Android

Basic principle: After the Android system clicks the dial-up key, a broadcast is sent, and the action is intent. action_new_outgoing_call. we write our own reciver to accept this broadcast and retrieve the dial-up number from the intent for the

dip is not the pixel density, and the pixel density is DPI. Quote: dip: Device Independent pixels (device independent pixel ). different devices have different display effects, which are related to the hardware of the device. We recommend that you

The system will send a broadcast after the boot is complete, as long as you have your ownProgramAfter receiving the broadcast, start the corresponding activity or service. Add these sentences to manifest to accept System broadcast.

The slidemenu project depends on the actionbarsherlock open-source project, so you need to download two open-source projects to study it. Use git: Slidemenu: https://github.com/jfeinstein10/SlidingMenu.git Actionbarsherlock:

ManifesAdd the following content to the T file: ...................... Add to layout File Android: Id = "@ + ID/map_view"Android: layout_width = "fill_parent"Android: layout_height = "fill_parent"Android: enabled =

When the finger scrolls up or down in the listview, the background of listviewitem turns black, because the background is optimized to improve the performance during scrolling. To improve the scrolling performance, the android framework introduces

1. Generate keystore Run the following command in the c: \ Program Files \ Java \ jdk1.6.0 _ 10 \ bin> directory and enter keytool-Genkey-alias Android. keystore-keyalg RSA-validity 100000-keystore Android. keystore After the command is

Recently, the blogger used aidl to call a project, so after studying it for a long time, he finally figured it out. Here, I will explain it to the beginners:First, create two Engineering Projects 1 and 2 under eclipse We use project 1 as the called

The Code is as follows: Audiomanager = (audiomanager) This. getsystemservice (context. audio_service); audiomanager. setmicrophonemute (false); audiomanager. setspeakerphoneon (true); // you can use the speaker to open the plug-in, even if you

Your imageview is only 128*96 pixels in size, just to display a thumbnail. It is obviously not worthwhile to load a 1024*768 pixel image into the memory. Therefore, we need a solution to solve this problem. Public static int calculateinsamplesize

This example provides the basic usage of the list control listview. By carefully reading the code and comments, you can create a clear control architecture in your mind. It mainly paves the way for creating a file directory browser, and implements

Sometimes we need to modify the data or UI of the activity in a class other than the activity, or modify the values of other classes in the Custom class. This is quite troublesome! At this time, we need a global container to store the data to be

From: http://blog.csdn.net/larryl2003/article/details/6919513 The scaletype of imageview determines the image display on the view, such as the proportional scaling of the image, and whether the image is displayed as a whole or a part. The settings

For example, when you open a text file through the document viewer, a list of software that can be opened is displayed. How can you make your software appear in this list? The first tag is available in every program. The key is

In the previous slidingmenu Study (I), I learned about the problems that often occur when we import slidingmenu to our project. Below we will officially learn about it. Let's first look at an effect: Do you see the differences between the two

  Android 4.0, codenamed ice cream sandwich (ice cream sandwich), will be released in the fourth quarter of this year. Before that, let's take a look at some issues related to Android 4.0. 1. One System Android 4.0 only provides one version and

Android development: How to Use styles and themes A style is a set of display attributes of a view or window. A style can specify attributes such as height, fill, font color, font size, and background color. A style is an XML resource file separated

Resources resources = context. getresources ();Int indenied = resources.Getidentifier(Context. getpackagename () + ": drawable/" + iconname, null, null );If (indentify> 0 ){Icon = resources. getdrawable (indenable );} The following is the API

Directly Add code Int runnableinterval = 5000; // switch Interval Private handler = new handler ();Private runnable = new runnable (){ Public void run (){ Do (); // the task to be periodically executed Handler. postdelayed (this,

Basic4android 1.8, which is used to write Android applications in basic   Basic4android v1.8 is released. This version includes many new features: Code Editor -Automatic case correction of variables and subs (based on their declaration)-Highlighting