The Android-4.0.1_r1 source code is released.
The following briefly describes how to compile a Android-4.0.1_r1
1. GetSource code
# Mkdir mirror-googlesource
# CD Mirror-googlesource
# Repo init -- mirror-u
In the Android software design interface, there are too many textview texts and incomplete display. What should I do? We can add a scroll bar for textview.
Android: Id = "@ + ID/bus_detail_content"Android: layout_width = "fill_parent"Android:
With the release of Nexus One and the upgrade of HTC magic G2 to Android 2.1, Google began to provide Android 2.1 SDK download today.
Major API changes:
1. Live wallpapers
1. added the package Android. Service. wallpaper.
2. added the
Using Android ndk to compile the dynamic library, two JNI functions are called in the C file: jni_getdefajavjavavminitargs and jni_createjavavm. The following errors are always reported during compilation:
XXX: undefined reference to
It is said that a newly developed small application is just running on android2.3. After switching to a 4.0 system, the program crash is dumpfounded. ADB logcat reads a string of common information, as follows:
E/AndroidRuntime( 3454): FATAL
An android application consists of four key construction blocks: Activity, intent receiver er, service, and content provider.
However, not every android application requires these four construction blocks. This is not necessary. In some cases, we
The previous section briefly introduced tabs. The following and subsequent articles introduce several simple implementation methods of the android tab.
Http://blog.csdn.net/xia215266092/article/details/9613897
When we see the latest version of QQ
This method is implemented by inheriting the listactivity. Note that the listview ID Writing Method in the configuration file@ ID/Android: List
And in the corresponding activity, call setlistadapter (adapter) to implement data filling and simplify
1. Create the layout file activity_broadcast.xml
2. Create an activity
Public class broadcastactivity extends activity {// set to com. china. UI. new_lifeform, one more message "received broadcast information" before the content is displayed; //
If (build. version. sdk_int> = build. version_codes.ice_cream_sandwich ){}Version Information under the build. version_codes class
static int BASE //October 2008: The original, first, version of Android. static int BASE_1_1 //February 2009: First
Installing the Android 2.2 SDK has the following problems:
-= Warning! =-A folder failed to be renamed or moved. On Windows this typically means that a program is using that folder (for exampleWindows Explorer or your anti-virus software .) please
This class is mainly used to query and determine network connection information.
ConnectivityManager cm = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);
Networkinfo getactivenetworkinfo () obtains the network information currently
The classes in this package mainly use preference as the parent class. preferenceactivity inherits from listactivity to display the UI and display the UI in listview form. Preference is mainly used for configuration files and the selection is based
Audiomanager AM = (audiomanager) getsystemservice (context. audio_service );
// Call volume
Int max = aM. getstreammaxvolume (audiomanager. stream_voice_call );
Int current = aM. getstreamvolume (audiomanager. stream_voice_call );
Log. D
Previous understandings of the four models are limited to theory and two simple tests (singletop and singletask)
Today, I tried to test my head, dizzy, and found the singleinstance cup.
If you are familiar with the four modes, jump to the bottom of
The path class encapsulates the geometric paths of linear segments, quadratic curves, and Cubic Curves composed of multiple compounds (outlines. It can be drawn with canvas. drawpath (path,Paint), whether it is fill or touch (paint-based style), or
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