2017-07-10 6 views
0

プログラムでレイアウトを更新するために、BottomNavigationViewとFragmentを使用してアプリケーションを作成しています。BottomNavigationView setSelectedItemIdクラッシュ

スタックを使用して、ユーザーがクリックして前のフラグメントに戻ることを許可しようとしています。 addToBackStackを新しいフラグメントを展開した後に使用しようとしましたが、レイアウトが正しく変更されているにもかかわらず、バックが押されても、選択されたアイテムメニューは変更されません。

私はフラグメントのカスタムスタックを作成し、選択したアイテムをsetSelectedItemIdで変更することにしましたが、この操作でアプリケーションがクラッシュします。私は通常、多くの時間を使用し、私はこの動作を理解することができません。

ありがとうございました。

public class MainActivity extends FragmentActivity { 

private FragmentManager fm = getSupportFragmentManager(); 
private Logger logger = Logger.getLogger("global"); 
private BottomNavigationView bnv; 
private CustomStack customStack = new CustomStack(); 

private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener 
     = new BottomNavigationView.OnNavigationItemSelectedListener() { 

    @Override 
    public boolean onNavigationItemSelected(@NonNull MenuItem item) { 

     Fragment centerFragment; 
     switch (item.getItemId()) { 

      case R.id.navigation_home: 
       centerFragment = new Fragment1(); 
       replaceCenterLayoutFragment(centerFragment); 
       customStack.push(centerFragment); 

       return true; 
      case R.id.navigation_map: 
       centerFragment = new Fragment2(); 
       bnv.setSelectedItemId(R.id.navigation_interest); 
       return true; 
      case R.id.navigation_interest: 
       centerFragment = new Fragment3(); 
       replaceCenterLayoutFragment(centerFragment); 
       customStack.push(centerFragment); 

       return true; 
      case R.id.navigation_notifications: 
       centerFragment = new Fragment4(); 
       replaceCenterLayoutFragment(centerFragment); 
       customStack.push(centerFragment); 

       return true; 
     } 

     return false; 
    } 

}; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    bnv = (BottomNavigationView) findViewById(R.id.navigation); 
    bnv.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener); 

    FragmentTransaction ft1 = fm.beginTransaction(); 
    Board b = new Board(); 
    ft1.add(R.id.center_layout, new Fragment1()).commit(); 
    customStack.push(b); 
} 

public boolean onKeyDown(int keyCode, KeyEvent event) { 

    if (keyCode == KeyEvent.KEYCODE_BACK) { 
     customStack.pop(); 
     replaceCenterLayoutFragment(customStack.top()); 
    } 
    return false; 
} 

private void replaceCenterLayoutFragment(Fragment f){ 
    FragmentTransaction ft1 = fm.beginTransaction(); 
    ft1.replace(R.id.center_layout, f).commit(); 
    syncMenuItem(f); 
} 

private void syncMenuItem(Fragment f){ 
    if(f instanceof Fragment1) 
     bnv.setSelectedItemId(R.id.p1); 
    if(f instanceof Fragment2) 
     bnv.setSelectedItemId(R.id.p2); 
    if(f instanceof Fragment3) 
     bnv.setSelectedItemId(R.id.p3); 
    if(f instanceof Fragment4) 
     bnv.setSelectedItemId(R.id.p4); 
} 
} 

これはあなたがLogCatで出力を提供することができ、私のカスタムスタック

public class CustomStack { 

private ArrayList<Fragment> menu ; 
private Logger logger = Logger.getLogger("global"); 

public CustomStack(){ 
    menu = new ArrayList<>(); 
} 

public void push(Fragment i){ 
    menu.add(i); 
} 

public Fragment pop(){ 
    if(menu.size() > 0) { 
     int s = menu.size() -1; 
     Fragment app = menu.get(s); 
     menu.remove(s); 
     return app; 
    } 
    else{ 
     return null; 
    } 
} 

public Fragment top(){ 
    if(menu.size() > 0) 
     return menu.get(menu.size() -1); 
    else 
     return null; 
} 

