android 按键注入，模拟back,home,menu按键
第一，要有?<?uses-permission?android:name?=?"android.permission.INJECT_EVENTS"/>?? ?第二，需要这个?android:sharedUserId?=?"android.uid.system"? 系统app?第三，cmd ="input keyevent 4" //back键注入public?String doExec(String cmd) {????????????? String s =?"/n";??????????????try?{????????????????? Process p = Runtime.?getRuntime().exec(cmd);????????????????? BufferedReader in =?new?BufferedReader(??????????????????????????????????????new?InputStreamReader(p.getInputStream()));????????????????? String line =?null;??????????????????while?((line = in.readLine()) !=?null) {????????????????????? s += line +?"/n";???????????????????????????????? }????????????? }?catch?(IOException e) {??????????????????//?TODO?Auto-generated catch block????????????????? e.printStackTrace();????????????? }????????????? Log.?d("voice"?,?"s = "?+ s);?????????????return?cmd;?????????????? }第四，需要系统签名
