7 | Application developed with Kotlin.
8 | The application has been built to demonstrate implementation of MVVM architecture with web services using Retrofit.
9 | It has been designed using Android Architecture components.
10 | The application is built in such a way that whenever there is a remote service call, the result will be observed.
11 |
12 |
13 |
Architecture
14 |
The whole application is built based on the MVVM architectural pattern.
15 | The main advantage of using MVVM, there is no two way dependency between ViewModel and Model unlike MVP. Here the view can observe the data changes in the viewmodel as we are using LiveData which is lifecycle aware. The viewmodel to view communication is achieved through Observer Pattern (basically observing the state changes of the data in the viewmodel).
16 |
17 |
18 |
19 |
App Review
20 |
21 |
user can login in into his account
22 |
User will stay login until user logout from account himself
23 |
Application will keep checking for internet connection to avoid any crash during operations
24 |
user can view all the contacts
25 |
User can create new contact
26 |
User can delete existing account
27 |
User can perform these operations by swapping item to the left side
28 |
User can edit contact information
29 |
30 |
31 |
32 |
Images
33 |
34 |
35 |
36 |
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/app/src/main/res/drawable-v24/ic_launcher_foreground.xml:
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1 |
7 |
12 |
13 |
19 |
22 |
25 |
26 |
27 |
28 |
34 |
35 |
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/app/src/main/java/app/cansol/phonebook/Controllers/SignInActivity.kt:
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1 | package app.cansol.phonebook.Controllers
2 |
3 | import android.content.Intent
4 | import androidx.appcompat.app.AppCompatActivity
5 | import android.os.Bundle
6 | import android.view.View
7 | import android.widget.EditText
8 | import android.widget.Toast
9 | import app.cansol.phonebook.AppData.UserData
10 | import app.cansol.phonebook.Interface.ResultListener
11 | import app.cansol.phonebook.Network.Network
12 | import app.cansol.phonebook.R
13 |
14 | class SignInActivity : AppCompatActivity(), ResultListener {
15 |
16 | /**
17 | initialize hardcoded users in oncreate method**/
18 | override fun onCreate(savedInstanceState: Bundle?) {
19 | super.onCreate(savedInstanceState)
20 | setContentView(R.layout.activity_sign_in)
21 |
22 | UserData.initUsers()
23 | }
24 |
25 | /**
26 | it simply call the method from for searching user against provided credentials
27 | **/
28 | fun signIn(view: View) {
29 | val number = findViewById(R.id.edTxtSignInPhoneNumber).text
30 | val password = findViewById(R.id.edTxtSignInPassword).text
31 |
32 | if (number.trim().isNotEmpty() && password.isNotEmpty()) {
33 | if (Network.checkNetwork(this)) {
34 | UserData.findUser(number.toString(), password.toString(), this)
35 | } else Toast.makeText(this, "Check network connection", Toast.LENGTH_SHORT).show()
36 | } else Toast.makeText(this, "Field(s) is empty!", Toast.LENGTH_SHORT).show()
37 |
38 | }
39 |
40 | /**
41 | following both are Interface method implementation
42 | **/
43 | override fun onSuccess(message: String) {
44 | app.cansol.phonebook.AppData.AppData(this).userId = UserData.currentUser!!.id
45 | val intent = Intent(this, MainActivity::class.java)
46 | intent.flags = Intent.FLAG_ACTIVITY_CLEAR_TASK or Intent.FLAG_ACTIVITY_NEW_TASK
47 | startActivity(intent)
48 | finish()
49 | }
50 |
51 | override fun onFailure(message: String) {
52 | Toast.makeText(this, message, Toast.LENGTH_SHORT).show()
53 | }
54 | }
55 |
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/app/src/main/res/layout/contact_menu.xml:
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1 |
2 |
7 |
8 |
23 |
24 |
38 |
39 |
52 |
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/gradlew.bat:
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1 | @if "%DEBUG%" == "" @echo off
2 | @rem ##########################################################################
3 | @rem
4 | @rem Gradle startup script for Windows
5 | @rem
6 | @rem ##########################################################################
7 |
8 | @rem Set local scope for the variables with windows NT shell
9 | if "%OS%"=="Windows_NT" setlocal
10 |
11 | set DIRNAME=%~dp0
12 | if "%DIRNAME%" == "" set DIRNAME=.
