sd card is not formatting

My Beaglebone black before installing the Ubuntu 14.04 System, the use of the process found in the Ubuntu system under the serial device TTYS1~TTYS5 can not be used, open the serial port will show input/output error, I guess there may be no driver or any other reason, younger brother compared vegetables, so did not find the reason, also did not solve.My solution is to brush back to the factory is the operat

The first few days encountered a problem: Save the image to the SD card in the Android development app, and the user searched in the gallery, similar to the form of the cache. The first idea is to change the suffix name, for example, to save a picture as Image1.txt, so save of course no problem, but in the application of reading in the not, and later did not stud

Idea: similar to disabling or enabling a USB device, the relationship between the Registry path and the principle is the same. Disable: The SD card is a storage device. If the storage device is turned on, no one else can use it to disable it, and "system // storagemanager

;ImportAndroid.graphics.BitmapFactory;ImportAndroid.os.Bundle;ImportAndroid.os.Environment;ImportAndroid.widget.ImageView; Public class mainactivity extends Activity { PrivateImageView MyView =NULL;@Override Public void onCreate(Bundle savedinstancestate) {Super. OnCreate (Savedinstancestate); Setcontentview (R.layout.activity_main); MyView = (ImageView) Findviewbyid (R.id.myview); String path = environment.getexternalstoragedirectory () +"/";//get the

This paper is suitable for fs4412 Development Board, the kernel used is linux4.9.9.1. Modify the device tree VI Arch/arm/boot/dts/exynos4412-liebao.dts Modify: sdhci_2 { bus-width = 2. Configure the Kernel Make Menuconfig 2.1 Configuration SD Card Driver Device Drivers---> 2.2 Support for file systems File Sys

After completing the above preparations, the following describes how to encrypt the SD card:1. Click application on the standby page ].2. Click set ].3. Move the screen up and select security ].4. Select encrypt external SD card ].5. Check the required items based on your actual needs. Here, select encryption as an exa

When you use MediaPlayer to play a local Mp3 file , you need to be aware of the problem with access paths and access permissions .1. Access path:/storage/emulated/0 This path is the root path of the phone, you can download the es file browser software to view the current playing MP3 specific path, through Environment.getexternalstoragedirectory (). GetPath () gets /storage/emulated/0 This sdcard path This in the organization void Android.media.M

in Linux we often use U disk, SD card mount problem, each time manually mount or uninstall is very troublesome, we can take the following methods to achieve automatic mount or uninstall U disk, SD card 1, first in the/ETC/INIT.D/RSC to add the following statement Echo/sbin/m

Solution: After loading the external SD card, through the main menu into the "settings-storage" To set the default storage SD card, when the installation of software, installation interface Select the application installation location for the "SD

Recently, when working on the andoird project, we often encounter different machine models on the client side, resulting inProgramThere is a bug problem, and we cannot locate the exact location of this bug (because there is no log file ). So I found the relevant information about writing program logs to the SD card,

The upload function of an image must provide the path of the uploaded image in the SD card, summarize some columns on the Internet, and modify the code. For more information, see, hope to help you Recently, I am working on an image upload function. I need to provide the path for uploading images to the SD card. I have

In the need of storage, the problem of the path is more confusing for beginners, the following is for Getcachedir (), Getfilesdir (), Getexternalfilesdir (), Getexternalcachedir () Some of the experience, Only for the reference of the Si-mi ...Preferred, need to be clear is the path of the respective representative where the specific locationGetcachedir () Path:/

When we do Android development, we often have this experience, because the customer's device models are different, resulting in a variety of problems, but for developers, because there is no log log files, it is not easy to locate the exact location of the problem. So we need a tool that can write the program log to the SD ca