increase volume android code

In the Android project to use the JNI, when the use of Proguard, found that the native method can not find many variables, the original was Produard optimized out. Therefore, it is prudent to use Progurad in JNI applications.Workaround:1. Add a line to the ANDROID.MK:Local_proguard_flags: =-include $ (local_path)/proguard.flags2. Create a Proguard.flag file that writes classes and methods that do not require proguard optimization. For example:-keep cl

Android code dynamically changes View attributes We usually define the length and location of the Android View in Layout XML. When do we need to dynamically set the View attribute in the code? First look at the following uidesign In this uidesign, the above ImageView is designed to be a ratio of 16: 9 in length and wi

1. Hint Java code can use the alt+/key (if you want to send the first letter of the class or method you need), I added: As long as the input sysout, and then alt+/ Key can output System.out.prinln (), previously always thought their speed quickly, never thought this shortcut key is too easy to use. 2.ctrl+m Current Window maximization3. CTRL+F7 View window switch4. Ctrl+f8 mode switch5.ctrl+f6 edit window Toggle (the finger is too big and unsightly)6.

First, prefaceRecently want to explode an app, no shell, simple to use JADX Open View source code, the results amused me, since it is all Chinese, and some of the more wonderful Chinese words:Instantly feel confused, the app is really playing, we know because the Java language is supported by two characters, so you can define the package name, class name, variable name, method name into Chinese, or other countries of the language can be. Therefore, th

1. Get source code 2. Compile 3. Copy the project configuration information to the root directory of the source code: # Cp development/IDE/Eclipse/. classpath. 4. Modify the eclipse startup parameters to increase the memory size because there are many Android sources. If there is no extended internal compilation, it ma

In fact, not only android mobile phone development, but all software development should pay attention to code efficiency issues! In general, the memory should be used as little as possible to implement the same function, and the minimum command is worth the attention of a good developer! We will discuss this issue from two points: (1)Data Type Selection First, we will discuss the selection of basic data typ

As the company's most recent development personnel, as a company responsible for development, must do code controllability, summed up the previous development experience, designed a set of development code specifications, was originally given to the internal use. Now here's the price to share. The company's internal norms are mainly used Checkstyle, FindBugs + Jenkins to do control. After running, only to

Android View event distribution mechanism source code analysis (I) I have always wanted to write an article about the event distribution mechanism. Whatever the case, I have to study the source code of event distribution and write my own experiences ~ First, let's write a simple example to test the event forwarding process of the View ~1. Case studies To better s

[Android Java] design pattern code: Observer Pattern The observer is like a person who is interested in many things, like music, electronic products, games, and stocks. Changes in these things can attract the attention of fans and always pay attention to them. In the code, we also have such a way to design some interesting ideas. Today, I will write a Demo to de

by the acceleration, so here we have the original circular Y speed on the basis of plus acceleration! Some children's shoes here say for the loop can be abbreviated, then I will prompt everyone: for (int i = 0; i The above code can actually be expressed in one sentence: Vertical_speed +=acc*count; or vertical_speed =vertical_speed + acc*count; But note: Because I am here the variables are floating-point numbers, we all know that for

As a result of open source of Android project, the market of n many Android software appeared. In order for us to develop the software to have more users to use, we need to release to the N-market, software upgrades, we also have to go to the Android Market to update, to increase our workload. So it is necessary for us

Presumably the android has been developed using a number of frameworks, but the framework will use some, annotations to help us, save a lot of code development volume. It also makes the code more concise.But annotations are implemented through Java reflection, which of course may sacrifice some performance.The followin

This example describes the implementation of a breakpoint continuation download via the HTTP protocol under the Android platform. We are writing a Andorid HTTP protocol multithreaded breakpoint download application. Using a single thread to download HTTP files is a very simple thing for us to do. So what does a multithreaded breakpoint need? Where is the difficulty? 1. Multi-threaded Download, 2. Support Breakpoints. The benefits of using Multit

development package is not installed, use the command to resolve:sudo apt-get install Uuid-devAfter the installation is finished, you may need to make a soft-link command:Ln-sf/lib/i386-linux-gnu/libuuid.so.1/usr/lib/libuuid.so7.Can ' t locate switch.pm in @INCThe workaround is to install the Perl Switch Library, which installs the command:Apt-get Install Libswitch-perl8./bin/bash:xmllint:command not foundWorkaround Install the Xmllint command as follows:Apt-get Install Libxml2-utils9.make: * *

Next, let me explain how to use gzip for data delivery in the Android system. The gzip encoding on the HTTP protocol is a technique used to improve the performance of Web applications. Large-volume Web sites often use the gzip compression technology to reduce file size, there are two obvious advantages of reducing file size, one is to reduce storage space, the second is the transmission of files over the ne

Android Security-Data security 1-string security in codeIn the development of Android applications, it is unavoidable to use some sensitive information, such as the address of the server, forThese strings, if hard-coded, are easily accessible through static analysis and can even be used with automated analysis toolsBatch extraction. For example, if you define a string in the Java source

); } PS1:It can be seen that this implementation of the gallery sawtooth problem is more serious. You can use the following code in createreflectedimages: Bitmapdrawable BD = new bitmapdrawable (bitmapwithreflection );BD. setantialias (true );Then use IV. setimagedrawable (BD );Replace IV. setimagebitmap (bitmapwithreflection );You can basically eliminate the Sawtooth.PS2:The memoryleak problem to be determined by the imagead

, object object) { //(Viewpager) container). Removeview (mimageviews[position% mimageviews.length]); } Instantiateitem (view container, int position) Increase the exception capture [Java] View plaincopy the code to see how it is derived from my Code slice @Override Public Object Instantiateitem (View container, int position) { try {( Viewpager) containe

Android: Volley source code parsingSimple instance Volley is a network communication framework that encapsulates HttpUrlConnection and HttpClient. It integrates the advantages of AsyncHttpClient and Universal-Image-Loader. It can perform HTTP Communication as easily as AsyncHttpClient, you can also easily load and cache downloaded images like Universal-Image-Loader. Volley has also made significant adjustme

- if(Weekonelist! =NULL weekonelist.size () > 0) {//If there's data this week , $VO =Newlxklineentity (); $ intLen =weekonelist.size (); -Vo.setopen (Weekonelist.get (0). Getopen ());//The opening price of the first day of the stock week -Vo.setclose (Weekonelist.get (len-1). Getclose ());//The last day of the stock week closes the grid the Doublehi = 0;//High Price - DoubleLo = 0;//Lowes