Android应用如何监听自己是否被卸载及卸载反馈功能的实现

一个应用被用户卸载肯定是有理由的，而开发者却未必能得知这一重要的理由，毕竟用户很少会主动反馈建议，多半就是用得不爽就卸，如果能在被卸载后获取到用户的一些反馈，那对开发者进一步改进应用是非常有利的。目前据我所知，国内的Android应用中实现这一功能的只有360手机卫士、360平板卫士，那么如何实现这一功能的？





我们可以把实现卸载反馈的问题转化为监听自己是否被卸载，只有得知自己被卸载，才可以设计相应的反馈处理流程。以下的列表是我在研究这一问题的思路：





1，注册BroadcastReceiver，监听&#8221;android.intent.action.PACKAGE_REMOVED&#8221;系统广播





结果：NO。未写代码，直接分析，卸载的第一步就是退出当前应用的主进程，而此广播是在已经卸载完成后才发出的，此时主进程都没有了，去哪onReceive()呢？





2，若能收到&#8221;将要卸载XX包&#8221;的系统广播，在主进程被退出之前就抢先进行反馈处理就好了，可惜没有这样的系统广播，不过经过调研，倒是发现了一个办法，读取系统log，当日志中包含&#8221;android.intent.action.DELETE&#8221;和自己的包名时，意味着自己将要被卸载。





结果：NO。调试时发现此方法有两个缺陷，（1）点击设置中的卸载按钮即发出此Intent，此时用户尚未在弹框中确认卸载；（2）pm命令卸载不出发此Intent，意味着被诸如手机安全管家，豌豆荚等软件卸载时，无法提前得知卸载意图。





3，由于时间点不容易把控，所以干脆不依赖系统广播或log，考虑到卸载过程会删除&#8221;/data/data/包名&#8221;目录，我们可以用线程直接轮询这个目录是否存在，以此为依据判断自己是否被卸载。





