how to transfer contacts from android to android

"Android:layout_height= "Wrap_content"Android:text= "Submit" />LinearLayout>View CodeSecondactivity.java PackageCn.lixyz.activitymanager;Importandroid.app.Activity;ImportAndroid.os.Bundle;/*** Created by LGB on 2015/8/27.*/ Public classSecondactivityextendsActivity {@Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate); Setcontentview (R.layout.activity_second); }}View CodeActivity_second.xmlXML version= "1.0" encoding= "Utf-8"?>LinearLayoutx

, usbserialport.parity_none);7 8 byteBuffer[] =New byte[16];9 intNumbytesread = port.read (buffer, 1000);TenLOG.D (TAG, "Read" + Numbytesread + "bytes.")); One}Catch(IOException e) { A //Deal with error. -}finally { - port.close (); the}Of course, we can add a monitor to the serial port.11Private FinalExecutorservice Mexecutor =executors.newsinglethreadexecutor ();22PrivateSerialinputoutputmanager Mserialiomanager;3344Private FinalSerialinputoutputmanager.listener Mlistener =55NewSerialinp

In Android, there are 2 ways to transfer objects, namely, Bundle.putserializable (Key,object) and bundle.putparcelable (key, object) intent. Of course, these object is a certain condition, the former is the implementation of the serializable interface, and the latter is the implementation of the Parcelable interface, the following is an example I do for youFirst we set up a project named: ObjecttestdemoThen

This article is on the basis of the previous blog post on the Android XMPP-based Instant Messaging 1-basic conversation, adding new features to File transfer1. Initialization of file Transfer management class Public StaticFiletransfermanager Getfiletransfermanager () {if(FileManager = =NULL) {Servicediscoverymanager Sdmanager=Servicediscoverymanager. Getinstancefor (connection); if(Sdmanager = =NULL) {Sdman

The current Android Access interface transmits data more in JSON format (simple and easy to parse across platforms), in order to save bandwidth and transfer time the server will often be gzip compressed before transmission, here are a few points to note. 1. For PHP server, the interface must be in the header with parameters Accept-encoding:gzip, deflate, or even if the background does gzip compression, wil

;ImportAndroid.widget.TextView; Public classExitextendsActivityImplementsonclicklistener{Button exitbtn; Button returnbtn; TextView Name; @Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate); Setcontentview (R.layout.activity_exit); EXITBTN=(Button) Findviewbyid (R.ID.EXITBTN); RETURNBTN=(Button) Findviewbyid (R.ID.RETURNBTN); Name=(TextView) Findviewbyid (r.id.name); String name=getintent (). Getextras (). getString ("name"); Name

Android development, often in the Java code and the JNI layer passed between the array (byte[]), a typical application is the Java layer to send the data sent to the client stream to the JNI layer, by the JNI layer socket code sent out, of course, The JNI layer also needs to return the data stream received from the socket to the Java layer. I summarized briefly, from the Java layer to the JNI layer, from the JNI layer to the Java layer, there are 3 ki

In the development of Android UI, we often encounter this requirement:Two components that support sliding, such as the ListView nested multiple Listview,listview item is a Viewpager or gallary? or ScrollView nested ScrollView and so on.In general, you may also need to support several features such as:¤ Two-layer components can slide¤ Do not let two components slide at the same time, or let two components sliding simultaneously and can adjust themselve

; @Overrideprotected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (r.layout.activity_regist); Initviews ();} private void Initviews () {et_uname = (EditText) Findviewbyid (r.id.et_uname); et_upass = (EditText) Findviewbyid (r.id.et_ UPass);} public void regist (view view) {String uname = Et_uname.gettext (). toString (). Trim (); String UPass = Et_upass.gettext (). toString (). Trim (); if (Textutils.isempty (uname) | | Textutils.isempty (UPass))

For example, interface a passes value to interface b1. Interface a considerations:(1) Intent put different types of parameters with the same name parameter the last one will overwrite the previous parameter (one parameter name can only correspond to one parameter value, and multiple parameters will be overwritten by the last parameter)2. Interface B Considerations:(2) Intent get different types of parameters, only if interface a put the parameters of the type, B interface to get to the value, ot

The first is the call service for the system clipboard:Clipboardmanager Clipboardmanager=getsystemservice (Context.clipboard_service);Then it is written, taken out.It is important to note that before Android version 11, the use of the Clipboard to pass data using the SetText and GetText methods, but after version 11, the two GetText and set methods are discarded, instead of the need to use the Clipdata object to pass the data. Compared with the GetTex

Now assume that there are two classes Aclass.class and Bactivity.class, passing the value in a to the B call1, the code in Aclass.class is as followspublic class AClass implements { //Get interface Object private Onaclasslistener Aclasslistener; //Construction Method Private AClass () { } //Send data public void sends () {if (aclasslistener!= null) { aclasslistener.onaclass ("Pass the value Here"); } } For B-bound interface public void Setonaclass (Onac

closed. Test results:java : Java new 5000s waste 3ms c++ : c++ new 5000s Waste 18ms java : java new 10000s Waste 5ms c++ : c++ new 10000s waste 24ms Span class= "http" >java : java new 50000s waste 44ms c++ : c++ new 50000s waste 121ms java : java new 100000s waste 65ms c++ : c++ new 100000s waste 259ms This time, the results show that if the cache method ID and Jclass can be shortened by half the time. But still less fast than Java. It's also good to understand that C + + creat

Set values by Putextra, get values by GetextraPutextra need to set the key-value pair, Getextra by the corresponding key to get the passed value (directly between the Getextra plus the value type you want to get)1. Open another activity in one activity through Startactivityforresult ()2. This method usually receives two parameters, the first one is the intent object, the second is the Requestcode3. In the first activity, rewrite the Onactivityresult method, by switch to determine the transmitted

Activity jumps and passes values. Mainly through the intent class. The role of intent is to activate the component and the accompanying data.First, activity jumpsMethod OneIntent Intent = new Intent (a.this, B.class);StartActivity (Intent)Method TwoIntent Intent = new Intent ();Intent.setclass (A.this, B.class);StartActivity (Intent);Implementation from a jump to B (A, B are inherited from activity)II. Transmission of dataActivity A transmits dataMethod OneIntent Intent = new Intent ();Intent.se

I. Public Intent PutExtra (String name, double[] value)Set Method Intent.putextra ("AAA", "bbbb");Get Method This.getintent (). Getcharsequenceextra ("AAA")Ii. public Intent Putextras (Bundle extras)Setup MethodBUNDLE BD = new bundle ();bd.putstring ("AAA", "bbbb");Intent.putextras (BD);Get MethodBundle bd=this.getintent (). Getextras ();bd.getstring ("AAA")); Iii. SummaryThe band S has to bind the data through a bundle. ---Putextra and Putextras of Android