1 00:00:00,460 --> 00:00:04,950 And now as you can see after this line of quote here as you can see it is in its day in court and just 2 00:00:04,950 --> 00:00:07,880 creating an object of intent. 3 00:00:08,040 --> 00:00:10,000 And here I am initialising this object. 4 00:00:10,050 --> 00:00:10,660 OK. 5 00:00:10,860 --> 00:00:16,170 So as you can see the error is gone and we have the second activity that last in our project and now 6 00:00:16,350 --> 00:00:20,620 I can just type in start activity for result. 7 00:00:20,910 --> 00:00:23,090 So why did they actually put this method here. 8 00:00:23,100 --> 00:00:29,950 Why didn't I put this thought activity as you can see here before we put this stuff activity here. 9 00:00:30,240 --> 00:00:31,490 And we just passed the intent. 10 00:00:31,500 --> 00:00:32,110 Right. 11 00:00:32,310 --> 00:00:39,210 So now in this project I'm want to actually get some data from the second activity and when the user 12 00:00:39,210 --> 00:00:45,600 clicks on the back button under a mobile device the information is going to be sent to the first activity 13 00:00:45,600 --> 00:00:47,460 which is going to be the main activity OK. 14 00:00:47,580 --> 00:00:53,430 So but this time all you want to send data from the this is activity Underland second. 15 00:00:53,580 --> 00:00:59,290 You want to send data from this activity Underland second to this activity underline main the example. 16 00:00:59,570 --> 00:01:04,770 OK so in so this activity underlines that search and that meant that example here I want to design the 17 00:01:04,770 --> 00:01:08,250 user interface of this XML file here. 18 00:01:08,460 --> 00:01:11,820 So as it see here again I mean it was specified at Feme. 19 00:01:11,820 --> 00:01:15,750 So just click on this app from here and then Mattioli light. 20 00:01:16,110 --> 00:01:21,810 And here I just need to select this one material that light that thought dark action and then click 21 00:01:21,810 --> 00:01:23,520 on OK here. 22 00:01:23,520 --> 00:01:31,220 So now let's actually drag our linearly out vertical at the center of this relatively out here and here. 23 00:01:31,230 --> 00:01:37,980 This time I'm on to actually track some text fields into this linearly as vertical so in is text fields 24 00:01:37,980 --> 00:01:39,590 for that as you can see here. 25 00:01:39,990 --> 00:01:41,940 We've got these text fields here. 26 00:01:42,000 --> 00:01:49,680 So just write a plain text field into this linearly as vertical and put it at the center of this linearly 27 00:01:49,680 --> 00:01:54,140 as vertical and end up and this up takes the edge it takes here. 28 00:01:54,140 --> 00:01:55,730 It is a textfield. 29 00:01:55,920 --> 00:01:59,670 And for the ID just type in here it is the name. 30 00:02:00,300 --> 00:02:02,710 And then press Enter key on your keyboard. 31 00:02:02,730 --> 00:02:08,340 So here inside these are properties section that is actually related to this EDT name to it it takes 32 00:02:08,340 --> 00:02:08,850 here. 33 00:02:09,060 --> 00:02:15,400 Let's actually find the hint attribute as you can see here we have this attribute here. 34 00:02:15,540 --> 00:02:16,720 So for the hint. 35 00:02:16,860 --> 00:02:17,830 Just type in here. 36 00:02:17,850 --> 00:02:20,420 Enter name. 37 00:02:20,990 --> 00:02:25,280 OK so this is going to be the hint for this eddy takes here. 38 00:02:25,290 --> 00:02:30,450 So now let's actually direct another text field into this linearly at vertical. 39 00:02:30,540 --> 00:02:37,580 So here inside is a text fields folder just select just plain takes here and put it below this and it 40 00:02:37,590 --> 00:02:44,450 takes this text with here and at the center of this linearly as vertical and double click on it. 41 00:02:44,520 --> 00:02:51,270 And for the ID to step in here it is he emailed and in person and Turkey on your keyboard. 