android-file

问题 My Problem: When openFile() intent attempts StartActivityForResult , the application hangs with a blank screen and circular cursor. The file(s) are stored to app. What I have done: Before and after this issue I researched how to open files by use of Intents. I found a number of similar but different approaches and either used the literal example or a combination of various examples to see if I could find and resolve the issue (see some below). I'm not receiving any type of error message that

问题 My Problem: When openFile() intent attempts StartActivityForResult , the application hangs with a blank screen and circular cursor. The file(s) are stored to app. What I have done: Before and after this issue I researched how to open files by use of Intents. I found a number of similar but different approaches and either used the literal example or a combination of various examples to see if I could find and resolve the issue (see some below). I'm not receiving any type of error message that

问题 I want to have image.png inside cache/images/ in Internal Storage of Android. I am not able to have it with following code: File directory = new File(getContext().getCacheDir(), "images"); directory.mkdirs(); File mypath=new File(directory,"image.png"); FileOutputStream fos = null; try { fos = new FileOutputStream(mypath); bmap.compress(Bitmap.CompressFormat.PNG, 100, fos); } catch (Exception e) { e.printStackTrace(); } finally { try { fos.close(); } catch (IOException e) { e.printStackTrace(

问题 Despite this being a simple question I cannot find the answer on google or stackoverflow. When I use the following code I get this result //com.android.externalstorage.documents/tree/primary:Podcasts var intent = new Intent(Intent.ActionOpenDocumentTree); intent.PutExtra("android.content.extra.SHOW_ADVANCED", true); intent.PutExtra("android.content.extra.FANCY", true); intent.PutExtra("android.content.extra.SHOW_FILESIZE", true); Can you help me understand the parts of my result? 回答1: How

问题 Despite this being a simple question I cannot find the answer on google or stackoverflow. When I use the following code I get this result //com.android.externalstorage.documents/tree/primary:Podcasts var intent = new Intent(Intent.ActionOpenDocumentTree); intent.PutExtra("android.content.extra.SHOW_ADVANCED", true); intent.PutExtra("android.content.extra.FANCY", true); intent.PutExtra("android.content.extra.SHOW_FILESIZE", true); Can you help me understand the parts of my result? 回答1: How

问题 Read that Android 11 has scoped storage, but I can't find any information, how can I create and use folder in /storage/emulated/0/ ? Old methods works only on api 29 and below :( 回答1: On Android 11 the restrictions in Android 10 concerning access to external storage are much less. Environment.getExternalStorageDirectory() is readable again and Environment.getExternalStoragePublicDirectory(...) is writable for folders like Environment.DIRECTORY_DOCUMENTS and so on. The Android OS is very picky

问题 Read that Android 11 has scoped storage, but I can't find any information, how can I create and use folder in /storage/emulated/0/ ? Old methods works only on api 29 and below :( 回答1: On Android 11 the restrictions in Android 10 concerning access to external storage are much less. Environment.getExternalStorageDirectory() is readable again and Environment.getExternalStoragePublicDirectory(...) is writable for folders like Environment.DIRECTORY_DOCUMENTS and so on. The Android OS is very picky

来源： https://stackoverflow.com/questions/39354275/how-to-get-data-from-mediastore-file-and-mediastore-file-filecolumn

来源： https://stackoverflow.com/questions/39354275/how-to-get-data-from-mediastore-file-and-mediastore-file-filecolumn

来源： https://stackoverflow.com/questions/39354275/how-to-get-data-from-mediastore-file-and-mediastore-file-filecolumn