Merge "Revert "Delete "background process limit" debug option"" into main (075abe91) · Commits · e / os / android_packages_apps_Settings

res/xml/development_settings.xml

+6 −0

Original line number	Diff line number	Diff line
		@@ -675,6 +675,12 @@
		android:title="@string/immediately_destroy_activities"
		android:summary="@string/immediately_destroy_activities_summary" />

		<ListPreference
		android:key="app_process_limit"
		android:title="@string/app_process_limit_title"
		android:entries="@array/app_process_limit_entries"
		android:entryValues="@array/app_process_limit_values" />

		<Preference
		android:key="background_check"
		android:fragment="com.android.settings.applications.appops.BackgroundCheckSummary"

src/com/android/settings/development/BackgroundProcessLimitPreferenceController.java

0 → 100644

+104 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2017 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package com.android.settings.development;

		import android.app.ActivityManager;
		import android.app.IActivityManager;
		import android.content.Context;
		import android.os.RemoteException;

		import androidx.annotation.VisibleForTesting;
		import androidx.preference.ListPreference;
		import androidx.preference.Preference;

		import com.android.settings.core.PreferenceControllerMixin;
		import com.android.settingslib.R;
		import com.android.settingslib.development.DeveloperOptionsPreferenceController;

		public class BackgroundProcessLimitPreferenceController extends
		DeveloperOptionsPreferenceController implements Preference.OnPreferenceChangeListener,
		PreferenceControllerMixin {

		private static final String APP_PROCESS_LIMIT_KEY = "app_process_limit";

		private final String[] mListValues;
		private final String[] mListSummaries;

		public BackgroundProcessLimitPreferenceController(Context context) {
		super(context);

		mListValues = context.getResources().getStringArray(R.array.app_process_limit_values);
		mListSummaries = context.getResources().getStringArray(R.array.app_process_limit_entries);
		}

		@Override
		public String getPreferenceKey() {
		return APP_PROCESS_LIMIT_KEY;
		}

		@Override
		public boolean onPreferenceChange(Preference preference, Object newValue) {
		writeAppProcessLimitOptions(newValue);
		updateAppProcessLimitOptions();
		return true;
		}

		@Override
		public void updateState(Preference preference) {
		updateAppProcessLimitOptions();
		}

		@Override
		protected void onDeveloperOptionsSwitchDisabled() {
		super.onDeveloperOptionsSwitchDisabled();
		writeAppProcessLimitOptions(null);
		}

		private void updateAppProcessLimitOptions() {
		try {
		final int limit = getActivityManagerService().getProcessLimit();
		int index = 0; // default
		for (int i = 0; i < mListValues.length; i++) {
		int val = Integer.parseInt(mListValues[i]);
		if (val >= limit) {
		index = i;
		break;
		}
		}
		final ListPreference listPreference = (ListPreference) mPreference;
		listPreference.setValue(mListValues[index]);
		listPreference.setSummary(mListSummaries[index]);
		} catch (RemoteException e) {
		// intentional no-op
		}
		}

		private void writeAppProcessLimitOptions(Object newValue) {
		try {
		final int limit = newValue != null ? Integer.parseInt(newValue.toString()) : -1;
		getActivityManagerService().setProcessLimit(limit);
		updateAppProcessLimitOptions();
		} catch (RemoteException e) {
		// intentional no-op
		}
		}

		@VisibleForTesting
		IActivityManager getActivityManagerService() {
		return ActivityManager.getService();
		}
		}

src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java

+1 −0

Original line number	Diff line number	Diff line
		@@ -740,6 +740,7 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
		controllers.add(new StrictModePreferenceController(context));
		controllers.add(new ProfileGpuRenderingPreferenceController(context));
		controllers.add(new KeepActivitiesPreferenceController(context));
		controllers.add(new BackgroundProcessLimitPreferenceController(context));
		controllers.add(new CachedAppsFreezerPreferenceController(context));
		controllers.add(new ShowFirstCrashDialogPreferenceController(context));
		controllers.add(new AppsNotRespondingPreferenceController(context));

tests/robotests/src/com/android/settings/development/BackgroundProcessLimitPreferenceControllerTest.java

