1. Because you need to delete files, you need the following permissions::
2. Core code
Copy codeThe Code is as follows: package com. example. deleteyoumi;
Import java. io. File;
Import android. OS. Bundle;
Import android. OS. Handler;
Import android. OS. Message;
Import android. app. Activity;
Import
Workaround:Workaround for this problem:1. Right click on Project and select "Properties"2. Select "Java Build Path" on the Left3. Open the "Source" tab panel4. Click "Add Folder ..."5. Tick the "Gen" folder, click OK, click Yes, then click OK6. Finally right click on the project and select "Fix Project Properties" in "Andriod Tools"This problem occurs because of
SD card path problems and how to get sdcard memoryYesterday, after studying the problems of breakthrough storage paths after taking photos, I started to write the storage paths as follows: private string folder = "/sdcard/dcim/camera, different cameras may cause problems in the path. A better way is to use environment
Dcard path problems and how to get sdcard memoryYesterday, after studying the problems of breakthrough storage paths after taking photos, I started to write the storage paths as follows: private string folder = "/sdcard/dcim/camera, different cameras may cause problems in the path. A better way is to use environment to
Test in editor under the Load Assetbundle folder path successfully under Android using WWW has failed to use Assetbundle.loadfromfile canDiscovery: The path used with Assetbundle.loadfromfile is path, then using WWW loading requires the prefix "file://"+
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Android Data Storage
There are several w
Android Resource File Categories:
Android resource files can be broadly divided into two types:The first is stored in the Res directory.resource files that can be compiled:This resource file system will automatically generate the ID of the resource file in R.java, so access to this resource file is relatively simple, through the r.xxx.id can be;The second type is stored under the assets directory.Nati
This article illustrates how Android obtains the SD card path and SDcard memory. Share to everyone for your reference. The specific analysis is as follows:
Yesterday in studying the problem of the storage path breakthrough after the photo shoot, the beginning of the storage path is written to death: private String
file to accommodate multiple resolutions whenever possible.
Iv. Other folders
materials (other files that need to be used in the project can be set up on their own, but this folder will not be packaged into the project, just as other auxiliary files for development convenience,
Android In addition to provide/res directory storage resource files, in the/assets direct
The examples in this article describe the way in which the Android programming read assets All files (traversing each folder) into the SDcard. Share to everyone for your reference, specific as follows:
private void Copyassets (String assetdir, string dir) {string[] files;
try {//Get assets altogether how many files = This.getresources (). Getassets (). List (Assetdir);
catch (IOException E1) {
Answer, http://www.zhihu.com/question/19866689 Pansz, welcome commentUser- aware, bow-length, user-approved The truth is simple: because no one cares. You store files in the AppStore directly on the audit. But Android gives developers too much freedom. Sometimes too much freedom may be worse than no freedom.edited on 2011-09-30 add comment thanksShareCollection • No help · Report • Author retention rights 0 Approval objection, will not show your nam
Not a few words, first glance:Next we start to write an app test:1. New Android Project: Fileselectortest2. Change Mainactivity:In the inside write four TextView analog button, is the file single-choice, file multi-Select, Folder path single-selection, folder path multi-sele
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 android. app. Activity;Import android
1.SRC: Store all the *.java source programs.2.gen: Save path for automatically generated code file for ADT plug-in, R.java will save all resource IDs.3.assets: Can hold the project some large resource files, such as: pictures, music, fonts and so on.4.res: Can store all the resource files in the project, for example: Pictures (*.png, *.jpg), text, etc.5.RES/DRAWABLE-HDPI: Save a high-resolution picture resource, you can use Resources.getdrawable (ID)
inserted data database into the assets directory below.Let's look at the structure of the TEST.DB database I put in:watermark/2/text/ahr0cdovl2jsb2cuy3nkbi5uzxqvdtaxmdgwmduzma==/font/5a6l5l2t/fontsize/400/fill/i0jbqkfcma==/ Dissolve/70/gravity/center ">Can see. We inserted three data in the test.db.Next, we are going to read the database under the Assets folder when the app starts, and then write test.db to the SDcard data/data/com.datab.cn
This is a simple Demo. The purpose is to read a folder to generate a thumbnail and click to display a large image.
Create a new project, create a ThumbnailsWindows class, and inherit LinearLayout. The Code is as follows:
[Java]Import java. io. File;Import java. io. FileInputStream;Import java. io. FileNotFoundException;Import java. io. InputStream;Import java. util. ArrayList;Import java. util. Collections;Import java. util. Iterator;Import java. util
; Imagefloder.setcount (picsize); Mimagefloders.add (Imagefloder); if (Picsize > mpicssize) {mpicssize = picsize; Mimgdir = Parentfile; }} mcursor.close (); Mcursor = null; When the scan is complete, the auxiliary hashset can also release the memory mdirpaths = NULL; Notify handler scan picture complete mhandler.sendemptymessage (0x110); } }This is the core code snippet:1 Determine the exte
In the LAN, the implementation from the Android client to the mobile phone SD card files uploaded to the PC server side, and saved in the PC hard drive under the specified folder. At the same time, the PC-side hard disk file directory and the file description information stored in the MySQL database.1, the client key code:(1) Get the files on the SD card/** * Get file p
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