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Original link: http://blog.votzone.com/2018/05/05/android_signature.html Android signatures are available in two ways, one using the Jarsigner tool signature provided by the JDK KeyStoreFile, and the other is Android itself provides Signapk.jar through. PK8 (key) and. X509.PEM (certificate) two signature files to complete the signature. Before the signature of a package is directly using signapk, because do
purpose of serialization for # # #:-Persistence of custom objects in some form of storage;-Transfer objects from one place to another.-Make the program more maintainable.How to serializeTwo ways are described below:
Implement the Serializable interface (which is supported by the javase itself)-This kind of serialization is very simple, only need to implement a serializable interface can be implemented, specific reference code: Person Class
Android terminal and server data transfer solutionsAndroid Terminal three types and server transmission mode:
Socket Transmission
WebService Transmission
Post/get how to get Data
Network implementation conditions
Port: SpecifyProtocol: TCP,UDP
Port: SpecifyProtocol: SOAP
Port: SpecifyProtocol: HTTP
Scope of Use
Large data volume,
Transfer it to students who are confused about learning android.Many friends are confused about the learning route, especially those who are still attending school. Here we will introduce you in detail.
1. Java Basics
Many of my friends started learning android as soon as they got started. It seemed so anxious. Android applicationsProgramDevelopment is based
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/595c5b23b344a.jpg "style=" padding:0px; list-style:none;vertical-align:middle;height:auto;border:0px; "/>PS: Seven licensees with copyright in the Company1. CCTV International--CNTV (CCTV as the main application)2. Hangzhou number of Chinese (Zhejiang, Hangzhou TV Joint application)3. Shanghai SMG--Hundred Vision Tong (Shanghai TV station is the main application)4. Southern Media (Guangdong TV station is the main applicant)5. Hunan TV station6. China Radio International7. Central People's Radio
In the Android development process, it is very common to pass data between different acitivity. I spent a little time summarizing the data transfer between acitivity and documenting it.1. Simple transfer of key value pairsThis method of delivery is very simple, just need to add the corresponding key-value pair in the construction intent.In Activitya, the code for
In Android , data transfer betweenActivity is somewhat complex, such as through Intent and bundles and so on, it must be implemented when passing complex objects. Serializable interface classes, which in many cases make it inconvenient to handle data passing between pages. In Javaweb , thesession object to pass data is very practical and convenient, in this, in Android
In Android development, the activity between intent using bundle,fragment between and activityty through the setarguments using bundles, for some simple parameter transfer is relatively simple, and there are many ways, This is not introduced. Here is a description of complex parameter passing, such as passing set ArrayList, Object arraylistThe bundle is basically the same, whether it is the parameter passin
please look for this genuine code, after-sales technology is guaranteed, the code has been continuously updated. (piracy is shameful, offenders must investigate) This is the company's team development --------------------------------------------------------------------------------------------------------------- ----------1. There are 4 sets of Oracle, MSYQL, spring3.0, spring4.0 all available without hitting the jar without encrypting the source code ( the bottom 2.1) 2. Support App mobile app
method in native to handle business logic in Android, and it's not recommended to handle Android business logic in this way, but also know how to use it). Privatewebviewmwebview;publicstaticfinalstringurl_test= "File:///android_ Asset/index.html "; @SuppressLint (" Javascriptinterface ") @Overrideprotected voidoncreate (bundle savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (R.layo
(HttpPost);
if (Response.getstatusline (). Getstatuscode ()! = 404) {
result = Entityutils.tobytearray (response.getentity ());
}
} catch (Exception e) {
LOG.E ("Httputils", "Connection server error");
E.printstacktrace ();
}
At this point, the binary data is requested to the network and responds to the binary data stream(5) The remaining steps will be obtained by using the Msgpack-unpack method to obtain the binary data you want to obtain the corresponding data:[Java]View P
Passing data between ActivtyPrior to learning how to start an activity, in some cases not only need to start another activity, but also to get the results returned. And sometimes more often when you start another activity with some values.1. Define a intent and specify the activity that will be started for the intent2. Call Startactivityforresult (Intent intent,int Requestcode) to jump and Mark Requestcode3. Rewrite onactivityresult (int requestcode,int resultcode,intent data) to parse the retur
Bus Transfer Route Search and transitoverlay
Here, only Java code is provided. For XML code, refer to: learning notes for Android and learning Baidu Map
Important code:
Mkplannode start = new mkplannode (); // start point: Tiananmen start.pt = new geopoint (INT) (40.003834809598516*1e6), (INT) (116.3263213634491*1e6 )); // set the central mapcontroller of the map. setcenter (start.pt); mkplannode end = new
Android Touch event transfer mechanism: androidtouch
Respect Original: http://blog.csdn.net/yuanzeyao/article/details/38025165
Resource download: http://download.csdn.net/detail/yuanzeyao2008/7660997
In the previous article, I mainly explained the Touch event transfer process in the Android source code. Now I want to
Value Transfer in Android
As we all know, according to the mvc design pattern, data is transmitted through the model, from one activity (A) to another activity (B) if you want to pass the value, we can put the model in the intent (or not), and then get the corresponding value after B is created; otherwise, if the value is returned to A from B, it is also feasible, except to receive the corresponding value
Cases triggered by the Android Touch event Transfer Mechanism
I have also written two articles about the Android Touch event transfer mechanism. I think the Touche event is still well understood, but I have encountered a problem recently, let me learn about the Android Touc
Data transfer between Acticity in AndroidDuring Android development, it is very common to transmit data between different acitifiers. I spent a little time summarizing and recording the data transfer between Acitivity. 1. simple transfer of key-value pairs this transfer meth
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