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Android manual write smooth scrolling lyrics control, android ControlI am about to graduate. I have been busy with my graduation design and graduation thesis some time ago (egg pain is linked to chrysanthemum pain). I am working on an android music player, today, I specially extracted a feature to share this blog-the d

operations, SQL operations, list refreshes, etc.) consume resources using the background process to implement, can not occupy the UI thread, the UI thread is the main thread, the main thread is the key to keep the program smooth, should only operate those core UI operations, such as processing view properties and drawing; Minimize the wake-up mechanism. We often use broadcasts to receive messages and events that are expected to respond, but too much of the response exceeds our own requireme

Android performance optimization Manual This manual is suitable for developers with at least preliminary experience to check or review relevant knowledge. New users may not understand this manual.1. java code optimization 1.1 how Android executes code Dvm:. java->. class->.

search.。Suppose your browsing tool is not supported. Can fall into the garbage bin ...In 2014-1-1 the end of the day. Sent to the end of the version is to achieve the promise of millet!Unzip password, this domain name ...Can decompress, you come up to post son ...What a good friend. I'm not suggesting it this time.To play the reverse, you have to move the brain to reverse password.。Once hair now this forum has a post public this password immediately cancel sharing!!!Do not want to brain or do n

More than once, more than one person asked this question. I answered: No. However, we still need to record it. We may explain the cause from understanding some internal mechanisms of the system for application management. For Android systems, "processes" and "services" are included "." Processes "are running, and some are just left cached in the background ." "Service" is a non-interface, long-running application function, and will not be easily termi

To modify the app version number when the version iterationA manual operation 1. AndroidModify android/app/build.gradle the file'sversionNamedefaultConfig { ... versionName "2.0.0" ...}2.IOSOpen with Xcode PROJECT_NAME.xcodeproj , modify PROJECT_NAME/Info.plist theBundle versions string, shortTwo automatically read from the configuration file and write to the appropriate place 1.package.json config

), then click the Small black serrated icon in the lower right corner, such as:Switch to the "Overrides" tab, tick "User agent" and "Device Metrics" and select a different browser, different system option in the drop-down list under "User Agent", "Device metrics" The options show different resolutions depending on the selection.Note: If you do not have the appropriate "User Agent" option, you can select the bottom of the other, customize the Google Chrome browser User agent, and then customize t

When developing Android programs, whether you use urlconnection or httpclient operations, we often encounter timeout. If you check that the network is normal at this time, if you can access the target Web address through a manual browser, it is estimated that the following information is useful to you. The problem I encountered was that the access URL on some 2.x mobile phones was normal, but an error was r

Saveasync () instead of Save (). It will save the album asynchronously to the database, and the saved result will be recalled to the OnFinish () method.8. Multiple databasesIf your app requires multiple databases, Litepal fully supports it. You can create any number of databases at run time. For example:New Litepaldb ("Demo2", 1); Litepaldb.addclassname (Singer. class . GetName ()); Litepaldb.addclassname (Album. class . GetName ()); Litepaldb.addclassname (Song. class . GetName ()); Litepal.us

supported, you can drop it in the trash ...In 2014-1-1 the end of the festival, sent to the end of the edition is to achieve the promise of millet!Unzip the password, the domain name ...Can decompress, you come up to post son ...What good friend, this time I do not promptTo play the reverse, you have to move the brain to reverse the password to ...Once found in this forum has a post public this password immediately cancel sharing!!!Do not want to brain or do not like you to stay aside ...Link:

① only put "System\bin", permission is 0755, "system\xbin" must not have su.② only put "System\bin", permission is 6755, "system\xbin" must not have su.③ only put "System\xbin", permission is 0755, "system\bin" must not have su.④ only put "System\xbin", permission is 6755, "system\bin" must not have su.⑤ put "System\bin", the permission is 0755, and put "System\xbin", the permission is 0755.⑥ put "System\bin", the permission is 6755, and put "System\xbin", the permission is 0755.⑦ put "System\bi

Android SlideMenu source code analysis and user manual, androidslidemenuAndroid SlideMenu source code analysis and User ManualLet's first look at the usage:FirstPublic class MainActivity extends SlidingFragmentActivityInherit from SlidingFragmentActivity, where slidemenu and other required data are created.Add in OncreatePrivate void init_sm (){Sm = getSlidingMenu (); // obtain the menuSm. setMode (SlidingM

Android manual density (dpi) modification method, androiddensitydpi In the Android system, the default density is set based on the screen resolution range, which is 320 (xhdpi). You can also manually modify the density. Modify the ro. sf. LCD _density VALUE IN system. prop; For example, ro. sf. LCD _density = 480; We can use the adb command to query this attribut

In Android development, there is often a need to hide the keyboard after a certain operation, so that the soft keyboard in Android is not displayed. Today, share with you how to use code to implement the hidden, displayed operation of the Android software disk. 1, method One (if the input method has been shown on the window, then hidden, and vice versa)

very long, the debugging section is affixed with a very specific post that explains Android Studio Code Debugging Daquan Shortcut key Lookup table Narrative of functional description keymap corresponding name Mac Win Linux Tips on how to resolve errors Show Intention Actions OPTION + Enter ALT + ENTER As Configuration Interface Preferences Command

saving8}Catch(dbexception e) {9}6. Delete operation1 Try {2Db.delete (person.class);//the method is to delete all the data in the table3Db.deletebyid (person.class, 12);//This method is mainly based on the table's primary key (ID) for a single record deletion4Db.delete (person.class, Wherebuilder.b ("Age", ">", "20"));//Delete operation based on the conditions of the WHERE statement5listclass). Expr ("Age > 20"). FindAll ();6Db.delete (FINDALL);//Delete one or more data from a table based on th