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READ_CONTACTS code for AndroidManifest. xml: After the above files are compiled, the application can run correctly on the Android2.1 simulator. What if the app runs on android1.6? 1.6 does not have the ContactsContract class system, so an error will be reported. Note that the ContactContract class is added in API Level 5, which is not supported in earlier Android versions. On Android 1.6 (API Level

Compile Android source code Android compilation details are provided on the official website of Android. Http://source.android.com/source/building.html Initialize the compiling environment Switch to the android source code directory: $ cd WORKING_DIRECTORY Run the following command to load the commands and environment

Android interview questions (2) and android interview questions 1. What is the difference between int and Integer? Java provides two different types: The reference type and the original type (or the built-in type ). Int Is the original data type of java, and Integer is the encapsulation class provided by java for int. Java provides encapsulation classes

J brother --------- interview Summary of Beijing Android recruitment companies 2, --------- android I followed the previous article to write down the http://blog.csdn.net/u011733020/article/details/45998861, thank you very much in the previous article to me pointed out the problem of the brothers. Interview company: wudaokou interview time: May 27 AM. interview

Android learning notes-Menu (2), android learning notes Knowledge point: This time, we will continue the learning of menus not finished in the previous article, Context Menu and pop-up menu ). Context Menu The Context Menu provides operations on specific items or context frameworks on the UI interface, just like the context menu in Windows. In

then he will let the user choose: Do not process; disable the notification (in fact, kill the process, the entire software stops running); uninstall the software. Although I have never released an Android Application, I know that, if you make money by using software, your income is already embarrassing. In addition, these fucking software provide these fucking functions ...... Ah If you don't like paid software, we will be free of charge. If you clic

Build an android universal pull-down refresh framework-XRefreshView (2), android pull-down refresh I. Preface Since the last release of the XRefreshView (1) framework for building an android universal pull-down and refresh framework, it has been very busy for more than half a month, however, I update and maintain XRefr

The overall call logic is:1. Compile the FFMPEG Library2. Use JNI to write C code, which must contain the corresponding FFMPEG header file3. Write the corresponding Android. mk file, which specifies the C code to be compiled and the dynamic library to be linked.4. Execute ndk-build to generate the corresponding JNI Library5. Create the andorid Java program. The corresponding FFMPEG library of loadlibrary an

Create a list If you are developing an application using the sip api, remember that this function is only supported in Versions later than Android (API level 9. In addition, not all devices running Versions later than Android (API level 9) provide SIP support. Add the following permissions to your application list to use the SIP 1. Android. Permission. use_sip

2. Change Activity to a window: Activity attribute settingIt's easy to talk about it. Some people may want to make the app something floating on the main interface of the mobile phone.You only need to set the Activity topic to define the Activity in AndroidManifest. xml.Local sentence: Xml Code Android: theme = "@ android: style/Theme. Dialog"

Animation can also be stored in an XML file, which improves the maintainability of the program. To write an animation in XML, follow these steps: 1. Create a folder named anim under the res folder 2. Create an xml file and add the set tag first. Modify the tag as follows: Android: interpolator = "@ android: anim/accelerate_interpolator"> 3. Add the rotate, alpha,

How to obtain android mobile phone contacts and display them in letters (2): android contacts The following describes how to categorize and display contacts with the same initials: In the adapter implement SectionIndexer In this way, the adapter must implement the following three interfaces: @ Overridepublic Object [] getSections () {// collection of sections} @

The following uses an example in the android SDK to describe how intent is defined and parsed. This application allows users to browse the notepaper list and View Details of each notepaper. (1) The first activity in the example is com. google. android. notepad. noteslist, which is the main entry of the application, provides three functions, which are described b

, Dex can slow down a lot because of the way it merges inside of Dex.2. Libraries and plugins-based Dagger2 and some other annotation processors:In the gradle2.x version number we have used the new "Incremental Java compilation" feature, but this feature does not work with the annotation processor, in the BETA2 version number, if a project through the "ANDROID-APT" plug-in using the annotation processor, we

launched from the command line was different from the version of Android Studio so The following instructions may not apply.1. Launch Android virtual Device Manager:? Inandroid Studio, select Tools>android > AvD Manager, or click the AvD Manager icon on the toolbar.Or, on the command line, change the directory to Note: When you start the command line, the AVD ma

1. IntroductionThis analysis is a very simple program, is a primer on the introduction of anti-compilation tutorialMainly learn about the use of tools, the following is downloaded from the Internet test samplesTest Sample ex_05_01_.apkLink: http://pan.baidu.com/s/1sjOIXJn Password: 5uq42. First, use Dex2jar and Jd-gui to viewReference: Android Learning Tips (8)---Mac Dex2jar and Jd-gui use先提取apk中的classes.dex，使用dex2jar工具使用jd-gui打开classes_dex2jar.jar查看源

How to Write a serious Android music player 2 and android music playerThis article describes how Interaction with music playback Service If you have a little experience, you know that you can put operations on the Service for a long time. How can you effectively communicate the interface with the music playback Service? In this chapter, I will give my answer,

check begins, only checks are done. Enforce start, not only check, do not have permission to throw an exception.4, the Authority mechanism Realization Analysis 4.1, CheckPermission1. If the incoming permission name is called NULL, then the packagemanager.permission_denied is returned.2. Determine if the caller UID meets the requirements.1) If the UID is 0, it is the process of root permission and the permi