在卸载android应用程序时询问密码？

我正在开发一个应用程序，它可以存储有关通话和消息的信息。我不希望用户在不输入密码的情况下卸载应用程序。我想阻止用户这样做。我也查看了这些链接，但我找不到任何线索：

以下是我写的：

安卓清单

<receiver android:name=".DetectRemoved" >
                <intent-filter android:priority="999999">
                    <action android:name="android.intent.action.QUERY_PACKAGE_RESTART" />
                    <data android:scheme="package" />
                </intent-filter>
            </receiver>

我不希望用户在不输入密码的情况下卸载应用程序

---

这是不可能的。不会通知您的应用程序，也不会请求您的许可。

它是如何工作的

在manifest.xml中

添加权限：

<uses-permission android:name="android.permission.GET_TASKS"/>

ListenActivities类-用于监视前台活动

class ListenActivities extends Thread{
boolean exit = false;
ActivityManager am = null;
Context context = null;

public ListenActivities(Context con){
    context = con;
    am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
}

public void run(){

    Looper.prepare();

    while(!exit){

         // get the info from the currently running task
         List< ActivityManager.RunningTaskInfo > taskInfo = am.getRunningTasks(MAX_PRIORITY); 

         String activityName = taskInfo.get(0).topActivity.getClassName();


         Log.d("topActivity", "CURRENT Activity ::"
                 + activityName);

         if (activityName.equals("com.android.packageinstaller.UninstallerActivity")) {
            // User has clicked on the Uninstall button under the Manage Apps settings

             //do whatever pre-uninstallation task you want to perform here
             // show dialogue or start another activity or database operations etc..etc..

            // context.startActivity(new Intent(context, MyPreUninstallationMsgActivity.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK));
             exit = true;
             Toast.makeText(context, "Done with preuninstallation tasks... Exiting Now", Toast.LENGTH_SHORT).show();
        } else if(activityName.equals("com.android.settings.ManageApplications")) {
            // back button was pressed and the user has been taken back to Manage Applications window
                      // we should close the activity monitoring now
            exit=true;
        }
    }
    Looper.loop();
}
}

类ListenActivities扩展线程{
布尔退出=假；
ActivityManager am=null；
Context=null；
公共列表活动（上下文con）{
上下文=con；
am=（ActivityManager）context.getSystemService（context.ACTIVITY\u服务）；
}
公开募捐{
Looper.prepare（）；
当（！退出）{
//从当前正在运行的任务中获取信息
列出taskInfo=am.getRunningTasks（最大优先级）；
字符串activityName=taskInfo.get（0.topActivity.getClassName（）；
Log.d（“topActivity”，“当前活动：”
+活动名称）；
if（activityName.equals（“com.android.packageinstaller.UninstallerActivity”））{
//用户已单击“管理应用程序设置”下的“卸载”按钮
//执行您想在此处执行的任何预卸载任务
//显示对话或启动其他活动或数据库操作等。。
//context.startActivity（新意图（context，MyPreUninstallationMsgActivity.class）.setFlags（意图.FLAG_活动_新任务））；
退出=真；
Toast.makeText（上下文，“完成预卸载任务…立即退出”，Toast.LENGTH_SHORT.show（）；
}else if（activityName.equals（“com.android.settings.ManageApplications”））{
//按下“后退”按钮，用户已返回到“管理应用程序”窗口
//我们现在应该关闭活动监视
退出=真；
}
}
loop.loop（）；
}
}

---

这是我在一些链接中找到的代码，希望对您有所帮助。

谢谢，但如何检测我的应用被删除或卸载？可能？删除包后会广播删除消息，因此其他人会收到通知，因为您的包当时已被删除，所以“否”。请参见broadasts

PACKAGE.*

此处：好的，我将从myside重试。

<receiver android:name=".UninstallIntentReceiver">
  <intent-filter android:priority="0">
        <action android:name="android.intent.action.QUERY_PACKAGE_RESTART" />
        <data android:scheme="package" />
  </intent-filter>

public class UninstallIntentReceiver extends BroadcastReceiver{

@Override
public void onReceive(Context context, Intent intent) {
    // fetching package names from extras
    String[] packageNames = intent.getStringArrayExtra("android.intent.extra.PACKAGES"); 

    if(packageNames!=null){
        for(String packageName: packageNames){
            if(packageName!=null && packageName.equals("YOUR_APPLICATION_PACKAGE_NAME")){
                // User has selected our application under the Manage Apps settings
                // now initiating background thread to watch for activity
                new ListenActivities(context).start();

            }
        }
    }
}

}

class ListenActivities extends Thread{
boolean exit = false;
ActivityManager am = null;
Context context = null;

public ListenActivities(Context con){
    context = con;
    am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
}

public void run(){

    Looper.prepare();

    while(!exit){

         // get the info from the currently running task
         List< ActivityManager.RunningTaskInfo > taskInfo = am.getRunningTasks(MAX_PRIORITY); 

         String activityName = taskInfo.get(0).topActivity.getClassName();


         Log.d("topActivity", "CURRENT Activity ::"
                 + activityName);

         if (activityName.equals("com.android.packageinstaller.UninstallerActivity")) {
            // User has clicked on the Uninstall button under the Manage Apps settings

             //do whatever pre-uninstallation task you want to perform here
             // show dialogue or start another activity or database operations etc..etc..

            // context.startActivity(new Intent(context, MyPreUninstallationMsgActivity.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK));
             exit = true;
             Toast.makeText(context, "Done with preuninstallation tasks... Exiting Now", Toast.LENGTH_SHORT).show();
        } else if(activityName.equals("com.android.settings.ManageApplications")) {
            // back button was pressed and the user has been taken back to Manage Applications window
                      // we should close the activity monitoring now
            exit=true;
        }
    }
    Looper.loop();
}
}