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Start to learn about NDK development. First, start with the output of the Hello World instance. NDK development steps: 1. Declare the native method in the Java File Public class TestActivity extends Activity {static {System. loadLibrary ("my-ndk");} // declare the native method of the jni layer and use the native keyword public native String stringFromJNI (); @ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); TextView tvText = new TextView (this

defined as private, or JS cannot be called. 2. Locally call JS Methods This is easier--simply use the following method. Assume that there is a method called androidFunction () in JS () mWebview.loadUrl("javascript：androidFunction()"); Ii. Message Processing 1. An Uncaught ReferenceError occurs :... This error does not crash. It means that the method called is not found when the local method calls JS. What should we do if the method we call does not exist?

window is implemented using PopupWindow, and then replace the image of the plus sign with the multiplication number. The Code is as follows: ButtomMenuActivity. java: Copy codeThe Code is as follows: package com. shamoo. qqbuttommenu; Import com. shamoo. qqbuttommenu. R; Import android. app. TabActivity; Import android. content. Context; Import android. content. Intent; Import android. graphics. Color; Imp

Before using NDK for Android projects, you must download NDK, download and install Cygwin (for simulating Linux environments), and download CDT (Eclipse C/C ++ development plug-in ), you also need to configure the compiler, environment variable... Shamoo checked the information on the Internet and found a super fast way to configure NDK. Step 1: Download the Android Development Tool ADT (short for Android Development Tool) from the Android official w

lite version. Download Link interview: http://developer.android.com/tools/sdk/ndk/index.htmlEclipse Configuration:1.open Eclipse, point window->preferences->android->ndk, set the NDK path, for example Shamoo is E:\android-ndk-r9c2.Create a new Android project, right-click on the Android Tools->add Native support ..., and then give us a name for the. So file, for example: My-ndk3.at this time the project will be more than one Jni folder, JNI under the

NDK from the Android official website. Note: Cygwin is integrated with NDK Versions later than r7 and is still very lite. See: http://developer.android.com/tools/sdk/ndk/index.html for download links Eclipse Configuration:1. Open Eclipse, click Window-> Preferences-> Android-> NDK, set the NDK path, for example, Shamoo is E: \ android-ndk-r9c2. Create an Android project, right-click Android Tools> Add Native Support... on the project, and name the.

(R. layout. main); // load the XML file}} Public class MyActivity extends Activity {Private MyApplication application; @ OverridePublic void onCreate (Bundle savedInstanceState ){Super. onCreate (savedInstanceState );Application = (MyApplication) this. getApplicationContext ();System. out. println ("Shared data" + application. getShareData ());SetContentView (R. layout. main); // load the XML file}} After that, you need to make some modifications in the AndroidManifest. xml file to inform our

I read an Android intern job application written by a senior student who is going to be a senior student a few days ago and learned some questions about Android, the four components of Android (Activity, Service, Content Provider, BroadcastReceiver broadcast receiver) are the easiest questions to answer. In addition to coping with interviews, four components are required for Android Developers. As a result, Shamoo collected a lot of information on the

Java decompilation tool is particularly powerful, almost 100% of the source code can be seen. The machine code compiled by C can only be decompiled, and the assembly code is very ugly. As we all know, this protects the logic implementation of the program and is used in many commercial projects. Disadvantages of NDK: 1. NDK is implemented locally and has certain requirements on the platform. 2. Unlike sdks, NDK does not have a variety of convenient UI and service-related class libraries, such a

Android official website. Note: Cygwin is integrated with NDK Versions later than r7 and is still very lite. See: http://developer.android.com/tools/sdk/ndk/index.html for download links Eclipse Configuration:1. Open Eclipse, click Window-> Preferences-> Android-> NDK, set the NDK path, for example, Shamoo is E: \ android-ndk-r9c2. Create an Android project, right-click Android Tools> Add Native Support... on the project, and name the. so file, for

on the Android website, note: The NDK version number has been integrated with Cygwin after R7 and is a very lite version. Download Link interview: http://developer.android.com/tools/sdk/ndk/index.html Eclipse configuration: 1. Open Eclipse, point window->preferences->android->ndk, Set the NDK path. For example, Shamoo is E:\android-ndk-r9c 2. 3. This time project will have one more JNI directory. There are android.mk and my-