android-external-storage

问题 Can you help my? I have created and published the app on Google play store that contains a database, I have tested it on different android phones. My app works perfect on android version (Android 10,8,5 etc...) except on Android 9, do you know how can I fix that problem? I find that problem on Huawei Smart Z, Honor P20, Samsung Y6,Xiaomi Mi. Play store console says that my app can run on that models. I am beginner in app development. This happening on mine Huawei Smart: when I install the app

问题 Before API 29, we could have easily retrieved a media file from external storage using these lines of code. val dirName = Environment.getExternalStorageDirectory().absolutePath + "/$appName/" val fileName = "$appName_$timeStamp.$extension" val dir = File(dirName) val file = File(dir, fileName) But I was unable to find a code snippet which can achieve the same thing using Mediastore API. Since getExternalStorageDirectory is deprecated in API 29, I don't know how to do. I have searched about

问题 When I click a load button, the file content does not load in TextView There appears to be an error uploading the file in BufferedReader in ReadText method. And this is a picture from "Logcat" public class MainActivity extends AppCompatActivity private static final int READ_REQUEST_CODE = 42; private static final int PERMISSION_REQUEST_STORAGE = 1000; Button b_load; TextView tv_output; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);

问题 In my app I have created a class name Untility where I wrore the code for permission of READ_EXTERNAL_STORAGE. But the problem is when I click Deny on the app, I am not finding the alert notification to set it allow again. Initialy I have the option "Never ask Again". Once I clicked on it, the dialog desapperas. and now after running the app if I click on deny, I cannot find Dialog message anymore to make it allow again. How can I modify my code to show this message every time. My Utility

问题 I want to create a text file on my android phone and write some text into it. When I click on the button it says saved to /data/user/0/com.example.savetotextfile/files/example.txt But I can't find these folders. Most apps are in Device storage > Android > data, but the apps that I created myself are not in there. Am I missing a permission? I don't want to write to an sd card. public class MainActivity extends AppCompatActivity { private static final String FILE_NAME = "example.txt"; EditText

问题 I am working on a photo editor app in which after editing my picture I save it into my local storage. It is working fine till android 9 but not on android 10. It shows exception of "No such file or directory found" in Android 10. After some research I found that getExternalFilesDir() is deprecated in android Q+. But I cannot find any proper way to do it in android 10. So please if anyone can provide a tutorial it would be really helpful. I've added and granted uses-permission android:name=

问题 I am working on a photo editor app in which after editing my picture I save it into my local storage. It is working fine till android 9 but not on android 10. It shows exception of "No such file or directory found" in Android 10. After some research I found that getExternalFilesDir() is deprecated in android Q+. But I cannot find any proper way to do it in android 10. So please if anyone can provide a tutorial it would be really helpful. I've added and granted uses-permission android:name=

来源： https://stackoverflow.com/questions/64662319/permission-denied-save-file-to-sdcard-on-adnroid-studio

来源： https://stackoverflow.com/questions/19691171/how-to-share-data-across-a-group-of-applications-in-android

来源： https://stackoverflow.com/questions/19691171/how-to-share-data-across-a-group-of-applications-in-android