best way to get music on android

When using the NDK, almost any method requires a jnienv to invoke. This class is thread-dependent, how can you reliably get it?First of all, as the NDK so, there must be a place called by the Android system, this call will bring a jnienv parameter, do not use it, but call:JNIENV->GETJAVAVM (G_JAVAVM);Gets a JAVAVM type variable.Then call when you need to use jnienv. int status; jnienv* _jnienv = NULL;

Architecture (recommended)The homepage is activity, the inside page is view, the bottom column of the head is common, just changes the text and the pattern. The bottom navigation bar is RadioButton, the middle can slide to toggle. Jump quickly, but the home page is not smooth.The benefits of this architecture are clear thinking and low system operating overhead. The downside is poor control, code clutter, and poor lifecycle management.2. Multiple activity-use baseactivity to provide commonality

"] } } Where [umeng_channel_value: "Wandoujia"] is the value corresponding to ${umeng_channel_value}. In fact, the above code is still a bit redundant, we can reduce productFlavors { wandoujia {} baidu {} c360 {} uc {} productFlavors.all { flavor -> flavor.manifestPlaceholders = [UMENG_CHANNEL_VALUE: name] } }1.5.1 Traditional Packaging method We are familiar with the traditional way of pack

) { Macserial = Str.trim ();//Go to space break; } } catch (IOException ex ) { //give default values Ex.printstacktrace (); } return macserial; }Get a physical unique ID on your Android phoneUnique identification code This is useful in Web applications, such as checking for duplicate registrations.Import Android.provider.Settings.Secure; Private String android_id = secure.getstring (GetContext ()

.) ） Very recommended Tutsplus The quality of each article is very high ~ ~ Very recommended Codepath It basically contains all the things that are used in everyday development, just as: We don ' t waste time with the "theoretical approach" you might get from a book. We cover exactly the things we use every day as we're developing apps for contracts. Their purpos

It basically contains all the things that are used in everyday development, just as: We don ' t waste time with the "theoretical approach" you might get from a book. We cover exactly the things we use every day as we're developing apps for contracts. Their purpose is: mission to change the means Engi Neers learn new technologies. We also provide support for questions and answers, and welcome everyone to join us. Coderzhe

difficult for a person who knows nothing about the module. Take it easy and spend more time and energy. The first method first when asked the same module of senior colleagues, ask him to indicate the main package, class, it may take only 5 minutes to give you a little bit, you can spend less than a few days of time! Thank you very much colleague! Then, the General learning Summary, technical documents will contain the code structure, find it, research understanding familiar.Here, we have to int

for us, but Java provides us with a single case to get the way Runtime.getruntime (). The MaxMemory () method gets the maximum memory that the system can allocate for the app, and TotalMemory () Gets the amount of memory heap space currently allocated by the app. I have two mobile phones, a oppo Find7, running the color OS, measured maximum memory allocation of 192MB; a day language v9, running millet syst

explain the HTTP protocol-based networking approach. The walkthrough is built in a simulated login widget, and the login request data is only username and password two simple fields.HttpURLConnection HttpURLConnection is a networking API provided in the JDK, we know that the Android SDK is Java based, so of course we prioritize httpurlconnection the most primitive and basic API, In fact, most of the open-source networking framework is basically a JDK

1. Foreign Tutorial website Android Developers Blog Don't explain Vogella Very good site, free, including Android tutorials are more comprehensive, and the tutorial often quoted Daniel Blog, there will be a lot of unexpected discoveries. Code resources are available, but not very easy to find. Very recommended Tutorialspoint

memory management is to understand and find out the causes of memory leaks, and then based on these anti-rational coding, to prevent and then avoid excessive memory overhead situation. To learn how to manage memory reasonably, it is best to first understand the mechanism and principle of memory allocation. Only deep understanding of the internal principles, can really avoid the occurrence of oom. However, this article does not introduce the mechanism of jvm/davilk memory allocation, if interest

way of memory management is to understand and find out the causes of memory leaks, and then based on these anti-rational coding, to prevent and then avoid excessive memory overhead situation. To learn how to manage memory reasonably, it is best to first understand the mechanism and principle of memory allocation. Only deep understanding of the internal principles, can really avoid the occurrence of oom. However, this article does not introduce the me

This article is an example of Android checking that the phone has a way to install an application. Share to everyone for your reference, specific as follows: Mobile phone users are particularly tired of manual input of a large number of information, in a program can invoke other programs or functions can often give users a better user experience, so that users feel more cordial, so the integration between

Mutual invocation of ios:objective-c and JavaScriptPrior to IOS7, the IOS SDK did not have the native API to provide JS calls to native code. But a delegate method of UIWebView allows us to make sure that JS needs to be called when it notifies native. After the native executes the corresponding call, the execution result can be returned to JS using the Stringbyevaluatingjavascriptfromstring method. In this way, the mutual invocation of JS and native c

The way to explore Android camera-StartCamera in the mobile phone has a pivotal position, whether it is two-dimensional code or photos, recognition, can not be separated from the camera, this article will be the Android camera in a comprehensive analysis.Permission Town Building:uses-permission android:name="android.permission.CAMERA"/>uses-permission android:nam

The way to explore Android camera-StartCamera has a pivotal position in the mobile phone, whether it is a QR code or a photograph or a recognition. Can not be separated from the camera, this article will be a comprehensive analysis of the camera in Android.Permission Town Building:uses-permission android:name="android.permission.CAMERA"/>uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAG

other places also have such code, then still have to modify, is back to our article began to talk about the problem, to solve all the signature verification function, is the purpose of this article.But here we can try to test our blasting results first, by using the xposed framework, hook this application to get the signature Hashcode method, and replace the return value with the correct -2081383250 value:After modification, run:Sure enough, and for

% @", error); [_ tvResult setText: [NSString stringWithFormat: @ "failed to get data from %! \ N % @ ", HTTPS_SERVER_URL, error] ;}];} 3-2-3-2. The successful request interface is as follows: software environment: iOS 9.2.1 + Xcode 7.2.1 4. Now, the client (web browser, Android, and iOS) can initiate Https requests to the server. For details, see the Demo (for compatibility demonstration of Self-Signed C

to obtainDisplaymetrics metric = new Displaymetrics ();This.getwindowmanager (). Getdefaultdisplay (). Getmetrics (Metric);METRIC.DENSITYDPI--------> Gets the density value of the current screenMetric.density-----------> Gets a multiple of the screen conversion, primarily the conversion multiplier of the DP unit to the SP in XMLLOG.I ("Metric", "+metric.densitydpi+" "+metric.density");2.0 is a multiple of the DP conversion to PX, and 320 is the density value of the screenNow let's control the c

();This.getwindowmanager (). Getdefaultdisplay (). Getmetrics (Metric);METRIC.DENSITYDPI--------> Gets the density value of the current screenMetric.density-----------> Gets a multiple of the screen conversion, primarily the conversion multiplier of the DP unit to the SP in XMLLOG.I ("Metric", "+metric.densitydpi+" "+metric.density");2.0 is a multiple of the DP conversion to PX, and 320 is the density value of the screenNow let's control the controls in the XML layout, and in