42 00:02:51,390 --> 00:02:56,360 So for the hint attribute that is actually related to this as it takes here just step in here. 43 00:02:56,400 --> 00:02:58,920 Enter email. 44 00:02:59,460 --> 00:02:59,970 OK. 45 00:03:00,090 --> 00:03:01,250 Dot dot dot. 46 00:03:01,590 --> 00:03:02,950 And now this it right. 47 00:03:03,060 --> 00:03:04,530 Another plane takes years. 48 00:03:04,530 --> 00:03:10,070 Just select this plane takes you and put it below this it takes here and double click on it. 49 00:03:10,170 --> 00:03:16,400 For the idea to stay in here EDT username and then person enter key on your keyboard. 50 00:03:16,410 --> 00:03:23,690 So for the hint attribute to step in here enter username OK. 51 00:03:24,400 --> 00:03:31,130 And now let's actually write another plain text and other text field into these linearly vertical. 52 00:03:31,180 --> 00:03:38,300 So just like this a plane takes here and put it below this it takes here double click on it and for 53 00:03:38,350 --> 00:03:45,620 the ID just step in here it the password and then person enter key on your keyboard. 54 00:03:45,640 --> 00:03:50,490 So here as you can see here we have this paint attribute that is related to this added text. 55 00:03:50,500 --> 00:03:53,230 So for the hint attribute just typing here. 56 00:03:53,230 --> 00:03:55,520 Enter password. 57 00:03:56,320 --> 00:04:02,240 And then that dot dot and then press on Enter key on your keyboard so you can see here we have these 58 00:04:02,830 --> 00:04:04,250 details for the e-mail. 59 00:04:04,420 --> 00:04:05,660 So this actually selected. 60 00:04:05,740 --> 00:04:08,680 And he had inside these properties section here. 61 00:04:08,710 --> 00:04:10,230 Let's find the food type. 62 00:04:10,230 --> 00:04:11,190 As you can see here. 63 00:04:11,380 --> 00:04:14,030 So if you have this in food type attribute. 64 00:04:14,050 --> 00:04:21,550 So just open this attribute here and now just a checklist checkbox that says text e-mail address so 65 00:04:21,550 --> 00:04:23,770 the input type is going to be e-mail address. 66 00:04:23,770 --> 00:04:24,200 OK. 67 00:04:24,370 --> 00:04:28,090 So the user needs to actually enter an e-mail address. 68 00:04:28,090 --> 00:04:30,930 And here as you can see if you have this Enter password. 69 00:04:31,000 --> 00:04:35,160 So let's actually open this in food type that is related to this. 70 00:04:35,210 --> 00:04:35,920 It takes. 71 00:04:36,090 --> 00:04:42,930 And for the input type just check the check box that says a text password as you can see here. 72 00:04:42,940 --> 00:04:47,950 So the user needs to enter a password as it gets it's going actually it's not going to show the user 73 00:04:48,010 --> 00:04:49,580 the password that is entered inside. 74 00:04:49,720 --> 00:04:54,110 This is the text here because it's in food type is going to be password. 75 00:04:54,400 --> 00:05:00,580 So now let's actually drag our button below what is inside this linearly as vertical and below this 76 00:05:00,630 --> 00:05:01,630 it takes here. 77 00:05:01,810 --> 00:05:07,360 So inside these widgets folder we have this button just select it and put it below this. 78 00:05:07,420 --> 00:05:10,410 And it takes and inside is nearly vertical. 79 00:05:10,420 --> 00:05:16,420 Just put it at the center of this linearly as Westacott and then for the lay out which is kind of ideal 80 00:05:16,420 --> 00:05:21,490 match parent as you can see here and then click on the button here. 81 00:05:21,490 --> 00:05:27,790 And for the text just typing in here Don exclamation mark and for the idea just they've been here PTEN 82 00:05:27,790 --> 00:05:28,830 done. 83 00:05:29,200 --> 00:05:31,650 And then press enter on your keyboard. 84 00:05:32,020 --> 00:05:40,060 So now let's actually go inside the second activity of a file here and now I want to actually declare 85 00:05:40,120 --> 00:05:42,000 some text objects here. 86 00:05:42,160 --> 00:05:43,160 So it takes. 