FragmentManager crashes when using Replace
I have an activity and several fragments. I have to replace fragment in FrameLayout. But when I use this feature, my app crashes. Here is the function code
Android.Support.V4.App.Fragment fragment = null;
switch (position) {
case 0:
fragment = new ScheduleFragment();
break;
case 1:
fragment = new MainFragment();
break;
}
if (fragment != null) {
Android.Support.V4.App.FragmentManager fragmentManager = SupportFragmentManager;
var transaction = fragmentManager.BeginTransaction();
transaction.Replace(Resource.Id.content_frame, fragment);
transaction.Commit();
mDrawerList.SetItemChecked (position, true);
SetTitle (mScreenTitles [position]);
mDrawerLayout.CloseDrawer (mDrawerList);
} else {
Log.Error (this.Class.Name, "Error, fragment not created");
}
And here's the error:
Java.Lang.RuntimeException: java.lang.reflect.InvocationTargetException at --- End of managed exception stack trace --- at java.lang.RuntimeException: java.lang.reflect.InvocationTargetException at com.android.internal.os.ZygoteInit .main (ZygoteInit.java:694) when Caused by: java.lang.reflect.InvocationTargetException at at java.lang.reflect.Method.invoke (native method) when java.lang.reflect.Method.invoke (Method.java: 372) at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run (ZygoteInit.java:899) for ... 1 for more reasons: md52ce486a14f4bcd95899665e9d932190b.JavaProxyThrowable: type "System.TypeOSLoad. BaseBundle "from assembly 'Mono.Android, Version = 0.0.0.0, Culture = neutral, PublicKeyToken = 84e04ff9cfb79065. in Android.Views.View.n_OnSaveInstanceState (intptr,intptr) [0x00009] in / Users / builder / data / lanes / monodroid -mavericks-monodroid-5.1-series / d23da369 / source / monodroid / src / Mono.Android / platforms / android-19 / src / generated / Android.Views .View.cs: 14822 at at (dynamic method envelope) object.e0a03ea8-44fe-4482-bf92-bc99edac0352 (intptr, intptr) at at md5d7f0962782a324dbc9992a12c8322ca0.PagerSlidingTabStrip.n_onSaveInstanceState (Native method) at md5d7f0962782a324dbc9992a12c8322ca0.PagerSlidingTabStrip.onSaveInstanceState (PagerSlidingTabStrip.java : 86) at android.view.View.dispatchSaveInstanceState (View.java:13550) at android.view.ViewGroup.dispatchSaveInstanceState (ViewGroup.java:2859) at android.view.ViewGroup.dispatchSaveInstanceState (ViewGroup.java:2865) at atroid.view.View.saveHierarchyState (View.java:13533) at at android.support.v4.app.FragmentManagerImpl.saveFragmentViewState (FragmentManager.java:1639) when android.support.v4.app.FragmentManagerImpl.moveToState (FragmentManager.java:1023) when android.support.v4.app.FragmentManagerImpl.removeFragment (FragmentManagerImpl.removeFragment (FragmentManager33support) .v4.app.BackStackRecord.run (BackStackRecord.java:696) at android.support.v4.app.FragmentManagerImpl.execPendingActions (FragmentManager.java:1499) at android.support.v4.app.FragmentManagerImpl $ 1.Manager (FragmentManagerImpl $ 1.Mrunager (. java: 456) at at android.os.Handler.handleCallback (Handler.java:739) at at android.os.Handler.dispatchMessage (Handler.java:95) at at android.os.Looper.loop (Looper.java: 135) at at android.app.ActivityThread.main (ActivityThread.java:5221) at ... 4 moreFragmentManagerImpl.removeFragment (FragmentManager.java:1233) at android.support.v4.app.BackStackRecord.run (BackStackRecord.java:696) at android.support.v4.app.FragmentManagerImpl.execPendingActions.java:1499 .support.v4.app.FragmentManagerImpl $ 1.run (FragmentManager.java:456) at at android.os.Handler.handleCallback (Handler.java:739) at at android.os.Handler.dispatchMessage (Handler.java:95) at at android.os.Looper.loop (Looper.java:135) at at android.app.ActivityThread.main (ActivityThread.java:5221) at ... 4 moreFragmentManagerImpl.removeFragment (FragmentManager.java:1233) at android.support.v4.app.BackStackRecord.run (BackStackRecord.java:696) at android.support.v4.app.FragmentManagerImpl.execPendingActions.java:1499 .support.v4.app.FragmentManagerImpl $ 1.run (FragmentManager.java:456) at at android.os.Handler.handleCallback (Handler.java:739) at at android.os.Handler.dispatchMessage (Handler.java:95) at at android.os.Looper.loop (Looper.java:135) at at android.app.ActivityThread.main (ActivityThread.java:5221) at ... 4 moreHandler.handleCallback (Handler.java:739) at at android.os.Handler.dispatchMessage (Handler.java:95) at at android.os.Looper.loop (Looper.java:135) at at android.app.ActivityThread. main (ActivityThread.java:5221) at ... 4 moreHandler.handleCallback (Handler.java:739) at at android.os.Handler.dispatchMessage (Handler.java:95) at at android.os.Looper.loop (Looper.java:135) at at android.app.ActivityThread. main (ActivityThread.java:5221) at ... 4 more
Layout.
