how to transfer messages from android to android via bluetooth

The basic idea of Android beamThe basic idea of Android beam is that two (only two) NFC devices are close (usually back-to-back) and push the data to another NFC device by touching the screen of an NFC device. In the process of passing data, two NFC devices cannot be too far away or the NFC connection will be interrupted. Android Beam APIThe

Ontach Introduction Ontach is the foundation of the entire event mechanism in the Android system. Other events in Android, such as OnClick and Onlongclick, are based on Ontach. The Ontach includes the entire process of pressing from the fingers to the screen of the cell phone, in microscopic form, as Action_down, Action_move and action_up. The two main definitions of Ontach are as follows: 1. In custom

1. windowmanagerservice Frameworks/base/services/Java/COM/Android/Server/windowmanagerservice. Java Dependent on inputmanager minputmanager;Generated during initialization and started with minputmanager. Start () 2. inputmanager Frameworks/base/services/Java/COM/Android/Server/inputmanager. Java A. New inputmanager () ---> Nativeinit (mcallbak) // initializes inputmanager and registers the callback functio

using the default port, you can connect directly to the FTP server using Ftp.connect (URL) Ftp.login (username, password); //Login Reply = Ftp.getreplycode (); if (! Ftpreply.ispositivecompletion (Reply)) { Ftp.disconnect (); return success; } Ftp.changeworkingdirectory (path); Ftp.storefile (filename, input); Input.close (); Ftp.logout (); Otherwise the picture cannot be displayed on the server Success = true; } catch (IOException e) { E.printstacktrace (); }

The reason is that the corresponding include file is not found in the eclipse editing environment. The solution is to add the include directory containing the file as the new linked folder to the project. The specific method is as follows:1. Right-click the project and choose new> folder.2. Click advanced in the dialog box. 3. Select link to alternate location (linked folder) and select the required include directory. 4. Refresh the project after finishing and solve the problem. The include d

We know that in Android, bundle or intent can be used to store and transmit data. Sometimes, because of some program needs, we may need to pass a variety of custom objects. It is not enough to pass only simple types of data. However, these objects cannot be directly transmitted between activities. How can this problem be solved? Method 1: A public class is used as the object transmission intermediary, but the security is poor. The transmission may

passive method. To actively call it, we recommend that you use a thread to call it. After initializing the map, I wrote a thread, the geocode ("detailed address", "Specific City") method of MKSearch is called in the thread, and the loading is successful. However, one problem is that I have to click the screen to refresh the map and start searching on the Internet, that is, to refresh the androidmanifest IN THE AndroidMainfest. xml file. Android: tar

How to pass data between Android two fragment Fragmenta start FRAGMENTB, do some select operation, return to Fragmenta, need to FRAGMENTB inside the selection of the data sent back. What's the solution? Fragment can not communicate directly between the two, must be done through the activity, the specific steps. 1. Define a communication interface in Fragmenta that sends data to the activity through this interface. public class Fragmenta extend

1. Introduce For beginners The data transmission between different activity of Android is always a difficult problem, the main solution is to use bundle to transmit data, one is to use sharedpreferences. The difference between the two, generally speaking, sharedpreferences is used to store lightweight data, stored in XML, and can be persisted. Anti-bundle can transmit a lot of data, but it doesn't last. 2. The concrete realization Method Bundle In