android volume control app

App-Activity-PersistentState1.Demo description and demo This demo uses sharedpreference to save the UI status, mainly to demonstrate the simple use of sharedpreference, And the UI status is generally saved in onsaveinstancestate. Through this demo, we can learn: Simple use of sharedpreference Introduction to preferencemanage Use of scrollview Introduction to horizontalscrollview As follows: 2. Video Explanation and HD video download Http://www

the state of the application to return, I chose to ignore the unavailable application, should be completely off, not in the background of the application.Again, this method is Android5.0 because of security problems, that is, android5.0 above version cannot use this method. So I saw in the App Store a while ago that the comments were Android5.0 with this no effect. Now I don't know, I do not have to study it. (Every time I say idle and then do basica

, from the Wxentryactivity class OnCreate method Getintent ObjectThis is the end of the app entry.-------------------I'm a split line------------------------Then the web-side, due to the limitations of webview, such as Weibo, such as the use of this control, so can only share the Web page, and then into the app.The principle is as follows:Click to open four words, the execution of a JS, within the time limi

Android animationdrawable animation and app launch, load boot page (screen)Animationdrawable is an Android frame animation that can simply be thought of as a animationdrawable to load a series of resource images as "movies". Now, in some apps, it's often necessary to load a few boot pages (posters, decorations, sponsored ads, etc.) before the

Author: Wallace Wang Email: wallage@qq.com Disclaimer: This article is my original work and is only for learning and use. Reprinted address: Http://wallage.blog.163.com/blog/static/1738962420108915833584/ : Book. Java file: Package com. Book; import Android. App. activity; Import Android. OS. Bundle; Import Android. ut

The last week is busy, busy, written articles are two, in this hope we forgive. This week, suddenly idle down, there is time, on the reconstruction of the code, beat the drum avantgarde technology, precipitate precipitation. So, share what we've been studying for the next few days today.Mobile Internet is the main focus of user experience and product rapid iteration, through user feedback and user behavior tracking timely adjustment product direction, so as to maintain vitality and creativity. S

(savedInstanceState); if (savedInstanceState != null) { needSaveDraft = savedInstanceState.getBoolean("NEED_SAVE_DRAFT" ); } else { // TODO 解析Intent对象传入的参数或者Action // Intent intent = getIntent(); // intent.getBundleExtra(""); } }To reduce the burden on developers, most system controls in Android implement the logic of State caching. Before the O

); return true; }} The test program is still normal on the poor tablet, and then runs on the Qa tablet. This article will always show "but" Jun, as you may come. Only a part of the image is displayed. Poor Dao looked at his own fake tablet and Qa's cool and cool Nexus 7. Is Android also engaged in brand discrimination. Noble ones do not look like fake cards? Isn't the hope country Where Android is

drawing process of friends, please refer to my article "you learn the framework of the Celtics brother" activity interface display full resolution.SummarizeUntil now, we finally know why the Jane book Android client is stuck, and we summarize Due to the multi-tab design, resulting in a serious interface layout, not the system layout, there are more than 14 layers Due to unreasonable interface, the partial layout is redrawn seriously

Stringbyevaluatingjavascriptfromstring method itself directly returns the execution result of a nsstring type, so this is obviously a synchronous call.So JS call native is asynchronous, native call JS is synchronous. When dealing with some logic, it is unavoidable to consider this feature.方法。Android:java and JavaScript call each otherBefore Android 4.2 can be used to addJavascriptInterface inject native Java methods to JavaScript calls, this scheme h

As Windows10 released, Microsoft launched the new Android simulator, which is said to run faster than Google's own simulator! It's worth saying that if you have a Microsoft account you can experience it for 30 days for free. While Windows 10 was released, Microsoft also had a lot of other work to do, such as the new Android simulator "Visual Studio Emulator for Andro