public boolean isEmpty(){ 
    return menu.size() > 0; 
} 

} 

とLogCatPage

07-10 20:31:07.879 28384-28384/? I/art: Late-enabling -Xcheck:jni 
07-10 20:31:07.970 28384-28384/com.example.longsky.peoople W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg --instruction-set=arm64 --instruction-set-features=smp,a53 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=generic --instruction-set-features=default --dex-file=/data/app/com.example.longsky.peoople-2/split_lib_dependencies_apk.apk --oat-file=/data/dalvik-cache/arm64/[email protected]@[email protected][email protected]) because non-0 exit status 
07-10 20:31:08.145 28384-28384/com.example.longsky.peoople W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg --instruction-set=arm64 --instruction-set-features=smp,a53 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=generic --instruction-set-features=default --dex-file=/data/app/com.example.longsky.peoople-2/split_lib_slice_0_apk.apk --oat-file=/data/dalvik-cache/arm64/[email protected]@[email protected][email protected]) because non-0 exit status 
07-10 20:31:08.187 28384-28384/com.example.longsky.peoople W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg --instruction-set=arm64 --instruction-set-features=smp,a53 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=generic --instruction-set-features=default --dex-file=/data/app/com.example.longsky.peoople-2/split_lib_slice_1_apk.apk --oat-file=/data/dalvik-cache/arm64/[email protected]@[email protected][email protected]) because non-0 exit status 
07-10 20:31:08.224 28384-28384/com.example.longsky.peoople W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg --instruction-set=arm64 --instruction-set-features=smp,a53 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=generic --instruction-set-features=default --dex-file=/data/app/com.example.longsky.peoople-2/split_lib_slice_2_apk.apk --oat-file=/data/dalvik-cache/arm64/[email protected]@[email protected][email protected]) because non-0 exit status 
07-10 20:31:08.264 28384-28384/com.example.longsky.peoople W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg --instruction-set=arm64 --instruction-set-features=smp,a53 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=generic --instruction-set-features=default --dex-file=/data/app/com.example.longsky.peoople-2/split_lib_slice_3_apk.apk --oat-file=/data/dalvik-cache/arm64/[email protected]@[email protected][email protected]) because non-0 exit status 
07-10 20:31:08.311 28384-28384/com.example.longsky.peoople W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg --instruction-set=arm64 --instruction-set-features=smp,a53 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=generic --instruction-set-features=default --dex-file=/data/app/com.example.longsky.peoople-2/split_lib_slice_4_apk.apk --oat-file=/data/dalvik-cache/arm64/[email protected]@[email protected][email protected]) because non-0 exit status 
07-10 20:31:08.347 28384-28384/com.example.longsky.peoople W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg --instruction-set=arm64 --instruction-set-features=smp,a53 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=generic --instruction-set-features=default --dex-file=/data/app/com.example.longsky.peoople-2/split_lib_slice_5_apk.apk --oat-file=/data/dalvik-cache/arm64/[email protected]@[email protected][email protected]) because non-0 exit status 
07-10 20:31:08.387 28384-28384/com.example.longsky.peoople W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg --instruction-set=arm64 --instruction-set-features=smp,a53 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=generic --instruction-set-features=default --dex-file=/data/app/com.example.longsky.peoople-2/split_lib_slice_6_apk.apk --oat-file=/data/dalvik-cache/arm64/[email protected]@[email protected][email protected]) because non-0 exit status 
07-10 20:31:08.427 28384-28384/com.example.longsky.peoople W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg --instruction-set=arm64 --instruction-set-features=smp,a53 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=generic --instruction-set-features=default --dex-file=/data/app/com.example.longsky.peoople-2/split_lib_slice_7_apk.apk --oat-file=/data/dalvik-cache/arm64/[email protected]@[email protected][email protected]) because non-0 exit status 
07-10 20:31:08.463 28384-28384/com.example.longsky.peoople W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg --instruction-set=arm64 --instruction-set-features=smp,a53 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=generic --instruction-set-features=default --dex-file=/data/app/com.example.longsky.peoople-2/split_lib_slice_8_apk.apk --oat-file=/data/dalvik-cache/arm64/[email protected]@[email protected][email protected]) because non-0 exit status 
07-10 20:31:08.508 28384-28384/com.example.longsky.peoople W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg --instruction-set=arm64 --instruction-set-features=smp,a53 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=generic --instruction-set-features=default --dex-file=/data/app/com.example.longsky.peoople-2/split_lib_slice_9_apk.apk --oat-file=/data/dalvik-cache/arm64/[email protected]@[email protected][email protected]) because non-0 exit status 
07-10 20:31:08.509 28384-28384/com.example.longsky.peoople W/System: ClassLoader referenced unknown path: /data/app/com.example.longsky.peoople-2/lib/arm64 
07-10 20:31:08.512 28384-28384/com.example.longsky.peoople I/InstantRun: starting instant run server: is main process 
07-10 20:31:08.600 28384-28384/com.example.longsky.peoople W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable 
07-10 20:31:08.655 28384-28499/com.example.longsky.peoople E/AbstractTracker: Can't create handler inside thread that has not called Looper.prepare() 
07-10 20:31:08.655 28384-28499/com.example.longsky.peoople D/AppTracker: App Event: start 
