Avoid use deprecated class

sample/src/main/java/jp/co/recruit_lifestyle/sample/DeleteActionActivity.java

@@ -1,16 +1,16 @@
 package jp.co.recruit_lifestyle.sample;
 
-import android.app.Activity;
-import android.app.FragmentTransaction;
 import android.os.Bundle;
+import android.support.v4.app.FragmentTransaction;
+import android.support.v7.app.AppCompatActivity;
 
 import jp.co.recruit.floatingview.R;
 import jp.co.recruit_lifestyle.sample.fragment.DeleteActionFragment;
 
 /**
  * 通知から起動後に削除アクションを行う画面です。
  */
-public class DeleteActionActivity extends Activity {
+public class DeleteActionActivity extends AppCompatActivity {
 
  /**
  * 設定フラグメントのタグ
@@ -26,7 +26,7 @@ protected void onCreate(Bundle savedInstanceState) {
  setContentView(R.layout.activity_delete_action);
 
  if (savedInstanceState == null) {
- final FragmentTransaction ft = getFragmentManager().beginTransaction();
+ final FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
  ft.add(R.id.container, DeleteActionFragment.newInstance(), FRAGMENT_TAG_DELETE_ACTION);
  ft.commit();
  }

sample/src/main/java/jp/co/recruit_lifestyle/sample/MainActivity.java

@@ -1,17 +1,17 @@
 package jp.co.recruit_lifestyle.sample;
 
-import android.app.Activity;
-import android.app.FragmentTransaction;
 import android.app.NotificationChannel;
 import android.app.NotificationManager;
 import android.os.Build;
 import android.os.Bundle;
+import android.support.v4.app.FragmentTransaction;
+import android.support.v7.app.AppCompatActivity;
 
 import jp.co.recruit.floatingview.R;
 import jp.co.recruit_lifestyle.sample.fragment.FloatingViewControlFragment;
 
 
-public class MainActivity extends Activity {
+public class MainActivity extends AppCompatActivity {
 
  @Override
  protected void onCreate(Bundle savedInstanceState) {
@@ -30,7 +30,7 @@ protected void onCreate(Bundle savedInstanceState) {
  }
 
  if (savedInstanceState == null) {
- FragmentTransaction ft = getFragmentManager().beginTransaction();
+ final FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
  ft.add(R.id.container, FloatingViewControlFragment.newInstance());
  ft.commit();
  }

sample/src/main/java/jp/co/recruit_lifestyle/sample/fragment/DeleteActionFragment.java

@@ -1,9 +1,9 @@
 package jp.co.recruit_lifestyle.sample.fragment;
 
 import android.app.Activity;
-import android.app.Fragment;
 import android.content.Intent;
 import android.os.Bundle;
+import android.support.v4.app.Fragment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;

sample/src/main/java/jp/co/recruit_lifestyle/sample/fragment/FloatingViewControlFragment.java

@@ -3,8 +3,6 @@
 import android.annotation.SuppressLint;
 import android.annotation.TargetApi;
 import android.app.Activity;
-import android.app.Fragment;
-import android.app.FragmentTransaction;
 import android.content.Context;
 import android.content.Intent;
 import android.content.res.Configuration;
@@ -13,6 +11,8 @@
 import android.os.Build;
 import android.os.Bundle;
 import android.provider.Settings;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentTransaction;
 import android.support.v4.content.ContextCompat;
 import android.view.DisplayCutout;
 import android.view.LayoutInflater;

sample/src/main/java/jp/co/recruit_lifestyle/sample/fragment/FloatingViewSettingsFragment.java

@@ -2,14 +2,14 @@
 
 
 import android.os.Bundle;
-import android.support.v14.preference.PreferenceFragment;
+import android.support.v7.preference.PreferenceFragmentCompat;
 
 import jp.co.recruit.floatingview.R;
 
 /**
  * FloatingViewの設定を行います。
  */
-public class FloatingViewSettingsFragment extends PreferenceFragment {
+public class FloatingViewSettingsFragment extends PreferenceFragmentCompat {
 
  /**
  * FloatingViewSettingsFragmentを生成します。