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android 监听应用卸载,跳转到浏览器或安装应用

android 监听应用卸载,跳转到浏览器或安装应用

作者: 0LQ0不放弃 | 来源:发表于2018-03-14 15:26 被阅读162次

Android应用开发中,app 卸载,有时会让用户给一些反馈意见,获取用户卸载app的原因,方便以后完善自己的产品,获取更多的用户量。

涉及技术    android jni开发  cmake,c++



应用卸载: 跳转道浏览器:execlp("am", "am", "start", "--user", "0", "-a","android.intent.action.VIEW", "-d", "http://www.baidu.com",(char*)NULL);

应用卸载: 安装应用:  execlp("am", "am", "start", "--user", "0", "-n","com.android.packageinstaller/.PackageInstallerActivity", "-d","本地apk的路径",(char *) NULL)


am  对应android activitymanager

如果不懂命令  查看Android studio run 命令


#include

#define LOG_TAG "AppUninstallListener@native"

#define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, __VA_ARGS__)

using namespace std;

extern char *__progname;

extern "C"

//使用文件锁的形式判断

int need_fork_new_process_with_fl(string packageNameStr) {

string path ="/data/data/";

    path+= packageNameStr;

    path+= "/lib";

    int fd = open(path.c_str(), O_RDONLY);

    return flock(fd,LOCK_EX|LOCK_NB);

}

JNIEXPORT void JNICALL Java_com_uninstall_application_MainActivity_stringFromJNI(

JNIEnv *env, jobject obj, jstring packageName, jstring versionCode, jstring ttid,

        jstring phoneBrand, jstring osVersion) {

const char * p_package = env->GetStringUTFChars(packageName, NULL);

    string packageNameStr = p_package;

    env->ReleaseStringUTFChars(packageName, p_package);

    const char * p_version = env->GetStringUTFChars(versionCode, NULL);

    string versionCodeStr = p_version;

    env->ReleaseStringUTFChars(versionCode, p_version);

    const char * p_ttid = env->GetStringUTFChars(ttid, NULL);

    string ttidStr = p_ttid;

    env->ReleaseStringUTFChars(ttid, p_ttid);

    const char * p_phoneBrand = env->GetStringUTFChars(phoneBrand, NULL);

    string phoneBrandStr = p_phoneBrand;

    env->ReleaseStringUTFChars(phoneBrand, p_phoneBrand);

    const char * p_osVersion = env->GetStringUTFChars(osVersion, NULL);

    string osVersionStr = p_phoneBrand;

    env->ReleaseStringUTFChars(osVersion, p_osVersion);

    //if(!need_fork_new_process()) {

//LOGD("has exist a process on listening");

//return;

//}

    if(need_fork_new_process_with_fl(packageNameStr) !=0) {

LOGD("file has locked by another process");

    }

pid_t pid = fork();

    if(pid <0) {

//进程fork失败

        LOGD("fork process failed");

    }else if(pid >0) {

//父进程中运行

    }else {

//fork出的进程运行

        LOGD("fork process success,current pid = %d", getpid());

        sprintf(__progname, "uninstall_check");

        //初始化inotify

        int fd = inotify_init();

        if (fd <0) {

LOGD("inotify_init failed");

            exit(1);

        }

string path ="/data/data/";

        path+= packageNameStr;

        path+= "/lib";

        //LOGD("watching path:%s", path.c_str());

        int wd = inotify_add_watch(fd, path.c_str(), IN_DELETE);

        if (wd <0) {

LOGD("inotify_add_watch failed");

            exit(1);

        }

//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

        void *p_buf = malloc(sizeof(struct inotify_event));

        if (p_buf ==NULL) {

LOGD("malloc failed !!!");

            exit(1);

        }

//开始监听

        LOGD("start observer");

        while(1) {

ssize_t readBytes = read(fd, p_buf,sizeof(struct inotify_event));

            LOGD("read event happens");

            //read会阻塞进程,走到这里说明收到目录被删除的事件

            FILE *libDir = fopen(path.c_str(), "r");//判断该目录是否存在,如果存在则是覆盖安装

            if(libDir ==NULL) {

// 应用被卸载了

                LOGD("qapp uninstall,current version = %s, ttid = %s, phoneBrand = %s, osVersion = %s", versionCodeStr.c_str(), ttidStr.c_str(), phoneBrandStr.c_str(), osVersionStr.c_str());

                if ((int)osVersion >=17) {

// Android4.2系统之后支持多用户操作,所以得指定用户

                    execlp("am", "am", "start", "--user", "0", "-a",

                          "android.intent.action.VIEW", "-d", "web url",

                          (char*)NULL);

                }else {

// Android4.2以前的版本无需指定用户

                    execlp("am", "am", "start", "-a", "android.intent.action.VIEW",

                          "-d", "http://www.baidu.com", (char*)NULL);

                }

}else {

// 覆盖安装

                LOGD("app reinstall");

                fclose(libDir);

                free(p_buf);

                p_buf =NULL;

                exit(0);

            }

}

if(p_buf !=NULL) {

free(p_buf);

        }

}

}

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