Mobile Develop

　　 for Android developers, it is necessary to learn more about the collection classes of Java, mainly from the collection and map interfaces, which currently provide a collection of the three major categories of list, set and map. Today a simple

Android systemA component is a basic function module that can be called. The Android app is made up of components.Android System structure:Activity : Complete basic function, visual interface = phone screenService: Background services, background

Use of 1.UISegmentedControlSplit controller is the basic use of several switches connected togetherUisegmentedcontrol *SEGMENTEDVC = [[Uisegmentedcontrol alloc] initwithitems:@[@ "spatial dynamics", @ "JIII", @ "DDA"];Sets the background color it

When we are in a certain view of multiple Uiimageview, and Uiimageview are displaying a large HD image, there is a possibility of a memory warning issue. If you enter this view for the first time, there is no memory warning, and when you enter this

the role of each method in the Uitextfielddelegate protocolControls whether the current input box can be edited-(BOOL) textfieldshouldbeginediting: ( Uitextfield *) TextFieldtriggered when the input box starts(Get Focus Trigger)- (void)

Previously wrote a intent blog, mainly about the implicit intent. Portal: "Android-Intent"Intent Object CompositionComponent name, Action, Data, Category, Extras, FlagsComponent nameComponent name is the component name, which is the component name

I. reading a picture 1. Read from resource (Resource)1 uiimage* image=[uiimage imagenamed:@ "1.jpg"2. Read from the network "best use Egoimageview to get network pictures"1 nsurl *url=[nsurl urlwithstring:@

[Brother worked every day, the 68th article]These two days to help the regiment of Yang Total experience his app--"flash chat" of the beta version, after the revision of the app named "Mei Ya", a commitment to create the first domestic focus on

If you want to automatically print mainactivity.oncreate (line:37) This class name in your Android program. How does the log of the method name (number of rows) be implemented?1. The Java-introduced line Cheng Stacks Java.lang package provides a

The desired effect is that the ListView cannot scroll, but the biggest problem with the ListView item is also the Click event, if you do not need to click the event that is simple, directly set listview.setenable (false);If you still need to click

Today we have a global variable appcontext, but the following error has occurred, the original inheritance application in the manifest file declaration.Java.lang.RuntimeException:Unable to start Activity componentinfo{com.langteng.shiliao/

1 process.killprocess and System.exit (0) Two will kill the current process.You can open DDMM to see the process number, and the process is actually killed.2 If the first Activity call process.killprocess or System.exit (0) will kill the current

In the previous android--4.2 Vold Mount Management _volumemanager (iii) in the analysis of Volumemanager is how to extract volume instances and directvolume and volume relationship between the android-- 4.2 Vold Mount Management _netlinkmanager (iv)

This article tells theUITableView、UICollectionViewKnowledge of implementing the Self-sizing cell layout and how to optimize with InvalidationcontextUICollectionViewLayout of the update. BackgroundiOS is becoming more user-friendly, and users can

1.Intent activating a new activityActivating the component, accompanying the dataSet the component to be activated explicit intent1>intent.setclass (this,otheractivity.class)2>Intent.setclassname (This, "PackageName. Otheractivity

Recently, when doing graffiti applet, found a few memory problems.Doodle Demo This program opens after you go to the album to select the picture, then load a uiscrollview, then add a uiimageview on the Uiscrollview, and then set the selection image

Take the initiative.I was the first download "No secret", and then download the "Secret"!No secret is still in my mobile phone, the secret download used 10 minutes uninstall.Let's talk about the use situation!Because of the time to read more network

LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"Xmlns:tools= "Http://schemas.android.com/tools"Android:layout_width= "Match_parent"Android:layout_height= "Match_parent"android:orientation= "Horizontal"> StackViewAndroid:id=

"Reprint" http://blog.csdn.net/totogo2010/article/details/8016129Introduction and use of the Grand Central Dispatch (GCD) for iOS multithreaded programmingCategory: iOS development advanced 2012-09-25 16:22 35382 people read review (+) collection

Online there are a variety of Android simulator, Blue Finger Ah, the MTC of Baidu, etc., but their speed, and the computer's relevance are not VirtualBox installed android-x86 together to come fast.Tools/Materials Computer One Internet