Mobile Develop

Registers receiver with the system in configuration file Androidmanifest.xml, and child node Intent-filter indicates receiving Android.intent.action.BOOT_COMPLETED messagesandroid:name= "Com.ray.ray.receiver.BootCompletedReceiver">

Delegates and blocks are two mechanisms of implementing callbacks on iOS. Block can basically replace the function of the delegate, and the implementation is relatively concise, it is recommended to use the block of the place do not use the

Booting from AndroidBooting from Android can be divided into two steps:1. Write a broadcastreceiver:Java code Public class Bootreceiver extends Broadcastreceiver { private static final String TAG = "Bootreceiver"; @Override public

Follow me along the steps to make sure you learn.The steps are as follows:First, customize a keyboard layout file:Create a new XML file under the project Res/xml directory, such as Number_only.xml Android:codes= "android:keylabel=" 6 "/>

OTA upgrade, upgrade caused by all the problems are can be explained, some can solve, and some cannot solve.A project reported the problem. After upgrade, you will be prompted to "Android.process.acore" to stop running.Grab adb log and see this

Recently doing Android Web application development, using the knowledge of Android network request, now to introduce the knowledge of network request, we know that Android sends a request to the server, (this is what we usually call the POST request)

Error: Java.lang.IllegalStateException:Already attachedThis address: Http://blog.csdn.net/caroline_wendyPossible causes: @Override protected void oncontinuecreate (Bundle savedinstancestate) { super.oncreate (savedinstancestate); }

setting ImageView to full-screen displayThis address: Http://blog.csdn.net/caroline_wendyImageView adapts to the screen size by default, and if you want to use full-screen fills, you need to use:Android:scaletype= "Fitxy" android:scaletype=

include property usage methodsThis address: Http://blog.csdn.net/caroline_wendy android layout , you can use the include property style so that different layout stitching together. , preceded by cannot add "android:layout". code:

shape round Drawing (oval)This address: Http://blog.csdn.net/caroline_wendy1. Create a folder drawable, for storing the XML type of picture resources ; 2. Create a shape-tagged file in drawable: 3. Use this file in the src of

Step One:#import "AppDelegate.h"Step Two:Where you need to jump: Appdelegate *appdelegate = (appdelegate *) [[uiapplication sharedapplication] delegate]; Uitabbarcontroller *tabviewcontroller = (Uitabbarcontroller *)

PX (pixels): Each px corresponds to a point on the screen.Dip or DP (device independent pixels, unit-independent pixels): An abstract unit based on screen density. On a 160-point-per-inch display, 1dip=1px. However, as the screen density changes,

Use WebView to invoke the JS code on the Web page in 1.android.Android can be implemented by WebView and JS Interaction, in the program to invoke the JS code, only the WebView control of the support JS property set to True, and then through the

Navigation controllers are typically used to display hierarchical content of the down navigation interface, limited by the size of the device screen, the iphone or ipad needs more hierarchical access to display enough content, the navigation

Bitmap Turn drawableBitmap bm=xxx; bitmapdrawable bd=new bitmapdrawable (BM);Because Btimapdrawable is a subclass of drawable, it is finally possible to use the BD object directly.drawable turn Bitmapdrawable d=== Bd.getbitmap ();Finally, BM is the

When using the Viewpager, it is found that the Viewpager in the left and right sliding, unable to cycle, in the Viewpager in the first or last page, cannot slide again, can only reverse slide. But look at a lot of other excellent applications, in

I was following MJ's Sina Weibo project video to make an app of Weibo. However I can ' t access Internet from the Weibo app or Safari. So Google it and got the right solution which are so easy. Guess what, just to restart the

Views have backgrounds, and each window has a background. Each activity is a window, and each activity has a different background. The drawing order of the interface is as follows: Window--with view--child view. When our view has been covered with

When the Android program starts, the first look at the interface is not our designated first activity interface, but instead shows a blank interface with the title bar, but the interface does not have any content, This interface only shows that in

Because the project needs to generate two-dimensional code based on the user's information, QR Code SDK mainstream (ZXing) (Zbar), I chose (Zbar), but in the process of adding such a problem:"_objc_class_$_xx file name", referenced from:Linker