0 → 100644

+132 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2017 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package com.android.settings.development;

		import static org.mockito.Mockito.doReturn;
		import static org.mockito.Mockito.spy;
		import static org.mockito.Mockito.verify;
		import static org.mockito.Mockito.when;

		import android.app.IActivityManager;
		import android.content.Context;
		import android.os.RemoteException;

		import androidx.preference.ListPreference;
		import androidx.preference.PreferenceScreen;

		import org.junit.Before;
		import org.junit.Test;
		import org.junit.runner.RunWith;
		import org.mockito.Mock;
		import org.mockito.MockitoAnnotations;
		import org.robolectric.RobolectricTestRunner;
		import org.robolectric.RuntimeEnvironment;

		@RunWith(RobolectricTestRunner.class)
		public class BackgroundProcessLimitPreferenceControllerTest {

		@Mock
		private IActivityManager mActivityManager;
		@Mock
		private ListPreference mPreference;
		@Mock
		private PreferenceScreen mScreen;

		/**
		* 0: Standard limit
		* 1: No Background processes
		* 2: At most 1 process
		* 3: At most 2 processes
		* 4: At most 3 processes
		* 5: At most 4 processes
		*/
		private String[] mListValues;
		private String[] mListSummaries;
		private Context mContext;
		private BackgroundProcessLimitPreferenceController mController;

		@Before
		public void setup() {
		MockitoAnnotations.initMocks(this);
		mContext = RuntimeEnvironment.application;
		mListValues = mContext.getResources()
		.getStringArray(com.android.settingslib.R.array.app_process_limit_values);
		mListSummaries = mContext.getResources()
		.getStringArray(com.android.settingslib.R.array.app_process_limit_entries);
		mController = spy(new BackgroundProcessLimitPreferenceController(mContext));
		doReturn(mActivityManager).when(mController).getActivityManagerService();
		when(mScreen.findPreference(mController.getPreferenceKey())).thenReturn(mPreference);
		mController.displayPreference(mScreen);
		}

		@Test
		public void onPreferenceChange_noBackgroundProcessSet_shouldSetToNoBackgroundProcess()
		throws RemoteException {
		mController.onPreferenceChange(mPreference, mListValues[1]);

		verify(mActivityManager).setProcessLimit(Integer.valueOf(mListValues[1]));
		}

		@Test
		public void onPreferenceChange_1ProcessSet_shouldSetTo1BackgroundProcess()
		throws RemoteException {
		mController.onPreferenceChange(mPreference, mListValues[2]);

		verify(mActivityManager).setProcessLimit(Integer.valueOf(mListValues[2]));
		}

		@Test
		public void updateState_noBackgroundProcessSet_shouldSetPreferenceToNoBackgroundProcess()
		throws RemoteException {
		when(mActivityManager.getProcessLimit()).thenReturn(Integer.valueOf(mListValues[1]));

		mController.updateState(mPreference);

		verify(mPreference).setValue(mListValues[1]);
		verify(mPreference).setSummary(mListSummaries[1]);
		}

		@Test
		public void updateState_1ProcessSet_shouldSetPreference1BackgroundProcess()
		throws RemoteException {
		when(mActivityManager.getProcessLimit()).thenReturn(Integer.valueOf(mListValues[2]));

		mController.updateState(mPreference);

		verify(mPreference).setValue(mListValues[2]);
		verify(mPreference).setSummary(mListSummaries[2]);
		}

		@Test
		public void updateState_veryHighLimit_shouldDefaultToStandardLimit() throws RemoteException {
		when(mActivityManager.getProcessLimit()).thenReturn(Integer.MAX_VALUE);

		mController.updateState(mPreference);

		verify(mPreference).setValue(mListValues[0]);
		verify(mPreference).setSummary(mListSummaries[0]);
		}

		@Test
		public void onDeveloperOptionsSwitchDisabled_shouldDisableAndResetPreference()
		throws RemoteException {
		mController.onDeveloperOptionsSwitchDisabled();

		verify(mPreference).setEnabled(false);
		verify(mActivityManager).setProcessLimit(-1);
		}
		}