android wear 3 0

There are often problems with Android projects that update the UI after a time-consuming operation in a child thread, and then summarize the updated methods for some of the projects that you have experienced:Method One: With handler1, the main thread defined handler:Handler Mhandler = new Handler () {@Overridepublic void Handlemessage (Message msg) {super.handlemessage (msg); switch ( Msg.what) {Case 0://co

reprint: http://www.jianshu.com/p/d3027acf475aToday to share a layout of a small trick, I hope you can also write a better performance of the layout, my personal purpose is to use the minimum view to write the same effect layout with textview simultaneously display pictures and text:Check it out first. Image 3.png above these four blocks of the area believe that you often encounter in the project! (General notation ImageView and TextView combination)

; // emoticon Text Private Final int [] Emotionimgs; // Emoticons Pictures Private Final Hashmap// text picture corresponding Private Final Pattern Mpattern; // regular MatchStep-by-step initialization of the required dataString PackageName =Context.getpackagename (); Resources Resource=context.getresources (); Emotiontext=context.getresources (). Getstringarray (R.array.emoji);intLength =Emotiontext.length;emotionimgs=New int[Length];emotiontotext=NewHashmap(); for(inti =

Lua learning Note 3 Android calls Lua. The Lua script calls back Java using loadlib and transmits multiple parameters. Multiple parameters can be received in Java and each parameter is displayed. The method for loading the Lua script in Android is not the focus of this article. You can refer to the notes in front of this blog. Lua script: Function callback ()

Basic tutorial for Android -- 8.3.9 Paint API -- ColorFilter (color filter) (1-3)This section introduces: We have learned the MaskFilter (mask) and used its two sub-classes BlurMaskFilter to blur the effect. EmbossMaskFilterThis section describes how to use another API --ColorFilter(Color filter), same as MaskFilter,Instead of directly using this class, we use three subclasses of this class:Color matrix C

The above mDriverFD is the open descriptor of the device file/dev/binder. If the device file is successfully opened, its value is greater than or equal to 0. Therefore, its return value is true. Return to the Process. start function, which calls the startViaZygote function for further operations. Step 3. Process. startViaZygote This function is defined in the frameworks/base/core/java/

,pixelsr2,pixelsg2,pixelsb2; Public Colorview (context context, AttributeSet attrs) { Super (context, attrs); Bitmap = Bitmapfactory.decoderesource (Context.getresources (), R.DRAWABLE.WW); width = Bitmap.getwidth (); Height = bitmap.getheight (); Oldpixels = new int[width*height]; Newpixels = new int[width*height]; Invalidate (); } @Override protected void OnDraw (canvas canvas) { Super.ondraw (canvas); //Get pixels Bitmap.getpixels (Oldpix

subjects is defined in the editor to hold the exam account information, please complete the code in section 5, and output the fourth account information in the array.Operation Result:1 Public classHelloWorld {2 Public Static voidMain (string[] args) {3 4 //defines a string array of length 5, saving test account information5String[] Subjects = ;6 7 //assign a value to an element in the array, re

[Android] Fragment source code analysis (3) Transactions In Fragment management, we have to talk about its transaction management. Its transaction management is very brilliant. First, we introduce a simple and common Fragment transaction management code snippet: FragmentTransaction ft = this.getSupportFragmentManager().beginTransaction(); ft.add(R.id.fragmentContainer, fragment, "tag

Building a Jenkins Project1. "New Job", fill in the Job name, select "Build Maven 2 or 3 project"->ok. The new success will go to "set", temporarily leave the default values, and then the settings later.2. Click "Build Now" to display "queued to build", and then in the "Build the process" to meet the # link, click on the link and select "Terminal Output", you will see a failed build record. Of course it will fail, because we have not added code and po

:" +topy+ "\ t ascenty:" + ascenty + "\ t descenty:" +Descenty+ "\ t bottomy:" +bottomy); } @Overrideprotected voidOndetachedfromwindow () {Super. Ondetachedfromwindow (); } Public voidCreateanimator () {if(Mvalueanimator = =NULL) {Mvalueanimator= Valueanimator.offloat (0.0f, 50.0f); Mvalueanimator.setduration (1000); Mvalueanimator.setinterpolator (Newbounceinterpolator ()); Mvalueanimator.addupdatelistener (NewAnimatorupdatelistener () {@Override Public voidonanimationupdate (valueanim

in 2.4. 2.6 Why do you want to put this normal.setempty () after the drag-and-drop has returned to its original position? What is the intention of it? Think carefully, found that the normal set of the upper left and right bottom four values, is satisfied with 2.4 of the two conditions will have a specific value. So there are two different kinds of rect for this normal. Top left and right bottom four values (0,0, the actual menu width 240DP, the actual measurement height of the menu) and scroll

) Progress bar Component(1) ProgressBar components: Horizontal progress barSetmax (): Set Total progressSetprogress (): Set Current progressSetsecondaryprogress (): Set second progress(2) Seekbar component: can drag horizontal progress barSetonseekbarchangelistener: Setting up drag-and-drop monitoring(3) Ratingbar components: Scoring progress barSetnumstars (): Set the total number of starsSetrating (): Set the number of stars selected Date Time c

1. click the button, specify the action and uri, and set the result code (ResultCode) to reach the Gallery of the default album on the mobile phone. The Code is as follows:1. public void onClick (View v ){2. // TODO Auto-generated method stub3. Intent intent = new Intent (Intent. ACTION_PICK,4. android. provider. MediaStore. Images. Media. EXTERNAL_CONTENT_URI); // start the Photo Gallery5. startActivityForResult (intent,

The existence of pictures in Android: 1: File form: Binary form exists with hard disk.2: The form of the stream: binary form exists in memory.The form of 3:bitmap Three different forms of distinction:File form and flow form: does not affect the size of the picture. In other words, if the image on your phone's SD card is read into memory in the form of streaming, the size in memory is the size of the origi

Source code analysis of the View rendering mechanism in Android 3. androidview So far, the measure process has been explained, and we will start learning the layout process today. But before learning the layout process, have you found that I changed the editor? haha, finally, I made up my mind to switch from the Html editor to the markdown editor. Here I use the word "resolution" because after all, the Htm

start off the/dev/binder device, Binder_release will be called, where the binder driver checks if the binder local object is dead, the procedure calls Binder_deferred_ Release execution. If death detects a Binder_work_dead_binder work item in Binder_thread_read. A death notice will be issued.2. Receive death notification: The client process will process the Br_dead_binder protocol in the Ipcthreadstate::executecommand function.Process three:1. Logoff Receive death notification: The proxy object

more.II. Dominator tree (dominating trees)Dominator tree is the Dominator tree between objects. If all paths from GC root to Y go through X, then we call x dominates Y, or x is y Dominator Dominator tree is calculated from the complex object graph in the system. From the Dominator tree of the mat, you can see the objects that occupy the most memory and the dominator of each object. We can also right-click immediate Dominator to see the Dominator of an object. It can sort all objects according t

Problem descriptionVideo capture using V4L2, capturing video data with a resolution of (4:3) and previewing the image on an Android device using the Canvas,drawbitmap methodAndroid Device resolution is 540x960 (9:16), so the full screen preview when the image is stretched, how to solve this problem?No train of thought Ah, which great God Guide!!Here is the code of the picture, the gods help to seePublicvoid

There is always a need to transfer data in Android development, especially between different activity. Here is a small description of the 3 kinds of activity you know about the jump way.The first type: static data transferDirectly on the upper part of the code: in the first activityIntent Intent = new Intent ();Intent.setclass (Mainactivity.this,secondactivity.class);Secondactivity.usrname = "Jack";secondac