Customized Settings as per MC with test cases.

app/src/androidTest/java/com/nmc/android/ui/SettingsPreferenceIT.kt

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+package com.nmc.android.ui
+
+import android.preference.ListPreference
+import android.preference.Preference
+import androidx.test.espresso.Espresso.onData
+import androidx.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.matcher.PreferenceMatchers
+import androidx.test.espresso.matcher.PreferenceMatchers.withKey
+import androidx.test.espresso.matcher.ViewMatchers.isCompletelyDisplayed
+import androidx.test.ext.junit.rules.ActivityScenarioRule
+import com.owncloud.android.AbstractIT
+import com.owncloud.android.R
+import com.owncloud.android.ui.AppVersionPreference
+import com.owncloud.android.ui.PreferenceCustomCategory
+import com.owncloud.android.ui.ThemeableSwitchPreference
+import com.owncloud.android.ui.activity.SettingsActivity
+import org.hamcrest.Matchers.allOf
+import org.hamcrest.Matchers.instanceOf
+import org.hamcrest.Matchers.`is`
+import org.junit.Assert.assertEquals
+import org.junit.Rule
+import org.junit.Test
+
+class SettingsPreferenceIT : AbstractIT() {
+
+    @get:Rule
+    val activityRule = ActivityScenarioRule(SettingsActivity::class.java)
+
+    @Test
+    fun verifyPreferenceSectionCustomClass() {
+        activityRule.scenario.onActivity {
+            val preferenceAccountInfo = it.findPreference("account_info")
+            val preferenceGeneral = it.findPreference("general")
+            val preferenceDetails = it.findPreference("details")
+            val preferenceMore = it.findPreference("more")
+            val preferenceDataProtection = it.findPreference("data_protection")
+            val preferenceInfo = it.findPreference("info")
+
+            val preferenceCategoryList = listOf(
+                preferenceAccountInfo,
+                preferenceGeneral,
+                preferenceDetails,
+                preferenceMore,
+                preferenceDataProtection,
+                preferenceInfo
+            )
+
+            for (preference in preferenceCategoryList) {
+                assertEquals(PreferenceCustomCategory::class.java, preference.javaClass)
+            }
+        }
+    }
+
+    @Test
+    fun verifySwitchPreferenceCustomClass() {
+        activityRule.scenario.onActivity {
+            val preferenceShowHiddenFiles = it.findPreference("show_hidden_files")
+            assertEquals(ThemeableSwitchPreference::class.java, preferenceShowHiddenFiles.javaClass)
+        }
+    }
+
+    @Test
+    fun verifyAppVersionPreferenceCustomClass() {
+        activityRule.scenario.onActivity {
+            val preferenceAboutApp = it.findPreference("about_app")
+            assertEquals(AppVersionPreference::class.java, preferenceAboutApp.javaClass)
+        }
+    }
+
+    @Test
+    fun verifyPreferenceChildCustomLayout() {
+        activityRule.scenario.onActivity {
+            val userName = it.findPreference("user_name")
+            val storagePath = it.findPreference("storage_path")
+            val lock = it.findPreference("lock")
+            val showHiddenFiles = it.findPreference("show_hidden_files")
+            val syncedFolders = it.findPreference("syncedFolders")
+            val backup = it.findPreference("backup")
+            val mnemonic = it.findPreference("mnemonic")
+            val privacySettings = it.findPreference("privacy_settings")
+            val privacyPolicy = it.findPreference("privacy_policy")
+            val sourceCode = it.findPreference("sourcecode")
+            val help = it.findPreference("help")
+            val imprint = it.findPreference("imprint")
+
+            val preferenceList = listOf(
+                userName,
+                storagePath,
+                lock,
+                showHiddenFiles,
+                syncedFolders,
+                backup,
+                mnemonic,
+                privacySettings,
+                privacyPolicy,
+                sourceCode,
+                help,
+                imprint
+            )
+
+            for (preference in preferenceList) {
+                assertEquals(R.layout.custom_preference_layout, preference.layoutResource)
+            }
+
+            val aboutApp = it.findPreference("about_app")
+            assertEquals(R.layout.custom_app_preference_layout, aboutApp.layoutResource)
+
+        }
+    }
+
+    @Test
+    fun verifyPreferencesTitleText() {
+        onData(allOf(`is`(instanceOf(PreferenceCustomCategory::class.java)), withKey("account_info"),
+                PreferenceMatchers.withTitleText("Account Information")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(Preference::class.java)), withKey("user_name"),
+            PreferenceMatchers.withTitleText("test")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(PreferenceCustomCategory::class.java)), withKey("general"),
+            PreferenceMatchers.withTitleText("General")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(ListPreference::class.java)), withKey("storage_path"),
+            PreferenceMatchers.withTitleText("Data storage folder")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(PreferenceCustomCategory::class.java)), withKey("details"),
+            PreferenceMatchers.withTitleText("Details")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(ListPreference::class.java)), withKey("lock"),
+            PreferenceMatchers.withTitleText("App passcode")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(ThemeableSwitchPreference::class.java)), withKey("show_hidden_files"),
+            PreferenceMatchers.withTitleText("Show hidden files")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(PreferenceCustomCategory::class.java)), withKey("more"),
+            PreferenceMatchers.withTitleText("More")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(Preference::class.java)), withKey("syncedFolders"),
+            PreferenceMatchers.withTitleText("Auto upload")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(Preference::class.java)), withKey("backup"),
+            PreferenceMatchers.withTitleText("Back up contacts")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(Preference::class.java)), withKey("mnemonic"),
+            PreferenceMatchers.withTitleText("E2E mnemonic")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(Preference::class.java)), withKey("logger"),
+            PreferenceMatchers.withTitleText("Logs")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(PreferenceCustomCategory::class.java)), withKey("data_protection"),
+            PreferenceMatchers.withTitleText("Data Privacy")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(Preference::class.java)), withKey("privacy_settings"),
+            PreferenceMatchers.withTitleText("Privacy Settings")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(Preference::class.java)), withKey("privacy_policy"),
+            PreferenceMatchers.withTitleText("Privacy Policy")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(Preference::class.java)), withKey("sourcecode"),
+            PreferenceMatchers.withTitleText("Used OpenSource Software")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(PreferenceCustomCategory::class.java)), withKey("service"),
+            PreferenceMatchers.withTitleText("Service")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(Preference::class.java)), withKey("help"),
+            PreferenceMatchers.withTitleText("Help")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(Preference::class.java)), withKey("imprint"),
+            PreferenceMatchers.withTitleText("Imprint")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(PreferenceCustomCategory::class.java)), withKey("info"),
+            PreferenceMatchers.withTitleText("Info")))
+            .check(matches(isCompletelyDisplayed()))
+    }
+
+    @Test
+    fun verifyPreferencesSummaryText() {
+        onData(allOf(`is`(instanceOf(Preference::class.java)), withKey("lock"),
+            PreferenceMatchers.withSummaryText("None")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(Preference::class.java)), withKey("syncedFolders"),
+            PreferenceMatchers.withSummaryText("Manage folders for auto upload")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(Preference::class.java)), withKey("backup"),
+            PreferenceMatchers.withSummaryText("Daily backup of your calendar & contacts")))
+            .check(matches(isCompletelyDisplayed()))
+
+        onData(allOf(`is`(instanceOf(Preference::class.java)), withKey("mnemonic"),
+            PreferenceMatchers.withSummaryText("To show mnemonic please enable device credentials.")))
+            .check(matches(isCompletelyDisplayed()))
+    }
+}

