android-sdcard

问题 in my app i am taking screenshot of the current screen and save it in sdcard. but in the case screenshot is not saved in sdcard. how to take screen shot and send the captured screen shot in email as attachment. please help me. my coding: View v1 = view.getRootView(); v1.setDrawingCacheEnabled(true); Bitmap bm = v1.getDrawingCache(); try { System.out.println("path "+Environment.getExternalStorageDirectory()); FileOutputStream out = new FileOutputStream(Environment.getExternalStorageDirectory()

问题 I have an app which downloads large amounts of content (it varies between users but could be 200mb to 1GB or more). Currently I save all of this content on External Storage as this is likely to be the area with the most space, such as an SD card. This works fine for the most part however there is a situation where this isn't necessarily ideal. If the device has in built external storage, like most tablets, but also has an SD card slot, the external storage issue gets a little complicated. The

问题 I have an app which downloads large amounts of content (it varies between users but could be 200mb to 1GB or more). Currently I save all of this content on External Storage as this is likely to be the area with the most space, such as an SD card. This works fine for the most part however there is a situation where this isn't necessarily ideal. If the device has in built external storage, like most tablets, but also has an SD card slot, the external storage issue gets a little complicated. The

问题 I have application with images and I want share image which is choosen by user in some other application. From other question here I know that I must put the image in public place so it can be accesed by other application. But I still get error "no application can perform this action" any idea where am I doing mistake? Code for copying image to SD card: String path = Environment.getExternalStorageDirectory().toString(); File file = new File(path,String.valueOf(idOfImage)); if (!file.exists())

问题 I am having trouble gaining write access to device SD card root directory. I can write to device internal storage and app package folder in an SD card without problems. I found that gaining access to an SD card is possible using Storage Access Framework, so I looked at other apps to see how they gain access to an SD card, and found Total Commander with its neat permission dialog. How to show such a dialog because I cannot find any examples? My goal is to store large files on the SD card that

问题 I am having trouble gaining write access to device SD card root directory. I can write to device internal storage and app package folder in an SD card without problems. I found that gaining access to an SD card is possible using Storage Access Framework, so I looked at other apps to see how they gain access to an SD card, and found Total Commander with its neat permission dialog. How to show such a dialog because I cannot find any examples? My goal is to store large files on the SD card that

问题 I was trying to save text file using below code try { FileOutputStream fos = new FileOutputStream(TXT_FILE_NAME, true); FileWriter fWriter; try { fWriter = new FileWriter(fos.getFD()); fWriter.write(binding.tvExtractedResult.getText().toString()); fWriter.close(); } catch (Exception e) { e.printStackTrace(); } finally { fos.getFD().sync(); fos.close(); Toast.makeText(this, "File Saved Successfully", Toast.LENGTH_LONG).show(); } } catch (Exception e) { Toast.makeText(this, "Error while saving

问题 I was trying to save text file using below code try { FileOutputStream fos = new FileOutputStream(TXT_FILE_NAME, true); FileWriter fWriter; try { fWriter = new FileWriter(fos.getFD()); fWriter.write(binding.tvExtractedResult.getText().toString()); fWriter.close(); } catch (Exception e) { e.printStackTrace(); } finally { fos.getFD().sync(); fos.close(); Toast.makeText(this, "File Saved Successfully", Toast.LENGTH_LONG).show(); } } catch (Exception e) { Toast.makeText(this, "Error while saving

问题 This code works correctly under 6.0.1 android version but if i run this application on 6.0.1 android devices , it will not save images to sd card. What i need to update for 6.0.1 devices ? public void SaveImages(int a ,String b) { Bitmap bitmap = null; OutputStream output; if(a==0) { bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.image_0); } File filepath = Environment.getExternalStorageDirectory(); // Create a new folder in SD Card File dir = new File(filepath

问题 I wrote a class that shall make it possible to record an audio, save it to the sd card and then play the result. Here is my code: public void recordAudio(final String fileName) { final MediaRecorder recorder = new MediaRecorder(); recorder.reset(); ContentValues values = new ContentValues(3); values.put(MediaStore.MediaColumns.TITLE, fileName); recorder.setAudioSource(MediaRecorder.AudioSource.MIC); recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); recorder.setAudioEncoder