[Android Notes] Android calculates the folder size, deletes all files in the folder, and android notes
1. Get the folder size:
1/** 2 * Get the folder size 3 * @ param file File instanc
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
In short: The problem is that the jar package is repeatedly conflicting!At the beginning of this question I came up with a "self-righteous" answer, in the Android Private Libraries folder is packaged into the project executable, but not self-compiled because the Libs the following jar file is too large, But apparently in the execution of the time, the direct error--class not found!So obviously that's not th
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 an error in the CLASSPATH file, which exists
*res/raw and assets the same point:1. The files in both directories will be stored intact in the APK package after being packaged and will not be compiled into binary systems.The differences between *res/raw and assets:The files in the 1.res/raw are mapped to the R.java file, which is accessed directly using the resource ID, that is, files under the R.id.filename;assets folder are not mapped to R.java, and Assetmanager classes are required when access
If you want to do the title function, you need to open the project directory build_native.sh(Notepad or editing software open)Locate the Create Assets file" $APP _android_root "/assetsThen write the following code:#将工程下的sdk/orderorder.lua copied to assets/script/"$APP _android_root " under the project $APP _android_root "/assets/script/pay#Copy the SDK/client_txt.xml under the project to the project assets/data/xml/"$ App_android_root""$APP _android_root"/assets/data/xml/gameui(The above mention
Differences between the assets folder and res folder in the Android project file
1. assets: Not in R. the corresponding tag is generated in the java file. You can create a folder in the assets folder. You must use the AssetsManager class to access the
* Similarities between res/raw and assets:1. Files in the two directories will be stored in the apk package intact after packaging, and will not be compiled into binary.* Differences between res/raw and assets:1. files in res/raw will be mapped to R. in the java file, the resource ID is R. id. filename; files in the assets folder will not be mapped to R. in java, the AssetManager class is required for access.2. res/raw cannot have a directory structur
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Android Data Storage
There are several w
For drawable, Layout, menu folder each file will be generated in the R.java file drawable, layout, menu Class A constant, the class name is the name of the folder, the constant name is the file name.For the values folder below the file is generated according to the contents of the file to generate the corresponding class constants, this
After the ADT is upgraded, open eclipse and prompt to upgrade Android SDK tools. However, the following error is always reported during the update.
All the tools-related processes are finished or not, and the environment variable is at last found to be an exception.
First, delete the environment variables of D: \ Program Files \ Android-SDK-Windows \ tools. After the update is complete, add them.
Tnnd:
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) {
The example in this article describes how the Android operation SQLite the database under the Assets folder. Share to everyone for your reference. Specifically as follows:
Because this project needs to bring data, so put the data into a SQLite database file, then put the file under the Assets folder. The first plan is to copy the
Android XMl parsing magic xstream 1: parse the aa. xml file in the asset folder of the android project, xstreamandroid
Introduction
XStream is an open-source project and a simple and practical class library used to serialize the conversion between objects and XML objects.
Parses the content of an XML file into an object or serializes an object into an XML file.
Baidu Cloud software users to the detailed analysis to share the Baidu Cloud Android version of the new folder method.
Method Sharing:
Click menu to select a new folder.
Well, the above information is small made up to you Baidu cloud of this software users to bring the detailed Baidu cloud Android ver
one tube, background text messages can be, don't say access to the root directory. iOS does not allow you to create subdirectories in the root directory, the app is isolated, a little bit more than the App Store audit.posted on 2015-04-15 add Comment thanksShareCollection • No help · Report • Author retention rights 0 Approval objection, will not show your nameFlynaj Most android/data space is very small. The memory card is big.and restore the facto
Android will export the jar into the Android dependencies and Android Private libraries two kinds, The goal is for developers to choose, but in general these two must be scored apk! second, the package of the project
This package includes the project's class package, as well as the creation of a variety of tool class packages; the various packages
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