android volume control app

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"Android App Development technology: User Interface" Custom view class design

attribute does not belong to the namespace, as follows:LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:custom="http://schemas.android.com/apk/res/com.example.customviews">com.example.customviews.charting.PieChart custom:showText="true" custom:labelPosition="left" />LinearLayout>Note : To avoid entering long strings of namespace names, the example above uses the xmlns directive, which can be assigned cu

An Android app memory cleanup and monitoring tool for developers

guarantee that the Cusor will eventually be released, if the cursor data volume is large, especially if there is blob information inside, should ensure that the cursor occupied memory is released in a timely manner, Instead of waiting for the GC to handle it. 5) Some details in the code Use 9path as much as possible Adapter to use Convertview All kinds of listening, broadcasting and so on, register the same time remember to c

"Android App Development technology: Media Development" Print

= BitmapFactory.decodeResource(getResources(), R.drawable.droids); photoPrinter.printBitmap("droids.jpg - test print", bitmap);}After the above method is called, the Android print interface will appear, allowing the user to select a printer and its printer options, the user can choose to print pictures and cancel the operation, when the printing begins, the system notification bar will display a print notification reminder.Two printed H

Top ten tips to quickly improve Android app development performance

advantage of, you will not be able to use other application resources efficiently by loading and resizing.  8 : Using Hierarchy Viewer Tools  Hierarchy Viewer tools can help you debug your application layout. It also provides valuable analysis information to understand how much time it takes to measure, render, and draw each view control within a layout. It is easy to solve the problem only if you find the root of the problem accurately.   9 : Using

Top ten tips to quickly improve Android app development performance

they can be loaded as efficiently as possible. This is especially important when we talk about graphical resources. If you add a large image resource that you can take advantage of, you will not be able to use other application resources efficiently by loading and resizing.8: Using the Hierarchy Viewer toolThe Hierarchy Viewer tool can help you debug your application layout. It also provides valuable analysis information to understand how much time it takes to measure, render, and draw each vie

How does the javascript-H5 page interact with the APP (iOS, Android?

I asked a similar question, but all the respondents were android. Is there any iOS client? Perform an activity and embed an H5 page in the app. How does one allow users to click the button on the H5 page to jump to another page of the APP? For example, you can click the recharge button on the H5 page to jump to the recharge page (... I asked a similar question, b

Use Kotlin to develop an elegant Android app

Code portal written in frontIn a previous article, we simply know the advantages of the new language Kotlin, but also contact some common grammar and its simple use, I believe you will have a strong interest in it, for the moment to understand that it is interested in it, ha haha. So, how do we apply this new language to Android? Today's article takes you through the development of Android apps using Kotlin

Android system Xiaomi/Samsung/Sony app startup icon unread message count (BadgeNumber) Dynamic reminder, androidbadgenumber

Android system Xiaomi/Samsung/Sony app startup icon unread message count (BadgeNumber) Dynamic reminder, androidbadgenumber On Android phones, for example, QQ, when there is unread message, we can see that there is a red circle in the upper right corner of the app startup icon, and the number of unread messages is dyn

How do I calculate the App startup time in Android?

different positioning for the application, so the application launch requirements are not the same. For example, some do ROM company, its built-in application start time must be very fast, so that the user's first feeling is fast, smooth; The internet company app is not very concerned about the startup speed, most of the Internet company's applications have a launch page, used to display ads or feature introduction, etc. The main interface is then en

9 Tips for Android app developers

Last year, the number of Android applications has exceeded iOS to become the world's largest ecosystem. However, among the millions of applications, some of them have a large download volume and make a lot of money; in addition, some applications have no one to worry about. Having many years of experience in program development, recently the development of the Android

Capture Android app packets with fiddler

limit function, through the network speed limit function, you can simulate some of the user's real environment. Fiddler provides the network speed limit plug-in, which we can download on his website: http://www.telerik.com/fiddler/add-onsClick "Download", after the download is complete, click Install, you need to restart the fiddler, after restarting Fiddler, you can see the Fiddler Toolbar tab, a more fiddlerscript option.For example, I need to delay a period of time before the request can be

Android App design Support library full use instance

more perfectly.One thing to be aware of is that Coordinatorlayout does not know the internal workings of Floatingactionbutton or appbarlayout, It simply provides an additional API in the form of Coordinator.behavior, which enables child view to better control touch events and gestures, and to declare dependencies between them, and receive callbacks through Ondependentviewchanged ().You can use Coordinatorlayout.defaultbehavior (your View.Behavior.cla

Android custom sliding switch control, suitable for all android Systems

We all know that a sliding switch is provided for Android 4.0 and later versions. Many people choose to use checkbox and put two images below. However, this operation only applies, and the effect is not very good, so I have customized the sliding switch wiperswitch control. paste it next. This is a really bad picture. You can change it to three pictures by yourself. Package COM. example. wiperswitch; impor

Android app development-data storage and interface presentation (i) (re-plate)

"memory_available" and getandroid:key= "Memory_sd_avail" style= "? android:attr/ Preferenceinformationstyle " android:title=" @string/memory_available " android:summary = "xx"/>Find "Memory_sd_avail" and getThis string is the SD card remaining capacity formatsize (Availableblocks * blockSize) + readOnly These two parameters multiply, Get the remaining capacity of the SD card in bytes availableblocks * blockSizeThe storage device is divided into chunks, each with a fixed sizeChunk Size * Nu

10 suggestions for efficient Android App development,

10 suggestions for efficient Android App development, If you want to make the most failed case on Google Play, the best secret is that the interface is extremely slow, consumes power, and consumes memory. Next, you will get negative comments from users, and your reputation will become bad. It is useless even if your applications are well designed and creative. Every problem that affects product efficiency,

Android Official Docs app components (activities)

explicit intent to initiate cross-app activity.For more information about Intent-filter, you can refer to the official documentation: "Intents and Intent Filters", or my translated blog: "Android official Docs app components (Intents and Intent Filters) ".Start activity (starting an activity)In order to start an activity, you can call the startActivity() method

Android Open source Git40 app Source

Http://www.itbbu.com/1039.html (Jamsmusicplayer) Great music player (new) (F8) Scheduling software (conversations) XMPP-based applications (bitocle) can view your GitHub project on your phone (Amphitheatre) Android TV app, data from Tmdb, not to see the effect of the operation, but feel that there are jakewharton participate in the project

Android imitation WeChat recording function, custom control design skills, android recording function

Android analog recording function, custom control design skills, android recording function Welcome to my Android Development Group [257053751] Recently, as a recording function is required (/James quietly revealed that don't tell Sweet Potato, that is, the new version of the OSC Client Oh), at first we plan to adopt t

Android App design Support library full use instance

, which enables child view to better control touch events and gestures, and to declare dependencies between them, and receive callbacks through Ondependentviewchanged ().You can use Coordinatorlayout.defaultbehavior (your View.Behavior.class) annotation or use app:layout_behavior= in the layout " Com.example.app. Your View$behavior property to define the default behavior of the view. The framework makes it possible for arbitrary view and coordinatorla

Android app-simple and music player with phone listening added

Android app-simple and beautiful music players add phone monitors In September 2nd, the simplified and beautiful music players started Stage 1 Stage 1 has completed the following functions: 1. automatically display the music list 2. Click the list to play the music. 3. Long press List dialog box 4. Pause music 5. Last music 6. Next music 7. automatically play the next song 8. Single Loo

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