widget notes android

Phonewindow is the only implementation of this class.Decorview is the underlying container of the current interface. That is, the view set by Setcontentview is a child view of it.The distribution process for top-level view-to-click eventsViewGroup, Dispatchtouchevent, onintercepttouchevent, OnTouch or ontoucheventTop view is generally a viewgroup.After intercepting the event, assuming that ViewGroup set the Montouchlistener, the Ontouch method in listener will block out ontouchevent. Suppose On

Recently made a login dialog box, in the acquisition of data errors, when running the automatic panic.Error statement:EditText Passwordeidttext = (EditText) Findviewbyid (R.id.userpasswordeidttext); Send textString message =passwordeidttext.gettext (). toString ();should be modified to:EditText Passwordeidttext = (EditText) Dialogview. Findviewbyid (R.id.userpasswordeidttext); Send textString message =passwordeidttext.gettext (). toString ();Resources for Online Search:Get a custom dialog boxFin

(i) Global access to the context1. Create Applicationutil class inherits from Application class:1 Public classApplicationutilextendsApplication {2 3 Private Staticcontext context;4 5 @Override6 Public voidonCreate () {7Context =Getapplicationcontext ();8 }9 Ten Public StaticContext GetContext () { One returncontext; A } -}2. In the Androidmanifest.xml file, change the Name property of the application tag (if no attribute is added) to: Package name. applicationutil.

In the Android project, we often need to refer to third-party dependent package library, you may encounter the following reference error questions:Re-open the display management error after setting up the library is reference there is a red fork, Eclipse did not error.Then it is possible because:under the Windows system , your project is not in the same drive or directory as the library project you are referencing. Because if the ANDROID.LIBRARY.REFER

= kilobyte/1024; - if(Megabyte ) { -BigDecimal RESULT1 =NewBigDecimal (double.tostring (kilobyte)); the returnResult1.setscale (2, bigdecimal.round_half_up). Toplainstring () + "KB"; - } - - DoubleGigaByte = megabyte/1024; + if(GigaByte ) { -BigDecimal RESULT2 =NewBigDecimal (double.tostring (megabyte)); + returnResult2.setscale (2, bigdecimal.round_half_up). Toplainstring () + "MB"; A } at -

; Radiogroup> TableRow> TableRow> TextViewAndroid:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:text= "Hobby"android:textsize= "16pt" /> define a vertical linear layout - LinearLayoutandroid:layout_gravity= "Center_horizontal"android:orientation= "vertical"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content" > define three check boxes - Che

; TableRow> TableRow> TextViewAndroid:layout_height= "Wrap_content"Android:text= "Password:"/> EditTextAndroid:id= "@+id/passwordinput"Android:layout_height= "Wrap_content"Android:hint= "Input to Password"/> TableRow> TableRow> ButtonAndroid:id= "@+id/loginbutton"Android:layout_height= "Wrap_content"Android:layout_span= "2"Android:text= "Login"/> TableRow>Tablelayout>The results shown are:　　Obviously, it's ugly, we want to have a certain amount of space betwee

[Android Notes] Precautions for deleting an item in ArrayAdapter: Android arrayadapterArrayAdapter provides the remove Method to delete data from the data source and refresh the interface. The source code is as follows: Public void remove (T object) {synchronized (mLock) {if (mOriginalValues! = Null) {mOriginalValues. remove (object) ;}else {mObjects. remove (obj

= "font-size:medium;" >) where xxx activity string getstringextra if boolean getbooleanextra And so on, you can find it yourself. ( 2 some can have default values, such as Getintextra There are two parameters, the first is the key name, and the second is the default value, which means that if the key value does not exist, the default value is used. classAndroidAmong the threads1 , in UI cannot be modified outside the thread UI the. So who creates the view who can go and modify it.

;Import android. accounts. OnAccountsUpdateListener;Import android. app. Activity;Import android. content. Intent;Import android. OS. Bundle;Import android. OS. Handler;Import android. text. style. UpdateAppearance;Import

("user_ip", "192.168.0.2 ");......Listdata. add (map1 );Listdata. add (map2 );...... Step 3: Set the ListView Adapter SimpleAdapter listAdapter = new SimpleAdapter (this, listdata,// 2nd parameters indicate the data sourceR. layout. list_entry, // XML file describing list entryNew String [] {"user_name", "user_ip "},// Data corresponding to user_name and user_ip in HashMap respectivelyNew int [] {R. id. username, R. id. userip}); // indicates the user_name and user_ip data in HaspMap and t

-related classes in the Code may not be needed. This depends on your function. You do not need to import these data. Use the "import (" alt +/"shortcut key) [Java] import java. util. ArrayList; Import java. util. List; Import android. content. Context; Import android. graphics. Canvas; Import android. graphics. Paint; Import

For details, refer to the Development notes of an Android tablet project-scheduled task backup Create a class to inherit from asynctask Public class backuptask extends asynctask // Obtain the path of the database in use. My path is/dlion/db_dlion.db under the sdcard directory.// The default path is/data/(package name)/databases /*. DB file dbfile = mcontext. getdatabasepath (environment. getexternalstoraged

work what, can also add points. Sometimes I look at my previous notes and look at those one hundred or two hundred notes, which is a full sense of accomplishment. But at that time to write notes too casual, this review, is in the past notes on the basis of the leak, refine, merger of similar, toPerfection! look at the

Write the underlying library, and then write the application for use or verification.As mentioned above, applications can access the JNI library in multiple ways. The simplest way is to directly call the JNI library, the second is to use the service, and the second is to use the service manager.1. Load directly.This is a bit like jumping down from the third floor. Actually, Java has an interface that calls native code. Android development also include

Android desktop controls: The view in appwidget runs in the home screen process, which is not in the same process as our application.Appwidgetproviderinfo object:Provides metadata for app widgets, including layout and update frequency. This object is defined in an XML file. Appwidgetprovider: defines the basic lifecycle function of appwidget. Method: onupdate: after the specified Update time is reached, the latter will be called when the user adds an

Clip_vertical 0x80 Vertical cutting (when the object edge exceeds the container, cut out the upper and lower edges) Clip_horizontal 0x08 Horizontal cut (when the object edge exceeds the container, cut out the left and right edges beyond the container) Android: spacing (Translator's note: Set the spacing between images)

1. Linear Layout-LinearLayout (top-down layout)For example:Java codeAndroid: orientation = "vertical"Android: layout_width = "fill_parent"Android: layout_height = "fill_parent">WhereAndroid: orientation = "vertical" means verticalThe linear layout of the direction. Here, the "vertical" can be changed to "horizontal", which means the linear layout of the horizontal direction.Android: layout_width = "fill_par

AndroidStudy Notes Series Android Application Development Notes (1): Call and send SMS, receive SMS interface, send email (call, dial, smsmanager, broadcast, email) Android Application Development Notes (2): Read the contact information in the mobile phone (

= "@ + id/btn3"Android: layout_width = "wrap_content"Android: layout_height = "wrap_content"Android: text = "Playing sound with SoundPool"/>Android: id = "@ + id/btn4"Android: layout_width = "wrap_content"Android: layout_height =