Android

Preface: Recently, I started to study Android automated testing methods, and made some simple arrangements for some of the tools, methods, and frameworks, this includes the android testing framework, CTS, Monkey, Monkeyrunner, benchmark, and other

Animations provides a series of animation effects that can be applied to most controls.Animations can be divided into two categories:Category 1: Tweened AnimationsThis type of Animations provides rotation, movement, stretching, and fade-out

Some time ago, a netizen sent a private message to me (@ Wu Ge) and asked me if I had done magnetic field sensors and could I have done compass? As I have already said in the first section, the magnetic field sensor can be used, but the algorithm is

(Reprinted please indicate the source: http://blog.csdn.net/buptgshengod) 1. Background We know that android provides a system screenshot function, that is, to press and hold the power key and the volume reduction button for 0.5 seconds, the system

1. Download the Android source code Android source code can be downloaded from 4.0 using SDK Manager. Open SDK Manager and you can see that 4.4 has been used as an example: But it always prompts that the download fails and the connection times out.

The startup time of an application is also an important indicator to measure the performance of the application, so let's take a look at how to get the time required for a program to start. There are several methods to get the start time of a

  When you use a Button, there are two ways to achieve the "Press" effect:1. In the code. ImageButton. setOnTouchListener (new OnTouchListener () {@ Override public boolean onTouch (View v, MotionEvent event) {if (event. getAction () = MotionEvent.

MainActivity is as follows: Package cc. textview5; import android. OS. bundle; import android. text. textUtils; import android. view. view; import android. view. view. onClickListener; import android. widget. button; import android. widget. toast;

It has been more than half a year since I learned how to load WebKit. Now I have time to handle the loading process again. We hope to gradually improve the details and finally have a systematic summary. First, we can understand the loading logic of

If you want to copy a custom Class Object using the copy or mutableCopy method, the class must implement or protocol. Otherwise, the program will crash: Console output: 2014-02-01 01:11:09.087 Chocolate[951:303] -[Desserts copyWithZone:]:

For those who already have a certain Linux Foundation, Raspberry Pi should be very simple and natural to learn. In their eyes, Raspberry Pi is a simple, cartoon version of Linux. However, it is not easy for me to compile, compile, and run a simple

The program recently encountered some strange problems: the source is unknown, and only a problem occurs for a specific model. If you have met, consider whether or notHardware acceleration(Hardware Acceleration) Error Since Android3.0 (API level 11),

Android SQLite-related java source code has repeatedly mentioned support for nested transaction. SQLite itself does not support nested transactions and can only be replaced by savepoint. Nested transactions are similar   BEGIN BEGIN

MainActivity is as follows: Package cc. test; import android. app. activity; import android. OS. bundle; import android. view. view; import android. widget. adapterView; import android. widget. arrayAdapter; import android. widget. spinner; import

First, paste the program running result of this article. The above is the playing/stopping audio, and the progress can be adjusted using SeekBar. below is the playing/stopping video, and the progress is also adjusted using SeekBar: Source code

   I. Clock Components  1. AnalogClock component   Appearance: The widget displays a dial with minute and second hands rotating; Attribute Introduction: This component can be used to set the dial image and display the image by the hour hand; --Set

Android loaded the dynamic library code in dalvik/vm/Native. c. The load method is to call the dlopen and dlsym functions in libdl. You can do some operations in these functions. Replace dlsym with my_dlsym so that you can call your own

It is written in C ++ and modular design. It can be embedded into programs written in any language, or directly called in various popular scripts. All operations are encapsulated in the module. You only need to call the corresponding export function

The Event Callback Function interfaces after 3.0 are different, such as the menu_selector () of the button and schedule_selector of update. The new callback interface is replaced by four CC_CALLBACK interfaces.   The following describes some

The idea is simple: 1. Read the database data and process it as needed. 2. Write Data to the SD card The following uses the export system contact as an example: MainActivity: Package com. home. exportcontact; import java. io. file; import java. io.