. The image requires a path style that is easy to draw, such as
2. Path animation
Use property animation to control the drawing state.
The Objectanimator Trimpathend property determines the number of path to be drawn, and the remainder is not drawn, with a value range of 0 to 1. The Duration property represents the duration, 6000 or 6 seconds.
3. Animated-vector image
Apply th
On the fifth day of summer training in 2011, I would like to share with you my study on Android location. This is the most basic introduction to obtaining geographical location information, next time, I will introduce you to the location selection of more quality metrics Criteria. Today I will write a simple article and select two important SDK methods. I have translated them by myself, I also added my own understanding. I hope you can give me some ad
SQLite is a lightweight database designed for embedded devices. It has only five data types:
Null: NULL
Integer: integer
Real: Floating Point Number
Text: String
BLOB: Big Data
In SQLite, the Boolean and date types are not specifically designed, because the boolean type can replace true and false with integer 0 and 1, the date type can have text, real, and integer values in a specific format instead of display. To facilitate the operation of the date
Elevation of permission for devices read/dev by Android applications (2)In privilege escalation for devices in/dev for Android applications (1), two methods of privilege escalation are briefly summarized:
Device_initAnd
Init. RC. In this article, I will summarize in detail that it is easy to confuse people without being careful.
Init. c,
Device_initAnd
Init. RCHo
bitmapdrawable (IS);Bitmap Bmp=bmpdraw.getbitmap ();Or use the following method:Bitmapdrawable bmpdraw= (bitmapdrawable) res.getdrawable (r.drawable.pic180);Bitmap Bmp=bmpdraw.getbitmap ();Get a bitmap using Bitmapfactory(creates Bitmap objects from various sources, including files, streams, and byte-arrays.)Use the Bitmapfactory class Decodestream (InputStream is) to decode the bitmap resource and get the bitmap.Bitmap Bmp=bitmapfactory.decoderesource (res, r.drawable.pic180);All the functions
How to Create Menu 3: Android Development 2, menuandroid
Three menu creation methods
I. OptionsMenu --- option menu
Menus in Android applications are hidden by default. Menus are displayed only when you click the MENU key on your mobile phone. This Menu is called an Options Menu or a system Menu. Android 3.0 does not r
Android View measure (2) related to custom UI control measure
This article simulates three roles: Android architect-Xiao Fu, Android control development engineer-Xiao, Android Development Engineer-Xiao Bai. The following describes the measure process from different angles o
Document directory
1. Added system calls.
2. Add at_secure to linker
Android security defense (2): seandroid bionic
Recently, seandroid will conduct comparative analysis on various modules, learn to transplant SELinux to Android, and learn program control policies.
As the first analysis module, bionic briefly de
the methods defined in SAXParserFactory. The newinstance () and Newsaxparser () used in the code are used to produce a saxparserfactory instance and produce a SAXParser instance respectively.2, XMLReaderXmlReader is an interface. Through its Setcontenthandler () method, you can set the processing handler of the parse event, and the parse () method can begin parsing.An instance of XmlReader is obtained through the Getxmlreader () method of the SAXPars
Android ndk for our role and basic knowledge in Android ndk development skills 1I have already explained it. Let's talk about practical skills today.
1. to print logcat in JNI, first add # include
Jstring jlog; // The characters to be printed from JavaJboolean iscopy;Const char * szlog = (* env)-> getstringutfchars (ENV, jlog, iscopy); // convert Java Unicode characters to utf8 characters_ Android_log_pri
After downloading the previous android sdk manager
650) this. width = 650; "src =" http://www.bkjia.com/uploads/allimg/131228/103921OM-0.png "title =" QQ123.png "/>
The Tools below are downloaded.
At this time, the newly created sdk directory becomes the following content.
650) this. width = 650; "src =" http://www.bkjia.com/uploads/allimg/131228/103921DC-1.png "title =" QQddddd.png "/>
The main
the edge of the screen and should not be visually aligned with other widgets. Therefore, you should add margins around all the borders of your widgets.
From android4.0, app widgets automatically add margins between the widget's border and border to better align with other widgets and icons on the home screen. To obtain this benefit, we strongly recommend that you use more than 14 SDK versions for your applications.
Write a single layout that can adapt to the custom margins of the earlier versio
Android game guidance (2. Basic game settings)
The previous section has learned a basic OpenGL framework. Today, we will further set up 2D game-related things. I love 2D games more than 3D games. I believe most people do the same.Table of contents
1 game full screen display
2. Set the OpenGL 2D Environment
2.1 onsurfacecreated
2.2 onsurfacechanged
compiled file has become a constant, and no final variable is declared, and we can see that the default value of string, which is still the type default value, is null at the point where it is declared, and the default value of int is 0. So when Dexclassloader loads the class file, it will initialize the values for the above static variables in the Increasing the speed of the Dexclassloader loading class is to improve the execution speed of the Throu
Android Canvas plotting series (2)
The Paint brush is used here. Let's move and translate official documents.
1. setAlpha (int)
Sets the transparency. The parameter range is 0-255.
To change the attribute, we recommend that you change it to (0-1) and multiply it by 255.
2
In the Android messaging mechanism. It not only provides a message loop for Java used by application development. In fact, the Java mechanism finally depends on native to achieve. The native not only provides a set of messaging and processing mechanisms, but also provides a listening mechanism that defines the I/O time of the file description descriptor. Let's analyze it from the detailed code below.Key classes for the native layer:Looper.cpp. The hib
;getintfield (env, coord, xId);Print x data to determine if the value is correct during Android operationLOGD ("x =%d", x);Fragment 2: Calling the initial methodFind Class class COORDJclass cls = (*env)->findclass (env, "Com/oki/led/jni/nativeobj/coord");Call its initialization method on this classJmethodid id = (*env)->getmethodid (env, CLS, "To convert data from a CLS class to a Jobject classJobject param
Android: an efficient UI is a popular UI (2)
In the previous blog, I explained two methods to optimize the UI design. The first one is to use as few components as possible to implement the layout function, the second is to use the
It's almost four years old and running the old android 2.2 machine in my pocket. For me, any application larger than 10 MB has the s
1,android Framelayout Android:foreground property to set the foreground color when clicked Content of Poster_selector.xml:In this way, when the user clicks to this control, the foreground color will appear, the best foreground color is annulus, that is, the four sides appear highlighted, do not affect the front.2,android:scaletype control picture for ImageView displayAndroid:scaletype is a size that cont
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