Discover list of all android versions, include the articles, news, trends, analysis and practical advice about list of all android versions on alibabacloud.com
Android n the language list before and N has changed a lot, into the language list, you can see 1, the above box is the system user selected language (Android n users can choose several languages, ranked first is the system language), the following box is a language to add the button, After clicking, you can add the la
Previous article, [Android plugin Development Atlas first experience] (http://blog.csdn.net/sbsujjbcy/article/details/47446733), a simple introduction to the entire process of using Atlas, but if you have not practiced the estimate is still confused, starting from this article, Slowly cut into the details. The topic of this article is to generate a list of plugin information.Careful you may find that in the
First, Simpleadapter
Simpleadapter is a simple adapter that maps static data to a defined view in an XML file. You can specify a list of data support such as the ArrayList composition map. Each entry in the ArrayList corresponds to a row in the list. Maps contains each row of data. You can specify a view XML file that defines the rows to be displayed, mapped to the specified view by keyword.
Constructors
This article describes a method for Androdi to get a list of mobile apps, such as acquiring software properties, size and application paths to Android apps, app names, and so on, to get a list of all installed Android apps, including those that have been uninstalled, but tha
, the original observable is split into a observable collection, the original observable emitted data is grouped by key, each observable launch a different set of data
Mapmapping, by applying a function transform to each item of the sequence observable the emitted data, essentially executing a function on each item in the sequence, the parameter of the function is the data item
ScanScan, continuously apply a function to each item of the data sequence, and then emit the result consecutive
1. See the source code must understand the Android data structure. In the Init source code, the doubly linked list ListNode uses a lot, it only prev and next two pointers, no data members. This is the same as the Linux kernel List_head, which shows that Android is deeply affected by the Linux kernel. Originally to analyze this ListNode data structure.One of the t
The list of default project files created with Eclipse is as follows:The SRC:SRC directory is the source program directory for Android projects, which is used to store the source code of the Java projectThe Gen:gen directory holds all automatically generated files, and the most critical files in this directory are R.java. This file is automatically generated when
1. Look at the source code must understand the Android data structure. In the Init source code, the doubly linked list ListNode uses very much, it only has prev and next two pointers, no matter what data members. This is the same as the Linux kernel List_head, which shows that Android is deeply affected by the Linux kernel. Originally to analyze this ListNode dat
after a phone lock screenAndroid.permission.WAKE_LOCKAllow applications to write to network GPRS access point settingsName= "Android.permission.WRITE_APN_SETTINGSAllows an application to write to the user's schedule, but not readableAndroid.permission.WRITE_CALENDARAllow applications to write call logsAndroid.permission.WRITE_CALL_LOGAllow applications to write to contacts, but not readableAndroid.permission.WRITE_CONTACTSAllow applications to write to external storage, such as SD card write fi
Reprint please indicate source: http://blog.csdn.net/xx326664162/article/details/50563122 article from: Shire's BlogYou can also check my other similar articles, will also let you have a certain receipt!The cause of this problem may be a variety of, the following two methods, I personally tested after the use, if not, please tell me in the comments, I will help you to analyze the solution as soon as possible. On the left side of the article category, the And
Description of the UIFor an Android application, all user interface elements are built by View and ViewGroup objects. Viewis an object that draws on the screen to interact with the user. And for ViewGroup that, it's a View layout container for other and ViewGroup objects!AndroidProvides us with a View ViewGroup collection of two subclasses that provide commonly used input controls (such as buttons, pictures
In Android development, you will inevitably encounter a lot of data loaded into the ListView to display,Then one of the most important data-passing bridges adapter adapters are commonly used, as the market needsFind the content in the ListView ' entry is getting more and more this requires programmers to customize the adapter,And the key is the adapter optimization problem, the adapter is not optimized often will cause oom(memory overflow) or sliding
of the most classic figure you can collect, do not understand when take to see, deepen understanding, In fact, there is a component called recycler in Android, incidentally listed with recycler related to Google has been done by the N more optimized things such as: Abslistview.recyclerlistener, Viewdebug.recyclertracetype and so on, to understand the friends themselves check, not difficult to understand, the following figure is ListView load data wor
The project implements the following functions :Get Mobile album, click on each album to enter the picture list of the album interface, in the Picture list interface can achieve multiple selection of pictures, and then into the selected image interface, in this interface can achieve the selected image upload and other functions.the biggest feature of the project:1, to obtain a
1ListView lv=(ListView) Findviewbyid (R.id.listview);2ListNewArraylist();3 //getting data from an array resource4String[] Data=getresources (). Getstringarray (R.array.haha);5 for(inti=0;i){6MapNewHashmap();7Map.put ("img", r.drawable.b);8Map.put ("TXT", Data[i]);9 list.add (map);Ten } One //parameter list: Context object, list data, list item la
class that inherits Baseadapter, primarily controls the click events of the ListView, and provides an abstract way to get convertview.Public abstract class TreelistviewadapterFour, Treehelper classProvides a number of static methods that help us:Convertdata2node: Converts the incoming bean into node, and compares them by 22 to derive their parent-child relationship.Getrootnodes: Traverse the list, filter out the root node, and return to the Father li
(textWatcher);3.textview display different colors, in fact, there are many ways to achieve, the most stupid is to use two or three textview to achieve the highlight color next to each other, however this is not scientific, we use stringformatutil such a tool class to achieve the highlight color.StringFormatUtil spanStr3 = new //分别是上下文,原串,key,高亮颜色。StringFormatUtil(mContext, data.name, mkey, R.color.blue).fillColor(); customerHolder.tvName.setText(spanStr3.getResult());4.
When we develop the app, we often encounter the need for multilevel list display. The Android Native SDK does not have a level 3 level 4 or more list control at all.So we're going to implement a treelistview-like control, and here's an effect chart from my project that supports multilevel list extensions.
There are
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