07-10 20:31:08.661 28384-28501/com.example.longsky.peoople D/OpenGLRenderer: Use EGL_SWAP_BEHAVIOR_PRESERVED: true 
07-10 20:31:08.679 28384-28501/com.example.longsky.peoople I/Adreno: QUALCOMM build     : 183c040, Iff84fb1103 
                    Build Date      : 03/18/16 
                    OpenGL ES Shader Compiler Version: XE031.06.00.02 
                    Local Branch      : 
                    Remote Branch     : refs/tags/AU_LINUX_ANDROID_LA.BF64.1.2.2_RB4.06.00.01.180.031 
                    Remote Branch     : NONE 
                    Reconstruct Branch    : NOTHING 
07-10 20:31:08.686 28384-28501/com.example.longsky.peoople I/OpenGLRenderer: Initialized EGL, version 1.4 
07-10 20:31:10.516 28384-28384/com.example.longsky.peoople D/AndroidRuntime: Shutting down VM 
07-10 20:31:10.592 28384-28384/com.example.longsky.peoople E/AndroidRuntime: FATAL EXCEPTION: main 
                      Process: com.example.longsky.peoople, PID: 28384 
                      java.lang.StackOverflowError: stack size 8MB 
                       at com.example.longsky.peoople.MainActivity.replaceCenterLayoutFragment(MainActivity.java:96) 
                       at com.example.longsky.peoople.MainActivity.access$000(MainActivity.java:15) 
                       at com.example.longsky.peoople.MainActivity$1.onNavigationItemSelected(MainActivity.java:39) 
                       at android.support.design.widget.BottomNavigationView$1.onMenuItemSelected(BottomNavigationView.java:184) 
                       at android.support.v7.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:822) 
                       at android.support.v7.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:156) 
                       at android.support.v7.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:969) 
                       at android.support.design.widget.BottomNavigationView.setSelectedItemId(BottomNavigationView.java:341) 
                       at com.example.longsky.peoople.MainActivity.replaceCenterLayoutFragment(MainActivity.java:96) 
                       at com.example.longsky.peoople.MainActivity.access$000(MainActivity.java:15) 
                       at com.example.longsky.peoople.MainActivity$1.onNavigationItemSelected(MainActivity.java:39) 
                       at android.support.design.widget.BottomNavigationView$1.onMenuItemSelected(BottomNavigationView.java:184) 
                       at android.support.v7.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:822) 
                       at android.support.v7.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:156) 
                       at android.support.v7.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:969) 
                       at android.support.design.widget.BottomNavigationView.setSelectedItemId(BottomNavigationView.java:341) 
                       at com.example.longsky.peoople.MainActivity.replaceCenterLayoutFragment(MainActivity.java:96) 
                       at com.example.longsky.peoople.MainActivity.access$000(MainActivity.java:15) 
                       at com.example.longsky.peoople.MainActivity$1.onNavigationItemSelected(MainActivity.java:39) 
                       at android.support.design.widget.BottomNavigationView$1.onMenuItemSelected(BottomNavigationView.java:184) 
                       at android.support.v7.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:822) 
                       at android.support.v7.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:156) 
                       at android.support.v7.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:969) 
                       at android.support.design.widget.BottomNavigationView.setSelectedItemId(BottomNavigationView.java:341) 
                       at com.example.longsky.peoople.MainActivity.replaceCenterLayoutFragment(MainActivity.java:96) 
                       at com.example.longsky.peoople.MainActivity.access$000(MainActivity.java:15) 
                       at com.example.longsky.peoople.MainActivity$1.onNavigationItemSelected(MainActivity.java:39) 
                       at android.support.design.widget.BottomNavigationView$1.onMenuItemSelected(BottomNavigationView.java:184) 
                       at android.support.v7.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:822) 
                       at android.support.v7.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:156) 
                       at android.support.v7.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:969) 
                       at android.support.design.widget.BottomNavigationView.setSelectedItemId(BottomNavigationView.java:341) 
                       at com.example.longsky.peoople.MainActivity.replaceCenterLayoutFragment(MainActivity.java:96) 
                       at com.example.longsky.peoople.MainActivity.access$000(MainActivity.java:15) 
                       at com.example.longsky.peoople.MainActivity$1.onNavigationItemSelected(MainActivity.java:39) 
                       at android.support.design.widget.BottomNavigationView$1.onMenuItemSelected(BottomNavigationView.java:184) 
                       at android.support.v7.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:822) 
                       at android.support.v7.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:156) 
                       at android.support.v7.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:969) 
                       at android.support.design.widget.BottomNavigationView.setSelectedItemId(BottomNavigationView.java:341) 
                       at com.example.longsky.peoople.MainActivity.replaceCenterLayoutFragment(MainActivity.java:96) 
                       at com.example.longsky.peoople.MainActivity.access$000(MainActivity.java:15) 
                       at com.example.longsky.peoople.MainActivity$1.onNavigationItemSelected(MainActivity.java:39) 
