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il...@google.com
il...@google.com
Only the `argType="reference"` accepts resource IDs (and returns an int that you'd pass to getContext().getString()), so it is working as intended that a "string" type is exactly what you put into your XML. It was important that the build time code gen and the runtime behavior always matches and that was not possible in the general cases - see edge cases such as https://issuetracker.google.com/issues/111736515 for some background.
Please starhttps://issuetracker.google.com/issues/36994900 to track progress towards allowing placeholders in XML files, which would be the recommended way of filling in placeholders at compile time.
Please star
sl...@czerwinski.info.pl
Ok thanks, I understand now, I wasn't aware of argType="reference". Anyway I think it is a bit strange that behavior is different if we navigate using safe args gen code (navController.navigate(WebPageFragmentDirections.actionGlobalHomeFragment())) and code without safe args (navController.navigate(R.id.homeFragment)) if the navigation xml file is the same.
il...@google.com
Yes, I think we can make it more explicit that only reference types can have references to other resources.
il...@google.com
ap...@google.com
Project: platform/frameworks/support
Branch: androidx-master-dev
commit bb456e84a524d4e5cd241a6a839a1062297b9cf4
Author: Ian Lake <ilake@google.com>
Date: Thu Jan 31 15:46:55 2019
Enforce "reference" types for reference default values
In order to ensure that inflation of a navigation
graph results in the same arguments as Safe Args,
we now enforce usage of the "reference" type for any
argument that has a defaultValue that references
another resource (i.e., @string/app_name, etc).
This makes it much more obvious that the default value
in Safe Args is in the form of R.string.app_name and
any provided override for that should also be in the
form of R.string.some_value.
In these cases, it is expected that developers either
1) Use the ids directly (for example, passing an
R.string to a method that takes a resource id)
2) Specifically call context.getString() with the
resource id they retrieve from their NavArgs instance.
Test: updated NavInflaterTest
Change-Id: I06b8c9a0d1420821b8c0064c22f176788da43d7a
Fixes: 123551990
M navigation/runtime/src/androidTest/java/androidx/navigation/NavInflaterTest.kt
M navigation/runtime/src/androidTest/res/navigation/nav_default_arguments.xml
A navigation/runtime/src/androidTest/res/navigation/nav_invalid_argument_arg_type.xml
A navigation/runtime/src/androidTest/res/navigation/nav_invalid_argument_default_value.xml
M navigation/runtime/src/main/java/androidx/navigation/NavInflater.java
https://android-review.googlesource.com/891680
https://goto.google.com/android-sha1/bb456e84a524d4e5cd241a6a839a1062297b9cf4
Branch: androidx-master-dev
commit bb456e84a524d4e5cd241a6a839a1062297b9cf4
Author: Ian Lake <ilake@google.com>
Date: Thu Jan 31 15:46:55 2019
Enforce "reference" types for reference default values
In order to ensure that inflation of a navigation
graph results in the same arguments as Safe Args,
we now enforce usage of the "reference" type for any
argument that has a defaultValue that references
another resource (i.e., @string/app_name, etc).
This makes it much more obvious that the default value
in Safe Args is in the form of R.string.app_name and
any provided override for that should also be in the
form of R.string.some_value.
In these cases, it is expected that developers either
1) Use the ids directly (for example, passing an
R.string to a method that takes a resource id)
2) Specifically call context.getString() with the
resource id they retrieve from their NavArgs instance.
Test: updated NavInflaterTest
Change-Id: I06b8c9a0d1420821b8c0064c22f176788da43d7a
Fixes: 123551990
M navigation/runtime/src/androidTest/java/androidx/navigation/NavInflaterTest.kt
M navigation/runtime/src/androidTest/res/navigation/nav_default_arguments.xml
A navigation/runtime/src/androidTest/res/navigation/nav_invalid_argument_arg_type.xml
A navigation/runtime/src/androidTest/res/navigation/nav_invalid_argument_default_value.xml
M navigation/runtime/src/main/java/androidx/navigation/NavInflater.java
il...@google.com
Navigation now enforces use of the "reference" type if you have a defaultValue referencing another resource. This ensures that Safe Args and Navigation's runtime behavior are always in sync.
