add runtime request permission(android) #2533
Description
I know that is practical duplicate, but I will sugest with "prototype" of cgo and go code...........
Is your feature request related to a problem? Please describe:
sometime is nice to request permision at runtime and sometime the android ignore manifest.xml.......... or sometime I want to be certain I have permision in runtime or change.......
Is it possible to construct a solution with the existing API?
It is possible add, for version media or version v3.....(maybe for early)
Describe the solution you'd like to see:
add to code to internal/driver/mobile/app/android.c or add to code of internal/driver/mobile/android.c or somewhere where it pass best, I was trying in internal/driver/mobile/app/android.c (the patern is https://stackoverflow.com/questions/55062730/how-to-request-android-ndk-camera-permission-from-c-code):
static jmethodID request_permissions; //which init in function ANativeActivity_onCreate
jclass android_permission_name(JNIEnv* env, const char* perm_name) {
// nested class permission in class android.Manifest,
// hence android 'slash' Manifest 'dollar' permission
jclass ClassManifestpermission = find_class(env, "android/Manifest$permission");
jfieldID lid_PERM = (*env)->GetStaticFieldID(env,
ClassManifestpermission, perm_name, "Ljava/lang/String;"
);
jclass ls_PERM = (jclass)((*env)->GetStaticObjectField(env,
ClassManifestpermission, lid_PERM
));
return ls_PERM;
}
bool android_has_permission(JNIEnv* env, const char* perm_name) {
bool result = false;
jstring ls_PERM = android_permission_name(env, perm_name);
int PERMISSION_GRANTED = -1;
{
jclass ClassPackageManager = find_class(env, "android/content/pm/PackageManager" );
jfieldID lid_PERMISSION_GRANTED = (*env)->GetStaticFieldID(env,
ClassPackageManager, "PERMISSION_GRANTED", "I"
);
PERMISSION_GRANTED = (*env)->GetStaticIntField(env,
ClassPackageManager, lid_PERMISSION_GRANTED
);
}
{
jclass ClassContext = find_class(env, "android/content/Context" );
jmethodID MethodcheckSelfPermission = find_method(env, ClassContext,
"checkSelfPermission", "(Ljava/lang/String;)I" );
int int_result =(int) (*env)->CallIntMethod(env,
current_class, MethodcheckSelfPermission, ls_PERM
);
result = (int_result == PERMISSION_GRANTED);
}
return result;
}
void android_request_file_permissions(JNIEnv* env, char* permissions) {
jobjectArray perm_array = (*env)->NewObjectArray(env,
2,
find_class(env, "java/lang/String"),
(*env)->NewStringUTF(env, "")
);
(*env)->SetObjectArrayElement(env,
perm_array, 1,
android_permission_name(env, permissions)
);
(*env)->CallVoidMethod(
current_class, request_permissions, perm_array, 0
);
}
void android_permissions(JNIEnv* env, char* perm_name) {
bool OK = android_has_permission(
env, perm_name
) ;
if(!OK) {
android_request_file_permissions(env,perm_name );
}
}
next add to internal/driver/mobile/app/android.go(or somewhere.........):
func requestPermision(permision string){
n := C.CString(permision)
RunOnJVM(func(vm, jniEnv, ctx uintptr) error {
env := (*C.JNIEnv)(unsafe.Pointer(jniEnv))
C.android_permissions(env, n)
return nil
})
C.free(unsafe.Pointer(n))
}
other OS should have: func requestPermision(permision string){}
maybe add package permision(or put to package storage):
permision/android:
// +build android
package permisions
import (
"fyne.io/fyne/v2/internal/driver/mobile"
)
func RequestPermision(permision string){
mobile.RequestPermision(permision)
}
permision/non_android:
// +build !android
package permisions
func RequestPermision(permision string){}
and in basic it look like:
package main
import (
"fyne.io/fyne/v2/app"
"fyne.io/fyne/v2/container"
"fyne.io/fyne/v2/permisions"
"fyne.io/fyne/v2/widget"
)
func main() {
a := app.New()
w := a.NewWindow("Hello")
hello := widget.NewLabel("Hello Fyne!")
w.SetContent(container.NewVBox(
hello,
widget.NewButton("Hi!", func() {
hello.SetText("Welcome :)")
permisions.RequestPermision("< PERMISION NAME >")
}),
))
w.ShowAndRun()
}
of course I do not know wheter is posible in IOS and on descopt it could request for root...... and I m sorry this is only sugestion prototype because I try to compile them and on doscopt it work(dont cause any error), but I do not know make headers of funkcion android_permissions link to go.......