Android

Shape and selector are frequently used in Android UI design. For example, if we want to customize a rounded corner Button and click the Button to change some effects, we need to use shape and selector. It can be said that shape and selector play a

SYNTAX (SYNTAX ): Android: pathPattern = "string"Android: pathPrefix = "string"/> Included IN (contained in) DESCRIPTION ): This element is used to authorize the data subset of the content provider. A Data subset is identified by the content: URI

Go directly to the code and explain the comments. An example of a rocket launch countdown Main. xml [Html] Android: layout_width = "fill_parent"Android: layout_height = "fill_parent"Android: orientation = "vertical"> Android: id = "@ +

The following code is provided: [Html] Android: layout_width = "fill_parent"Android: layout_height = "fill_parent"Android: orientation = "vertical"> Android: layout_width = "fill_parent"Android: layout_height = "fill_parent"> Android: layout_width =

Usually, coordination is required between multiple threads. For example, if displayThread of a browser that displays an image wants to execute the task of displaying the image, it must wait for the download thread downloadThread to download the

Android is a little more annoying than Iphone: the screen size is too large!The following describes how to obtain screen-related information in Android.1. screen size, source code:DisplayMetrics metrics = new DisplayMetrics ();GetWindowManager ().

The HttpURLConnection and HttpClient interfaces provided in Android can be used to develop HTTP programs. The following is my summary and induction.1. HttpURLConnection InterfaceFirst, it must be clear that the POST and GET requests in Http

For Android, the transmission of complex types is mainly to convert their classes into basic byte arrays, and data passing between activities is implemented through Intent. Android serialization objects can be implemented in two ways: Serializable

Think: How to exit the program safely?  Finish is the Activity class. It only applies to the Activity. When finish () is called, the Activity is pushed to the background, and the memory is not released immediately. The Activity resources are not

A problem occurs when you use Gallery to display images. That is, the sliding speed is too fast. A few images are swiped each time. How can this problem be solved?1. Directly inherit Grallery, override the onFling method, and return the value false.[

Previous: http://www.bkjia.com/kf/201206/134435.html Public void onInflate (Activity activity, AttributeSet attrs, Bundle savedInstanceState) This method is called when a Fragment object is filled as part of a View object layout and is usually used

Public void onStart () This method is called when the Fragment object is visible to the user. This method is usually bound to the Activity. onStart () method of its Activity lifecycle. Public void onStop () When the Fragment object is terminated,

We already know that is used to define how your Activity is enabled by another Activity. This is the so-called "filter ". However, if two activities have the same , what will happen?The code in AndroidManifest. xml. Package = "net. horsttnann.

Problem:A ca Library link fails to be debugged yesterday: ca vendors generally provide static ca libraries so that you can directlyYour Library link can be used together, but since apk compiler in ndk: android-ndk-r6b \

If the project introduces the jar class library for the android-support-v4, an error message appears when the project is packaged for obfuscation. For example, You may need to specify additional library jars (using '-libraryjars '). The solution is

Android provides a class for converting Chinese characters to pinyin. However, this class is under the contact app. The specific directory is the HanziToPinyin. java file of packages/providers/ContactsProvider/src/com/android/providers/contacts. If

To make an Activity run in full screen mode, you can add the following code in its onCreate () method:   // Set full screen modeGetWindow (). setFlags (WindowManager. LayoutParams. FLAG_FULLSCREEN,WindowManager. LayoutParams. FLAG_FULLSCREEN );//

Today, I investigated an online Bug and found that it was a small piece of javascript in WebView. It directly calls a Java event of the background APK and finally leads to nullpointexception in java.I am interested in how javascript in WebView calls

Contacts in the Android system also provide external data through ContentProvider. Here we can obtain all contacts, obtain contacts through phone numbers, add contacts, and use transactions to add Contacts.Get all contacts1. Contacts in the Android

I. DOM parsing XML files[Java]Public static void main (String [] args ){File file = new File ("d: \ WordChronos. xml ");DocumentBuilderFactory dbf = DocumentBuilderFactory. newInstance ();DocumentBuilder docbuder;Try {Docbuder = dbf.