13 | set APP_BASE_NAME=%~n0
14 | set APP_HOME=%DIRNAME%
15 |
16 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
17 | set DEFAULT_JVM_OPTS=
18 |
19 | @rem Find java.exe
20 | if defined JAVA_HOME goto findJavaFromJavaHome
21 |
22 | set JAVA_EXE=java.exe
23 | %JAVA_EXE% -version >NUL 2>&1
24 | if "%ERRORLEVEL%" == "0" goto init
25 |
26 | echo.
27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
28 | echo.
29 | echo Please set the JAVA_HOME variable in your environment to match the
30 | echo location of your Java installation.
31 |
32 | goto fail
33 |
34 | :findJavaFromJavaHome
35 | set JAVA_HOME=%JAVA_HOME:"=%
36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe
37 |
38 | if exist "%JAVA_EXE%" goto init
39 |
40 | echo.
41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
42 | echo.
43 | echo Please set the JAVA_HOME variable in your environment to match the
44 | echo location of your Java installation.
45 |
46 | goto fail
47 |
48 | :init
49 | @rem Get command-line arguments, handling Windows variants
50 |
51 | if not "%OS%" == "Windows_NT" goto win9xME_args
52 |
53 | :win9xME_args
54 | @rem Slurp the command line arguments.
55 | set CMD_LINE_ARGS=
56 | set _SKIP=2
57 |
58 | :win9xME_args_slurp
59 | if "x%~1" == "x" goto execute
60 |
61 | set CMD_LINE_ARGS=%*
62 |
63 | :execute
64 | @rem Setup the command line
65 |
66 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
67 |
68 | @rem Execute Gradle
69 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
70 |
71 | :end
72 | @rem End local scope for the variables with windows NT shell
73 | if "%ERRORLEVEL%"=="0" goto mainEnd
74 |
75 | :fail
76 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
77 | rem the _cmd.exe /c_ return code!
78 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
79 | exit /b 1
80 |
81 | :mainEnd
82 | if "%OS%"=="Windows_NT" endlocal
83 |
84 | :omega
85 |
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/app/src/main/java/app/cansol/phonebook/Controllers/CreateContactActivity.kt:
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1 | package app.cansol.phonebook.Controllers
2 |
3 | import android.app.Activity
4 | import android.content.Intent
5 | import androidx.appcompat.app.AppCompatActivity
6 | import android.os.Bundle
7 | import android.view.Menu
8 | import android.view.MenuItem
9 | import android.widget.EditText
10 | import android.widget.Toast
11 | import app.cansol.phonebook.Network.Network
12 | import app.cansol.phonebook.R
13 |
14 | class CreateContactActivity : AppCompatActivity() {
15 |
16 | /**
17 | two fields for contact creation
18 | **/
19 | lateinit var name:EditText
20 | lateinit var number:EditText
21 |
22 | override fun onCreate(savedInstanceState: Bundle?) {
23 | super.onCreate(savedInstanceState)
24 | setContentView(R.layout.activity_create_contact)
25 |
26 |
27 | supportActionBar!!.setHomeAsUpIndicator(R.drawable.ic_close)
28 | setTitle("Create Contact")
29 |
30 | name = findViewById(R.id.edittextName)
31 | number = findViewById(R.id.edittxtPhoneNum)
32 |
33 | }
34 |
35 | override fun onCreateOptionsMenu(menu: Menu?): Boolean {
36 | val menuInflater = getMenuInflater()
37 | menuInflater.inflate(R.menu.create_contact_menu, menu)
38 | return super.onCreateOptionsMenu(menu)
39 |
40 | }
41 |
42 | override fun onOptionsItemSelected(item: MenuItem): Boolean {
43 |
44 | when (item.itemId) {
45 | R.id.save_contact -> {
46 |
47 | if (Network.checkNetwork(this)) {
48 | saveContact()
49 | return true
50 | }
51 | else{
