hot android apps

Why do Android apps use MulticastSocket to listen for multicast? Why do they connect to different routes and run on different mobile phones? Some of them cannot receive multicast messages. ---------------------------!! Reprinted please indicate the source !! ----------------------- A project that uses Wi-Fi multicast to discover devices in the LAN. However, it is found that some routers can work normally, a

In Android app development, there are occasional exceptions that cause the app being used to be abnormal and forced to shut down, which leads to an unfriendly user experience. To solve this problem, we need to catch the exception and do the processing. There are two kinds of exceptions in Java, namely error and RuntimeException, the former do not need us to deal with, we often deal with the latter. So how do you catch the exception of threads at run t

1, about IconfontIconfont is both icon and font, in particular, it should be displayed in the form of a font icon. Unlike icons in traditional picture formats, this kind of icon is easy to change in size, color, and background color because it is displayed in font form.2. How to use 2.1 Download resourcesResource Source: http://www.androidicons.com/ Follow the guide to find the download link. Download the decompression to find Iconfont/font, the inside of the four files copied to the

Mainactivity:packagecom.testnbackpressed;import android.os.Bundle;import android.view.KeyEvent;import android.app.Activity;/*** Demo描述:* 处理Back键按下事件** 注意事项:* 以下两种方法勿一起使用*/public class MainActivityextends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);}/*** 监听Back键按下事件,方法1:* 注意:* super.onBackPressed()会自动调用finish()方法,关闭* 当前Activity.* 若要屏蔽Back键盘,注释该行代码即可*/@Overridepublic void onBackPressed() {super.onBackPresse

most are translated by Google's official documents. Because of the time problem, coupled with their own English is bad enough, the recent slow. However, such a down, plus some of their own code exercises, for the material design can be basically used. Unfortunately, most of the style is not backward compatible, had to wait 5. There are some big God in the Internet has been open source some open source components, we can take this curve to salvation, the next time in a special collation. This ar

Android applications consist of loosely coupled components and are bound together using application manifest, and the application manifest describes how each component interacts with each other, and is used to develop application metadata, its hardware and platform requirements, External libraries and the required permissions. The following components provide the basic mechanism module for the application: activity: The presentation layer of the

. You can crop the outline of a view using a View.setClipToOutLine() method, or a android:clipToOutline property. Only rectangles, rounded rectangles, and circle outlines are clipped, and you can use Outline.canClip() methods to detect whether the support is clipped. Crop the view to a drawable shape, set drawable as the background of the view (let the view appear on it), and call the View.setClipToOutline() method. Cropping a view is an expensive operation and does not use shape animation when

Use the following code in Android to sharedpreferences data sharing between two applications, but only if you want to ensure that the android:shareduserid of the two applications is the sameContext context = NULL; try {context=createpackagecontext ("com.android.providers.downloads", context.context_ignore_security);} catch ( Namenotfoundexception e) {//TODO auto-generated catch Blocke.printstacktrace ();} Sharedpreferences mprefs = context.getsharedpr

Create a custom layout (Creating custom Layouts) This article describes how to create a custom notification and use the wearable UI library to create a custom layoutYou also need to knowWearable Design Guidelines(Wear Design Principles)In addition to screen size and instantaneous read capability (Glance ability), creating a layout for wearable apps is roughly the same as a regular phone.Create a custom notification (named notifications)Typically, you

There are several ways to implement multi-language switching for Android applications, and there are a lot of information on the web, and there is a simple and effective way.The steps are as follows:Create a new folder in the resource file Values-en, Create a new Strings.xml, copy the contents of the Strings.xml in the default values folder to Strings.xml in Values-en, and then convert the Chinese content in the folder to English, for example Then add

Today's many Android game software, game software inserted ads is a game advertising manufacturers an important source of income, this article on the Baidu Alliance advertising as an example, add code method.The first step:Register for the Baidu affiliate account, and download the SDK. Address: The second step, open eclipse, the inside of the jar file into the library. nbsp. Copy the jar package from Baidu to your project's Libs directory and import i

The meaning of the signature1. to ensure that every application developer is legally2. prevent some malicious tampering by using the same package Name to confuse the replacement of an already installed program. 3. ensure consistency of our release version (e.g. Automatic Updates will not be installed because of inconsistent versions)Here's a look at the specific steps of signing:1. Right click on the project to select Export, pop up the following window2. Select Export

= "vertical" > LinearLayoutAndroid:layout_width= "Match_parent"Android:layout_height= "Wrap_content"android:orientation= "Horizontal" > EditTextAndroid:id= "@+id/edittext1"Android:layout_width= "0DP"Android:layout_weight= "1"Android:layout_height= "Wrap_content"Android:ems= "Ten"Android:hint= "Please enter an integer of 0-255"Android:inputtype= "Number" /> ButtonAndroid:id= "@+id/button1"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:onclick= "S

First, the cause of outofmemeryerror?Androd memory limit for each applicationSecond, get the Android phone app memory size phone different performance is also different, the phone itself memory may be small, so the memory size for each app is not the same.Method One:[Email protected]:/# adb Shell Getprop | grep dalvik.vm.heapgrowthlimit[Dalvik.vm.heapgrowthlimit]: [96m]Method Two:Activitymanager Activitymanager = (activitymanager) context.getsystemser

Suppose the API or APK in the Android system cannot read and write to the USB device. may not be added to read and write USB permissions, you need to follow such as the following methods to set up:1. Include the following in the android.hardware.usb.host.xml file, for example name="android.hardware.usb.host"/> 2. In tablet_core_hardware. XML file, such as the following : name="Android.hardware.usb.host" > 3. Compile system.img again. and bu

Http://jingyan.baidu.com/article/03b2f78c7b6bb05ea237aed2.htmlStart Fiddler, open the Tools > Fiddler options in the menu bar, and Open the Fiddler Options dialog box.In the Fiddler Options dialog box, switch to the Connections tab, then tick the checkbox after allow romote computers to connect, then click the OK button.Open "Settings", "Wi-Fi" on your Android device, locate the network you want to connect to, tap and hold on it, then select "Modify N

appearance of the CardView: Use the Card_view:cardcornerradius property to set the radius of the fillet in the layout file.Use the Cardview.setradius method to set the radius of the fillet in Java code.Sets the background color of the card, using the card_view:cardbackgroundcolor property. Below is an example of a CardView included in an XML layout file: Card example DiagramCard example DiagramStrumRecyclerview can be seen through the above. It's a lot like the ListView we used t

also includes the interests of users, to their own reputation will also cause a certain harm! Looking back, let's guess how my app was planted with malicious ads at the beginning of the paragraph. Personally, it is to use the above method to decompile, the already written and generated Smali file into my package, and then in the manifest file configuration, and modify the package name, and finally RePack (to get this result is based on, I have two times packaged apk and another anti-compilation

Android share content to other applications, call System dialog or Actionbar pop-up windows are not too free, limited too much, here I provide a fully customizable interface, you can pop windows, or directly in the activity or fragment inside the custom interface. Here to show a key class of code, do the encapsulation processing, I write two demo, free source in: http://download.csdn.net/detail/yanzhenjie1003/8565449/** * @author YOLANDA * @Time April

Today in the use of 360 mobile phone assistant, found that it will automatically create a quick start mode, it feels very interesting, so on the Internet Baidu Some methods, try, there is a way is quite good, I use for reference, first save, I also wrote a Test applet.First, add the code in the mainactivity you want to launch the app into, and in the OnCreate () method, plus a method createshortcut ();Then there is the implementation of the method:private void CreateShortcut () {//TODO auto-gene