                       at android.support.d 
07-10 20:31:10.594 28384-28384/com.example.longsky.peoople D/AppTracker: App Event: crash 
07-10 20:31:10.638 28384-28384/com.example.longsky.peoople D/Error: ERR: exClass=java.lang.StackOverflowError 
07-10 20:31:10.638 28384-28384/com.example.longsky.peoople D/Error: ERR: exMsg=stack size 8MB 
07-10 20:31:10.638 28384-28384/com.example.longsky.peoople D/Error: ERR: file=MainActivity.java 
07-10 20:31:10.638 28384-28384/com.example.longsky.peoople D/Error: ERR: class=com.example.longsky.peoople.MainActivity 
07-10 20:31:10.638 28384-28384/com.example.longsky.peoople D/Error: ERR: method=replaceCenterLayoutFragment line=96 
07-10 20:31:10.647 28384-28384/com.example.longsky.peoople D/Error: ERR: stack=java.lang.StackOverflowError: stack size 8MB 
                     at com.example.longsky.peoople.MainActivity.replaceCenterLayoutFragment(MainActivity.java:96) 
                     at com.example.longsky.peoople.MainActivity.access$000(MainActivity.java:15) 
                     at com.example.longsky.peoople.MainActivity$1.onNavigationItemSelected(MainActivity.java:39) 
                     at android.support.design.widget.BottomNavigationView$1.onMenuItemSelected(BottomNavigationView.java:184) 
                     at android.support.v7.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:822) 
                     at android.support.v7.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:156) 
                     at android.support.v7.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:969) 
                     at android.support.design.widget.BottomNavigationView.setSelectedItemId(BottomNavigationView.java:341) 
                     at com.example.longsky.peoople.MainActivity.replaceCenterLayoutFragment(MainActivity.java:96) 
                     at com.example.longsky.peoople.MainActivity.access$000(MainActivity.java:15) 
                     at com.example.longsky.peoople.MainActivity$1.onNavigationItemSelected(MainActivity.java:39) 
                     at android.support.design.widget.BottomNavigationView$1.onMenuItemSelected(BottomNavigationView.java:184) 
                     at android.support.v7.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:822) 
                     at android.support.v7.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:156) 
                     at android.support.v7.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:969) 
                     at android.support.design.widget.BottomNavigationView.setSelectedItemId(BottomNavigationView.java:341) 
                     at com.example.longsky.peoople.MainActivity.replaceCenterLayoutFragment(MainActivity.java:96) 
                     at com.example.longsky.peoople.MainActivity.access$000(MainActivity.java:15) 
                     at com.example.longsky.peoople.MainActivity$1.onNavigationItemSelected(MainActivity.java:39) 
                     at android.support.design.widget.BottomNavigationView$1.onMenuItemSelected(BottomNavigationView.java:184) 
                     at android.support.v7.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:822) 
                     at android.support.v7.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:156) 
                     at android.support.v7.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:969) 
                     at android.support.design.widget.BottomNavigationView.setSelectedItemId(BottomNavigationView.java:341) 
                     at com.example.longsky.peoople.MainActivity.replaceCenterLayoutFragment(MainActivity.java:96) 
                     at com.example.longsky.peoople.MainActivity.access$000(MainActivity.java:15) 
                     at com.example.longsky.peoople.MainActivity$1.onNavigationItemSelected(MainActivity.java:39) 
                     at android.support.design.widget.BottomNavigationView$1.onMenuItemSelected(BottomNavigationView.java:184) 
                     at android.support.v7.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:822) 
                     at android.support.v7.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:156) 
                     at android.support.v7.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:969) 
                     at android.support.design.widget.BottomNavigationView.setSelectedItemId(BottomNavigationView.java:341) 
                     at com.example.longsky.peoople.MainActivity.replaceCenterLayoutFragment(MainActivity.java:96) 
                     at com.example.longsky.peoople.MainActivity.access$000(MainActivity.java:15) 
                     at com.example.longsky.peoople.MainActivity$1.onNavigationItemSelected(MainActivity.java:39) 
                     at android.support.design.widget.BottomNavigationView$1.onMenuItemSelected(BottomNavigationView.java:184) 
                     at android.support.v7.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:822) 
                     at android.support.v7.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:156) 
                     at android.support.v7.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:969) 
                     at android.support.design.widget.BottomNavigationView.setSelectedItemId(BottomNavigationView.java:341) 
                     at com.example.longsky.peoople.MainActivity.replaceCenterLayoutFragment(MainActivity.java:96) 
                     at com.example.longsky.peoople.MainActivity.access$000(MainActivity.java:15) 
                     at com.example.longsky.peoople.MainActivity$1.onNavigationItemSelected(MainActivity.java:39) 
                     at android.support.design.widget.BottomNavigationView$1.onMenuItemSelected(BottomNavigati 
07-10 20:31:10.647 28384-28384/com.example.longsky.peoople D/Error: ERR: TOTAL BYTES WRITTEN: 862560 
07-10 20:31:10.695 28384-28384/com.example.longsky.peoople I/Process: Sending signal. PID: 28384 SIG: 9 