87 00:05:43,240 --> 00:05:46,910 So again I can actually declare these objects in only one line. 88 00:05:46,990 --> 00:05:50,440 So I just referred to the name of this editrix class. 89 00:05:50,440 --> 00:05:58,090 And now the name of the first object is going to be EDT name Karma and the name of the second object 90 00:05:58,090 --> 00:05:59,860 is going to be EDT. 91 00:06:00,100 --> 00:06:09,950 E-mail comma the name of the word object is going to be EDT a user name come up and the name of the 92 00:06:10,360 --> 00:06:13,600 object is going to be EDT password. 93 00:06:14,230 --> 00:06:16,920 And then I need to put a semicolon at the end of my statement. 94 00:06:16,930 --> 00:06:17,420 OK. 95 00:06:17,530 --> 00:06:22,810 So I actually declared for objects of type takes Eadie takes in only one line. 96 00:06:22,810 --> 00:06:24,170 As you can see here. 97 00:06:24,190 --> 00:06:27,940 So now let's actually go inside this uncreate Smurfette. 98 00:06:28,270 --> 00:06:28,980 OK. 99 00:06:29,020 --> 00:06:32,220 And here I want to actually instantiate these objects. 100 00:06:32,230 --> 00:06:35,370 These objects that are actually of type text. 101 00:06:35,470 --> 00:06:39,300 So here the first object that I want to instantiate is this object is the name. 102 00:06:39,640 --> 00:06:43,160 So here I can save an editing name assignment operator. 103 00:06:43,330 --> 00:06:51,960 And here I need to cast this object to a text object find you by I-T are that Id dot ity name. 104 00:06:52,460 --> 00:06:55,970 And then I need to put a semicolon at the end of my statement. 105 00:06:55,990 --> 00:06:58,110 The second object is going to be Editta email. 106 00:06:58,120 --> 00:07:03,780 So here I can just say I mean it is e-mail that it is email assignment operator. 107 00:07:03,910 --> 00:07:12,600 And here I need to cast this object away as it takes object OK find view ID are thought Id that ADT 108 00:07:12,860 --> 00:07:13,820 email. 109 00:07:14,610 --> 00:07:19,750 And that I need to put a semicolon at the end of my statement and the word object is going to be Editta 110 00:07:19,750 --> 00:07:20,360 username. 111 00:07:20,360 --> 00:07:28,220 So EDT username assignment operator and and then I need to cast this object to a EDT to edit text. 112 00:07:28,400 --> 00:07:29,520 Ok fine. 113 00:07:29,530 --> 00:07:37,540 View by I-T are thought Id that EDT username and that I need to put a semicolon at the end of my statement 114 00:07:37,990 --> 00:07:40,740 and the fourth object is going to be its password. 115 00:07:40,870 --> 00:07:49,180 So ADT password assignment operator and that I need to access this object where it takes object find 116 00:07:49,180 --> 00:07:56,790 view ID are that Id dot EDT password as you can see here. 117 00:07:56,800 --> 00:08:02,320 So I just need to put a semicolon at the end of my statement and here as you can see inside this activity 118 00:08:02,320 --> 00:08:05,460 underline a second that underlies the candidates email. 119 00:08:05,510 --> 00:08:06,420 We have this Potten. 120 00:08:06,430 --> 00:08:10,610 So inside the second activity that I will find I don't want to create a variable. 121 00:08:10,630 --> 00:08:12,630 And then instantiate that variable. 122 00:08:12,820 --> 00:08:19,230 So here I can just create I just referred to the name of that idea to the idea of the button find view 123 00:08:19,230 --> 00:08:22,720 by ID or that Id dot between. 124 00:08:23,290 --> 00:08:32,530 Ok dad said Uncle listener new view that Uncle listen and as you can see here here I am just creating 125 00:08:32,620 --> 00:08:34,250 an anonymous class. 126 00:08:34,270 --> 00:08:38,890 So now I can actually put my own logic inside this article Meffert. 127 00:08:38,920 --> 00:08:43,510 So when a user clicks and these are PTEN Dunbarton this uncle it is going to be executed. 