结果：NO。同方法1，主进程退出，相应的线程必定退出，线程还没等到判断目录是否存在就已经被销毁了。





4，改用C端进程轮询&#8221;/data/data/包名&#8221;目录是否存在





结果：YES。借助Java端进程fork出来的C端进程在应用被卸载后不会被销毁。





OK，上代码！





Activity启动时fork出C端进程轮询目录：

![复制代码](http://common.cnblogs.com/images/copycode.gif)

```

1 package main.activity; 2 3 import pym.test.uninstalledmoniter.R; 4 import android.app.Activity; 5 import android.os.Bundle; 6 import android.util.Log; 7 8 /** 9 * @author pengyiming 10 * @note 监听此应用是否被卸载，若被卸载则弹出卸载反馈 11 * 12 / 13 14 public class UninstalledMoniterActivity extends Activity 15 { 16 / 数据段begin / 17 private static final String TAG = “UninstalledMoniterActivity”; 18 / 数据段end / 19
20 / 函数段begin / 21 private native void init(); 22 static 23 { 24 Log.d(TAG, “load libuninstalled_moniter”); 25 System.loadLibrary(“uninstalled_moniter”); 26 } 27
28 @Override 29 public void onCreate(Bundle savedInstanceState) 30 { 31 super.onCreate(savedInstanceState); 32 Log.d(TAG, “onCreate”); 33
34 setContentView(R.layout.uninstalled_moniter_layout); 35
36 init(); 37 } 38 / 函数段end */ 39 }

    
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    核心——native方法头文件：
  

  
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    ```
 1 /* 头文件begin */
 2 #include &lt;jni.h&gt;
 3 #include &lt;stdio.h&gt;
 4 #include &lt;string.h&gt;
 5 #include &lt;android/log.h&gt;
 6 #include &lt;unistd.h&gt;
 7 /* 头文件end */
 8 
 9 /* 宏定义begin */
10 //清0宏
11 #define MEM_ZERO(pDest, destSize) memset(pDest, 0, destSize)
12 
13 //LOG宏定义
14 #define LOG_INFO(tag, msg) __android_log_write(ANDROID_LOG_INFO, tag, msg)
15 #define LOG_DEBUG(tag, msg) __android_log_write(ANDROID_LOG_DEBUG, tag, msg)
16 #define LOG_WARN(tag, msg) __android_log_write(ANDROID_LOG_WARN, tag, msg)
17 #define LOG_ERROR(tag, msg) __android_log_write(ANDROID_LOG_ERROR, tag, msg)
18 /* 宏定义end */
19 
20 #ifndef _Included_main_activity_UninstalledMoniterActivity
21 #define _Included_main_activity_UninstalledMoniterActivity
22 #ifdef __cplusplus
23 extern "C" {
24 #endif
25 
26 #undef main_activity_UninstalledMoniterActivity_MODE_PRIVATE
27 #define main_activity_UninstalledMoniterActivity_MODE_PRIVATE 0L
28 #undef main_activity_UninstalledMoniterActivity_MODE_WORLD_READABLE
29 #define main_activity_UninstalledMoniterActivity_MODE_WORLD_READABLE 1L
30 #undef main_activity_UninstalledMoniterActivity_MODE_WORLD_WRITEABLE
31 #define main_activity_UninstalledMoniterActivity_MODE_WORLD_WRITEABLE 2L
32 #undef main_activity_UninstalledMoniterActivity_MODE_APPEND
33 #define main_activity_UninstalledMoniterActivity_MODE_APPEND 32768L
34 #undef main_activity_UninstalledMoniterActivity_MODE_MULTI_PROCESS
35 #define main_activity_UninstalledMoniterActivity_MODE_MULTI_PROCESS 4L
36 #undef main_activity_UninstalledMoniterActivity_BIND_AUTO_CREATE
37 #define main_activity_UninstalledMoniterActivity_BIND_AUTO_CREATE 1L
38 #undef main_activity_UninstalledMoniterActivity_BIND_DEBUG_UNBIND
