I want user permission to read and write on external storage. I have used "Permission Handler" dependency v5.0.1+1 but failed to get storage permission. I have declared Read n Write storage permission in android manifest and have set minSdk to 23, target and compile sdk set to 30 in build file.
Error Encounter:
MissingPluginException(No implementation found for method requestPermissions on channel flutter.baseflow.com/permissions/method
You're getting MissingPluginException because platform-specific code is not generated
Just run flutter clean command and rebuild the app
Related
I am trying to write in a .txt file in my flutter program. I am using Permission_handler package and when I run the code (using mi 10) the app ask for permission to access to media and file and I hit allow, and the Debug console says "I/flutter (15890): PermissionStatus.granted" (I mean i did all the part about updating the AndroidManifest.xml or modification on "gradle.properties" , etc.). But when it comes to writing in the file, it throws this error:
E/flutter (15890): [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: FileSystemException: Cannot open file, path = '/storage/emulated/0/Download/X.txt' (OS Error: Operation not permitted, errno = 1)
I really appreciate any thought on this.
Mi 10 runs on Android 10. You need to add the following attribute to the <application> element in the AndroidManifest.xml:
android:requestLegacyExternalStorage="true"
This opts you into the legacy storage model.
Also set targetSdkVersion to 29, and compileSdkVersion to 29 or 30 in build.gradle
I think this happening in Android 11 due to their new changes. So you have to add one more permission (manageExternalStorage).
Like this
if (Platform.isAndroid) {
Map<Permission, PermissionStatus> statuses = await [
Permission.manageExternalStorage
].request();//Permission.manageExternalStorage
}
Even you have to add read & write permission as well.
I am trying to run Espresso tests on Android bundle uploaded to firebase testlab. I have also included the firebase Screenshotter library. I get the following errors in firebase test lab:
09-18 05:22:13.937: E/cloud_screenshotter(18993): Exception taking screenshot: java.io.FileNotFoundException: /sdcard/screenshots/com.augustinus.fcmtest.LoggedInTests-haveVideoCallScreen-CallNotification-1.jpg: open failed: ENOENT (No such file or directory)
I already have storage permissions and this shows up at the start of logs:
09-18 02:51:37.784: I/GrantPermissionCallable(18946): Permission: android.permission.READ_EXTERNAL_STORAGE is already granted!
09-18 02:51:37.785: I/GrantPermissionCallable(18946): Permission: android.permission.WRITE_EXTERNAL_STORAGE is already granted!
09-18 02:51:37.785: I/GrantPermissionCallable(18946): Permission: android.permission.READ_EXTERNAL_STORAGE is already granted!
The device used is a physical device. Pixel 4, API Level 29
UPDATE:
Have tested again and can confirm the issue exists on Api level 29 but not Api Level 28. On APi Level 29 (Android 10) there have been some changes to how accessing storage works. Accessing the shared media folders is different. Very likely Firebase ScreenShotter has not been updated to cope with API level 29.
Ideally Google Firebase needs to udpate their ScreenShotter library to work with API Level 29. As a short term solution you can add the following in your AndroidManifest.xml
<application
android:requestLegacyExternalStorage="true"
I have updated my Android Studio to 3.4.1 and Im using target sdk version 28 . I run my previous project. Now I got many errors : getContex or ContextCompat.checkSelfPermission() is not defined.
UPDATE: here is the error:
error: cannot find symbol method getContext()
error: cannot find symbol method shouldShowRequestPermissionRationale(MainActivity,String)
How can I fix it?
ContextCompat.checkSelfPermission(Context context, String permission) method is used simply for checking whether you are having requested permission available for your app or not.
If your app needs a dangerous permission, you must check whether you have that permission every time you perform an operation that requires that permission. Beginning with Android 6.0 (API level 23), users can revoke permissions from any app at any time, even if the app targets a lower API level.
ActivityCompat.requestPermissions(Activity activity, String[] permissions,int reqCode) method is used for requesting permissions
Thanks for all answers.I add implementation 'com.android.support:support-v4:28.0.0' to build.gradle. Before it I just have implementation 'com.android.support:appcompat-v7:28.0.0' and It works.
I have downloaded a file, and saved in a directory
cordova.file.externalRootDirectory+'appName/'+file;
and I am using cordova-plugin-file-opener2 plugin to access that file.
But I am getting following error in few phones:
ava.io.FileNotFoundException: /storage/emulated/0/appName/7cc45cf629027499_05750_BG.jpg (Permission denied)
I have checked that file exists at this location.
This depend on the OS, on the new OS version like Nouget you must have read and write permission . Since Android 6.0, the Android permissions checking mechanism has been changed. To make it easier, just use https://github.com/NeoLSN/cordova-plugin-android-permission plugin.
on android I just used the following directory and it worked like a charm:
cordova.file.externalApplicationStorageDirectory
information source
By the way, the FileNotFoundException also occurs when you have permission issues (at least in this plugin).
I'm looking for a quick way to identify missing Android permissions. According to Android Tools Project Site here: http://tools.android.com/tips/lint-checks, Android Studio 1.4 is able to check MissingPermission:
MissingPermission
Priority: 9 / 10 Severity: Error Category: Correctness
This check scans through your code and libraries and looks at the APIs
being used, and checks this against the set of permissions required to
access those APIs. If the code using those APIs is called at runtime,
then the program will crash.
Furthermore, for permissions that are revocable (with targetSdkVersion
23), client code must also be prepared to handle the calls throwing an
exception if the user rejects the request for permission at runtime.
However, when I try ./gradlew lint check MissingPermission, the output is:
Task 'MissingPermission' not found in root project 'Android'.
(I have to use the command line because AS always freezes when I use Analyze - Inspect Code from UI.)
If I run ./gradlew lint, Lint report doesn't complain missing permission even if I remove android.permission.INTERNET.
Any ideas on this Lint option?