Android

Based on the Android-related devices as embedded devices, we should pay more attention to the efficiency when writing app application, and be limited by the battery charge. This leads to a number of considerations and limited processing capabilities

First of all, Baidu installed 9 million simulator, no longer detailed. Open the 9 million Android simulator. Need to be registered users can use, if you have registered before, please login directly, not registered, you need

This article describes two ways for Android studio to import zxing, for informational purposes only. 1. Direct Complie Import 1.1 Build.gradle Direct Complie of items that need to be scanned using zxing for two-dimensional code compile '

In the last study, the use of the original content provider Contact,contact has a multi-level mapping relationship, more complex, not as a good choice for small examples, in this study, we will learn how to create content Provider, and through the

I'm new in Android !!This. Finish ()In activity only stop and destroy this activity, application still staying background (check by hold Home button)I used:System. Exit (0 );But it still appear there! That's how Android works. the user/developer is

In Android, several commonly used Bluetooth profiles are: spp (Serial Port profile), a2dp (Advanced Audio distribution profile), and avrcp (audio/video remote control profile), hid (Human Interface Device profile), HFP (hands-free profile ). Among

The video recording function is coming soon. In AndroidSDKThere are related classes: Android. Media. mediarecorder, of course, because the simulator does not provide the necessary hardware facilities, it cannot be implemented during the learning

APK decompilation and packaging Signature I. JDK installation and environment Configuration1. jdk1.6: http://download.java.net/jdk6/Jdk-6u17-windows-i586.exe2. Install it by default.3. Set Environment VariablesXP system: My computer-> properties->

Public static final string broadcast_package_removed Allows an application to send a notification that the application is deleted. Constant Value: "android. Permission. broadcast_package_removed" Public static final string call_phone Allow an

I. Prepare Software 1. VMware. workstation. v8.0.0.471780 2. ubuntu-10.04.4-alternate-amd64.iso 3. jdk-6u32-linux-x64.bin Ii. installation and configuration 1. Install VMware. workstation. v8.0.0.471780 and create a virtual machine Steps: 1) Open

Linux function library Introduction The function library can be seen as a collection of functions written in advance. It can be separated from the main function to increase the reusability of program development. In Linux, function libraries can be

If you want to add a ringtone to the Android system, you can use the ADB push method. However, if you want to modify the system multiple times, it will be too difficult to push it in. Here is a simple method, it is to compile the ringtone into the

Package COM. example. demofile; import Java. io. bufferedreader; import Java. io. file; import Java. io. fileinputstream; import Java. io. ioexception; import Java. io. inputstreamreader; import Java. io. randomaccessfile; import android. app.

This article translated from: http://developer.android.com/guide/topics/graphics/opengl.html The Android system includes OpenGL (Open Graphics Library), which provides high-performance support for 2D and 3D graphics, especially OpenGL ES APIs.

This article translated from: http://developer.android.com/guide/topics/text/copy-paste.html Android provides a powerful clipboard-based framework for copying and pasting. It supports simple and complex data types, including text strings, complex

Html code viewer, code ViewerHtml code Viewer Effect:   Analysis: 1. permissions required to connect to the network 2. Write the default protocol and default ports http and 80 3. Put the network access code in AsyncTask. 4. Two methods for

Solve the problem caused by the Android pop-up keyboard. The android pop-up keyboard 1. After the Activity is started, EditText directly obtains the focus, and the soft keyboard will pop up automatically. This experience is not very good. Therefore,

Display and hide Android passwords and hide android passwords Many applications use the function of displaying and hiding passwords. The previous project did not have this function requirement, nor did it specifically study this. This feature has

The path to kotlin growth and the path to kotlin Learning Preface: Starting from Kotlin, that is, my decision to start writing a technical blog today, I have a poor literary talent. Thank you for your understanding and guidance. This article is my

Android N (API level 24.) discards Html. fromHtml (String), and adds an api discard warning to ios From API level 24, fromHtml (String) is discarded and replaced by fromHtml (String source, int flags ). Flags: FROM_HTML_MODE_COMPACT: Use a