Launcher development - the Home button does not return to initial activity

Question

I have an application that acts like a Launcher. This application has 3 actions:

• SplashActivity: displays the splash screen at boot time, then starts LauncherActivityand ends. This is an activity marked as a manifest in a manifest.

  startActivity(Intent(this, LauncherActivity::class.java))
  finish()
  
  <activity
      android:name=".SplashActivity"
      android:label="@string/app_name"
      android:screenOrientation="landscape"
      android:theme="@style/SplashTheme">
      <intent-filter>
          <action android:name="android.intent.action.MAIN"/>
          <category android:name="android.intent.category.LAUNCHER"/>
          <category android:name="android.intent.category.HOME" />
          <category android:name="android.intent.category.DEFAULT" />
      </intent-filter>
  </activity>
  

• LauncherActivity: The main action for Launcher. Has a menu button that launches DashboardActivity.

   startActivity(Intent(this@LauncherActivity, DashboardActivity::class.java))
  
  <activity
      android:name=".LauncherActivity"
      android:launchMode="singleTask"
      android:screenOrientation="landscape" />
  

• DashboardActivity: Displays a list of applications and launches them through their launch.

  private val DEFAULT_FLAGS_APP_LAUNCH = Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
  startActivity(packageManager.getLaunchIntentForPackage(packageInfo.packageName).apply {
      flags = DEFAULT_FLAGS_APP_LAUNCH
  })
  
  <activity
      android:label="@string/apps"
      android:theme="@style/TNA"
      android:name=".DashboardActivity"
      android:launchMode="singleTask"
      android:screenOrientation="landscape" />
  

All actions are launched through startActivity, including applications.

I want the standard behavior of Android Launcher, that is: when DashboardActivityI enter the application through , if I press the home button, go to the main activity of Launcher ( LauncherActivity), and when you click back, go to the control panel ( DashboardActivity).

, DashboardActivity, LauncherActivity. DashboardActivity, LauncherActivity.

, ?

Answer 1

/ . . .

LauncherActivity DashboardActivity, . LauncherActivity HOME, Activity, LauncherActivity, DashboardActivity.

:

• Activity " ". Fragment, , LauncherActivity, startActivity, .
• DashboardActivity startActivity finish(), .
• singleInstance, Activity . , onNewIntent LauncherActivity.
• , FLAG_ACTIVITY_NO_HISTORY DashboardActivity.