52 | Toast.makeText(this, "Check network connection", Toast.LENGTH_SHORT).show()
53 | return false
54 | }
55 |
56 | }
57 | else -> {
58 | if (name.text.isNotEmpty() && number.text.trim().isNotEmpty()) {
59 | Toast.makeText(this,"Contact didn't save",Toast.LENGTH_SHORT).show()
60 | }
61 | return super.onOptionsItemSelected(item)
62 | }
63 | }
64 | }
65 |
66 | /**
67 | takes data from edittext fields and send them through intent using putExtra function**/
68 | private fun saveContact() {
69 | if (name.text.isNotEmpty() && number.text.trim().isNotEmpty()) {
70 | val data = Intent()
71 | data.putExtra("EXTRA_NAME", "${name.text}")
72 | data.putExtra("EXTRA_NUMBER", "${number.text}")
73 | setResult(Activity.RESULT_OK, data)
74 | finish()
75 | } else {
76 | Toast.makeText(this, "Provide Complete Data", Toast.LENGTH_SHORT).show()
77 | }
78 |
79 | }
80 | }
81 |
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/app/src/main/res/layout/activity_create_contact.xml:
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/app/src/main/res/layout/contact_layout.xml:
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/app/src/main/res/layout/edit_contact_form.xml:
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/app/src/main/java/app/cansol/phonebook/Repository/ContactRepository.kt:
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1 | package app.cansol.phonebook.Repository
2 |
3 | import androidx.appcompat.app.AppCompatActivity
4 | import androidx.core.content.ContextCompat
5 | import androidx.lifecycle.LiveData
6 | import androidx.lifecycle.MutableLiveData
7 | import app.cansol.phonebook.Model.Contact
8 | import app.cansol.phonebook.RetrofitAPI.PhoneBookApi
9 | import retrofit2.Call
10 | import retrofit2.Callback
11 | import retrofit2.Response
12 |
13 |
14 | /**
15 | * Repository class one of the component of MVVM
16 | * it will communicate with web services for crud operations
17 | * **/
18 | class ContactRepository {
19 |
20 | private val responseContact = MutableLiveData>()
21 | private val contactList = ArrayList()
22 |
23 | fun getAllContacts(id:String):LiveData>{
24 | PhoneBookApi().getContacts(id).enqueue(object:Callback>{
25 | override fun onFailure(call: Call>, t: Throwable) {}
26 |
27 | override fun onResponse(call: Call>, response: Response>) {
28 | if(!response.isSuccessful) return
29 | contactList.removeAll(contactList)
30 | contactList.addAll(response.body()!!)
31 | responseContact.value = contactList.sortedWith(compareBy({it.contact_name}))
32 |
33 | }
34 | })
35 | return responseContact
36 | }
37 |
38 | fun createContact(contact:Contact,userId:String):LiveData>{
39 | PhoneBookApi()
40 | .createContact(contact,userId).enqueue(object : Callback{
41 | override fun onFailure(call: Call, t: Throwable) {}
42 |
43 | override fun onResponse(call: Call, response: Response) {
44 | if(!response.isSuccessful) {
45 | println("didnt done...")
46 | return
47 | }
48 | contactList.add(response.body()!!)
49 | responseContact.value = contactList.sortedWith(compareBy({it.contact_name}))
50 | println("done....")
51 | }
52 |
53 | })
54 | return responseContact
55 | }
56 |
57 | fun updateContact(contact:Contact,userId:String):LiveData>{
58 | PhoneBookApi()
59 | .updateContact(contact,userId,contact.id!!).enqueue(object: Callback{
60 | override fun onFailure(call: Call, t: Throwable) {}
61 |
62 | override fun onResponse(call: Call, response: Response) {
63 | if(!response.isSuccessful) return
64 | contactList.removeIf{
65 | it.id == contact.id
66 | }
67 | contactList.add(response.body()!!)