39 #define main_activity_UninstalledMoniterActivity_BIND_DEBUG_UNBIND 2L
40 #undef main_activity_UninstalledMoniterActivity_BIND_NOT_FOREGROUND
41 #define main_activity_UninstalledMoniterActivity_BIND_NOT_FOREGROUND 4L
42 #undef main_activity_UninstalledMoniterActivity_BIND_ABOVE_CLIENT
43 #define main_activity_UninstalledMoniterActivity_BIND_ABOVE_CLIENT 8L
44 #undef main_activity_UninstalledMoniterActivity_BIND_ALLOW_OOM_MANAGEMENT
45 #define main_activity_UninstalledMoniterActivity_BIND_ALLOW_OOM_MANAGEMENT 16L
46 #undef main_activity_UninstalledMoniterActivity_BIND_WAIVE_PRIORITY
47 #define main_activity_UninstalledMoniterActivity_BIND_WAIVE_PRIORITY 32L
48 #undef main_activity_UninstalledMoniterActivity_BIND_IMPORTANT
49 #define main_activity_UninstalledMoniterActivity_BIND_IMPORTANT 64L
50 #undef main_activity_UninstalledMoniterActivity_BIND_ADJUST_WITH_ACTIVITY
51 #define main_activity_UninstalledMoniterActivity_BIND_ADJUST_WITH_ACTIVITY 128L
52 #undef main_activity_UninstalledMoniterActivity_CONTEXT_INCLUDE_CODE
53 #define main_activity_UninstalledMoniterActivity_CONTEXT_INCLUDE_CODE 1L
54 #undef main_activity_UninstalledMoniterActivity_CONTEXT_IGNORE_SECURITY
55 #define main_activity_UninstalledMoniterActivity_CONTEXT_IGNORE_SECURITY 2L
56 #undef main_activity_UninstalledMoniterActivity_CONTEXT_RESTRICTED
57 #define main_activity_UninstalledMoniterActivity_CONTEXT_RESTRICTED 4L
58 #undef main_activity_UninstalledMoniterActivity_RESULT_CANCELED
59 #define main_activity_UninstalledMoniterActivity_RESULT_CANCELED 0L
60 #undef main_activity_UninstalledMoniterActivity_RESULT_OK
61 #define main_activity_UninstalledMoniterActivity_RESULT_OK -1L
62 #undef main_activity_UninstalledMoniterActivity_RESULT_FIRST_USER
63 #define main_activity_UninstalledMoniterActivity_RESULT_FIRST_USER 1L
64 #undef main_activity_UninstalledMoniterActivity_DEFAULT_KEYS_DISABLE
65 #define main_activity_UninstalledMoniterActivity_DEFAULT_KEYS_DISABLE 0L
66 #undef main_activity_UninstalledMoniterActivity_DEFAULT_KEYS_DIALER
67 #define main_activity_UninstalledMoniterActivity_DEFAULT_KEYS_DIALER 1L
68 #undef main_activity_UninstalledMoniterActivity_DEFAULT_KEYS_SHORTCUT
69 #define main_activity_UninstalledMoniterActivity_DEFAULT_KEYS_SHORTCUT 2L
70 #undef main_activity_UninstalledMoniterActivity_DEFAULT_KEYS_SEARCH_LOCAL
71 #define main_activity_UninstalledMoniterActivity_DEFAULT_KEYS_SEARCH_LOCAL 3L
72 #undef main_activity_UninstalledMoniterActivity_DEFAULT_KEYS_SEARCH_GLOBAL
73 #define main_activity_UninstalledMoniterActivity_DEFAULT_KEYS_SEARCH_GLOBAL 4L
74 
75 /*
76  * Class:     main_activity_UninstalledMoniterActivity
77  * Method:    init
78  * Signature: ()V
79  */
80 JNIEXPORT void JNICALL Java_main_activity_UninstalledMoniterActivity_init(JNIEnv *, jobject);
81 
82 #ifdef __cplusplus
83 }
84 #endif
85 #endif

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核心——native方法实现：

![复制代码](http://common.cnblogs.com/images/copycode.gif)

