android 修改wifi信号强度

基于MTK 6.0系统

源码文件 frameworks/base/wifi/java/android/net/wifi/WifiManager.java;

 /**      * Calculates the level of the signal. This should be used any time a signal      * is being shown.      * @param rssi The power of the signal measured in RSSI.      * @param numLevels The number of levels to consider in the calculated      *            level.      * @return A level of the signal, given in the range of 0 to numLevels-1      *         (both inclusive).      */     public static int calculateSignalLevel(int rssi, int numLevels) {         rssi = rssi + 8; // add by wxd         if (rssi <= MIN_RSSI) {             return 0;         } else if (rssi >= MAX_RSSI) {             return numLevels - 1;         } else {             float inputRange = (MAX_RSSI - MIN_RSSI);             float outputRange = (numLevels - 1);             return (int)((float)(rssi - MIN_RSSI) * outputRange / inputRange);         }     }

上述方法就是计算wifi信号强度等级的函数，MAX_RSSI和MIN_RSSI分别为最强和最弱信号强度等级的信号强度阀值，分别为-55和-100，至于信号强度等级系统默认是这样的

     /**      * Number of RSSI levels used in the framework to initiate      * {@link #RSSI_CHANGED_ACTION} broadcast      * @hide      */     public static final int RSSI_LEVELS = 5; 如果想修改wifi的信号强度的显示，把rssi数值加大就好了。

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