68 | responseContact.value = contactList.sortedWith(compareBy({it.contact_name}))
69 | }
70 | })
71 | return responseContact
72 | }
73 |
74 | fun deleteCont(userId:String,contact:Contact):LiveData>{
75 | PhoneBookApi()
76 | .deleteContact(userId,contact.id!!).enqueue(object: Callback{
77 | override fun onFailure(call: Call, t: Throwable) {}
78 |
79 | override fun onResponse(call: Call, response: Response) {
80 | if(!response.isSuccessful) return
81 | contactList.removeIf {
82 | it.id == contact.id
83 | }
84 | responseContact.value = contactList.sortedWith(compareBy({it.contact_name}))
85 |
86 | }
87 | })
88 | return responseContact
89 | }
90 |
91 |
92 | }
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/.idea/codeStyles/Project.xml:
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 | xmlns:android
17 |
18 | ^$
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 | xmlns:.*
28 |
29 | ^$
30 |
31 |
32 | BY_NAME
33 |
34 |
35 |
36 |
37 |
38 |
39 | .*:id
40 |
41 | http://schemas.android.com/apk/res/android
42 |
43 |
44 |
45 |
46 |
47 |
48 |
49 |
50 | .*:name
51 |
52 | http://schemas.android.com/apk/res/android
53 |
54 |
55 |
56 |
57 |
58 |
59 |
60 |
61 | name
62 |
63 | ^$
64 |
65 |
66 |
67 |
68 |
69 |
70 |
71 |
72 | style
73 |
74 | ^$
75 |
76 |
77 |
78 |
79 |
80 |
81 |
82 |
83 | .*
84 |
85 | ^$
86 |
87 |
88 | BY_NAME
89 |
90 |
91 |
92 |
93 |
94 |
95 | .*
96 |
97 | http://schemas.android.com/apk/res/android
98 |
99 |
100 | ANDROID_ATTRIBUTE_ORDER
101 |
102 |
103 |
104 |
105 |
106 |
107 | .*
108 |
109 | .*
110 |
111 |
112 | BY_NAME
113 |
114 |
115 |
116 |
117 |
118 |
119 |
120 |
121 |
122 |
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/app/src/main/res/layout/activity_sign_in.xml:
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1 |
2 |
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22 |
40 |
41 |
57 |
58 |
69 |
70 |
81 |
82 |
93 |
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/gradlew:
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1 | #!/usr/bin/env sh
2 |
3 | ##############################################################################
4 | ##
5 | ## Gradle start up script for UN*X
6 | ##
7 | ##############################################################################
8 |
9 | # Attempt to set APP_HOME
10 | # Resolve links: $0 may be a link
11 | PRG="$0"
12 | # Need this for relative symlinks.
13 | while [ -h "$PRG" ] ; do
14 | ls=`ls -ld "$PRG"`
15 | link=`expr "$ls" : '.*-> \(.*\)$'`
16 | if expr "$link" : '/.*' > /dev/null; then
17 | PRG="$link"
18 | else
19 | PRG=`dirname "$PRG"`"/$link"
20 | fi
21 | done
22 | SAVED="`pwd`"
23 | cd "`dirname \"$PRG\"`/" >/dev/null
24 | APP_HOME="`pwd -P`"
25 | cd "$SAVED" >/dev/null
26 |
27 | APP_NAME="Gradle"
28 | APP_BASE_NAME=`basename "$0"`
29 |
30 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
31 | DEFAULT_JVM_OPTS=""
32 |
33 | # Use the maximum available, or set MAX_FD != -1 to use that value.
34 | MAX_FD="maximum"
35 |
36 | warn () {
37 | echo "$*"
38 | }
39 |
40 | die () {
41 | echo
42 | echo "$*"
43 | echo
44 | exit 1
45 | }
46 |
47 | # OS specific support (must be 'true' or 'false').
48 | cygwin=false
49 | msys=false
50 | darwin=false
51 | nonstop=false
52 | case "`uname`" in
53 | CYGWIN* )
54 | cygwin=true
55 | ;;
56 | Darwin* )
57 | darwin=true
58 | ;;
59 | MINGW* )
60 | msys=true
61 | ;;
62 | NONSTOP* )
63 | nonstop=true
64 | ;;
65 | esac
66 |
67 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
68 |
69 | # Determine the Java command to use to start the JVM.
