android xml tools context

The first partIn Android development, when writing layout code, the IDE can see the layout Preview. However, some effects must be run before they can be seen, like this: TextView does not set any characters in the XML, but instead sets the text in the activity. So in order to preview the effect in the IDE, you have to set the Android:text property for the TextView control in the

Android Context is completely parsed, and you do not know the details of Context. In the previous articles, I wrote a trilogy of the ListView series. Although it can be said that it is an absolute essence of the content, many of my friends said they could not understand it. Well, this series not only gave everyone a hard time, but also gave me a hard time. I spe

menu item　　// AdapterContextMenuInfo info = (AdapterContextMenuInfo) item. getMenuInfo ();　　// Log. I ("braincol", String. valueOf (info. id ));　　Switch (item. getItemId ()){　　CaseITEM1:　　// Add the processing code here　　Break;　　　　　　CaseITEM2:　　// Add the processing code hereBreak;　　　　　　CaseITEM3:　　// Add the processing code hereBreak;　　}　　Returntrue;　　}　　　　} Main. xml layout file:　　　　　　Android: id = "@ +

This article is original and must be reproduced with the following source:Http://blog.csdn.net/qinjuning This article is the Reading Notes generated after I read chapter 7th of "android Kernel Analysis". I recommend this book to books that want to know about the android framework. Hello everyone, today we will introduce to you the most familiar and unfamiliar friend in Application Development -----

Edito class of the Sharedpreferencesimpl object, manipulate the data public final class Editorimpl implements Editor { private Final map Basically get the Sharedpreferences object is so. Iv. getting the application context at any location1. Get the application context at any locationwhen accessing resources in an Android program, you need to prov

Finally, click Save to save the content to the file. Click Show to read and display the content from the file. Main. xml Activity Code Package cn.com. file; Others are default. You can use the File explorer tool carried by ADT to view the file storage path. How can we call out the file explorer tool? We can see file explorer under windows -- showview -- others-android. Here is one of mine. There is

Tools: context = ". MainActivity, I have never understood the "tools: context =". MainActivity "sentence. I checked it today and found it like this: Tools: context = "activity name" is not packaged into the APK. Only the Layout

Android Development Review notes-Menu menu component (option Menu, context menu, sub Menu), Android menu Menus are one of the most common elements in the user interface and are frequently used. In Android, menus are divided into three types: OptionsMenu and ContextMenu) and SubMenu ). There are two menu implementation

SharedPreferencesUtil {private static final String TAG = "PZTuan.SharePreferencesUtil";private static final String SHAREDPREFERENCE_NAME = "sharedpreferences_pztuan";private static SharedPreferencesUtil mInstance;private static SharedPreferences mSharedPreferences;private static SharedPreferences.Editor mEditor;public synchronized static SharedPreferencesUtil getInstance(Context context) {if (mInstance ==

Android Development Series (19th): Use ContextMenu to create context menus In the previous article, we introduced the options for creating a context menu. Here we will introduce how to create a context menu. The context menu is to press a piece of text and then display the c

In the Android system, the ContextMenu (context menu) is similar to the right-click pop-up menu in the PC. When a view is registered to a context menu, a "Long press" action on the object is executed, A floating menu that provides relevant functions will appear. Context menu can be registered to any view object. Howeve

What does context in java and android mean? what does context in java and android mean. It is Context. What is this? if an error occurs, the Context appears so frequently in Java, but the Chinese translation "

The context plays a very important role in the development of Android apps, Like starting an activity. You need to use the Context.startactivity method to convert an XML file to a view object, and you need to use the context object, so to speak, if you leave this class, Android