nfc adapter android

We all know that the function of Adapter in Android is the bridge between the ListView interface and data. When each item in the list is displayed on the page, the getView method of the Adapter is called to return a View. Ever wondered? What will happen when there are 1000000 items in our list? Does it occupy a lot of system resources? Take a look at the followin

ListView Settings Adapter, loading Item viewMethod:Lvlist.setadapter (New Menuadapter ());The Menuadapter class is specifically implemented as follows:1 classMenuadapterextendsBaseadapter {2 3 @Overrride4 Public intGetCount () {5 reutrn mmenulist.size ();6 }7 8 @Override9 PublicNewsmenudata GetItem (intposition) {Ten returnMmenulist.get (position); One } A - @Override - Public LongGetitemid (intposition) { the

/** * Adapter for grid of coupons. */private static class Couponadapter extends Baseadapter {private Layoutinflater minflater; Private list　　Android Adapter Code Slice

directory inside to find, if found to use.3, if not found, continue to look up. And so on4, if the XXHDPI directory has not been found, it will go to the lower level than its own screen density of the directory to find, if the low level of the directory >=hdpi, found the use.5, if not found, go to mdpi directory to find, if found, take it.6, if not found, go to the default drawble directory to find, if found, take it.7, if not found, then go to the lowest ldpi directory to find. If you find it,

Solution SolutionsWritten values-port-hdpi-1824x1200Problems found in recent projectsI write resolution VALUES-1920X1200, but flatbed Huawei X1 not go this resolution, write 1800x1000 will go in, but still wrong ah, this will affect the adaptation of other devicesLater found that you have to remove the virtual key portion of the resolution of my printing screen is//------1824 Huawei Glory X1 7.0Finally, I put the adaptation of value inside the values-port-hdpi-1824x1200, which can be adapted. In

/. Android-how-to-adjust-layout-in-full-screen-mode-when-softkeyboard-is-visibleThe solution with the highest scoreIt can be solved perfectly on Samsung, but the bottom menu bar and keyboard on the 5.0 system and Meizu phone have a height of about 50px, not perfect fit ... NimaContinue Google to find this http://stackoverflow.com/questions/21092888/ Windowsoftinputmode-adjustresize-not-working-with-translucent-action-navbar customizes a layout to inhe

navBarOverride = (String) m.invoke(systemPropertiesClass, "qemu.hw.mainkeys"); if ("1".equals(navBarOverride)) { hasNavigationBar = false; } else if ("0".equals(navBarOverride)) { hasNavigationBar = true; } } catch (Exception e) { } return hasNavigationBar;}}Invocation method: Called after the Setcontentview () method in the extracted activity base class //适配华为部分机型虚拟键 if (NavigationBarUtil.getInstance().hasNavigationBar(this)) { N

Screen Size:屏幕对角线的长度单位英寸，1英寸=2.54厘米Resolution在横纵线上的像素点数单位是px，1px=1个像素点一般以纵向像素*横向像素，如1920*1080Screen pixel density指每英寸上的像素点数(屏幕对角线上)单位dpi，与屏幕尺寸和屏幕像素有关1920*1080 dpi=445计算方式：sqrt{1920^2+1080^2}/尺寸(4.95对角线)Px,dp,dip,spdp dip是密度无关像素以160dpi为基准，1dip=1px在320*480的机子上：160dpi 1dp=1px在800*480的机子上：240dpi 1dp=1.5pxsp 12,14,18,22 设置字体大小的时候不要设置奇数或小数，因为有可能会造成精度的丢失。mdpi,hdpi,xdpi,xxdpi存放相同图片的不同像素状态， 系统会更具设备的具体像素来选择不同的图片。同理不同像素下values中定义dimen的不同值。m 120~160(dpi)h 160~240xh 240~320xxh 320~480xxxh 480~6

Controls related to Adapter in android ---- ViewFlipper and adapterviewflipper ViewFlipper (flip view) 1. ViewFlipper is a multi-Page Management Control. Unlike ViewPager, ViewPager has one page and one page, while ViewFlipper has one layer. Image carousel or when the App's boot page is used 2. Add View to ViewFlipper (1) Method 1: static Import (2) Method 2: dynamic import Iii. Common Methods SetI

@Override2 protected voidOnactivityresult (intRequestcode,intResultCode, Intent data) {3 if(ResultCode = = 10) {4Et_phone.settext (Data.getstringextra ("Phone"));5}Else if(ResultCode = = 20) {6Et_content.settext (Data.getstringextra ("content"));7 }8}Iv. Sending SMS1 Public voidbtnsendmsg (View v) {2String content =Et_content.gettext (). toString (). Trim ();3String phone =Et_phone.gettext (). toString (). Trim ();4 5Smsmanager sender =Smsmanager.getdefault ();6Arraylistsender.divideme

Solution SolutionsWritten values-port-hdpi-1824x1200Problems found in recent projectsI write resolution VALUES-1920X1200, but flatbed Huawei X1 not go this resolution, write 1800x1000 will go in, but still wrong ah, this will affect the adaptation of other devicesLater found that you have to remove the virtual key portion of the resolution of my printing screen is//------1824 Huawei Glory X1 7.0Finally, I put the adaptation of value inside the values-port-hdpi-1824x1200 , which can be adapted.In

= Layoutinflater.from (context). Inflate (R.layout.item,NULL);4Button Button =Abviewutil.obtainview (Convertview, r.id.item_btn);5Button.setonclicklistener (NewOnconvertviewclicklistener (Convertview, r.id.ab__id_adapter_item_position) {6 @Override7 Public voidOnclickcallback (View Registedview,int... positionids) {8Toast.maketext (Context, "position:" + positionids[0], Toast.length_short). Show ();9 }Ten }); One } A Convertview.settag (r.id.ab__id_a

Http://www.cnblogs.com/xiaoQLu/archive/2011/05/10/2042124.html It takes me a lot of time to update the progress bar dynamically when uploading images over the past few days. First, Android is not very familiar with it, second, it is my own Java basics, or the programming basics are not solid, I will not apply these two tools. These two tools will be the focus of further improvement! Not much talk! Let's talk about some of the knowledge I have used: a