Android (JAVA)

android work

TextView
Button
EditText
Intent
Viewbinding (setting in gradle file)
ListView
Webview
RecycleView
Fragment
Log & comment
Thread & Handler
Get Macaddress and IpAddress phone number

public static String getLocalMacAddress() {
        String result = "";
        InetAddress ip;

        try {
            ip = InetAddress.getLocalHost();

            NetworkInterface network = NetworkInterface.getByInetAddress(ip);
            Log.e("아이피 확인1 : ", String.valueOf(network));

            byte[] mac = network.getHardwareAddress();

            String ipValue = ip.getHostAddress();
//            System.out.println("아이피 확인 : " + ipValue);
            Log.e("아이피 확인2 : ", ipValue);

            String ipValue2 = ip.getHostName();
//            System.out.println("아이피 확인 : " + ipValue2);
            Log.e("아이피 확인3 : ", ipValue2);



            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < mac.length; i++) {
                sb.append(String.format("%02X%s", mac[i], (i < mac.length - 1) ? "-" : ""));
            }
            result = sb.toString();
            Log.e("Mac 주소: ", result);
        } catch (UnknownHostException e) {
            e.printStackTrace();
        } catch (SocketException e){
            e.printStackTrace();
        }

        return result;
    }

adb restart

android sdk>platform-tools>

adb kill-server

press enter

and again

adb start-server

press enter

get sha1 key on android studio

Easiest way for getting SHA1 Key in android studio both (Debug and release Mode)

1.Open Android Studio 2.Open Your Project 3.Click on Gradle (From Right Side Panel, you will see Gradle Bar) 4.Click on Refresh (Click on Refresh from Gradle Bar , you will see List Gradle scripts of your Project) 5.Click on Your Project (Your Project Name form List) 6.Click on Tasks/Android 7.Double Click on signingReport (You will get SHA1 and MD5 in Run Bar)

login with google accout from firebase

https://www.youtube.com/watch?v=gD9uQf5UU-gs

create project in firebase and add api in console.cloud.google.con

AirPlaneMode on/ off

String cmdOn = "su -c settings put global airplane_mode_on 1";
        String cmdOff = "su -c settings put global airplane_mode_on 0";
        String cmdRun = "su -c am broadcast -a android.intent.action.AIRPLANE_MODE";

        shellCmd(cmdOn);
        Thread.sleep(2000);
        shellCmd(cmdRun);
        Thread.sleep(8000);

        shellCmd(cmdOff);
        Thread.sleep(2000);
        shellCmd(cmdRun);
        Thread.sleep(8000);

        callback.invoke(null, "Changed AirPlaneMode");
        ```
# touch with adb

Input draganddrop 500 50 500 800 500 Input tap 990 330


# expand status bar via adb shell

service call statusbar 1

service call statusbar 2