70 | if [ -n "$JAVA_HOME" ] ; then
71 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
72 | # IBM's JDK on AIX uses strange locations for the executables
73 | JAVACMD="$JAVA_HOME/jre/sh/java"
74 | else
75 | JAVACMD="$JAVA_HOME/bin/java"
76 | fi
77 | if [ ! -x "$JAVACMD" ] ; then
78 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
79 |
80 | Please set the JAVA_HOME variable in your environment to match the
81 | location of your Java installation."
82 | fi
83 | else
84 | JAVACMD="java"
85 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
86 |
87 | Please set the JAVA_HOME variable in your environment to match the
88 | location of your Java installation."
89 | fi
90 |
91 | # Increase the maximum file descriptors if we can.
92 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
93 | MAX_FD_LIMIT=`ulimit -H -n`
94 | if [ $? -eq 0 ] ; then
95 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
96 | MAX_FD="$MAX_FD_LIMIT"
97 | fi
98 | ulimit -n $MAX_FD
99 | if [ $? -ne 0 ] ; then
100 | warn "Could not set maximum file descriptor limit: $MAX_FD"
101 | fi
102 | else
103 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
104 | fi
105 | fi
106 |
107 | # For Darwin, add options to specify how the application appears in the dock
108 | if $darwin; then
109 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
110 | fi
111 |
112 | # For Cygwin, switch paths to Windows format before running java
113 | if $cygwin ; then
114 | APP_HOME=`cygpath --path --mixed "$APP_HOME"`
115 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
116 | JAVACMD=`cygpath --unix "$JAVACMD"`
117 |
118 | # We build the pattern for arguments to be converted via cygpath
119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
120 | SEP=""
121 | for dir in $ROOTDIRSRAW ; do
122 | ROOTDIRS="$ROOTDIRS$SEP$dir"
123 | SEP="|"
124 | done
125 | OURCYGPATTERN="(^($ROOTDIRS))"
126 | # Add a user-defined pattern to the cygpath arguments
127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then
128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
129 | fi
130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh
131 | i=0
132 | for arg in "$@" ; do
133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
135 |
136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
138 | else
139 | eval `echo args$i`="\"$arg\""
140 | fi
141 | i=$((i+1))
142 | done
143 | case $i in
144 | (0) set -- ;;
145 | (1) set -- "$args0" ;;
146 | (2) set -- "$args0" "$args1" ;;
147 | (3) set -- "$args0" "$args1" "$args2" ;;
148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
154 | esac
155 | fi
156 |
157 | # Escape application args
158 | save () {
159 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
160 | echo " "
161 | }
162 | APP_ARGS=$(save "$@")
163 |
164 | # Collect all arguments for the java command, following the shell quoting and substitution rules
165 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
166 |
167 | # by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
168 | if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
169 | cd "$(dirname "$0")"
170 | fi
171 |
172 | exec "$JAVACMD" "$@"
173 |
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/app/src/main/res/drawable/ic_launcher_background.xml:
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171 |
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/app/src/main/java/app/cansol/phonebook/Controllers/MainActivity.kt:
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1 | package app.cansol.phonebook.Controllers
2 |
3 | import android.content.Intent
4 | import androidx.appcompat.app.AppCompatActivity
5 | import android.os.Bundle
6 | import android.view.LayoutInflater
7 | import android.view.Menu
8 | import android.view.MenuItem
9 | import android.view.View
10 | import android.widget.EditText
11 | import android.widget.TextView