app/src/main/java/com/nmc/android/ui/PrivacySettingsInterface.kt

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+package com.nmc.android.ui
+
+import android.content.Context
+
+/**
+ * interface to open privacy settings activity from nmc/1921-settings branch
+ * for implementation look nmc/1878-privacy branch
+ * this class will have the declaration for it since it has the PrivacySettingsActivity.java in place
+ * since we don't have privacy settings functionality in this branch so to handle the redirection we have used interface
+ */
+interface PrivacySettingsInterface {
+    fun openPrivacySettingsActivity(context: Context)
+}

app/src/main/java/com/owncloud/android/ui/AppVersionPreference.kt

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+package com.owncloud.android.ui
+
+import android.content.Context
+import android.content.pm.PackageManager
+import android.preference.Preference
+import android.util.AttributeSet
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import com.owncloud.android.R
+import com.owncloud.android.lib.common.utils.Log_OC
+import com.owncloud.android.utils.StringUtils
+
+class AppVersionPreference : Preference {
+    constructor(context: Context?) : super(context)
+    constructor(context: Context?, attrs: AttributeSet?) : super(context, attrs)
+    constructor(context: Context?, attrs: AttributeSet?, defStyle: Int) : super(context, attrs, defStyle)
+
+    override fun getView(convertView: View?, parent: ViewGroup?): View {
+        val v = super.getView(convertView, parent)
+        updatePreferenceView(v.findViewById(R.id.title), v.findViewById(R.id.summary))
+        return v
+    }
+
+    private fun updatePreferenceView(title: TextView, summary: TextView) {
+        val appVersion = appVersion
+        val titleColor: Int = context.resources.getColor(R.color.fontAppbar, null)
+        title.text = StringUtils.getColorSpan(
+            context.getString(R.string.app_name),
+            titleColor
+        )
+        summary.text = String.format(context.getString(R.string.about_version), appVersion)
+    }
+
+    private val appVersion: String
+        get() {
+            var temp: String
+            try {
+                val pkg = context.packageManager.getPackageInfo(context.packageName, 0)
+                temp = pkg.versionName
+            } catch (e: PackageManager.NameNotFoundException) {
+                temp = ""
+                Log_OC.e(TAG, "Error while showing about dialog", e)
+            }
+            return temp
+        }
+
+    companion object {
+        private val TAG = AppVersionPreference::class.java.simpleName
+    }
+}

app/src/main/java/com/owncloud/android/ui/PreferenceCustomCategory.kt

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+package com.owncloud.android.ui
+
+import android.content.Context
+import android.graphics.Typeface
+import android.preference.PreferenceCategory
+import android.util.AttributeSet
+import android.util.TypedValue
+import android.view.View
+import android.widget.TextView
+import com.owncloud.android.R
+
+class PreferenceCustomCategory : PreferenceCategory {
+    constructor(context: Context?) : super(context)
+    constructor(context: Context?, attrs: AttributeSet?) : super(context, attrs)
+    constructor(
+        context: Context?, attrs: AttributeSet?,
+        defStyle: Int
+    ) : super(context, attrs, defStyle)
+
+    override fun onBindView(view: View) {
+        super.onBindView(view)
+        val titleView = view.findViewById<TextView>(android.R.id.title)
+        titleView.setTextColor(context.resources.getColor(R.color.text_color))
+        titleView.setTextSize(
+            TypedValue.COMPLEX_UNIT_PX,
+            context.resources.getDimensionPixelSize(R.dimen.txt_size_16sp).toFloat()
+        )
+        titleView.setTypeface(null, Typeface.BOLD)
+    }
+}