128 00:08:43,510 --> 00:08:44,090 OK. 129 00:08:44,350 --> 00:08:50,260 So first of all because I want to actually get these data that that were actually entered inside of 130 00:08:50,290 --> 00:08:55,120 these added texts here as you can see we've got some text fields here right. 131 00:08:55,120 --> 00:09:00,090 So the user is going to actually enter some data into these text fields. 132 00:09:00,100 --> 00:09:00,620 OK. 133 00:09:00,820 --> 00:09:07,060 So in order to get those data I need to actually create some cheese inside my second activity class. 134 00:09:07,060 --> 00:09:07,480 OK. 135 00:09:07,540 --> 00:09:13,990 So that the main activity can actually referred to those keys in order to access the values that are 136 00:09:13,990 --> 00:09:15,640 related to those keys. 137 00:09:15,640 --> 00:09:20,900 So in say the second activity class here I'm going try to paste in some lines of code and then I'm going 138 00:09:20,900 --> 00:09:23,710 to explain to you what's going on here. 139 00:09:23,740 --> 00:09:28,270 So as you can see here these are the lines of code that they actually pasted here. 140 00:09:28,420 --> 00:09:32,960 So Line 14 as you can see here I have a variable of type string. 141 00:09:33,100 --> 00:09:36,300 So the access modifier of this variable is public. 142 00:09:36,670 --> 00:09:43,120 This variable is actually static so this we can actually refer to the name of this class and then access 143 00:09:43,210 --> 00:09:44,890 the value of this variable. 144 00:09:45,040 --> 00:09:47,070 Ok this is actually a class variable. 145 00:09:47,230 --> 00:09:51,320 So here as you can see it is rowdier but it's actually final. 146 00:09:51,340 --> 00:09:58,030 So this means that this variable is constant and we cannot change the value that is actually assigned 147 00:09:58,420 --> 00:09:59,740 to this constant. 148 00:09:59,870 --> 00:10:00,680 OK. 149 00:10:00,880 --> 00:10:07,630 And here I the data type of this constant is strange as you can see and the name of this constant is 150 00:10:07,840 --> 00:10:10,620 request text field name. 151 00:10:10,630 --> 00:10:15,840 So this is going to be the name of our key and here I assign this value request name to this key. 152 00:10:15,940 --> 00:10:16,420 OK. 153 00:10:16,460 --> 00:10:20,370 Here in line 15 as you can see of we have another key. 154 00:10:20,380 --> 00:10:23,060 So public static final this is. 155 00:10:23,140 --> 00:10:25,310 This is actually a constant that is actually static. 156 00:10:25,330 --> 00:10:27,660 So this is going to be. 157 00:10:28,000 --> 00:10:30,710 So we can actually refer to the name of this class. 158 00:10:30,940 --> 00:10:33,530 And then I can put the data no not documentation. 159 00:10:33,550 --> 00:10:37,490 And then access this constant request takes real email. 160 00:10:37,750 --> 00:10:43,980 So as you can see the data type of this constant is strange and the name of this constant is request 161 00:10:44,080 --> 00:10:45,290 textfield email. 162 00:10:45,370 --> 00:10:51,430 So you want to actually request that the email textfield adjectivally that is actually entered into 163 00:10:51,430 --> 00:10:54,570 these email textfield. 164 00:10:54,580 --> 00:10:55,210 OK. 165 00:10:55,480 --> 00:11:02,580 And as you can see here I assigned disvalue request e-mail to this constant and in line 16 we have another 166 00:11:02,590 --> 00:11:05,750 key request text field username. 167 00:11:05,770 --> 00:11:09,100 So you want to get the username value so request username. 168 00:11:09,100 --> 00:11:15,290 So I assign this value to this constant And here in line 17 we have another constant. 169 00:11:15,300 --> 00:11:21,110 Another key quest text with password assignment operator request password. 170 00:11:21,160 --> 00:11:21,860 OK. 171 00:11:22,060 --> 00:11:28,720 So now inside these are Uncle Comerford I want to actually paste in some lines of code here and then 172 00:11:28,750 --> 00:11:31,190 I'm going to explain to you what's going on here.