```

1 /* 头文件begin / 2 #include “main_activity_UninstalledMoniterActivity.h” 3 / 头文件end / 4 5 #ifdef __cplusplus 6 extern “C” { 7 #endif 8 9 / 内全局变量begin / 10 static char c_TAG[] = “UninstalledMoniterActivity.init”; 11 static jboolean b_IS_COPY = JNI_TRUE; 12 / 内全局变量 / 13 14 / 15 * Class: main_activity_UninstalledMoniterActivity 16 * Method: init 17 * Signature: ()V 18 */ 19 JNIEXPORT void JNICALL Java_main_activity_UninstalledMoniterActivity_init(JNIEnv *env, jobject obj) 20 { 21 jstring tag = (*env)->NewStringUTF(env, c_TAG); 22 23 //初始化log 24 LOG_DEBUG((*env)->GetStringUTFChars(env, tag, &b_IS_COPY) 25 , (*env)->GetStringUTFChars(env, (*env)->NewStringUTF(env, “init OK”), &b_IS_COPY)); 26 27 //fork子进程，以执行轮询任务 28 pid_t pid = fork(); 29 if (pid < 0) 30 { 31 //出错log 32 LOG_ERROR((*env)->GetStringUTFChars(env, tag, &b_IS_COPY) 33 , (*env)->GetStringUTFChars(env, (*env)->NewStringUTF(env, “fork error !!!”), &b_IS_COPY)); 34 } 35 else if (pid == 0) 36 { 37 //子进程轮询"/data/data/pym.test.uninstalledmoniter"目录是否存在，若不存在则说明已被卸载 38 while (1) 39 { 40 FILE *p_file = fopen("/data/data/pym.test.uninstalledmoniter", “r”); 41 if (p_file != NULL) 42 { 43 fclose(p_file); 44 45 //目录存在log 46 LOG_DEBUG((*env)->GetStringUTFChars(env, tag, &b_IS_COPY) 47 , (*env)->GetStringUTFChars(env, (*env)->NewStringUTF(env, “I’m OK !!!”), &b_IS_COPY)); 48 49 sleep(1); 50 } 51 else 52 { 53 //目录不存在log 54 LOG_DEBUG((*env)->GetStringUTFChars(env, tag, &b_IS_COPY) 55 , (*env)->GetStringUTFChars(env, (*env)->NewStringUTF(env, “I’m NOT OK !!!”), &b_IS_COPY)); 56 57 //执行命令am start -a android.intent.action.VIEW -d http://shouji.360.cn/web/uninstall/uninstall.html 58 execlp(“am”, “am”, “start”, “-a”, “android.intent.action.VIEW”, “-d”, “http://shouji.360.cn/web/uninstall/uninstall.html", (char *)NULL); 59 } 60 } 61 } 62 else 63 { 64 //父进程直接退出，使子进程被init进程领养，以避免子进程僵死 65 } 66 } 67 68 #ifdef __cplusplus 69 } 70 #endif

