how to delete unwanted files in android

The new version of the micro-letter and QQ on the introduction of the sliding delete feature is now a more popular feature. In fact this sliding delete control, GitHub already has, is a popular open source framework Swipelistview. However, this swipelistview is a framelayout, that is, a two-storey layout, the above layout front cover the following layout back, sliding will slide open front, so that the foll

Android uses the xUtils framework to add, delete, modify, and query sqllite. First download xUtils,: https://github.com/wyouflf/xUtils compressed downloaded files, copy the jar package into the project: Create a User class to test, add, delete, modify, and query package com.example.xutilsdemo;public class User { pr

Start the android simulator first. Open the CMD command line window. Enter ADB-s emulator-5554 Shell Now you can manage system folders, and then enter ls The folder and file are listed. Enter CD system/APP and then ls. You can see the application APK file of the system, delete the app you want to delete, such as phone.apk, and enter RM phone.apk. The system p

capturing IOException when writing to a file, this method replaces the space-size check. Suppose you don't know how much space you need.Delete files: When you no longer need a file you need to delete it, the most straightforward way is to directly call the File.delete () method to delete. Suppose this file is stored on the internal storage. You can also call the

, so is the Volume amplification key +9. Auto-fill path: For example, the path is/usr/bin/autostart.sh Then the input/usr/bin/aut press TAB to be able to complement all/usr/bin/autostart.sh This will make it impossible to enter the garbled characters automatically fill up . Step Poly: 1, open the terminal with ls command to see the file name to be deleted Ls-a file path -A indicates that hidden files are displayed Eg:ls-a/etc/ 2 .

Android high-imitation photos, multiple choice, preview, and delete (remove photos) album functions First, it is better to declare that it is better to teach people and fish than to teach people and fish. Only one idea can be provided. Of course, if you need the source code, you can ask me the source code privately for a fee: QQ: 508181017. After nearly three years of work, I have never been able to take

Android Studio com. android. dex. DexException: Multiple dex files define (repeated reference package), androiddefine If you use Android Studio for development and use other projects as libraries, this problem is very easy to occur. This problem occurs because the package is repeatedly referenced, which means that a p

Document directory Solution: Solution: Http://my.oschina.net/haquanwen/blog/54394 Listview is a commonly used display control. The default background is the same transparent color as the system window. If a background image or background color is added to listview, The listview will be black when scrolling, because, during scrolling, when the view in the list is re-painted, the system still uses the default transparent color. The color value is # ff191919. to change this situation, you only n

When you delete a file, and then re-download the same name file, save to SDcard error, some phones appearcaused By:libcore. io. Errnoexception: Open failed:ebusy (Deviceor resource busy)At Libcore. Io. Posix. Open(Native Method)At Libcore. Io. Blockguardos. Open(Blockguardos. Java:+)At Java. io. File. createnewfile(file. java:941)This problem in Xiaomi 3, Huawei series mobile phones appear more likely.The file creation failed because the file was dele

directly call the File.delete () method to delete. If the file is stored on an internal store, you can also call the Context.deletefile (String name) method class to delete the file.When the user uninstalls your app, the Android system will delete your files: 1, all

/yourproject/del.txt"; Public Static void Main(string[] args) {Try{DeleteFile (dir); }Catch(IOException ex) {System.out.println ("Etes"); } }Private Static void DeleteFile(String dir)throwsIOException {//TODO auto-generated method stubFile File =NewFile (dir); InputStreamReader Read =NewInputStreamReader (NewFileInputStream (file),"UTF-8");//Considering the encoding formatBufferedReader Breader =NewBufferedReader (read); String string =""; while(String = Breader.readline ())! =NULL) {//loop R

1. Because you need to delete files, you need the following permissions: 2. Core code [Java]Package com. example. deleteyoumi;Import java. io. File;Import android. OS. Bundle;Import android. OS. Handler;Import android. OS. Message;Import

. activity;Import Android. OS. Bundle;Public class mainactivity extends activity {/** Called when the activity is first created .*/@ OverridePublic void oncreate (bundle savedinstancestate ){Super. oncreate (savedinstancestate );Setcontentview (R. layout. Main );}} We use Android-apktool to decompile this APK. For the use of Android-apktool, I will not do much tr

] = = '. ') | |(Name_len = = 2 de_src->d_name[0] = = '. ' de_src->d_name[1] = = '. ')) {Continue}else {src dir path Append the folder ' s D_namesprintf (Src_file_path, "%s/%s", Src_dir_path, De_src->d_name);printf ("src dir path:%s\n", Src_file_path);Des dir path Append the folder ' s D_namesprintf (Des_file_path, "%s/%s", Des_dir_path, De_src->d_name);printf ("Des dir path:%s\n", Des_file_path);printf ("---entry sub dir to restore\n");ret = Restore_dir_file (Des_file_path, Src_file_path);prin

We know that data interaction between two Android applications requires contentprovider, which is usually a database operation.Today, the project needs to use the contentprovider of Android to interact with files on the normal SD card, so I wrote this small example:Androidmanifest. xml Testcontentprovider. Java Package COM. h3C. test; import Java. io. file; impo

In the previous article, I introduced how to query the multimedia files in the sdcard in the program and display them in the playlist. However, if you delete or add some multimedia files in the sdcard, how can I update the playlist? Here I will share some of my solutions in the project, hoping to help you. First of all, I will briefly introduce how

1. Because you need to delete files, you need the following permissions: 2. Core code Package COM. example. deleteyoumi; import Java. io. file; import android. OS. bundle; import android. OS. handler; import android. OS. message; import

The SD card uses a fat (File Allocation Table) file system and does not support access mode and permission control. The SD card is suitable for storing large-sized files or files without the need to set access permissions.Android simulators support SD card, but the simulator does not have the default SD card. Developers must manually add the SD card image file to the simulator.To read/write SD card

the public files to the external store: Copy Code code as follows: Public File Getalbumstoragedir (String albumname) { Get user's public picture directory File File = new file (Environment.getexternalstoragepublicdirectory ( environment.directory_pictures), albumname); if (!file.mkdirs ()) { LOG.E (Log_tag, "Directory not created"); } return file; } 2. Proprietary files