Please starhttps://issuetracker.google.com/issues/36994900 to track allowing build time placeholders in XML files.
Please star
ap...@google.com
Ok, great, now it is much more straightforward. Thanks!
Description
Version used: 1.0.0-alpha02
Devices/Android versions reproduced on: Emulator API 28, Samsung J5 API 25
Sample project attached.
I'm trying to create a custom Navigator and custom NavDestination that would animate ConstraintLayout (but any custom NavDestination would cause this issue).
Intended behaviour is shown in attached video: Layout_animations.webm
However, when I rotate the screen, while the navigation is on the custom destination, the application crashes.
The crash is caused by an unknown destination, which can only be added after custom navigator.
If I add custom destination in nav_main.xml, the app will also crash, because the navigator is not yet added.
This issue could be fixed by extending NavHostFragment, but I would need to override the whole onCreate() method.
I would need to add my custom navigator right after the line:
mNavController = new NavController(context);
I can think of 2 possible solutions in the library:
1. Delegate creating of NavController, so that a custom NavController can be provided in the XML layout file.
2. Call a new protected method "NavHostFragment.onNavControllerCreated(NavController)" right after the NavController is created, that could be overridden in a custom NavHostFragment, before the graph is created.
If there is any solution to my problem that I didn't think of, please provide a more exhaustive example in the documentation:
Stack trace:
2018-06-25 10:54:28.356 14543-14543/it.czerwinski.customnavigatorexample E/AndroidRuntime: FATAL EXCEPTION: main
Process: it.czerwinski.customnavigatorexample, PID: 14543
java.lang.RuntimeException: Unable to start activity ComponentInfo{it.czerwinski.customnavigatorexample/it.czerwinski.customnavigatorexample.MainActivity}: android.view.InflateException: Binary XML file line #10: Binary XML file line #10: Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2925)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3060)
at android.app.ActivityThread.handleRelaunchActivityInner(ActivityThread.java:4792)
at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4711)
at android.app.servertransaction.ActivityRelaunchItem.execute(ActivityRelaunchItem.java:69)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:110)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:70)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1800)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6649)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:826)
Caused by: android.view.InflateException: Binary XML file line #10: Binary XML file line #10: Error inflating class fragment
Caused by: android.view.InflateException: Binary XML file line #10: Error inflating class fragment
Caused by: java.lang.IllegalStateException: unknown destination during restore: it.czerwinski.customnavigatorexample:id/animatedLayoutDestination
at androidx.navigation.NavController.onGraphCreated(NavController.java:424)
at androidx.navigation.NavController.setGraph(NavController.java:386)
at androidx.navigation.NavController.restoreState(NavController.java:742)
at androidx.navigation.fragment.NavHostFragment.onCreate(NavHostFragment.java:215)
at androidx.fragment.app.Fragment.performCreate(Fragment.java:2400)
at androidx.fragment.app.FragmentManagerImpl.moveToState(FragmentManager.java:1418)
at androidx.fragment.app.FragmentManagerImpl.moveToState(FragmentManager.java:1684)
at androidx.fragment.app.FragmentManagerImpl.onCreateView(FragmentManager.java:3772)
at androidx.fragment.app.FragmentController.onCreateView(FragmentController.java:120)
at androidx.fragment.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:395)
at androidx.fragment.app.FragmentActivity.onCreateView(FragmentActivity.java:377)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:780)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:863)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824)
at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:467)
at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at it.czerwinski.customnavigatorexample.MainActivity.onCreate(MainActivity.kt:15)
at android.app.Activity.performCreate(Activity.java:7130)
at android.app.Activity.performCreate(Activity.java:7121)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1262)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2905)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3060)
at android.app.ActivityThread.handleRelaunchActivityInner(ActivityThread.java:4792)
at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4711)
2018-06-25 10:54:28.356 14543-14543/it.czerwinski.customnavigatorexample E/AndroidRuntime: at android.app.servertransaction.ActivityRelaunchItem.execute(ActivityRelaunchItem.java:69)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:110)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:70)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1800)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6649)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:826)