    
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    注1：为了调试方便，包含<android/log.h>，使得so在执行过程中也可以像Java端一样方便得打出log。相应的mk文件需要加上以下两句声明
  

  
  

    LOCAL_C_INCLUDES := <span class="katex math inline">(LOCAL_PATH)/include
 LOCAL_LDLIBS += -L</span>(SYSROOT)/usr/lib -llog
  

  
  

    注2：代码中引用了360手机卫士的反馈地址，仅供大家学习、测试使用~~~
  

  
  

    转自：http://www.cnblogs.com/zealotrouge/p/3157126.html
  

  
  

    &nbsp;
  

  
  # [Android应用如何监听自己是否被卸载及卸载反馈功能的实现（第二版）](http://www.cnblogs.com/zealotrouge/p/3159772.html)
  
  

    &nbsp;
  

  
  <div id="cnblogs_post_body">
    

      昨天发了一篇有关监听自己是否被卸载和卸载反馈功能实现的博客，地址如下：[http://www.cnblogs.com/zealotrouge/p/3157126.html](http://www.cnblogs.com/zealotrouge/p/3157126.html)，发出去后收到几位热心网友的建议，在此特别感谢@cccode @泡泡糖 @Alexia(minmin) @0x00.pl ，你们的建议就是我前进的动力。
    

    
    

      昨天的技术方案有一个硬伤，就是每1s就需要轮询目录是否存在，对资源消耗较大，第二版将会解决这一问题。思路是今天想到了一个Android自API1就有的一个类FileObserver，这个类用于监听某个文件的变化状态，如果是目录，这个类还可以监听其子目录及子目录文件的变化状态，通过阅读FileObserver源码，发现其实现利用了Linux内核中一个重要的机制inotify，它是一个内核用于通知用户空间程序文件系统变化的机制，详情可参考[http://en.wikipedia.org/wiki/Inotify](http://en.wikipedia.org/wiki/Inotify)，里面对inotify有比较详细的说明。
    

    
    

      使用inotify的好处就在于不需要每1s的轮询，这样就不会无谓地消耗系统资源，使用inotify时会用read()方法阻塞进程，直到收到IN_DELETE通知，此时进程重新被唤醒，执行反馈处理流程。
    

    
    

      由于Activity代码和Android.mk文件和第一版并无实质性区别，这里就不贴代码了，直接贴出C端进程的实现代码吧。
    

    
    

      核心——native方法头文件：
    

    
    

      &nbsp;
    

