We use it directly in our company projects, and the results are good! Share the script code, hoping to help Android Developers. Note: For python beginners, the development environment is Sublime Text 2, and Ctrl + B is used directly. It has not been debugged in other environments. It should be similar to ^ copy the code ################################## ############### environment: win + python 2.7 # Author: Ma bo # Email: mabo02@baidu.com # Department: hao123-Wireless # Note: The first use of
that data is added out of the memory block allocated to the buffer. From this, we can see that, as an open-source system, code check in Linux is very important. For attackers and administrators, whoever attaches importance to it first takes the initiative to a certain extent.
(1) linux testing software SPIKE
SPIKE is a security testing tool written by Dave Aitel of immunitysec. SPIKE provides a variety of constructor functions. For example, s_binary can be used to construct binary data, s_strin
Google released the 2nd season of Android performance optimization course, a total of 20 short videos, including roughly: Battery optimization, network optimization, how to optimize on wear, using object pooling to improve efficiency, LRU cache,bitmap scaling, caching, reuse, PNG compression, Customize view performance, improve the rendering performance of view after setting alpha, and use tips for tools such as Lint,stictmode and more. Here is a summ
through each dimension to resolve.
Time complexity \ (O (11x10x2x2x4x2\cdot10) \).
Code//"cqoi2016" mobile phone number#include #include #include typedef Long LongLintstructstate{intK,X,F1,F2,F3,F4; Stateint_k,int_x,int_F1,int_F2,int_F3,int_F4) {k=_k,x=_x,f1=_f1,f2=_f2,f3=_f3,f4=_f4;}};Const intlen= One; Lint dp[ A][Ten][2][2][4][2];std::queueintIS48 (intx) {return(x==8) 1| (x==4);} Lint solv
:
Figure 4: Layout tree using RelativeLayout
Now, the rendering time of the layout file is:
Measurement process: 0.977 ms
Layout: 0.167 ms
Rendering process: 2.717 ms
Maybe it is only a small improvement, but this time it will be called multiple times, because ListView will layout all items and accumulate,
After improvement, the effect is quite impressive.
Most of the time difference is due to the use of LinearLayout with the layout_weight attribute, which can speed down the measurement pro
Codeforces Round #262 (Div. 2) questionA. Vasya and Sockstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard output
Vasya hasNPairs of socks. in the morning of each day Vasya has to put on a pair of socks before he goes to school. when he comes home in the evening, Vasya takes off the used socks and throws them away. everyM-Th day (at days with numbersM,? 2M,? 3M,?...) Mom buys a pair of socks to Vasya. she does it late in the evening, so that Vasya can
tools: . At the same time, even when running tools: itself is ignored, will not be brought into the APK.
Types of tools attributes
The tools attribute can be divided into two types: one that affects lint hints and one that is designed for XML layouts. This is the most basic usage of tools: The second is to overwrite the standard Android properties when UI is designed. The following describes lint related
Remove unused resources from the Android project
The project needs to change again, the UI a tune again, the result is a project in a heap has not used but did not clean up the garbage resources, not to mention the size of the project, for the new entrants to the project or to see the code of other modules, these resources may also be not clean up the resource can be troubled, so it is best to clean up the rubbish, For a slightly larger project, manual cleanup is obviously unrealistic, which re
create a mirror and install some necessary tools for integrating and deploying related operations. Currently our projects are based on Golang 1.9.2, where a specific image is mapped based on the golang:1.9.2 image.
Dockerfile content is as follows:
# Base image: https://hub.docker.com/_/golang/
FROM golang:1.9.2
USER root
# Install golint
ENV GOPATH /go
ENV PATH ${GOPATH}/bin:$PATH
RUN mkdir -p /go/src/golang.org/x
RUN mkdir -p /go/src/github.com/golang
COPY source/golang.or
to%GOPATH%\src\github.com\golang\Finally, the relevant reference articles are as follows:Let you successfully install the relevant plugins for go in VscodeGit error Collection
Execute Clone command
git clone https://github.com/golang/tools.git tools
Copy tools directory to%GOPATH%\src\golang.org\x\
# git bash 中的操作,需提前建立目录cp -r tools/ ../../golang.org/x/
Copy %GOPATH%\src\github.com\golang\ the lint folder under the %GOP
="Za.co.helloworld.LoginActivity" android:label= "@string/app_name" > span class= "tag" > android:name= "Android.intent.action.MAIN" /> android:name= /> When we create and run our own applications in the simulator, we should first see the display as shown. This means that we have successfully replaced the original blank activity class with the Loginactivity class that we just created.5.Lint ToolsTesting the code is one thing, but ju
://schemas.android.com/tools"
Tools can tell Android Studio which properties are ignored at run time and are only valid when designing the layout. For example, we want to make the Android:text property available only in the layout preview.
1234567
NBSP; android:id= "@+id/text_main " NBSP; android:layout_width= "match_parent" NBSP; android:layout_height= "wrap_content" NBSP; android:textappearance= "@style/textappearance.title" NBSP; android:layout
are only valid when designing the layout. For example, we want to make the Android:text property available only in the layout preview.android:id= "@+id/text_main" android:layout_width= "Match_parent " android:layout_height=" Wrap_content " android:textappearance=" @style/ Textappearance.title " android:layout_margin=" @dimen/main_margin " tools:text = "I am a title"/>Tools can override all of Android's standard properties, and Android: Switch to Tools: Yes. While running, even tools: itse
Explore the Android studio content in this article
Project structure
Interface
Gradle Build System
Debugging and analysis tools
Android Studio is the official Android app development integrated development Environment (IDE) based on IntelliJ idea. In addition to IntelliJ's powerful code editor and developer tools, Android Studio offers more features that improve the efficiency of Android app building, such as:
A flexible building system based on Gradle
Fast
The project needs to change again, the UI a tune again, the result is a bunch of items in the project has not been used but not clean up the garbage resources, not to mention the project size problem, for the new entry of the person or look at the code of other modules, these clean resources may also be troubled, so it is best to clean up the rubbish, For a slightly larger project, manual cleanup is obviously unrealistic, which requires a way to do these things.Clean Up resource filesTo clean up
Transferred from: http://blog.csdn.NET/wbshuang09/article/details/44920549In Android code, we sometimes use a higher method than the Android:minsdkversion version we set in Androidmanifest, when the compiler prompts for a warning, and the workaround is to add @suppresslint to the method (" Newapi ") or @targetapi ().What's the difference between them, very simple,@SuppressLint ("Newapi") block all new APIs in order to use the method reported by Android Lint
://schemas.android.com/tools"
Tools can tell Android Studio which properties are ignored at run time and are only valid when designing the layout. For example, we want to make the Android:text property available only in the layout preview.
1234567
NBSP; android:id= "@+id/text_main " NBSP; android:layout_width= "match_parent" NBSP; android:layout_height= "wrap_content" NBSP; android:textappearance= "@style/textappearance.title" NBSP; android:layout
problem.
Use lint
We can use the lint tool on the layout file to find possible hierarchical optimization points of the view. Lint has replaced the layoutopt tool and has many better features. some lint rules:
Use composite canvas-using composite canvas in a linearlayout containing imgeview and textview is more effic
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