android-10.0

问题 I know it seems like a very basic question, but it's specifically for Android Q. I just want to get an image from Gallery and compress it and send to the server. But because of the Android Q's Scoped Storage, it's harder than I thought. I'll first explain what I did with code: First I send out the intent to pick the image. fun openGallery(fragment: Fragment){ val intent = Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI) intent.type = "*/*" val mimeTypes = arrayOf(

问题 I want to install a 3rd party app from the filesystem from my xamarin android app. The code I used successfully before Android 10 was pretty straightforward and easy. Intent intent = new Intent(Intent.ActionView); Uri data = Uri.FromFile(file); intent.SetDataAndType(data, "application/vnd.android.package-archive"); context.StartActivity(intent); This code does not work on Android 10 because of ACTION_VIEW and ACTION_INSTALL_PACKAGE were deprecated in Android 10. Looks like we now need to use

问题 Background I've noticed that in WifiManager class there is a function called addNetwork, that might be useful if I want to restore or save networks information (network name AKA SSID, together with the password and the type), so that I could also connect to it. The problem I can't find much information about how to do such a thing. I've seen various examples on StackOverflow, and if I target Android API 28 (or below), I indeed succeed to make it add a network and even connect to it. When

问题 As in Android Q, several WiFi APIs are restricted. I am trying to use alternate APIs to connect to different Wifi AP for internet. Below is my code : WifiNetworkSpecifier.Builder builder = new WifiNetworkSpecifier.Builder(); builder.setSsid("wifi-ap-ssid"); builder.setWpa2Passphrase("wifi-ap-password"); WifiNetworkSpecifier wifiNetworkSpecifier = builder.build(); NetworkRequest.Builder networkRequestBuilder1 = new NetworkRequest.Builder(); networkRequestBuilder1.addTransportType

问题 My application works fine from Android 4.3 until Android 9 Pie, but my application doesn't work on Android 10 (Q API 29) and crashes. This is my logcat - why this is happening? java.lang.RuntimeException: Unable to start activity ComponentInfo{ir.mahdi.circulars/ir.mahdi.circulars.MainActivity}: android.view.InflateException: Binary XML file line #17 in ir.mahdi.circulars:layout/abc_screen_simple: Binary XML file line #17 in ir.mahdi.circulars:layout/abc_screen_simple: Error inflating class

问题 I'm getting this warning as the first line from my app in logcat, and I have no idea what it refers to and how I should go about fixing it. Google doesn't offer much info on this (in fact, none at all). Please advise. What kind of flags might this be about? Is there a way to find out what the specified bit might refer to (or, perhaps, has been referring to on older Android versions)? There is no such line in the log on Android 9 or earlier versions. 回答1: I searched and I have some suggestion

问题 In Android 10 there apply new restrictions for apps. We can no longer start an activity from background. While this may be fine for the majority of apps, it's a killing blow for voip-apps that need to show an incoming call after a push notification arrived. According to this https://developer.android.com/guide/components/activities/background-starts there is a list of conditions that can be met to still allow opening an activity, but tbh I do not understand that fully (non-english-native here

问题 I am new in android development and i am facing some problem to read getExternalStorageDirectory in java, I have read https://developer.android.com/reference/android/os/Environment but can't understand, can someone help me with example code in java. 回答1: From the docs you can see: getExternalStoragePublicDirectory(String type) This method was deprecated in API level 29. To improve user privacy, direct access to shared/external storage devices is deprecated. When an app targets Build.VERSION

问题 Background Before Android Q, it was always possible to set which items to show on the sharing dialog, and in which order. I even wrote about it here. For example, if you wanted to prioritize some apps over others, you could use: fun getChooserIntent(context: Context, intent: Intent, chooserTitle: String?, vararg preferredOrderOfApps: String): Intent? { val resolveInfos = context.packageManager.queryIntentActivities(intent, 0) if (resolveInfos.isNullOrEmpty()) return null val

问题 Once I switch my target api to 'Q' I cannot install the APK on Android Q Emulator. I get error: Failed to finalize session : INSTALL_FAILED_INVALID_APK: Failed to extract native libraries, res=-2 Android Studio (v3.3.2) recommends I uninstall apk first. I tried uninstalling apk and I still get the same error. App work if I downgrade target api to 28. 回答1: This happens because of an issue with zipalign, see - https://issuetracker.google.com/issues/37045367. You need to set extractNativeLibs in