1 00:00:00,210 --> 00:00:06,210 Hi everyone in this theater all we're going to go ahead and create another Android application. 2 00:00:06,210 --> 00:00:09,750 So just click on this start in your Android studio project. 3 00:00:09,900 --> 00:00:18,270 And then here for the application name just type in here app 50 free and then click on next and here 4 00:00:18,300 --> 00:00:24,590 choose AP A16 Android 4.1 jellybean for our minimum STK and then click on next. 5 00:00:24,960 --> 00:00:30,660 And then here choose MT activity next and then click on finish. 6 00:00:30,660 --> 00:00:34,400 So as you can see here now our project is actually created. 7 00:00:34,440 --> 00:00:39,950 So let's actually go inside this folder here and then double click and this layout folder. 8 00:00:40,290 --> 00:00:46,470 And then here double click on this activity underlaid mean that examen here and now it's actually designed 9 00:00:46,470 --> 00:00:48,610 to use an interface of our application. 10 00:00:48,780 --> 00:00:54,070 So just selectees hellova that takes you here and then press on delete key on your keyboard. 11 00:00:54,390 --> 00:01:01,350 So now let's actually drag a linearly out vertical as you can see here inside these layouts folder we 12 00:01:01,350 --> 00:01:07,820 have this linearly alphabetical just selected and put it at the center of this relatively held here. 13 00:01:08,340 --> 00:01:13,250 And then let's actually drag an image view into this linearly or Trypticon. 14 00:01:13,380 --> 00:01:19,530 So just select this image view here inside these widgets folder and then drag it into these linearly 15 00:01:19,530 --> 00:01:24,070 and vertical so just put it at the center of this linearly out vertical. 16 00:01:24,270 --> 00:01:29,450 So as you can see here are the gravity of this image view is actually center horizontally. 17 00:01:29,600 --> 00:01:30,000 OK. 18 00:01:30,090 --> 00:01:37,650 So this lay out gravity attributes is going to determine the position of this image view inside its 19 00:01:37,650 --> 00:01:40,580 parent which is this little linearly I swear to god. 20 00:01:40,590 --> 00:01:44,950 So this is gravity here as you can see is actually center horizontal. 21 00:01:44,970 --> 00:01:51,900 So now let's actually assigned a value 200 for the lay out width of this image view here. 22 00:01:51,930 --> 00:01:58,740 So just like this left here inside this property section just assigned a value 200 for the outfit. 23 00:01:59,070 --> 00:02:04,450 And as under-valued 200 for the layout height as you can see here it is 200 ATP. 24 00:02:04,520 --> 00:02:05,130 OK. 25 00:02:05,370 --> 00:02:07,680 Dependent are dependent pixels. 26 00:02:07,680 --> 00:02:10,450 So now as you can see this is our image view. 27 00:02:10,770 --> 00:02:16,590 And now let's actually track some images into our project so as you can see here on my desktop I have 28 00:02:16,590 --> 00:02:17,440 some images. 29 00:02:17,640 --> 00:02:24,280 So I just need to select him and I just need to right click on them and then click on copy 2 items and 30 00:02:24,380 --> 00:02:30,930 in my android studio inside my project structure here I just need to select this triable folder which 31 00:02:30,930 --> 00:02:33,240 is inside this folder here. 32 00:02:33,240 --> 00:02:39,070 So just select this triable for there and right click on it and then click on paste. 33 00:02:39,600 --> 00:02:41,620 So then click on OK. 34 00:02:41,820 --> 00:02:44,050 So as you can see here I have these images here. 35 00:02:44,100 --> 00:02:50,490 Mobile internet at PNB and Voiceprint Internet that P.A. and then let's actually track our Potten into 36 00:02:50,490 --> 00:02:52,530 this linearly out vertical. 37 00:02:52,560 --> 00:02:56,330 So as you can see here inside these widgets folder I have this button here. 38 00:02:56,340 --> 00:02:56,890 OK. 39 00:02:57,030 --> 00:03:01,380 Just select it and put it below this image view here. 40 00:03:01,860 --> 00:03:07,400 And for the lay out which is kind of value match Pallant and double click on it. 41 00:03:07,710 --> 00:03:11,720 And for the text just typing here. 42 00:03:11,820 --> 00:03:12,450 Network 43 00:03:15,900 --> 00:03:17,400 status. 44 00:03:17,750 --> 00:03:30,190 And for the ID just typing here between gets network status OK and then press enter key on your keyboard. 45 00:03:30,490 --> 00:03:34,210 So now the design of our user interface is actually finished. 46 00:03:34,210 --> 00:03:37,300 So let's go back to our main activity over here. 47 00:03:37,420 --> 00:03:40,690 And then let's actually declare some objects. 