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package lavanderia.org.lavanderia |
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import android.content.Context |
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import android.content.Intent |
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import android.os.Bundle |
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import android.support.v4.app.NavUtils |
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import android.support.v4.app.TaskStackBuilder |
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import android.support.v7.app.ActionBarDrawerToggle |
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import android.support.v7.app.AppCompatActivity |
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import android.view.MenuItem |
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import lavanderia.org.lavanderia.UtilityClass.Companion.GO_BACK |
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import lavanderia.org.lavanderia.UtilityClass.Companion.GO_PARENT |
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import lavanderia.org.lavanderia.UtilityClass.Companion.GO_UP |
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class MainActivity : AppCompatActivity() { |
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lateinit var drawerToggle: ActionBarDrawerToggle |
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override fun onCreate(savedInstanceState: Bundle?) { |
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super.onCreate(savedInstanceState) |
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setContentView(R.layout.activity_main) |
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} |
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override fun onOptionsItemSelected(menuItem: MenuItem): Boolean { |
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when (menuItem.itemId) { |
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android.R.id.home -> { |
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UtilityClass.hideKeyboard(MainActivity@ this) |
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if (!drawerToggle.onOptionsItemSelected(menuItem)) { |
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if (supportFragmentManager.backStackEntryCount <= 0) { |
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navigateBack() |
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} else { |
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onBackPressed() |
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} |
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return true |
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} |
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} |
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} |
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return super.onOptionsItemSelected(menuItem) |
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} |
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private fun navigateBack() { |
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val parentIntent = NavUtils.getParentActivityIntent(this) |
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when (determineNavBack(parentIntent)) { |
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GO_PARENT -> { |
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TaskStackBuilder.create(this) |
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.addNextIntentWithParentStack(parentIntent as Intent) |
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.startActivities() |
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overridePendingTransition(0, 0) |
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} |
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GO_UP -> { |
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NavUtils.navigateUpTo(this, parentIntent as Intent) |
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overridePendingTransition(0, 0) |
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} |
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GO_BACK -> { |
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onBackPressed() |
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} |
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} |
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} |
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private fun determineNavBack(parentIntent: Intent?) = |
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if (parentIntent != null && NavUtils.shouldUpRecreateTask(this, parentIntent)) { |
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GO_PARENT |
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} else if (parentIntent != null) { |
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GO_UP |
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} else { |
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GO_BACK |
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} |
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} |
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class UtilityClass { |
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companion object { |
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fun hideKeyboard(context: Context) { |
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TODO("not implemented") |
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} |
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const val GO_PARENT: Int = 0 |
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const val GO_UP: Int = 1 |
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const val GO_BACK: Int = 2 |
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} |
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} |
