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ringer_mode_silent 0#define ringer_mode_vibrate 1As shown in 1, ringtone mode is selected by a set of radio buttons (Qradiobutton). I use Qbuttongroup in my code to manage three radio buttons, and set the ID of each button to the ringtone mode it represents. So when the Qbuttongroup "buttonclicked (int id)" Trigger, our slot "void widget::onringermodeclicked (int mode)" is called, the parameters are directly ring mode, very convenient.Let's take a l

 Android okhttp with physical storage media cache: Disklrucache (2)Based on the Appendix article 8,9, this article combines the Android Okhttp with Disklrucache to combine these two technologies to achieve okhttp-based physical storage media cache Disklrucache.Illustrated with a complete example. The code of the example to implement such a process: After the co

); Init () ;}/ *** button and other controls */Public void Init () {sview = (scrollview) findviewbyid (R. id. mscrollview); opennetcard = (button) findviewbyid (R. id. opennetcard); closenetcard = (button) findviewbyid (R. id. closenetcard); checknetcardstate = (button) findviewbyid (R. id. checknetcardstate); scan = (button) findviewbyid (R. id. scan); getscanresult = (button) findviewbyid (R. id. getscanresult); scanresult = (textview) findviewbyid (R. id. scanresult); Connect = (button) findv

Package cn. c; import java. io. file; import java. io. IOException; import android. app. activity; import android. media. mediaPlayer; import android. media. mediaPlayer. onCompletionListener; import android. media. mediaPlayer. onErrorListener; import android. media. mediaP

tasks, android Development Network prompts that Because Java GC does not need to be manually released, you must be extremely careful when assigning the GC. Frequent GC operations still affect the performance, during debugging, we can use logcat to view the memory release status. 2. Recycling When accessing an attribute, the efficiency is far lower than that of a fixed variable. If the number of cycles is u

. Parent = Parent [I]; For ( Int J = 0; j ) {Treeviewadapter. treenode Node = New Treeviewadapter. treenode (); node. Parent = Child_grandchild [J] [0] [0 ]; For ( Int K = 0; k ) {Node. Childs. Add (child_grandchild [J] [ 1 ] [K]);} Supernode. Childs. Add (node);} supernodetree. Add (Supernode);} superadapter. upd

2017-2018-2 20165312 Experiment four "Android programming" experimental report install Android studio and install Android Studio with Hello World test and debug programCan refer to Lou Teacher's blog Android Development Simple tutorial or reference "Java and

Four storage methods for Android data: SharedPreferences, SQLite, Content Provider, and File (2) -- SQLite and androidsqlite 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 tr

Android sensor (details 2)-common Sensors Direction sensor Orientation (now almost no longer needed, because there is actually no real direction) Magnetic Field Sensor Magnetic Field Temperature sensor Temperature Light pressure sensor Pressure1. direction sensor Orientation: Purpose:The orientation sensor is used to detect the placement status of mobile phone devices. For example, the orientation at the to

) {return mSharedPreferences. getInt (CURSKINTYPEKEY, 0);} return 0;}/*** get the name of the skin folder corresponding to the current skin resource under the assets folder * @ return */public String getSkinFileName () {String skinFileName = null; switch (getCurSkinType () {case 0: // default skin type break; case 1: skinFileName = "skin_blue"; break; case

Android source code "application interface" Analysis 2 (PackageManager and PackageManagerService ): I. PackageManager: In the previous article, we usedPackageManager'sGetPackageSizeInfo function to obtain detailed information about the application.PackageManagerTo find out. 1. PackageManager class: It is an abstract class. We only list several functions to be discussed: Definition: publicAbstractClassPack

specified by Activity NDEF_DISCOVERED, TECH_DISCOVERED, and TAG_DISCOVERED is very important. When an Android device detects an NFC Tag approaching, the Intent containing NFC messages will be sent to the corresponding Activity according to the Order stated by the Action. 2. Android NFC message sending mechanism When an Andro