使用暗码启动内置APK

   

场景设想：如果你需要隐藏你的apk icon，并通过android的拨号盘启动你的apk应用

以下是定义了*#*#（……）#*#*格式以及*#（……）*#格式；类似的输入格式都会广播SECRET_CODE_ACTION,

[java] view plain copy print ?

1. <span xmlns="http://www.w3.org/1999/xhtml">/**
2.      * Handles secret codes to launch arbitrary activities in the form of *#*#<code>#*#*.
3.      * If a secret code is encountered an Intent is started with the android_secret_code://<code>
4.      * URI.
5.      *
6.      * @param context the context to use
7.      * @param input the text to check for a secret code in
8.      * @return true if a secret code was encountered
9.      */ 
10.     static boolean handleSecretCode(Context context, String input) { 
11.         // Secret codes are in the form *#*#<code>#*#* 
12.         int len = input.length(); 
13.         Log.i("secrectcode", "len= "+len); 
14.         if (len > 8 && input.startsWith("*#*#") && input.endsWith("#*#*")) 
15.          { 
16.             Intent intent = new Intent(Intents.SECRET_CODE_ACTION, 
17.                     Uri.parse("android_secret_code://" + input.substring(4, len - 4))); 
18.             context.sendBroadcast(intent); 
19.             return true; 
20.         } 
21.          else if (len ==6 && input.startsWith("*#") && input.endsWith("*#")){ 
22.              Intent intent = new Intent(Intents.SECRET_CODE_ACTION, 
23.                      Uri.parse("android_secret_code://" + input.substring(2, len - 2))); 
24.              context.sendBroadcast(intent); 
25.              return true; 
26.          }  
27.         return false; 
28.     }</span> 

<span xmlns="http://www.w3.org/1999/xhtml">/**
     * Handles secret codes to launch arbitrary activities in the form of *#*#<code>#*#*.
     * If a secret code is encountered an Intent is started with the android_secret_code://<code>
     * URI.
     *
     * @param context the context to use
     * @param input the text to check for a secret code in
     * @return true if a secret code was encountered
     */
    static boolean handleSecretCode(Context context, String input) {
        // Secret codes are in the form *#*#<code>#*#*
        int len = input.length();
        Log.i("secrectcode", "len= "+len);
        if (len > 8 && input.startsWith("*#*#") && input.endsWith("#*#*"))
         {
            Intent intent = new Intent(Intents.SECRET_CODE_ACTION,
                    Uri.parse("android_secret_code://" + input.substring(4, len - 4)));
            context.sendBroadcast(intent);
            return true;
        }
         else if (len ==6 && input.startsWith("*#") && input.endsWith("*#")){
             Intent intent = new Intent(Intents.SECRET_CODE_ACTION,
                     Uri.parse("android_secret_code://" + input.substring(2, len - 2)));
             context.sendBroadcast(intent);
             return true;
         } 
        return false;
    }</span>

指定你的data,与你的receiver对应；data和action共同限定了过滤条件；

<receiver android:name=".SecretCode" >            <intent-filter>                <action android:name="android.provider.Telephony.SECRET_CODE" />                <data                    android:host="1234"                    android:scheme="android_secret_code" />            </intent-filter>        </receiver>

 

 

定义一个广播接收器

public class SecretCode extends BroadcastReceiver { private static final String MY_SECRET_CODE = "1234"; @Override public void onReceive(Context context, Intent intent) {  // TODO Auto-generated method stub  String action = intent.getAction();  String host = (intent.getData()== null)? null :intent.getData().getHost();  if (MY_SECRET_CODE.equals(host)) {   Intent mIntent = new Intent(context,BatteryActivity.class );   mIntent.setFlags(intent.FLAG_ACTIVITY_NEW_TASK);   context.startActivity(mIntent);  } }}

 

备注：这样做的APK需要设置android:sharedUserId="android.uid.system"，并且需要系统签名或者在源码下编译，如果签名的APK安装以后首次输入命令会无法启动，需要运行一次APK才可以启动，为了解决这个问题我们需要将APK  Push到手机的system/app目录下就不会有该问题。

 <receiver android:name=".ATSBroadcastReceiver">  
            <intent-filter>  
                 <action android:name="android.provider.Telephony.SECRET_CODE" />  
                 <data android:scheme="android_secret_code" android:host="66" />

                 <data android:scheme="android_secret_code" android:host="67" />   

 
</intent-filter> 
</receiver>