1. LayoutAnimationController usageWhat is LayoutAnimationController?1. LayoutAnimationController is used as a control in layout orSet animation effects for controls in ViewGroup2. Each control has the same animation effect.3. The animation effects of these controls are displayed at different times.4. LayoutAnimationController can be set in the xml file or in the code.2. Combination of ListView and Animation
release the SDK together with the application? There are also technical barriers. I used to spend a lot of time,Install the cross-compiler to create the so and use the asset (Resource) method to bind the so release. But this method onlyIt can be a clever way, not an official... the rest of the full text>Android interview considerations?
1. The foundation lies in the Activity lifecycle. You must be familiar with onResume onNewIntent onDestroy onFinish
cacheThe bitmap cache stores AndroidBitmapObjects. These are fully decoded images ready for display or postprocessing.On Android 4.x and lower, the bitmap cache's data lives in the ashmem heap, not in the Java heap. this means that images don't force extra runs of the garbage collector, slowing down your app.Android 5.0 has much improved memory management than earlier versions, so it is safer to leave the
not affect personal use. Currently,AndroidThe system only sets the permissions control on a subset of the sensors, and the user only installsAppwill not be reminded of this permission to dynamically modify permissions. The existing approach, most of the access control for the sensor is not enough granularity, there is a small number of access control for the sensor, but the false data is constant, which will make some applications (such as relying on changingGPScoordinate) crashes, andsemadroid
Basic knowledge of Android [project training-implementation of project structure and main interface] [4], android Training
[This project training is a comprehensive exercise of basic Android knowledge. Note: some pictures and materials will be used in the project and they will be organized at will. A resource will be
WQVGA400 (240x400) WQVGA432 (240x432)
HVGA (320x480)
WVGA800 (480x800) WVGA854 (480x854)
Large screen
WVGA800 * (480x800) WVGA854 * (480x854)
Table 1
3.3 mobile phone size distribution (http://developer.android.com/resources/dashboard/screens.html) 3 shows, the current is mainly to the resolution of 800*480 and 854*480 mobile phone users mostly
Figure 3
From the above s
Android ListView adapter in various types ViewType error:caused by:java.lang.arrayindexoutofboundsexception:length=3; Index=32 at Android.widget.abslistview$recyclebin.addscrapview (abslistview.java:6822) 3 at Android.widget.AbsListView.trackMotionScroll (abslistview.java:5179) 4 at Android.widget.AbsListView.scrollIfN
Interface Programming for Android applications (4) and Android Interface Programming
Third group of UI components: ImageView and its subclass
The main function is to display images. Any Drawable object can be displayed using ImageView.
1. image browser
The image browser below can change the transparency of the image to be viewed by calling the setImageAlpha ()
to fill the blank part with the No. 0 action order.(3) Collapsecolumns property: Hides the specified column in the No. 0 action order.(4) Layout_column property: Sets the component to display in the specified column in the No. 0 action order.(5) Layout_span property: Sets the number of columns occupied by the component display in the No. 0 action order.4. Absolu
Android interview questions (3) and android interview questions
1. Describe the lifecycle of an Activity.
Activity lifecycle methods include:OnCreate (), onStart (), onReStart (), onResume (), onPause (), onStop (), onDestory ();Visible life cycle: from onStart () to onStop () called by the System ()Foreground lifecycle: From onResume () to onPause () ca
1. Some skills can also be used to transmit data between activities. Both Windows and Linux operating systems support a technology called clipboard (a program copies data to the clipboard, any other program can obtain data from the clipboard );
2. Create an Android project named "android_intent3;
3. Add the Button in the main. xml file:
4. Create the layout file
Android mobile guard-business logic of navigation interface 4, android guard
This article implements the business logic of navigation interface 4. The navigation interface 4 is as follows:
For more information, see http://www.cnblogs.com/wuyudong/p/5952640.html.
The Code is
of the Android NDK; and the HAL source.Configure the download environment for Android source code: 1. Create a directory to hold the download script file. 2. Download the repo script file (for downloading Android source code). 3. Create a directory to hold the Android sourc
with the same name is displayed! This is strange ~View the parent processes of these two processes. One is zygote and the other is com. antutu. ABenchMark. From this we can infer that the last process is from the previous process fork, and it gets stuck before the fork can get exec.
Connect to adb and check the status of the two processes:
Process: 9691(Gdb) bt#0 read () at bionic/libc/arch-mips/syscall/ read. S: 13#1 runtime in executeProcess (env = 0x1c7e60, javaCommands = 0x2c118ab8, javaEnv
Today, we mainly implement our main interface: international practices:
We have already completed the interface on the first day. Today we will implement the interface function,
This interface provides the following functions:
1. display the difficulty of the game: Use popupwindow and select and change the displayed number.
2. display the default picture to be jigsaw puzzle, including a custom image: This is relatively simple, just the simplest application of the GridView.
Compile the JNI method for the hardware abstraction layer (HAL) module of Android in Ubuntu to provide the Java access hardware service interface (Lao Luo study note 4), androidjni
In the last two articles, we introduced how to write drivers for Android hardware, including how to implement kernel drivers in Linux kernel space and Hardware Abstraction Layer interf
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