48 00:03:40,690 --> 00:03:44,660 So the first object that you want to declare here is actually that image view. 49 00:03:45,040 --> 00:03:48,630 So Image view and the name of my image view is going to be I m g. 50 00:03:48,700 --> 00:03:53,980 So let's actually go back to our activity under minute example and W.W. on this imagery as you can see 51 00:03:54,380 --> 00:03:57,230 let's actually assign an ID to this image. 52 00:03:57,250 --> 00:04:07,120 So for the ID just type in here I M G network network type and then press Enter key on your keyboard. 53 00:04:07,140 --> 00:04:10,370 So let's go back to our main activity that double file here. 54 00:04:10,550 --> 00:04:14,570 And for the name of your image you hear just typing here. 55 00:04:14,640 --> 00:04:22,740 I imagine it's for each type and then put a semicolon here at the end of your statement and then it's 56 00:04:22,740 --> 00:04:24,470 actually declared a button object. 57 00:04:24,510 --> 00:04:27,930 So beat button and the name of my object is going to be between. 58 00:04:27,930 --> 00:04:36,790 Get a network status and then put a semicolon at the end of your statement. 59 00:04:37,030 --> 00:04:42,220 So now let's actually go inside and create Meffert in order to actually initialize these objects. 60 00:04:42,220 --> 00:04:45,670 So the first object that I want to initialize is actually IMJ network type. 61 00:04:45,810 --> 00:04:52,650 Assignment operator and then I need to actually trust this object to a image view object find view by 62 00:04:52,660 --> 00:04:55,290 id r that ID. 63 00:04:55,750 --> 00:05:00,290 I m G network type and include a semicolon at the end of your statement. 64 00:05:00,460 --> 00:05:06,550 And and here I need to initialize this BT and get network status object assignment operator and then 65 00:05:06,550 --> 00:05:15,640 here I need to cast this object to a button object find view by ID or that ID that PTEN network status 66 00:05:15,970 --> 00:05:18,510 and then put a semicolon at the end of your statement. 67 00:05:18,520 --> 00:05:21,960 So now lets actually make the spot and listen to the clicks of the user. 68 00:05:21,970 --> 00:05:28,630 So I just need to type in here PTEN and I get network status that set unclick listener. 69 00:05:29,080 --> 00:05:35,950 And then here I need to actually put the context so the context is going to be main activity that this 70 00:05:36,680 --> 00:05:41,740 and and here at the top I need to actually implement the view that unclick less than an interface. 71 00:05:41,740 --> 00:05:47,650 So here I just type in implements view that on click listener. 72 00:05:47,820 --> 00:05:48,400 OK. 73 00:05:48,610 --> 00:05:54,460 And then here inside our class inside our main activity class I just need to type in and click. 74 00:05:54,610 --> 00:06:00,220 So here I am actually all writing the uncloaked method that is actually inside of this like this in 75 00:06:00,220 --> 00:06:00,820 an interface. 76 00:06:00,820 --> 00:06:01,340 OK. 77 00:06:01,570 --> 00:06:07,600 So here whenever the user clicks on this button BT and get and get BT and get networks that is the Smurfette 78 00:06:07,600 --> 00:06:09,450 here is going to be executed. 79 00:06:09,460 --> 00:06:12,820 So lets actually change the name of this argument to view. 80 00:06:13,270 --> 00:06:19,750 And now lets actually create a Java class in our project in order to actually get the network status 81 00:06:20,060 --> 00:06:21,950 OK of our mobile device. 82 00:06:22,090 --> 00:06:27,780 So lets actually click on this package here that is inside of the Java folder or just click on the packet 83 00:06:27,820 --> 00:06:32,670 and then right click on it and the new and then Java class. 84 00:06:32,680 --> 00:06:36,150 So here I just need to select this Java class and click on it. 85 00:06:36,460 --> 00:06:41,290 So for the name just typing here network network info. 86 00:06:41,440 --> 00:06:43,790 So this is the name of my class and it's working for. 87 00:06:43,990 --> 00:06:45,350 And then click on OK. 88 00:06:45,460 --> 00:06:48,020 So as you can see here my class is actually created. 89 00:06:48,130 --> 00:06:53,560 So now I'm going to paste in some lines of code here and then I'm going to explain to you what's going 90 00:06:53,560 --> 00:06:54,410 on here. 91 00:06:54,760 --> 00:06:59,690 So as you can see here these are the lines of code that I actually pasted here. 92 00:06:59,800 --> 00:07:03,010 So when I try to explain to you what's going on here. 93 00:07:03,190 --> 00:07:09,250 So as you can see here I have a method here and the access modifier of this method is public. 