答えて

1

問題はsetSelectedItemIdがそうでsetSelectedItemIdを呼び出しますreplaceCenterLayoutFragmentを呼び出すリスナーを、呼び出し、ということです。

ハック修正が、私はLogCatを追加し、次の

private void replaceCenterLayoutFragment(Fragment f){ 
    FragmentTransaction ft1 = fm.beginTransaction(); 
    ft1.replace(R.id.center_layout, f).commit(); 

    bnv.setOnNavigationItemSelectedListener(null); 
    syncMenuItem(f); 
    bnv.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener); 
} 
+0

時間。問題は、私の問題はスタックではなく、下部ナビゲーションビューの選択項目の更新であり、あなたのソリューションはこれについて私を助けないということです。とにかくあなたのスタックを使用してそれを修正すると思いますか? –

+0

ええ、そうだと思いますが、私は下部ナビゲーションビューのタブ用のスタックを作成したいとは考えていませんでした。私のスタックは、あなたのアプリが将来あなたのために(あなたのアプリをバックグラウンドで入れて、終了をクリックして再起動してみて)あなたのためにたくさんの問題を解決すると主張していますが、私は問題に実際の解決策を加えました。 – EpicPandaForce

+0

ありがとうございました。私はちょうどあなたのハッキーな修正の前に、そしてフラグメントを置き換えてから使用します。本当にありがとう –

0

のですか?私はピンポイントをできるように、エラーの原因

+0

だろう。 –

+0

CenterFragment変数を各 'case'節内でローカルにしてみてください。フラグメントをスタックにプッシュしないでください。代わりに、フラグメントのようなint型の文字列を一意に指定してください。 –

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