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Because the project requires a download management module, we have been studying the implementation of File Download recently, and have finally finished it through continuous efforts! In File Download management, we need to save the file
Objective
This chapter will implement a very useful feature--download online video. Related to multithreading, thread update UI technology, but also need to think about product design, how the new added function better integration into the existing products, not simply add an interface on the line, welcome everyone to exchange product design and technical details to achieve!
Series
1. Android uses Vitami
Download the site .
More interested readers of Android related content can view the site: "Summary of the use of Android controls," "The Summary of Android view tips," "Android File Operation tips Summary", "
Recently researched multi-threaded download, wrote a demo, finishing down, may be helpful to others.Multi-threaded download generally open two to three threads. If there are too many threads, time can be wasted on the thread switching, which is a waste of time. Too many threads is not a good thing.The principle is to look at my other blog post, in fact, the code is ported to the
Android Studio, it will download the corresponding version of gradle of the project. This process is very slow and sometimes There will be various errors. Therefore, use the local existing gradle directly. The replacement method is simple. You only need to copy the corresponding folder in the locally created project to the project downloaded from github and replace it.
3. Import a project to
AOSP on MAKO (swipe Android 4.4 source bundle on Nexus 4-download/configure/compile/Brush)Special thanks to Google official documents and AOSP Open sourceReference Links:https://source.android.com/source/building-devices.html (official source brush device)Https://developers.google.com/android/nexus/drivers#makokrt16s (Hardware driver package, such as just run the
the following command to restart the ADB service of the target board:
# Stop adbd# Start adbd
Run the following command on the host to establish an ADB connection:
$ Export adbhost = $ ADB kill-Server$ ADB start-Server$ ADB connect
Run the following command to check whether the connection is connected:
$ ADB Devices
If the connection is established, there will be a list of devices:
List of devices attached172.24.191.26: 5555 Device
Start the shell of the target board
$ ADB Shell
ADB Windows P
server to the client. The client can use this field to determine whether the server supports resumable data transfer (note that this part is not required in RFC ). The format is as follows:
Accept-ranges: bytes indicates that transmission in bytes is supported.Accept-ranges: None indicates not supported
Content-ranges: Used for the response from the server to the client. In the same message as accept-ranges, this field specifies the byte range of the returned
intended to install my own new computer system, But I think the other software installed before the installation again, I feel too cumbersome, decisive give up.3, I think of their initial installation of ADT, is to start ADT directly, do not install, that is, they are directly download the compressed package, unzip the folder, put the folder into a place, and then open the bin in the. exe to start the ADT, and then I built a shortcut to the desktop.
If you want to implement a download function, of course, the ideal function must support multi-task simultaneous download and resumable download, I want to step by step, first of all, the difficulty lies in the multi-task here.
My idea is to start the download stream operation in a service, and then declare a handler i
Download and share Android SDK packagesDownload and share the Android SDK package
Need Android Studio official Latest Version Download (828 M): http://blog.csdn.net/yangzhenping/article/details/43203105The Android sdk does not co
Blog "Download Android source code-download a single directory using git clone" describes how to download the source code of a single Android directory using git clone. This article has been around for four years, during this period, Google has made changes to the source cod
last download of the place to downloadwhile (len = Is.read (b))! =-1) {raf.write (b, 0, Len); total + = Len; SYSTEM.OUT.PRINTLN ("thread" + threadId + "downloaded" + total);//Set current progress, is the sum of 3 threads currprogress + = len;pbar.setprogress (currprogress );//update the text by sending a message. The progress bar does not need to refresh the UI by sending a message, because the progress bar itself is a handler.sendemptymessage (1) us
, you will download the Gradle of the project version, which is very slow and sometimes there are various errors. So use the local existing gradle directly.The replacement method is simple, just copy the appropriate folder from the locally created project to the project that you downloaded from GitHub to replace it. Iii. Importing project to Android Studio File-
repo sync to download the source code you need.Error downloading code[HTML]View Plaincopy
error:failed to connect to 2404:6800:4005:c00::52:network are unreachable while accessing https://android.googlesource.c Om/mirror/manifest/info/refs
Fatal:http request failed
Workaround1. Browser login Https://android.googlesource.com/new-password and login with Gmail account;2. Click "Allow access" on the page to get a similar
Machin
When you recently changed your computer and started building an Android development environment, the download SDK always had the following error:
Copy Code code as follows:
Failed to fetch URL http://dl-ssl.google.com/android/repository/addons_list-1.xml.
Said Dl-ssl.google.com was strong in the mainland, the solution is to modify the
Android sdk 8-10 Mbit/S download speed, as shown in the figure below1. Force use of http to replace the https Link
Tools, select Options, and select "Use Download Cache" and "Force https ://... Sources to be fetched using http ://..." And use download cache
2. Disable the xml Link Library for the dl-ssl.google.com
://android.googlesource.com/platform/manifest
Download other branches. For officially released versions, you can download them by running the "-B" command.
[Plain]
View plaincopy
$ Repo init-u https://android.googlesource.com/platform/manifest-B android-4.0.1_r1
During the download process, you need to enter the n
Android is a development source code platform, which means that every one of us can download, modify, and create our own Android platform. We can even help Android community to improve and improve.CodeOf course, these are still a little far away from us. They are still a little far away from me, but you can always look
Light said not practicing non-hero, now let us open their own compiled system test! Actually understand these processes. You know the entire process of customizing the Android phone system. Existing smartphones are using Google's Android Open source system and then adding something of their own. Become the company's system!Taintdroid (Android) virtual machine tes
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