And here we need to actually call the show effect on this object on this toast object in order to actually 192 00:11:06,540 --> 00:11:08,440 to actually show this object to the user. 193 00:11:08,460 --> 00:11:10,130 OK it is toast object. 194 00:11:10,130 --> 00:11:14,480 And now as you can see let's actually see the other values here. 195 00:11:14,550 --> 00:11:16,980 So as you can see here we put this break statement. 196 00:11:16,980 --> 00:11:19,530 So it's going to actually break out of this break. 197 00:11:19,620 --> 00:11:20,510 A switch statement.