Java tutorial
//package com.java2s; import android.os.Environment; import android.provider.MediaStore; import android.util.Log; import java.io.File; import java.text.SimpleDateFormat; import java.util.Date; public class Main { /** Create a File for saving an image or video specific to an app name */ public static File getOutputMediaFile(int type, String optionalAppName) { // To be safe, you should check that the SDCard is mounted // using Environment.getExternalStorageState() before doing this. String appname = "CameraApp"; if (optionalAppName != null && !optionalAppName.isEmpty()) { appname = optionalAppName; } File mediaStorageDir = new File( Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), appname); // This location works best if you want the created images to be shared // between applications and persist after your app has been uninstalled. // Create the storage directory if it does not exist if (!mediaStorageDir.exists()) { if (!mediaStorageDir.mkdirs()) { Log.d("MyCameraApp", "failed to create directory"); return null; } } // Create a media file name String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date()); File mediaFile; if (type == MediaStore.Files.FileColumns.MEDIA_TYPE_IMAGE) { mediaFile = new File( mediaStorageDir.getPath() + File.separator + "IMG_" + appname + timeStamp + ".jpg"); } else if (type == MediaStore.Files.FileColumns.MEDIA_TYPE_VIDEO) { mediaFile = new File( mediaStorageDir.getPath() + File.separator + "VID_" + appname + timeStamp + ".mp4"); } else { return null; } //USAGE: // fileUri = Helpers.getOutputMediaFileUri( // MediaStore.Files.FileColumns.MEDIA_TYPE_IMAGE, // Helpers.getApplicationName(this) // ); // create a file to save the image return mediaFile; } }