首先要获得root 权限 :
PowerManager pManager=(PowerManager) MyApplication.sSharedInstance.getSystemService(Context.POWER_SERVICE); pManager.reboot("");获取ramdom的值 :
public static int getRandomInt(int min, int max) { return (int)(min+Math.random()*(max-min+1)); }toast:
//TODO By liuyanpeng07 at 10.17 public static void sendToast(final Toast toast, final int cnt ){ final Timer timer = new Timer(); timer.scheduleAtFixedRate(new TimerTask() { @Override public void run() { // TODO Auto-generated method stub toast.show(); } }, 0, 6000); new Timer().schedule(new TimerTask() { @Override public void run() { // TODO Auto-generated method stub toast.cancel(); timer.cancel(); } }, cnt); }
/****** * 判断是否有网络 */ public static boolean isnet(Context context) { ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); if (cm == null) { return false; } else { NetworkInfo[] info = cm.getAllNetworkInfo(); if (info != null) { for (int i = 0; i < info.length; i++) { if (info[i].getState() == NetworkInfo.State.CONNECTED) { return true; } } } } return false; }
/** * @ * @类名称: ${type_name} * @类描述: ${todo} * @创建人:lyp * @创建时间:${date} ${time} * @备注: */ public class ShareUtil { private static SharedPreferences sharedPreferences; private static SharedPreferences.Editor editor; /** * 初始化共享参数 * @param context */ public static void initShared(Context context){ sharedPreferences = context.getSharedPreferences("config", Context.MODE_PRIVATE); editor = sharedPreferences.edit(); } public static void putString(String key, String value){ editor.putString(key, value); editor.commit(); } public static String getString(String key){ return sharedPreferences.getString(key, null); } public static void putInt(String key, int value){ editor.putInt(key, value); editor.commit(); } public static int getInt(String key, int defalutvalue){ return sharedPreferences.getInt(key, defalutvalue); } /** * desc:保存对象 * @param context * @param key * @param obj 要保存的对象,只能保存实现了serializable的对象 * modified: */ public static void saveObject(Context context,String key ,Object obj){ try { //先将序列化结果写到byte缓存中,其实就分配一个内存空间 ByteArrayOutputStream bos=new ByteArrayOutputStream(); ObjectOutputStream os=new ObjectOutputStream(bos); //将对象序列化写入byte缓存 os.writeObject(obj); //将序列化的数据转为16进制保存 String bytesToHexString = bytesToHexString(bos.toByteArray()); //保存该16进制数组 editor.putString(key, bytesToHexString); editor.commit(); } catch (IOException e) { e.printStackTrace(); Log.e("", "保存obj失败"); } } private static String bytesToHexString(byte[] byteArray) { if(byteArray == null){ return null; } if(byteArray.length == 0){ return ""; } StringBuffer sb = new StringBuffer(byteArray.length); String sTemp; for (int i = 0; i < byteArray.length; i++) { sTemp = Integer.toHexString(0xFF & byteArray[i]); if (sTemp.length() < 2) sb.append(0); sb.append(sTemp.toUpperCase()); } return sb.toString(); } /** * desc:获取保存的Object对象 * @param context * @param key * @return * modified: */ public static Object readObject(Context context,String key ){ try { if (sharedPreferences.contains(key)) { String string = sharedPreferences.getString(key, ""); if(TextUtils.isEmpty(string)){ return null; }else{ //将16进制的数据转为数组,准备反序列化 byte[] stringToBytes = StringToBytes(string); ByteArrayInputStream bis=new ByteArrayInputStream(stringToBytes); ObjectInputStream is=new ObjectInputStream(bis); //返回反序列化得到的对象 Object readObject = is.readObject(); return readObject; } } } catch (StreamCorruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } //所有异常返回null return null; } /** * desc:将16进制的数据转为数组 * @param data * @return * modified: */ public static byte[] StringToBytes(String data){ String hexString=data.toUpperCase().trim(); if (hexString.length()%2!=0) { return null; } byte[] retData=new byte[hexString.length()/2]; for(int i=0;i<hexString.length();i++) { int int_ch; // 两位16进制数转化后的10进制数 char hex_char1 = hexString.charAt(i); ////两位16进制数中的第一位(高位*16) int int_ch1; if(hex_char1 >= '0' && hex_char1 <='9') int_ch1 = (hex_char1-48)*16; //// 0 的Ascll - 48 else if(hex_char1 >= 'A' && hex_char1 <='F') int_ch1 = (hex_char1-55)*16; //// A 的Ascll - 65 else return null; i++; char hex_char2 = hexString.charAt(i); ///两位16进制数中的第二位(低位) int int_ch2; if(hex_char2 >= '0' && hex_char2 <='9') int_ch2 = (hex_char2-48); //// 0 的Ascll - 48 else if(hex_char2 >= 'A' && hex_char2 <='F') int_ch2 = hex_char2-55; //// A 的Ascll - 65 else return null; int_ch = int_ch1+int_ch2; retData[i/2]=(byte) int_ch;//将转化后的数放入Byte里 } return retData; } }