Android menu items

As you are familiar with, Android supports most traditional menu options, including icon, shortcut, checkbox, and radio button, as described below: checkboxes and Radio buttonscheckboxes and radio buttons are visible in the extended menu and

Textview attribute Android: ellipsize achieves the flashlight Effect

In the Android system, textview must meet the following conditions to achieve the running horse effect: 1. Android: ellipsize = "marquee" 2. textview must be displayed on a single line, that is, the content must be larger than the textview size. 3.

Android: how to display network images

Displaying a network image in Android is actually super simple. The following is a very simple example: Step 1: 1. Create your activity. In this example, viewwebimageactivity is described. 2. In viewwebimageactivity Code String imageurl =

MD5 encryption in Android

There are a lot of materials on the Internet about MD5 encryption in Android, but the test is always different from the MD5 encryption in the website. Later I learned that the encoding method is incorrect, so I wrote one myself. Private Static final

Android uses imageview to display local and online images

Imageview is android Program A commonly used component that displays an image on the screen. Define an imageview in Ui XML as follows: public void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); setcontentview (R. layout.

Android uses global variables

Now I am busy every day. When I get busy, I put my notes in the back. Recently I am writing Program When the global variables were suddenly used, a class was written according to the previous method, and all the variables were declared as static

When Android calls the system text message intent, it will pre-fill the receiving number and content

Some time ago, the world called the intent of the SMS that comes with the system in an application, but the recipient's number never passed, CodeUri smstouri = Uri. parse ("smsto: 123456"); intent sendintent = new intent (intent. action_view,

Download Android files

Public void downfile (string URL, string path, string filename) throws ioexception {If (filename = NULL | filename = "") This. filename = URL. substring (URL. lastindexof ("/") + 1); elsethis. filename = filename; // get the file name. If you enter

Android parses XML strings

Package. test; import Java. io. bytearrayinputstream; import Java. io. ioexception; import Java. io. inputstream; import Java. io. stringreader; import javax. XML. parsers. saxparser; import javax. XML. parsers. saxparserfactory; import Org. XML.

Different questions about httpclient and webview sessions of Android

When developing a project, we encountered such a problem. The logon interface was implemented using the android native UI. After successful login, we will jump to the webview to load sencha touch data, however, when loading data from the webview to

Use of the include tag in Android

In a project, we may need to use the same layout design. If they are all written in an XML file, Code The layout code can be reused by using the label when the code of the same layout is redundant and the readability is poor. App_title.xml:

Use of the trafficstats class in Android traffic statistics

For Android traffic statistics, you can easily obtain the trafficstats class added to Version 2.2. In fact, the trafficstats class also reads the text of the file object system type provided by Linux for parsing. In the trafficstats

Android animation effects: translate, scale, Alpha, and rotate

2011.10.28 Note: If you need to stop the widget at the position after the animation, you need to set the Android: fillafter attribute to true on the set node. By default, after the animation ends, the system returns to the position before the

Android Remote Image Retrieval and local cache

Overview for client-server applications, obtaining images remotely is a commonly used function, and image resources often consume a large amount of traffic. For applications, if the problem cannot be solved, the user will crash and the mobile phone

Android monitors incoming and outgoing calls

To listen to Android calls and answer calls, you only need to write a receiver inherited from broadcastreceiverimport android in step 2. app. service; import android. content. broadcastreceiver; import android. content. context; import android.

Android API: SMS service and Contacts

Android API supports the development of applications that can send and receive SMS messages. Program . Currently, the android simulator we use in the development process does not support sending SMS, but it can receive SMS. Now let's explore

How Android browses and selects images, audio, and videos

In the past few days, I have been studying and developing images for Android to browse audio and video. This is the first Android system (Java won't) having encountered many problems, it took me several days to browse and select images, audios, and

How does Android prevent the APK program from being decompiled?

As an Android app developer, you have to face an embarrassing situation: applications that have worked hard to develop can be decompiled easily by others. Google also seems to have discovered this problem. From sdk2.3, we can see that the proguard

Android include labels

In Android, The include tag is a good solution to facilitate control overwriting. However, there are also some points to note. Below is a problem I encountered in the project. Make this record for later viewing. Include label usage. 1. Create an XML

Android Custom Controls

Today I will share with you the usage of the combined controls. In many cases, android custom controls cannot meet requirements. How can this problem be solved? Many methods can be drawn by yourself. Some links can be rewritten by inheriting the

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