clean device storage android

silent = settings. getBoolean ("silentMode", false );SetSilent (silent );}@ OverrideProtected void onStop (){Super. onStop ();// We need an Editor object to make preference changes.// All objects are from android. context. ContextSharedPreferences settings = getSharedPreferences (PREFS_NAME, 0 );SharedPreferences. Editor editor = settings. edit ();Editor. putBoolean ("silentMode", mSilentMode );// Commit the edits!Editor. commit ();}}Internal

"memory_available" and getandroid:key= "Memory_sd_avail" style= "? android:attr/ Preferenceinformationstyle " android:title=" @string/memory_available " android:summary = "xx"/>Find "Memory_sd_avail" and getThis string is the SD card remaining capacity formatsize (Availableblocks * blockSize) + readOnly These two parameters multiply, Get the remaining capacity of the SD card in bytes availableblocks * blockSizeThe storage

1, File cachedir = Context.getcachedir ();The application internal storage (data file private) file is stored in this path, do not need to request permission, when the application is uninstalled, the files in the directory will be deleted.It is important to note that the directory of this file is related to the storage location of the application,When the application is moved to an external

Data persistence means that the instantaneous data in memory is saved to the storage device, ensuring that the data is not lost even when the phone or computer shuts down. The data stored in memory is instantaneous, while the data stored in the storage device is persisted, and persistence provides a mechanism for trans

present or the SD card is not removable, call the Getexternalcachedir () method to get the cache path, or call the Getcachedir () method to get the cache path. * The former acquires/SDCARD/ANDROID/DAta/When it comes to Android network operation and storage device read and write, do not forget to add the relevant permi

Reprint Please specify source: Minsan Android There are different ways to store and manage application data (Sharedperferences,file,sqlitedatabase, networked storage) under the Android platform, and the choice of methods depends on the type of data you need to store and how it is structured. SQLite database can solve the problem of

Recently made a small app about the album, need to read the storage device of the Android phone, first need to obtain the system read and write permission, in the online a good find, for the veteran, may be easy, for the rookie, it is a little difficult, in order to learn, especially write some of their own experience to write down, for reference. If there is any

Public static file getrootdirectory () Obtain the root folder directory in Android To read sdcard data, follow these steps: 1. First, determine whether the mobile phone device has the sdcard permission and read and write the sdcard. Environment. getexternalstoragestate (). Equals (environment. media_mounted) 2. Call environment. getexternalstoragedirectory () to obtain the external

Environment.getexternalstoragedirectory () is the SD card directory built into the system.On different devices, callThe getExternalStorageDirectory () return value is not the same. Query the Android document, only to find the reason, originally this method returned is the current device manufacturers think of "external storage", it is possible to return to the e

directory is not the system's built-in SD card directory. I switched to a Sony l39u, a MOTO G, the directory that calls Environment.getexternalstoragedirectory () is the system's built-in SD card directory. On different devices, the return value of the call getExternalStorageDirectory () is not the same. Check the Android document to find out why, the original method returned by the current device manufa

There are typically three ways to store data stored in Android: Sharedpreferences, files, and SQLite databases that hold data for long periods of time. This article will be a few specific small examples to explain the specific implementation of these three ways.sharedpreferences of data storage:The sharedpreferences is located in the Android.content package for storing a small amount of simple data. The features are:1. Lightweight data

Android under the application of the path and javase different, the application of the data to save their own folder inside> > Getfiledir (); Get your own folder/data/data/package name (application name)/Files> Getcachedir (); /data/data/Package Name (name of application)/The cache Google gives us a directory of two applications, the files directory, which holds important application data. The phone does not automatically

File Storage Technology in Android File storage is a function that every system should have. Android is developed in Java, so its file storage function is basically the same as J2SE. Why Is Nas introduced? If we store large files and images only on mobile phones, we generall

Android Development using SQLite for data storage Android Development using SQLite for data storage A simple introduction to SQLite database How to use SQLite in Android 1 Creating a Sqliteopenhelper object and creating a table

File storage is a feature that every system should have, and the Android system is developed in the Java language, so its file storage functions are basically the same as J2SE. Why is file storage introduced? Because large files, pictures, etc. if we only store in the mobile phone is very limited, is generally used wit

applications; Activity. mode_append // This mode checks whether the file exists and appends the content to the file. Otherwise, a new file is created. // If you want the file to be read and written by other applications, You can input activity. mode_world_readable + activity. mode_world_writeable. View the files generated by preferences (select the current file and export this file. You can see that the stored data is actually an XML node) You can do an exercise, for example, to con