Android

When I first read this code, I felt very strange. I didn't see any function that opened the file, nor did I close the file, so I could directly read and write the code. Can an object be opened automatically? It is impossible to call APIs in linux!

In the init. rc file, you can see the following services loaded: Service nexus/system/bin/nexus Socket nexus stream 0660 root system Disabled   The nexus service code is in the directory: Android-2.0/system/core/nexus   The nexus Service monitors

If you are a human being, you need to be generous, haina baichuan, and smooth in your work. This reminds me that programming is also the case. You need to expand the code and adapt the interface.This article is a must-have knowledge for android

The layout-land and layout-port directories are mainly used to save files in the application's interface layout. Layout-land is the layout setting for horizontal screen display on the android application interface, and layout-port is the layout

The Margin and Padding of Android are the same as those of Html. As shown in: the yellow part is Padding, and the gray part is Margin. In general, Padding is an internal border, and Margin is an external border. The corresponding property

As we all know, Android is based on the Linux kernel, so it directly supports the Linux WLAN interface. The kernel driver of WLAN is dynamically loaded based on user settings on the UI. the control and security of WLAN are achieved through

Android refers to the Message Loop Mechanism of Windows to realize the message loop of Android.Android uses logoff and Handler to implement the message loop mechanism. Android message loops are targeted at threads (each thread can have its own

This article demonstrates how to set up the Android development environment without configuring environment variables. All software is the latest version when I write this article. I hope you will like it.Related downloads(1) download Java JDK:Go to

  Recently I wrote a mini game for android2.2. After I put it on google market, I found that some versions of Android 1.5 and Android 1.6 were downloaded. I put it on the simulator and found that none of them can be started. I checked the website

  UUID + unique identifier of device serial number (unchangeable) Private String getMyUUID (){ Final TelephonyManager tm = (TelephonyManager) getBaseContext (). getSystemService (Context. TELEPHONY_SERVICE ); Final String tmDevice, tmSerial, tmPhone,

The process is as follows: [Java] TabWidget tabWidget = tabHost. getTabWidget ();For (int I = 0; I View child = tabWidget. getChildAt (I ); Final TextView TV = (TextView) child. findViewById (android. R. id. title );RelativeLayout. LayoutParams

/*** Used to determine whether the service is running in the background* @ Param context* @ Param className the service name determined* @ Return true: false: not running*/Public static boolean isServiceRunning (Context mContext, String className

As described in the android documentation, the SDK level (integer) the phone is running is available in:Android. OS. Build. VERSION. SDK_INT;The enum corresponding to this int is in the android. OS. Build. VERSION_CODES class. Code example:Int

The obvious difference between SurfaceView and View is that the Surface does not need to update the View through a thread, but you must use the lockCanvas method to lock the canvas before painting, and then draw the canvas, after that, use the

How to compile alsa-utils in android I recently looked at the ALSA driver and tried to compile the alsa-utils tool in android. The following describes how to compile and solve the problems encountered during the process: First of all, I downloaded

This example is similar to the previous example. You only need to change the orientation of one LinearLayout from vertical to horizontal, and remove android: layout_gravity = "center_vertical" Android: orientation = "horizontal"Android: layout_width

Previous: http://www.bkjia.com/kf/201208/149892.html[Java/*** Get the file size** @ Param f* @ Return* @ Throws Exception*/Public long getFileSizes (File f) throws Exception {Long s = 0;If (f. exists ()){FileInputStream FCM = null;FS = new

An example is provided to summarize the basic usage of ListView. 1. Create a project: ListViewDemo. 2. Code in main. xml. [Html]Android: layout_width = "fill_parent"Android: layout_height = "fill_parent"Android: orientation = "vertical">Android:

Package com. example. file; Import java. io. FileInputStream;Import java. io. FileOutputStream; Import org. apache. http. util. EncodingUtils; Import android. app. Activity;Import android. content. Context;Import android. graphics. Color;Import

Code for obtaining the mobile phone IP Address: [Java]Public static String getLocalIpAddress (){Try {For (Enumeration en = NetworkInterface. getNetworkInterfaces (); en. hasMoreElements ();){NetworkInterface intf = en. nextElement ();For