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/gradientshape">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:text="-, 1 , 11 - "
android:textAppearance="?android:attr/textAppearanceSmall"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/info"
android:textColor="#ffffffff"
android:gravity="center_horizontal" />
<TextView
android:text=", 11 "
android:textAppearance="?android:attr/textAppearanceSmall"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/dayOfMonth"
android:textColor="#ffffffff"
android:gravity="center" />
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#00000000"
android:fadingEdge="vertical" />
</LinearLayout>
<ListView
android:id="@+id/left_drawer"
android:divider="@android:color/transparent"
android:dividerHeight="0dp"
android:choiceMode="singleChoice"
android:layout_width="220dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#111" />
</android.support.v4.widget.DrawerLayout>
Also I am loading the fragment layout for fragments in the viewPager. Here he is:
<ListView
android:minWidth="25px"
android:minHeight="25px"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/LessonsView"
android:layout_marginLeft="5dp"
android:padding="15dp"
android:divider="@null"
android:dividerHeight="0dp"
android:layout_marginTop="5dp"
android:layout_marginRight="5dp"
android:layout_marginBottom="5dp" />
And the layout of the ListView items in the ViewPager.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="1dp"
android:layout_marginTop="5dp">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minWidth="25px"
android:minHeight="25px"
android:layout_marginTop="5dp"
android:layout_marginBottom="0.0dp"
android:background="@drawable/border">
<TextView
android:text=" 1"
android:id="@+id/PairNumber"
android:layout_width="35.5dp"
android:layout_height="wrap_content"
android:gravity="top"
android:background="@drawable/triangle"
android:alpha="0.8"
android:layout_gravity="left"
android:textColor="#ff000000"
android:textAlignment="center" />
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:text=" "
android:textAppearance="?android:attr/textAppearanceSmall"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/pairTitle"
android:layout_marginTop="7dp"
android:textColor="#ff000000" />
<TextView
android:text=""
android:textAppearance="?android:attr/textAppearanceSmall"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/pairType"
android:layout_marginTop="2dp"
android:textColor="#ff949494" />
</LinearLayout>
</LinearLayout>
<View
android:padding="5dp"
android:layout_width="fill_parent"
android:layout_height="0.5dp"
android:background="#ffe5e8ea"
android:alpha="1" />
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:divider="?android:dividerHorizontal"
android:minWidth="45px"
android:minHeight="115px"
android:background="#ffffff"
android:paddingRight="2dp"
android:paddingLeft="2dp"
android:paddingTop="-1dp">
<ImageView
android:src="@drawable/icon_teacher"
android:layout_width="35.5dp"
android:layout_height="match_parent"
android:id="@+id/imageView1"
android:scaleType="center"
android:layout_weight="0"
android:adjustViewBounds="false"
android:cropToPadding="false"
android:layout_marginTop="2dp" />
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#ffffff"
android:layout_gravity="center">
<TextView
android:text=""
android:textAppearance="?android:attr/textAppearanceSmall"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/Teacher"
android:textColor="#ff000000"
android:layout_gravity="center" />
</LinearLayout>
</LinearLayout>
<View
android:layout_width="fill_parent"
android:layout_height="0.5dp"
android:background="#ffe5e8ea"
android:alpha="1" />
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:divider="?android:dividerHorizontal"
android:minWidth="45px"
android:minHeight="115px"
android:background="#ffffff"
android:paddingRight="2dp"
android:paddingLeft="2dp">
<ImageView
android:src="@drawable/icon_place"
android:layout_width="35.5dp"
android:layout_height="match_parent"
android:id="@+id/imageView1"
android:scaleType="center"
android:layout_weight="0"
android:adjustViewBounds="false"
android:cropToPadding="false"
android:layout_marginTop="1dp" />
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_gravity="center">
<TextView
android:text=":1, 314"
android:textAppearance="?android:attr/textAppearanceSmall"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/pairPlace"
android:layout_gravity="center"
android:gravity="left"
android:textColor="#ff000000" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:weightSum="4"
android:minWidth="45px"
android:minHeight="45px">
<TextView
android:text="20:15-21:45"
android:textAppearance="?android:attr/textAppearanceSmall"
android:layout_width="wrap_content"
android:layout_height="35dp"
android:id="@+id/pairTime"
android:layout_weight="3"
android:background="@drawable/timebackground"
android:gravity="center"
android:layout_gravity="top"
android:textColor="#ff000000" />
<Button
android:text=""
android:layout_width="wrap_content"
android:layout_height="35dp"
android:gravity="center"
android:id="@+id/NotifyBtn"
android:layout_weight="1"
android:textAppearance="?android:attr/textAppearanceSmall"
android:background="@drawable/buttonbackground"
android:textColor="#ffffffff"
android:layout_gravity="right"
android:drawableRight="@drawable/button_notify_inactive"
android:textSize="12dp"
android:alpha="0.9" />
</LinearLayout>
</LinearLayout>
source to share
I'm not sure based on this snipit, but if you are trying to access an Android resource id like the one mentioned by a previous person, you need to use Android.Resource.Id in Xamarin.
If this is not what you want, I would ask if you have a FrameLayout inside your desired container with the id content_frame.
I designed my layout and included FrameLayout, from which I include and use the SupportFragmentManager.
source to share
Android.Support.V4.App.Fragment fragment = null;
switch (position) {
case 0:
fragment = new ScheduleFragment();
break;
case 1:
fragment = new MainFragment();
break;
}
if (fragment != null) {
Android.Support.V4.App.FragmentManager fragmentManager = SupportFragmentManager;
var transaction = fragmentManager.BeginTransaction();
// ---- change this line ---- //
transaction.Replace(R.id.content_frame, fragment);
transaction.Commit();
mDrawerList.SetItemChecked (position, true);
SetTitle (mScreenTitles [position]);
mDrawerLayout.CloseDrawer (mDrawerList);
} else {
Log.Error (this.Class.Name, "Error, fragment not created");
}
source to share