reliable antivirus for android

If you're deciding whether a thread is the main line in Android? For this question, you might say that according to the thread's name, of course this solves the problem, but is it the most reliable? In case one day, Google will be the thread of the name of the other god horse things. Method revealed The following approach is the most reliable solution.

Reliable Image Compression for android First, let's take a look at the quality compression method: Private Bitmap compressImage (Bitmap image ){ ByteArrayOutputStream baos = new ByteArrayOutputStream (); Image. compress (Bitmap. CompressFormat. JPEG, 100, baos); // quality compression method. Here, 100 indicates no compression. Store the compressed data in baos. Int options = 100; While (baos. toByteArray

=Newopts.outwidth; inth =Newopts.outheight; //now the mainstream phone is more 800*480 resolution, so the height and width we set to floatHH = 800f;//set height to 800f here floatWW = 480f;//This sets the width to 480f//scaling ratio. Because it is a fixed scale, only one of the data with high or wide is calculated intbe =1;//be=1 indicates no scaling if(W > H w > WW) {//If the width is large, scale according to the fixed width sizebe = (int) (Newopts.outwidth/ww);

Android: a reliable method for obtaining the mac address of a device /*** Get the mac address of the device ** @ param ac * @ param callback * this method is called back after the mac address is obtained successfully */public static void getMacAddress (final Activity ac, final SimpleCallback callback) {final WifiManager wm = (WifiManager) ac. getSystemService (Service. WIFI_SERVICE); // If WIFI is enabled a

It is well known that in the development of Android, we often use Wifimanager to get MAC address to do device mapping, but there will be such problems, such as open WiFi access to address, do not open WiFi access address, just boot not get address, The NIC does not start to get the address. In summary the most reliable method or directly with BusyBox read the system file MAC address is more secure. publics

/** * Gets the MAC address of the device * * @param AC * @param callback * After successfully acquiring the MAC address, this method is recalled */public static void Getmacaddress (final Activity AC, Final Simplecallback callback) {final Wifimanager wm = (Wifimanager) AC. Getsystemservice (Service.wifi_servi (CE)//If WiFi is turned on after the boot, the MAC information can be obtained directly. return data immediately. Wifiinfo info = wm.getconnectioninfo (); if (info! = null info.getmacaddres

[] Encrypt (byte[] raw, byte[] clear) throws Exception {Secretkeyspec Skeyspec = new Secretkeyspec (Raw, "AES"); Cipher Cipher = cipher.getinstance ("AES"); Cipher.init (Cipher.encrypt_mode, Skeyspec, New Ivparameterspec (New byte[ Cipher.getblocksize ()]); byte[] encrypted = cipher.dofinal (clear); return encrypted;} private static byte[] Decrypt (byte[] raw, byte[] encrypted) throws Exception {Secretkeyspec Skeyspec = new Secretkeyspec (RA W, "AES"); Cipher Cipher = cipher.getinstance ("AES");

Android AES encryption tool (tested and compatible with all versions, reliable) import android.annotation.SuppressLint;import java.security.SecureRandom;import javax.crypto.Cipher;import javax.crypto.KeyGenerator;import javax.crypto.SecretKey;import javax.crypto.spec.IvParameterSpec;import javax.crypto.spec.SecretKeySpec;/** * * * Author：sunger */public class AESUtils {public static String encrypt(String

= Bitmapfactory.decodestream (ISBM, null, newopts); Newopts.injustdecodebounds = false; int w = newopts.outwidth; int h = newopts.outheight; //Now the mainstream phone is more 800*480 resolution, so the height and width we set to float hh = 800f; //Set height to 800f here float ww = 480f; //Set width to 480f here //Zoom ratio. Because it is a fixed scale, only one of the data with high or wide is calculated int be = 1; Be=1 indicates no scaling If (W > H w > ww) {//I