質問編集履歴
2
コード追加
test
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File without changes
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test
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@@ -23,3 +23,273 @@
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2回目に同じアイテムをタップした場合、新たに生成しようとonCreateが走ったあとすぐに最初に動いていたものを終了しようとonDestroyが走ってしまっています。
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これは単純に上記の方法で解決できるのだろうか・・・
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１．案で解決できそうですが、表示しているフラグメントと同じアイテム選択時は何も処理しないとかできますか？
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静的なfragmentなのでもしかして大幅につくりかえないと駄目でしょうか？
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MainActivity.java
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```java
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import android.Manifest;
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import android.content.Intent;
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import android.content.pm.PackageManager;
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import android.os.Bundle;
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import com.google.android.material.floatingactionbutton.FloatingActionButton;
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import com.google.android.material.snackbar.Snackbar;
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import android.view.MenuItem;
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import android.view.View;
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import androidx.annotation.NonNull;
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import androidx.core.app.ActivityCompat;
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import androidx.core.content.ContextCompat;
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import androidx.navigation.NavController;
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import androidx.navigation.Navigation;
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import androidx.navigation.ui.AppBarConfiguration;
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import androidx.navigation.ui.NavigationUI;
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import com.google.android.material.navigation.NavigationView;
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import androidx.drawerlayout.widget.DrawerLayout;
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import androidx.appcompat.app.AppCompatActivity;
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import androidx.appcompat.widget.Toolbar;
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import android.view.Menu;
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public class MainActivity extends AppCompatActivity {
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private AppBarConfiguration mAppBarConfiguration;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_main);
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Toolbar toolbar = findViewById(R.id.toolbar);
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setSupportActionBar(toolbar);
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FloatingActionButton fab = findViewById(R.id.fab);
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fab.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View view) {
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Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
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.setAction("Action", null).show();
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}
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});
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DrawerLayout drawer = findViewById(R.id.drawer_layout);
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NavigationView navigationView = findViewById(R.id.nav_view);
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// Passing each menu ID as a set of Ids because each
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// menu should be considered as top level destinations.
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mAppBarConfiguration = new AppBarConfiguration.Builder(
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R.id.nav_home, R.id.nav_graph, R.id.nav_slideshow,
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R.id.nav_tools, R.id.nav_share, R.id.nav_send)
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.setDrawerLayout(drawer)
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.build();
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NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
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NavigationUI.setupActionBarWithNavController(this, navController, mAppBarConfiguration);
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NavigationUI.setupWithNavController(navigationView, navController);
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}
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@Override
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public boolean onCreateOptionsMenu(Menu menu) {
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// Inflate the menu; this adds items to the action bar if it is present.
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getMenuInflater().inflate(R.menu.main, menu);
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return true;
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}
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@Override
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public boolean onSupportNavigateUp() {
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NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
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return NavigationUI.navigateUp(navController, mAppBarConfiguration)
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|| super.onSupportNavigateUp();
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}
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@Override
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protected void onDestroy()
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{
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super.onDestroy();
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}
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}
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```
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mobile_navigation.xml
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```XML
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<?xml version="1.0" encoding="utf-8"?>
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<navigation xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:app="http://schemas.android.com/apk/res-auto"
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xmlns:tools="http://schemas.android.com/tools"
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android:id="@+id/mobile_navigation"
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app:startDestination="@+id/nav_home">
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<fragment
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android:id="@+id/nav_home"
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android:name="XXX.ui.home.HomeFragment"
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android:label="@string/menu_home"
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tools:layout="@layout/fragment_home" />
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<fragment
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android:id="@+id/nav_graph"
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android:name="XXX.ui.graph.GraphFragment"
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android:label="@string/menu_graph"
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tools:layout="@layout/fragment_graph" />
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<fragment
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android:id="@+id/nav_slideshow"
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android:name="xxx.ui.slideshow.SlideshowFragment"
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android:label="@string/menu_slideshow"
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tools:layout="@layout/fragment_slideshow" />
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<fragment
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android:id="@+id/nav_tools"
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android:name="xxx.ui.tools.ToolsFragment"
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android:label="@string/menu_tools"
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tools:layout="@layout/fragment_tools" />
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<fragment
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android:id="@+id/nav_share"
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android:name="xxx.ui.share.ShareFragment"
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android:label="@string/menu_share"
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tools:layout="@layout/fragment_share" />
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<fragment
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android:id="@+id/nav_send"
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android:name="xxx.ui.send.SendFragment"
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android:label="@string/menu_send"
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tools:layout="@layout/fragment_send" />
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</navigation>
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```
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1
補足追加
test
CHANGED
|
File without changes
|
test
CHANGED
|
@@ -13,3 +13,13 @@
|
|
|
13
13
|
そして実装上どのようにすれば実現できるか知りたいです。
|
|
14
14
|
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|
15
15
|
１．の解決方法はデフォルトのテンプレートで各アイテムがfragmentタグでxmlに埋め込まれいるので難しいような気がしています。
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16
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補足
|
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20
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+
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21
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動きを見てみましたが
|
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22
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|
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23
|
+
2回目に同じアイテムをタップした場合、新たに生成しようとonCreateが走ったあとすぐに最初に動いていたものを終了しようとonDestroyが走ってしまっています。
|
|
24
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+
|
|
25
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+
これは単純に上記の方法で解決できるのだろうか・・・
|