71 lines
2.5 KiB
Java
71 lines
2.5 KiB
Java
package net.typeblog.shelter.services;
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import android.app.Service;
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import android.app.admin.DevicePolicyManager;
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import android.content.BroadcastReceiver;
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import android.content.ComponentName;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.os.IBinder;
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import androidx.annotation.Nullable;
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import net.typeblog.shelter.receivers.ShelterDeviceAdminReceiver;
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import java.util.ArrayList;
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import java.util.List;
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// This service simply registers a screen-off listener that will be called
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// when the user locks the screen. When this happens, this service
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// will freeze all the apps that the user launched through Unfreeze & Launch
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// during the last session.
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public class FreezeService extends Service {
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// Use a static variable and static methods to store the current list to be frozen
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// We don't need to run this service in another process, so the static context should
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// be sufficient for this. DummyActivity will use these static methods to add more apps
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// to the list
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private static List<String> sAppToFreeze = new ArrayList<>();
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public static synchronized void registerAppToFreeze(String app) {
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if (!sAppToFreeze.contains(app)) {
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sAppToFreeze.add(app);
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}
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}
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public static synchronized boolean hasPendingAppToFreeze() {
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return sAppToFreeze.size() > 0;
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}
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// The actual receiver of the screen-off event
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private BroadcastReceiver mLockReceiver = new BroadcastReceiver() {
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@Override
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public void onReceive(Context context, Intent intent) {
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synchronized (FreezeService.class) {
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if (sAppToFreeze.size() > 0) {
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DevicePolicyManager dpm = getSystemService(DevicePolicyManager.class);
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ComponentName adminComponent = new ComponentName(FreezeService.this, ShelterDeviceAdminReceiver.class);
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for (String app : sAppToFreeze) {
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dpm.setApplicationHidden(adminComponent, app, true);
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}
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sAppToFreeze.clear();
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}
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unregisterReceiver(this);
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stopSelf();
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}
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}
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};
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@Override
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public void onCreate() {
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super.onCreate();
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// This is the only thing that we do
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registerReceiver(mLockReceiver, new IntentFilter(Intent.ACTION_SCREEN_OFF));
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}
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@Nullable
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@Override
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public IBinder onBind(Intent intent) {
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return null;
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}
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}
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