Programmer Group

brief introduction Frame layout or layer layout, from the upper left corner of the screen in accordance with the hierarchical layout, the control behind the cover of the control in front, the core is the overlay of views. Similar to layers, this idea of overlapping views can be seen everywhere in development. Important attri ...

This paper improves the code on the basis of "Android sends data to Windows PC through Bluetooth: Java implementation" (link address: https://blog.csdn.net/zhangphil/article/details/83146705). Or does it use Java implementation to send a picture on Android mobile phone to Windows PC through Bluetooth connection and ...

The onLaunch in App is triggered when the widget is initialized, and onLoad or onShow in Page is executed later, but the onLoad or onShow event in Page is executed when the user logs in onLaunch and the onLoad or onShow event in Page is executed while waiting for the return value. Original code segment app.js code slice. globa ...

1. Source Setting Path vendor\sprd\platform\frameworks\native\data\etc\appPowerSaveConfig.xml <?xml version='1.0' encoding='utf-8' standalone='yes' ?> <app_powersave_config> <package name="com.pp.assistant" optimize="1" alarm="0" wakelock="0" network="0" autolaunch="1" secondarylaunch="1" lockscreencleanup="1" ...

The following code mainly solves two problems: Solution to ViewPager Nested Vertical Recycler View Nested Horizontal Recycler View Sliding Horizontally to the End without ViewPager Sliding Horizontally Solution: Inherit Recycler View, rewrite dispatch TouchEvent, and determine whether to call getParent (). Request Disallow I ...

Preface In the previous article, we analyzed the process of connecting AP. When the wifi connection is completed at the bottom level, wifi Monitor will be notified of the event. wifi Monitor will send a message NETWORK_CONNECTION_EVENT when it hears the event.                                         Two Code Specific Flow   ...

Andriod applet - Simply making the wheel that controls the movement of characters in the game Explain Customizing your own view inherits from the View class Override onDraw() method When we see this control, it looks like that, as shown in the figure. Perfecting onDraw() Method Rewrite the OnTouch() method Update onDraw() ...

1. Benefits of GCD: GCD can be used for multi-core parallel operations Will automatically take advantage of more CPU kernels GCD automatically manages the lifecycle of threads (creating threads, scheduling tasks, destroying threads) Programmers need only tell the GCD what tasks they want to perform, and they don't need any thre ...

JNI exception handling Difference between JNI exception and JAVA exception handling JAVA has exception handling mechanism, but JNI does not. If exceptions are not captured in JAVA, subsequent code will not execute, and JNI will execute JAVA compile-time exceptions are those that declare an exception in the method display. The compiler requires ...

Timer overview Timer, as its name implies, is a timer for tasks that need to be delayed. The delay time may be 1s or 5 days. The general usage is as follows: TimerTask task = new TimerTask() { @Override public void run() { Log.d("test", "timer task test"); } } ...