android 4 4 external sd card

This article is translated from https://www.securecoding.cert.org/confluence/display/java/DRD00-J.+Do+not+store+sensitive+information+on+ External+storage+%28sd+card%29+unless+encrypted+first, there are additional deletions.Android offers several options for saving persistent application data, one of which is external storage (/sdcard,/mnt/sdcard). The

", Toast.length_short). Show (); } } Public voidonclick10 (view view) {if(Environment.getexternalstoragestate (). Equals (environment.media_mounted)) {//1. Get the content you want to store//String content = Et_5.gettext (). toString (); //2. Get the external storage directory with package name--only to the root directoryString Sdpath =environment.getexternalstoragedirectory (). GetAbsolutePath (); //Toast.maketext (activitydata.this, "sdpath="

files like your phone's own file system browser.Whether it's an internal SD card or an external SD card, it's a phone's external storage, and the phone's internal storage and external

The previous section describes how to store files to an internal device. Sometimes, you need to store files to an external storage device, such as an SD card. Because SD cards have greater storage space, they can also be easily shared with other users. Use the example in the previous section to save the text entered b

Android provides several options for storing persistent application data, one of which is external storage (/sdcard,/mnt/sdcard ). External Storage includes a micro-or standard-sized SD card inside the device, an Android device me

The previous section describes how to store files to internal devices. Sometimes, you need to store files to external storage devices, such as SD cards. Because the SD card has a larger storage space and can easily share these files with other users. Use the example in the previous section to save the text you entered

Code used in this blog: http://download.csdn.net/detail/king_bingge/5739167 I haven't written a blog for several days, and I 've been busy with the opening Cup for the past few days. Due to some inharmonious factors, I started preparing for today's opening Cup reply yesterday. Although I don't know what the result is, however, I personally feel that there are still some innovative ideas, that is, the primary judges and teachers are dragging on to our consumption object and no longer think about

The premise is that the phone needs to be rooted.Then use a text editor to open the "platform.xml" file in the/system/etc/permissions directory (Mount read/write), Restart your phone and you will find that you can create, modify, and delete data to an external memory card (SD card).

for Android2.3 of systems,environment.getexternalstoragedirectory () Get the directory is built-in SD card or external SD card is not guaranteed, and the handset manufacturer's modification, Can only be judged by environment.isexternalstorageremovable ().,If True is

SD card. The process displays the time consumption, file size, and speed. (4) There are multiple methods to view the copy object in the SD card. The first is to directly click the menu music in the simulator to play the video and you can see the tested song, or devtools->

returned by mount is reflected in one line of information,So split the string with the newline character first.String[] lines = strmountinfo.split ("\ n");Empty the String object and use it to load the list of truly useful SD card pathsStrmountinfo = "";for (int i = 0;i i++){If there are/mnt/and VFAT strings in the line, it may be the mount path of the internal/externa