12 | import android.widget.Toast
13 | import androidx.appcompat.app.AlertDialog
14 | import androidx.lifecycle.Observer
15 | import androidx.lifecycle.ViewModel
16 | import androidx.lifecycle.ViewModelProvider
17 | import androidx.lifecycle.ViewModelProviders
18 | import androidx.recyclerview.widget.ItemTouchHelper
19 | import androidx.recyclerview.widget.LinearLayoutManager
20 | import androidx.recyclerview.widget.RecyclerView
21 | import app.cansol.phonebook.Adapter.ContactListAdapter
22 | import app.cansol.phonebook.AppData.AppData
23 | import app.cansol.phonebook.ViewModel.ContactViewModel
24 | import app.cansol.phonebook.Model.Contact
25 | import app.cansol.phonebook.Network.Network
26 | import app.cansol.phonebook.R
27 |
28 | class MainActivity : AppCompatActivity() {
29 |
30 | /**
31 | Following variables will initialize in onCreate()
32 | **/
33 | lateinit var contactViewModel: ContactViewModel
34 | lateinit var contactAdapter: ContactListAdapter
35 | lateinit var appData: AppData
36 |
37 | override fun onCreate(savedInstanceState: Bundle?) {
38 | super.onCreate(savedInstanceState)
39 | setContentView(R.layout.activity_main)
40 |
41 | val context = this
42 |
43 | /**
44 | initializations of sharedPreference class
45 | **/
46 | appData = AppData(this)
47 |
48 | //checking if user is already logged in or not
49 | if (appData.userId == "") {
50 | val intent = Intent(this, SignInActivity::class.java)
51 | intent.flags = Intent.FLAG_ACTIVITY_CLEAR_TASK or Intent.FLAG_ACTIVITY_NEW_TASK
52 | startActivity(intent)
53 | finish()
54 | }
55 |
56 |
57 | // recyclerView from layout and assigning layoutManager
58 | val recView = findViewById(R.id.contactRecyclerView)
59 | recView.layoutManager = LinearLayoutManager(this)
60 |
61 | // getting view model class from ViewModelProviders
62 |
63 | if (Network.checkNetwork(this)) {
64 | contactViewModel = ViewModelProviders.of(this,object: ViewModelProvider.Factory{
65 | override fun create(modelClass: Class): T {
66 | return ContactViewModel(appData.userId.toString()) as T
67 | }
68 | }).get(ContactViewModel::class.java)
69 | val observer = Observer> {
70 | contactAdapter = ContactListAdapter(context, it!!)
71 | recView.adapter = contactAdapter
72 | contactAdapter.notifyDataSetChanged()
73 | }
74 | contactViewModel.list().observe(this, observer)
75 | } else Toast.makeText(this, "Check network connection", Toast.LENGTH_SHORT).show()
76 |
77 |
78 | // Touch Listener for recyclerview item swapping
79 | ItemTouchHelper(object : ItemTouchHelper.SimpleCallback(0, ItemTouchHelper.LEFT) {
80 | override fun onMove(
81 | recyclerView: RecyclerView,
82 | viewHolder: RecyclerView.ViewHolder,
83 | target: RecyclerView.ViewHolder
84 | ): Boolean {
85 | return false
86 | }
87 |
88 | override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
89 | // Inflating layout for alert dialog
90 | val builder = AlertDialog.Builder(context).create()
91 | val dialogView = LayoutInflater.from(context).inflate(R.layout.contact_menu, null)
92 | val editView =
93 | LayoutInflater.from(context).inflate(R.layout.edit_contact_form, null)
94 | builder.setView(dialogView)
95 | builder.show()
96 | dialogView.findViewById(R.id.txteditCancel).setOnClickListener {
97 | contactAdapter.notifyDataSetChanged()
98 | builder.dismiss()
99 | }
100 |
101 | dialogView.findViewById(R.id.txtDelete).setOnClickListener {
102 | contactViewModel.deleteContact(
103 | contactAdapter.getContactAt(viewHolder.adapterPosition),
104 | appData.userId.toString()
105 | )
106 |
107 | Toast.makeText(context, "Contact Deleted!", Toast.LENGTH_SHORT).show()
108 | builder.dismiss()
109 | }
110 | // When edit option is chosen from Alert dialog menu
111 | dialogView.findViewById(R.id.txtEdit).setOnClickListener {
112 | builder.dismiss()
113 |
