中/下载文件夹位置使用和不使用SD卡的设备 [英] Location of /Downloads folder for devices with and without SD card

问题描述

请让我知道什么是下载文件夹中有和没有SD卡设备的默认位置。

Please let me know what are default locations for Downloads folder on devices with and without SD card.

和我怎么能检查是否特定的手机没有SD卡。

And how can I check if particular phone doesn't have SD card.

推荐答案

要检查，看看设备是否具有SD卡，可以使用： Environment.getExternalStorageState（）如果你没有SD卡，可以使用： Environment.getDataDirectory（）

To check and see if a device has an SD card, you use: Environment.getExternalStorageState() if you don't have an SD card, you use: Environment.getDataDirectory()

从本质上讲，如果没有SD卡，您可以在本地创建自己的设备上的目录。我列出了一些code，可以帮助：

Essentially, if there is no SD card, you can create your own directory on the device locally. I've listed some code that might help:

/*
             * This sections checks the phone to see if there is a SD card. if
             * there is an SD card, a directory is created on the SD card to
             * store the test log results. If there is not a SD card, then the
             * directory is created on the phones internal hard drive
             */
                    //if there is no SD card, create new directory objects to make directory on device
            if (Environment.getExternalStorageState() == null) {
                            //create new file directory object
                directory = new File(Environment.getDataDirectory()
                        + "/RobotiumTestLog/");
                photoDirectory = new File(Environment.getDataDirectory()
                        + "/Robotium-Screenshots/");
                /*
                 * this checks to see if there are any previous test photo files
                 * if there are any photos, they are deleted for the sake of
                 * memory
                 */
                if (photoDirectory.exists()) {
                    File[] dirFiles = photoDirectory.listFiles();
                    if (dirFiles.length != 0) {
                        for (int ii = 0; ii <= dirFiles.length; ii++) {
                            dirFiles[ii].delete();
                        }
                    }
                }
                // if no directory exists, create new directory
                if (!directory.exists()) {
                    directory.mkdir();
                }

                // if phone DOES have sd card
            } else if (Environment.getExternalStorageState() != null) {
                // search for directory on SD card
                directory = new File(Environment.getExternalStorageDirectory()
                        + "/RobotiumTestLog/");
                photoDirectory = new File(
                        Environment.getExternalStorageDirectory()
                                + "/Robotium-Screenshots/");
                if (photoDirectory.exists()) {
                    File[] dirFiles = photoDirectory.listFiles();
                    if (dirFiles.length > 0) {
                        for (int ii = 0; ii < dirFiles.length; ii++) {
                            dirFiles[ii].delete();
                        }
                        dirFiles = null;
                    }
                }
                // if no directory exists, create new directory to store test
                // results
                if (!directory.exists()) {
                    directory.mkdir();
                }
            }// end of SD card checking

希望这有助于。

Hope this helps.

这篇关于中/下载文件夹位置使用和不使用SD卡的设备的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！