94 00:07:09,280 --> 00:07:15,280 This method is actually static so I can actually fair to dismiss it by using the name of this class 95 00:07:15,530 --> 00:07:17,230 dot the name of this method. 96 00:07:17,230 --> 00:07:17,650 OK. 97 00:07:17,710 --> 00:07:21,850 So that's why I put this key word here this is going to be a class if it. 98 00:07:21,870 --> 00:07:22,380 OK. 99 00:07:22,650 --> 00:07:23,510 So static. 100 00:07:23,770 --> 00:07:25,420 And we have this it here. 101 00:07:25,420 --> 00:07:29,340 So this means that this method it is going to return a value of the integer. 102 00:07:29,350 --> 00:07:31,350 So this is the return type OK. 103 00:07:31,630 --> 00:07:33,460 So the return type is integer. 104 00:07:33,460 --> 00:07:39,610 And this this is the name of my Meffert get network status and this method actually accepts an argument 105 00:07:39,670 --> 00:07:42,030 of type context as you can see here. 106 00:07:42,310 --> 00:07:46,260 So now let's actually go inside this method and see what's going on here. 107 00:07:46,360 --> 00:07:52,560 So first of all as you can see I actually created an object of type connectivity manager. 108 00:07:52,840 --> 00:07:54,570 OK connectivity manager. 109 00:07:54,580 --> 00:07:55,870 So what does this mean. 110 00:07:55,930 --> 00:08:01,840 This connectivity manager is actually the class that is defined in Android and here as you can see I 111 00:08:01,840 --> 00:08:07,120 am actually casting this object to a connectivity manager object. 112 00:08:07,450 --> 00:08:13,030 And here I just referred to the name of this context that I receive as an argument from the Smurfit 113 00:08:13,300 --> 00:08:15,770 so context that sets system service. 114 00:08:15,780 --> 00:08:20,250 So here I actually called the Smurfette get system service. 115 00:08:20,290 --> 00:08:26,630 So here I actually created this kind of connectivity manager object in order to get a network in for. 116 00:08:26,650 --> 00:08:31,070 OK so that I can actually sit see that. 117 00:08:31,390 --> 00:08:36,020 What kind of Internet this device is actually uses. 118 00:08:36,100 --> 00:08:39,640 It is actually a type of Wi-Fi or it is actually type Mobot. 119 00:08:39,640 --> 00:08:43,040 So that's why I created this object connectivity manager. 120 00:08:43,330 --> 00:08:49,570 And then I hear context that gets system service so he had to get the system service of connectivity 121 00:08:49,570 --> 00:08:56,920 service OK so that I can actually identify how my how the device is actually connected to the Internet 122 00:08:57,040 --> 00:08:59,490 for wife or for my wife. 123 00:08:59,500 --> 00:09:05,290 So as you can see here get system service and here I referred to the name of this context class as you 124 00:09:05,290 --> 00:09:11,250 can see here this is capital C and then I called this connectivity service here. 125 00:09:11,290 --> 00:09:13,840 This is actually Salt's actually a hold. 126 00:09:13,870 --> 00:09:14,510 They come and. 127 00:09:14,510 --> 00:09:19,090 Q So if you are using your windows machine hold the control key and then click on the connectivity said 128 00:09:19,210 --> 00:09:24,010 service here and now as you can see here I am inside this context that of a file. 129 00:09:24,160 --> 00:09:27,060 And this is actually I think valuable. 130 00:09:27,190 --> 00:09:27,740 OK. 131 00:09:28,000 --> 00:09:29,950 And this is a constant as you can see here. 132 00:09:29,950 --> 00:09:31,210 This is fine on. 133 00:09:31,210 --> 00:09:34,430 And as you can see it holds this value connectivity. 134 00:09:34,710 --> 00:09:43,000 So by actually referring to this variable to this constant as you can see here I can identify that how 135 00:09:43,270 --> 00:09:50,020 the device is actually connected to the Internet and in line 17 as you can see here you referred to 136 00:09:50,020 --> 00:09:51,200 the name of this package. 137 00:09:51,220 --> 00:09:53,290 Android dot net dot net. 138 00:09:53,280 --> 00:09:54,180 14:4. 139 00:09:54,440 --> 00:09:55,030 OK. 140 00:09:55,330 --> 00:09:59,670 I refer to the name of this package and and I called this class and it's well informed. 141 00:09:59,740 --> 00:10:05,110 And then I actually created an object of type network in for assignment operator. 142 00:10:05,290 --> 00:10:11,300 So here I called this connectivity manager that gets active networked inforced. 143 00:10:11,560 --> 00:10:19,360 So by using the sniffer they can actually identify the type of the Internet connection of the device 144 00:10:19,630 --> 00:10:21,850 get at it get active network info.