114 | val builder = AlertDialog.Builder(context).create()
115 | builder.setView(editView)
116 | builder.show()
117 |
118 | var contact = contactAdapter.getContactAt(viewHolder.adapterPosition)
119 | val name = editView.findViewById(R.id.txtEditName)
120 | val number = editView.findViewById(R.id.txtEditNumber)
121 | name.setText(contact.contact_name)
122 | number.setText(contact.contact_number)
123 |
124 | editView.findViewById(R.id.txtEditDone).setOnClickListener {
125 |
126 |
127 | if (name.text.isNotEmpty() && number.text.isNotEmpty()) {
128 | Toast.makeText(context, "Save", Toast.LENGTH_SHORT)
129 | .show()
130 | val n = name.text.toString().substring(0,1).toUpperCase()+ name.text.toString().substring(1)
131 | val cont = Contact(
132 | contact.id,
133 | contact.user_id,
134 | n,
135 | number.text.toString()
136 | )
137 | contactViewModel.updateContact(
138 | cont,
139 | appData.userId.toString()
140 | )
141 | builder.dismiss()
142 | } else {
143 | contactAdapter.notifyDataSetChanged()
144 | Toast.makeText(
145 | context,
146 | "Field should not be empty!",
147 | Toast.LENGTH_SHORT
148 | ).show()
149 | }
150 | }
151 |
152 | editView.findViewById(R.id.txtEditCancel).setOnClickListener {
153 | contactAdapter.notifyDataSetChanged()
154 | Toast.makeText(context, "nothing happened!", Toast.LENGTH_SHORT).show()
155 | builder.dismiss()
156 | }
157 |
158 | }
159 | contactAdapter.notifyDataSetChanged()
160 | }
161 | }).attachToRecyclerView(recView)
162 |
163 |
164 | }
165 |
166 | /**
167 | starting activity to create new contact
168 | **/
169 | fun createContact(view: View) {
170 | if (Network.checkNetwork(this)) {
171 | val intent = Intent(this, CreateContactActivity::class.java)
172 | startActivityForResult(intent, 1)
173 | } else Toast.makeText(this, "Check network connection", Toast.LENGTH_SHORT).show()
174 | }
175 |
176 | /**
177 | the following function get the results and evaluating them and then calling ViewModel to create contact and perform related operations
178 | **/
179 | override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
180 | super.onActivityResult(requestCode, resultCode, data)
181 |
182 | if (resultCode == RESULT_OK && data != null) {
183 | var name = data.getStringExtra("EXTRA_NAME")
184 | val number = data.getStringExtra("EXTRA_NUMBER")
185 | name = name.substring(0, 1).toUpperCase() + name.substring(1)
186 | val contact = Contact("", "1", name, number)
187 | if (Network.checkNetwork(this)) {
188 | contactViewModel.createContact(contact, appData.userId.toString())
189 | Toast.makeText(this, "Contact Saved!", Toast.LENGTH_SHORT).show()
190 | } else Toast.makeText(this, "Check network connection", Toast.LENGTH_SHORT).show()
191 | }
192 |
193 | }
194 |
195 | /**
196 | the menu from resource file inflating into action bar
197 | **/
198 | override fun onCreateOptionsMenu(menu: Menu?): Boolean {
199 | val menuInflater = getMenuInflater()
200 | menuInflater.inflate(R.menu.main_activity_menu, menu)
201 | return super.onCreateOptionsMenu(menu)
202 | }
203 |
204 | /**
205 | perform action on choosing option from menu inflated into actionbar
206 | **/
207 | override fun onOptionsItemSelected(item: MenuItem): Boolean {
208 |
209 | when (item.itemId) {
210 | R.id.logout -> {
211 | AppData(this).userId = ""
212 | val intent = Intent(this, SignInActivity::class.java)
213 | intent.flags = Intent.FLAG_ACTIVITY_CLEAR_TASK or Intent.FLAG_ACTIVITY_NEW_TASK
214 | startActivity(intent)
215 | finish()
216 | return true
217 | }
218 | else -> {
219 | return super.onOptionsItemSelected(item)
220 | }
221 | }
222 | }
223 |
224 | }
225 |
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18 |
19 | 
34 | 
35 | 
36 |
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/app/src/main/res/drawable-v24/ic_launcher_foreground.xml:
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1 |