Init is one of the most indispensable programs in Linux system operation. Init process, which is a user-level process initiated by the kernel. The kernel will find it in several places in the past that used Init, and its correct location (for Linux systems) is/sbin/init. If the kernel cannot find Init, it will try to run/bin/sh, and if it fails, the boot of the system will fail.Linux 7 RunLevel (0: shutdown, shutdown mode,
Preface:
What is APK?"Application package file"
Simply put, the compiled files and resource files are packaged together in a zip container. Let's just get to know it.
It usually contains the following directories and files:
1. META-INF \ store the signature key;
2. Res \ stores the resource files not compiled into resources. ARSC;
3. Lib \ stores the compilation code of specific software and shares library
Android decompile apk (1), android decompile apkWhy decompilation:
As a personal developer, sometimes you can see exquisite UI effects and interesting functions. Do you have the urge to refer to learning. Decompiling the android apk
Reprint Please specify source: http://blog.csdn.net/yyh352091626/article/details/50533137Android's silent installation seems like an interesting and tempting thing to do, but, in common practice, it seems difficult to implement a silent installation if the phone does not have root privileges, because Android does not provide a intent call to display, typically installing the
Android's silent installation seems like an interesting and tempting thing to do, but in common practice it seems difficult to install silently if the phone does not have root privileges, because Android does not provide the intent call that is displayed, typically by installing APK in the following ways:
Intent Intent = new Intent (intent.action_view);
In Android, if you want to use System-restricted permissions (such as android.permission.write_secure_settings), we need to install the program to /system/ Under the app/. The following is an example of SecureSetting.apk, which demonstrates this operation. Need to prepare a mobile phone with Root access. 1. Connect mobile phones and computers via USB. 2, use adb
What is the difference between the root permission and the USB adb permission of android apk? androidapkUSB adb permission means that when adb connects to the mobile phone, the permission of the daemon adbd in the mobile phone is root, so that its sub-process also has root p
This article describes how to use the root permission to silently install the APK, how to automatically select normal installation or silent installation, and how to expand PackageUtils to delete the APK silently.
1. Silent Installation and call with root permission
Directly
Share runtime (use Quick Deploy):
Click Save above to
The next time the application is built for debugging, the Assembly will be installed directly on the device (if it is not installed) and a smaller application package (excluding assemblies) will be installed on the device. This will shorten the time required to change the application and run the tests. By deploying shared runtimes and shared platforms for the first time, we can quickly and easily deploy new versions whenever we make
Newton's Iterative method was used to find the root of the equation near 1.5:2x^3-4x^2+3x-6=0.Solution: Newton's Iterative method is also called Newton tangent method. Setf =2x^3-4x^2+3x-6,F1 is the derivative of the equation, thef1 = 6x^2-8x+3, and f1= (f (x0) -0)/(X0-X1),
Using Newton's Iterative method to find the root of the following equation near 1.5:2x^3-4x^2+3x-6=0
As for the Newton iterative method, in the course of computational methods, the basic formula is:
xn+1=xn-f (Xn)/F *(Xn) xn+1 is the n+1
using zipalign.exe (in the android-sdk-windows \ tools directory) to optimize it:Copy codeAs shown above, zipalign can align uncompressed data in the apk file on the 4-byte boundary (4 bytes are a good value), so that the android system can use mmap () (please check the purpose of this function) function reading files can achieve high performance in reading reso
Blogging is a pleasure, if you have to write, share with others, is another kind of happiness, if you have a stage show, blog Park is such a stage.This article is an essential knowledge of Android developers, which I have specially organized and summarized for you, not perfect, but useful.1. The meaning of the signatureIn order to guarantee the legal ID of each application developer, to prevent some of the
APKEclipse can directly export the final APK with a signature, which is very convenient and recommended. The steps are as follows:Step 1: export.Step 2: Create the keystore, enter the location and password for the keystore export, and remember the password. It will be used in the next use existing keystore.Step 3: Enter the keystore information, password of some APK
The sum of factorialEnter N, calculate s=1! +2! +3! + ... +n! The last 6 bits (excluding the leading 0). N≤10 6, n! SaidThe product of the first n positive integers.Sample input:10Sample output:Package Demo;import Java.util.scanner;public class Demo02 {public static void main (string[] args) {Scanner in=new Scanner ( s
Blogging is a pleasure, if you have to write, share with others, is another kind of happiness, if you have a stage show, blog Park is such a stage.This article is an essential knowledge of Android developers, which I have specially organized and summarized for you, not perfect, but useful.1. The meaning of the signatureIn order to guarantee the legal ID of each application developer, to prevent some of the
the uncompressed data in the APK file to be aligned on a 4-byte boundary (4 bytes is a well-performing value) so that the Android system can read the file using the Mmap () function (see the purpose of the function itself) to get higher performance on read resources ,Ps:1. Alignment on a 4-byte boundary means that, in general, the compiler bar 4 bytes are read a
1. The app is installed under/mnt/sdcard by default. If your SD card is not mounted, the system will prompt you to request an SD card or damage SD card, so now you can go to this/mnt/sdcard or/sdcard (the two are in the same directory) and will not find any content.
2. Now we need to mount a partition in the sd partition to/mnt/sdcard. In this case, you can download the apk from the Internet and install it
Dex type of file, This re-packaging optimizes the various function tables and variable tables inside the class file. The Dex file is a class file optimized by the Android packaging tool, so loading this special class file requires a special ClassLoader, so the Dexclassloader loading process is available in Android : 1: Get the installation directory fo
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