    
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      ```
 1 /* 头文件begin */
 2 #include &lt;jni.h&gt;
 3 #include &lt;stdlib.h&gt;
 4 #include &lt;stdio.h&gt;
 5 #include &lt;string.h&gt;
 6 #include &lt;android/log.h&gt;
 7 #include &lt;unistd.h&gt;
 8 #include &lt;sys/inotify.h&gt;
 9 #include &lt;fcntl.h&gt;
10 /* 头文件end */
11 
12 /* 宏定义begin */
13 //清0宏
14 #define MEM_ZERO(pDest, destSize) memset(pDest, 0, destSize)
15 
16 //LOG宏定义
17 #define LOG_INFO(tag, msg) __android_log_write(ANDROID_LOG_INFO, tag, msg)
18 #define LOG_DEBUG(tag, msg) __android_log_write(ANDROID_LOG_DEBUG, tag, msg)
19 #define LOG_WARN(tag, msg) __android_log_write(ANDROID_LOG_WARN, tag, msg)
20 #define LOG_ERROR(tag, msg) __android_log_write(ANDROID_LOG_ERROR, tag, msg)
21 /* 宏定义end */
22 
23 #ifndef _Included_main_activity_UninstalledObserverActivity
24 #define _Included_main_activity_UninstalledObserverActivity
25 #ifdef __cplusplus
26 extern "C" {
27 #endif
28 
29 #undef main_activity_UninstalledObserverActivity_MODE_PRIVATE
30 #define main_activity_UninstalledObserverActivity_MODE_PRIVATE 0L
31 #undef main_activity_UninstalledObserverActivity_MODE_WORLD_READABLE
32 #define main_activity_UninstalledObserverActivity_MODE_WORLD_READABLE 1L
33 #undef main_activity_UninstalledObserverActivity_MODE_WORLD_WRITEABLE
34 #define main_activity_UninstalledObserverActivity_MODE_WORLD_WRITEABLE 2L
35 #undef main_activity_UninstalledObserverActivity_MODE_APPEND
36 #define main_activity_UninstalledObserverActivity_MODE_APPEND 32768L
37 #undef main_activity_UninstalledObserverActivity_MODE_MULTI_PROCESS
38 #define main_activity_UninstalledObserverActivity_MODE_MULTI_PROCESS 4L
39 #undef main_activity_UninstalledObserverActivity_BIND_AUTO_CREATE
40 #define main_activity_UninstalledObserverActivity_BIND_AUTO_CREATE 1L
41 #undef main_activity_UninstalledObserverActivity_BIND_DEBUG_UNBIND
42 #define main_activity_UninstalledObserverActivity_BIND_DEBUG_UNBIND 2L
43 #undef main_activity_UninstalledObserverActivity_BIND_NOT_FOREGROUND
44 #define main_activity_UninstalledObserverActivity_BIND_NOT_FOREGROUND 4L
45 #undef main_activity_UninstalledObserverActivity_BIND_ABOVE_CLIENT
46 #define main_activity_UninstalledObserverActivity_BIND_ABOVE_CLIENT 8L
47 #undef main_activity_UninstalledObserverActivity_BIND_ALLOW_OOM_MANAGEMENT
48 #define main_activity_UninstalledObserverActivity_BIND_ALLOW_OOM_MANAGEMENT 16L
49 #undef main_activity_UninstalledObserverActivity_BIND_WAIVE_PRIORITY
50 #define main_activity_UninstalledObserverActivity_BIND_WAIVE_PRIORITY 32L
51 #undef main_activity_UninstalledObserverActivity_BIND_IMPORTANT
52 #define main_activity_UninstalledObserverActivity_BIND_IMPORTANT 64L
53 #undef main_activity_UninstalledObserverActivity_BIND_ADJUST_WITH_ACTIVITY
54 #define main_activity_UninstalledObserverActivity_BIND_ADJUST_WITH_ACTIVITY 128L
55 #undef main_activity_UninstalledObserverActivity_CONTEXT_INCLUDE_CODE
56 #define main_activity_UninstalledObserverActivity_CONTEXT_INCLUDE_CODE 1L
57 #undef main_activity_UninstalledObserverActivity_CONTEXT_IGNORE_SECURITY
58 #define main_activity_UninstalledObserverActivity_CONTEXT_IGNORE_SECURITY 2L
59 #undef main_activity_UninstalledObserverActivity_CONTEXT_RESTRICTED
60 #define main_activity_UninstalledObserverActivity_CONTEXT_RESTRICTED 4L
61 #undef main_activity_UninstalledObserverActivity_RESULT_CANCELED
62 #define main_activity_UninstalledObserverActivity_RESULT_CANCELED 0L
63 #undef main_activity_UninstalledObserverActivity_RESULT_OK
64 #define main_activity_UninstalledObserverActivity_RESULT_OK -1L
65 #undef main_activity_UninstalledObserverActivity_RESULT_FIRST_USER
66 #define main_activity_UninstalledObserverActivity_RESULT_FIRST_USER 1L
67 #undef main_activity_UninstalledObserverActivity_DEFAULT_KEYS_DISABLE
68 #define main_activity_UninstalledObserverActivity_DEFAULT_KEYS_DISABLE 0L
69 #undef main_activity_UninstalledObserverActivity_DEFAULT_KEYS_DIALER
70 #define main_activity_UninstalledObserverActivity_DEFAULT_KEYS_DIALER 1L
71 #undef main_activity_UninstalledObserverActivity_DEFAULT_KEYS_SHORTCUT
72 #define main_activity_UninstalledObserverActivity_DEFAULT_KEYS_SHORTCUT 2L
73 #undef main_activity_UninstalledObserverActivity_DEFAULT_KEYS_SEARCH_LOCAL
74 #define main_activity_UninstalledObserverActivity_DEFAULT_KEYS_SEARCH_LOCAL 3L
75 #undef main_activity_UninstalledObserverActivity_DEFAULT_KEYS_SEARCH_GLOBAL
76 #define main_activity_UninstalledObserverActivity_DEFAULT_KEYS_SEARCH_GLOBAL 4L
77 
78 /*
79  * Class:     main_activity_UninstalledObserverActivity
80  * Method:    init
81  * Signature: ()V
82  */
83 JNIEXPORT void JNICALL Java_main_activity_UninstalledObserverActivity_init(JNIEnv *, jobject);
84 
85 #ifdef __cplusplus
86 }
87 #endif
88 #endif

