wake-up lock problem. No matter whether your keyboard is unlocked by keyguardlocka or not, the reenablekeyguard () method of the keyguardlocka object will not be abnormal.
These two locks have some conceptual understanding. If you think you have obtained a keyboard Lock Object, you can lock the screen. This is a big mistake.You can't lock the screen opened by other programs (if you can, A for loop keeps lo
A few days ago, I received a request from the customer to create an Android mobile phone and screen saver on the Panel. In fact, it is quite strange that screen saver is used for computers, but when the phone is not used, is it OK to turn off the screen? It is said that the current smart phone battery is not durable an
Android Screen Switch
Android controls the direction of activity, as long as you add a sentence to the corresponding activity node in the Androidmanifest.xml
android:screenorientation= "Landscape" (landscape is horizontal screen, portrait vertical screen).
I have mixed wi
take a look at how to capture events that show directional changes in the program, starting with the Activity.onconfigurationchanged method.The Android system reloads different resource files (such as layout layouts resources) based on changes in the configuration of the device (such as the change in the screen orientation) , and it implements the reload of th
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Event Playback Mode
Create a new. Sh script (line break must be UNIX.LF)
Puts all the event for the specified action captured into the
1 Principle
Android has three screen unlocking protections: Pattern unlocking, PIN password unlocking, and password unlocking.
The interface is as follows:
Chart 1 pattern unlocking page
Figure 2 PIN password unlock page
Figure 3 password unlock page
We can use java. lang. object. android. app. keyguardLock, a subclass of KeyguardManger, can control the
for the unit used to set the text size when sp,android development
Can be scaled according to the font size preference, it is recommended to use 12/14/18/22SP as the size of the font set, do not recommend the use of odd and decimal, easy to cause loss of precision.
This article introduces the basic concepts above, and then we introduce the solution of screen adaptation from three angles of layout adaptat
) . Finally, let's take a look at how to capture events that show directional changes in the program, starting with the Activity.onconfigurationchanged method.The Android system reloads different resource files (such as layout layouts resources) based on changes in the configuration of the device (such as the change in the screen orientation) , and it implement
document: specify one or more configuration changesthat the activity will handle itself. if not specified, the activity will berestarted if any of these configuration changes happen in the system. In this wayProgramThe activity in does not repeatedly call oncreate () or even does not call onpause or onresume. Only one onconfigurationchanged (configuration newconfig) is called ). If you need to reload data, you do not need to make any modifications. However, if you need to save the previous oper
I spent half a day studying the custom lock screen and found that the implementation is not very mysterious. However, some points are worth noting.
First of all, the screen lock interface is generally enabled when the screen is turned off and displayed in front of us when the screen is turned on, so we know the time to
If the android simulator has been started, you can use the shortcut key F12 or Ctrl + F11 to switch. Of course, you can use the command line to launch the simulator by using the receivemulator.exe-skin HVGA-L. (I also found that when my keypad is locked, I press 8 and then press 7, and the screen is landscape. Although I don't know why, I 'd like to add it here.) It should be noted that, the program will re
Terms1. screen size: the actual screen size.The actual size of the android lecture screen is divided into three general sizes.2. Aspect Ratio
3. Resolution resolution
4. Density
5. Density-independent pixel density-independent pixels
Description: adnroid1.6 or later sdks. A new
1 principle
Android has three kinds of screen unlock protection: pattern unlock, pin password unlock and unlock password.
The interface is as follows:
Diagram 1 Pattern Unlock interface
Chart 2 pin password unlock interface
Chart 3 Password Unlock interface
We can use the subclass Keyguardlock in Java.lang.Object.android.app.KeyguardManger to control the
Original articles, reproduced please specify (from: http://blog.csdn.net/leejizhou/article/details/51233342 Li Zizhou blog)This blog post for you to introduce, when the mobile phone screen rotation, we should be how to deal with, first understand the default Android screen rotation principle, when the phone is rotated when the gravity sensor sensor, will destroy
This example describes the custom lock screen for Android programming. Share to everyone for your reference, specific as follows:
Spent half a day studying the custom lock screen, found that the implementation is not very mysterious. But some places are worth noting.
First of all, the process, the lock screen is usua
From: http://www.linuxidc.com/Linux/2011-06/36828.htmAndroid screen orientation change and onconfigurationchanged event
Note: The onconfigurationchanged event can be triggered not only when the screen direction is changed, but also when other system settings are changed, such as opening or hiding the keyboard.When the screen direction changes, the onconfiguratio
This article describes the Android programming implementation of WebView Full-screen playback method. Share to everyone for your reference, specific as follows:
Recently because the project to use WebView load HTML5 video, start not full screen, did a long time to make! Then according to my understanding of how to achieve full
1. Lock screen time
Lock screen time controlCodeLocation: frameworks/base/packages/settingsprovider/src/COM/Android/providers/settings/databasehelper. Java
Private void loadsystemsettings (sqlitedatabase dB ){......Loadintegersetting (stmt, settings. system. screen_off_timeout, R. Integer. def_screen_off_timeout );......
Control Data in: Frameworks/base/pack
There is a section in the Android development document that explains the problem. In simple terms, activity is the primary mechanism responsible for interacting with the user, and any "Configuration" change can have an impact on the interface of the activity, and the system destroys and rebuilds the activity to reflect the new Configuration.
The "screen direction" (orientation) is a configuration that looks
. ORIENTATION_LANDSCAPE: orientName = "landscape"; case Configuration. ORIENTATION_PORTRAIT: orientName = "portrait"; case Configuration. ORIENTATION_SQUARE: orientName = "square"; default: orientName = "undefined";} Logger. get (). I ("conf. orient: "+ orientName );
Note that the definitions of constants related to the two (ActivityInfo and Configuration) are inconsistent. constants in ActivityInfo are used to determine the display direction, the constants in the Configuration object are clea
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