android trace viewer

There have been a lot of articles on how the Hierarchy Viewer is used, and here is a step-by-step demonstration of how to use it, Ddna's "Android Tool" ignored UI Viewer: Hierarchy Viewer and Zhang Xingye's Android UI Optimization-The use of the Hierarchyviewer tool is great

Android network_network Image Viewer, Xml Java Package com. itheima. sourcelook; import java. io. inputStream; import java.net. httpURLConnection; import java.net. URL; import java.net. URLConnection; import android. OS. bundle; import android. OS. handler; import android. O

Android Studio Run with--STACKTRACE option to get the stack trace. Run with--info or--debu Hint Information It actually lets you look at more log information. Find the root of your project, such as your project is MyApplication, enter the directory under DOS command to execute If the above command doesn't work, use the following command to try Can see a lot of wron

Both are graphical tools. Hierarchy Viewer usage analysisProgram. Open toos/hierachyviewer. bat, and the left side shows the UI components of the programs in the virtual machine in a tree structure. Each node represents a button, textview, and so on. Click the node and you will see the node in the window on the right that is displayed on the simulator screen and the attributes of the UI. Trace

[Android-007] [network image Viewer] Network Image Viewer Determine the image URL to send an http request URL url = new URL (address); // gets the connection object and does not establish a connection HttpURLConnection conn = (HttpURLConnection) url. openConnection (); // set connection and read timeout conn. setConnectTimeout (5000); conn. setReadTimeout (5000)

The Code is as follows:[Java]Package xiaogang. enif. utils;/*** The Class LogUtils for log printing, which help us* Easy to trace our codes or logics in the project.** @ Author zhao xiaogang* @ Time 2011.4.12*/Public class LogUtils {Private final static int VERBOSE = 0;Private final static int DEBUG = 1;Private final static int INFO = 2;Private final static int WARN = 3;Private final static int ERROR = 4;Private final static int DEFAULT_LEVEL =-1;Priv

,r.drawable.pic1, R.drawable.pic2,r.drawable.pic3,r.drawable.pic4,r.drawable.pic5,r.drawable.pic6,r.drawable.pic7, R.DRAWABLE.PIC8,R.DRAWABLE.PIC9}; @Override public void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (R.layout.main);//Set Layout iv= (ImageView) Findviewbyid (R.ID.IMAGEVIEW01);//Get ImageView references Iv.setima Geresource (R.DRAWABLE.PIC0);//Set image button pre_btn= (button) Findviewbyid (r.id.button01);//Get a reference to

============ Problem Description ============E/trace (28187): Error opening Trace file:no such file or directory (2)This error has occurred in Eclipse today,I only know that there is a trace command in the Linux system that tracks the execution that occurs.Do not know how to solve, please expert guidance?============ Solution 1============If this is the case when

implement this topic interface functionalityHere, I omitted the other code in the project, leaving only a frame structure. So our observer class is created.3. Create the Observer interface to define the functions that the viewer will implement.4. Create our Observer class:Realizing our well-defined observer interface becomes an observer.At this point, the framework of the entire observer pattern is built, so long as the business logic we want is impl

we can see, when setting up Adapter, a adapterdatasetobserver is constructed, that is, the observer, and finally, the Observer is registered to Adapter.Here we know that when the data of the ListView changes, call Adapter's Notifydatasetchanged () method, which again calls the Datasetobservable notifychanged () method, This method calls the OnChanged () method of all observers (Adapterdatasetobserver), and in the OnChanged () method calls the ListView re-layout method so that the ListView refre

notified through the Getcontentresolver (). Notifychange () method.The registration and notification here is obviously not in a process, for example, in a application through the CONTENTRESOLVER registered observer, in the B application through the Contentresolver notify the Observer, The contentresolver here is not a Contentresolver object in a, and is not able to be notified by a direct call. This is actually the event registration and notification through inter-process calls. The registratio

Address: http://apistore.baidu.com/apiworks/servicedetail/113.html Second, the required technology Network requests JSON parsing Third, actual combat projects:3.1 Front-desk interface: It's easy to put a code on it. Obtain ID information by entering the ID number.3.2 Background Control initialization:3.3 Network Requests1. Use the Network debugging tool to find that the JSON returns the following structure:2. Using object-oriented thinking, we create the corre

, new myobserver (new Handler ())); } Private class Myobserver extends contentobserver { PublicMyobserver (Handler Handler) {//handler is a message processor Super(handler); } @OverridePublic void OnChange (boolean selfchange) { //TODO auto-generated Method Stub System.out.println ("Haha, the contents of the database changed!!! "); Super. OnChange (Selfchange); } }}and modify the code in the Persondbprovider.java: Publicuri insert (URI uri, conten

NewIllegalArgumentException ("The observer is null."); } synchronized (mobservers) {if(Mobservers.contains (Observer)) {Throw NewIllegalStateException ("Observer"+ Observer +"is already registered."); } MOBSERVERS.ADD (Observer); } } /** * Removes a previously registered observer. The observer must not being null and it * must already has been registered. * @param observer The Observer to unregister * @throws ILLEGALARGUMENTEXCEPTION The Observer is NULL * @throws ILL Egalstate