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  &nbsp;





  核心——native方法实现：





  &nbsp;



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  ```

1 /* 头文件begin / 2 #include “main_activity_UninstalledObserverActivity.h” 3 / 头文件end / 4 5 #ifdef __cplusplus 6 extern “C” { 7 #endif 8 9 / 内全局变量begin / 10 static char c_TAG[] = “UninstalledObserverActivity.init”; 11 static jboolean b_IS_COPY = JNI_TRUE; 12 / 内全局变量 / 13 14 / 15 * Class: main_activity_UninstalledObserverActivity 16 * Method: init 17 * Signature: ()V 18 */ 19 JNIEXPORT void JNICALL Java_main_activity_UninstalledObserverActivity_init(JNIEnv *env, jobject obj) 20 { 21 jstring tag = (*env)->NewStringUTF(env, c_TAG); 22 23 //初始化log 24 LOG_DEBUG((*env)->GetStringUTFChars(env, tag, &b_IS_COPY) 25 , (*env)->GetStringUTFChars(env, (*env)->NewStringUTF(env, “init OK”), &b_IS_COPY)); 26 27 //fork子进程，以执行轮询任务 28 pid_t pid = fork(); 29 if (pid < 0) 30 { 31 //出错log 32 LOG_ERROR((*env)->GetStringUTFChars(env, tag, &b_IS_COPY) 33 , (*env)->GetStringUTFChars(env, (*env)->NewStringUTF(env, “fork failed !!!”), &b_IS_COPY)); 34 } 35 else if (pid == 0) 36 { 37 //子进程注册”/data/data/pym.test.uninstalledobserver"目录监听器 38 int fileDescriptor = inotify_init(); 39 if (fileDescriptor < 0) 40 { 41 LOG_DEBUG((*env)->GetStringUTFChars(env, tag, &b_IS_COPY) 42 , (*env)->GetStringUTFChars(env, (*env)->NewStringUTF(env, “inotify_init failed !!!”), &b_IS_COPY)); 43 44 exit(1); 45 } 46 47 int watchDescriptor; 48 watchDescriptor = inotify_add_watch(fileDescriptor, “/data/data/pym.test.uninstalledobserver”, IN_DELETE); 49 if (watchDescriptor < 0) 50 { 51 LOG_DEBUG((*env)->GetStringUTFChars(env, tag, &b_IS_COPY) 52 , (*env)->GetStringUTFChars(env, (*env)->NewStringUTF(env, “inotify_add_watch failed !!!”), &b_IS_COPY)); 53 54 exit(1); 55 } 56 57 //分配缓存，以便读取event，缓存大小=一个struct inotify_event的大小，这样一次处理一个event 58 void *p_buf = malloc(sizeof(struct inotify_event)); 59 if (p_buf == NULL) 60 { 61 LOG_DEBUG((*env)->GetStringUTFChars(env, tag, &b_IS_COPY) 62 , (*env)->GetStringUTFChars(env, (*env)->NewStringUTF(env, “malloc failed !!!”), &b_IS_COPY)); 63 64 exit(1); 65 } 66 //开始监听 67 LOG_DEBUG((*env)->GetStringUTFChars(env, tag, &b_IS_COPY) 68 , (*env)->GetStringUTFChars(env, (*env)->NewStringUTF(env, “start observer”), &b_IS_COPY)); 69 size_t readBytes = read(fileDescriptor, p_buf, sizeof(struct inotify_event)); 70 71 //read会阻塞进程，走到这里说明收到目录被删除的事件，注销监听器 72 free(p_buf); 73 inotify_rm_watch(fileDescriptor, IN_DELETE); 74 75 //目录不存在log 76 LOG_DEBUG((*env)->GetStringUTFChars(env, tag, &b_IS_COPY) 77 , (*env)->GetStringUTFChars(env, (*env)->NewStringUTF(env, “uninstalled”), &b_IS_COPY)); 78 79 //执行命令am start -a android.intent.action.VIEW -d http://shouji.360.cn/web/uninstall/uninstall.html 80 execlp(“am”, “am”, “start”, “-a”, “android.intent.action.VIEW”, “-d”, “http://shouji.360.cn/web/uninstall/uninstall.html", (char *)NULL); 81 } 82 else 83 { 84 //父进程直接退出，使子进程被init进程领养，以避免子进程僵死 85 } 86 } 87 88 #ifdef __cplusplus 89 } 90 #endif

      
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      转自：http://www.cnblogs.com/zealotrouge/p/3159772.html
    

    
    

      &nbsp;
    

    
    

      问题：
    

    
    

      4.2.2的问题解决了，在4.2.2上运行时会抛异常：
 Permission Denial: startActivity asks to run as user -2 but is calling from user 0; this requires android.permission.INTERACT_ACROSS_USERS_FULL，
 然后吧命令修改为： execlp(&#8220;am&#8221;, &#8220;am&#8221;, &#8220;start&#8221;,&#8221;&#8211;user&#8221;, &#8220;0&#8221; ,&#8221;-a&#8221;, &#8220;android.intent.action.VIEW&#8221;, &#8220;-d&#8221;, &#8220;[http://shouji.360.cn/web/uninstall/uninstall.html](http://shouji.360.cn/web/uninstall/uninstall.html)&#8220;, (char *)NULL);这样就可以了。
    

    
    

      &nbsp;
    

    
    

      你好，已经解决了，只是最近比较忙没有时间写博客，解决方案是加&#8211;user，不过&#8211;user后不一定是0，这个跟google 4.2加入的多用户支持特性有关，等这段时间忙完了我会写篇博客专门分析这个问题，包括如何给&#8211;user传递正确的值。
    

    
    

      更多问题参考：http://www.cnblogs.com/zealotrouge/p/3159772.html
    

    
    

      &nbsp;
    

    
    

      最后给出eoe上面的demo地址：http://www.eoeandroid.com/thread-317728-1-1.html
    

    
    

      没有eoe的伙伴下载这个[监听自身被卸载](http://www.etongwl.com/images/2015/01/监听自身被卸载.zip)
    

    
    

      git上有个开源地址：https://github.com/sevenler/Uninstall_Statics
    

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