[RRS] Activate investigation of screen_resolution in settingsstats

Define a setting string for putting data for suez/settingstats.

Bug: 234035619
Test: Manually check ScreenResolution ap in Settings can work normally.
      atest SettingsUnitTests:ScreenResolutionFragmentTest
Change-Id: Ib4622490b0f63139b47f242ebcae916edf291cea

src/com/android/settings/display/ScreenResolutionFragment.java

@@ -26,6 +26,7 @@ import android.content.res.Resources;
 import android.graphics.Point;
 import android.graphics.drawable.Drawable;
 import android.hardware.display.DisplayManager;
+import android.provider.Settings;
 import android.text.TextUtils;
 import android.view.Display;
 
@@ -56,6 +57,7 @@ public class ScreenResolutionFragment extends RadioButtonPickerFragment {
     private Resources mResources;
     private static final int FHD_INDEX = 0;
     private static final int QHD_INDEX = 1;
+    private static final String SCREEN_RESOLUTION = "user_selected_resolution";
     private Display mDefaultDisplay;
     private String[] mScreenResolutionOptions;
     private Set<Point> mResolutions;
@@ -156,8 +158,19 @@ public class ScreenResolutionFragment extends RadioButtonPickerFragment {
     /** Using display manager to set the display mode. */
     @VisibleForTesting
     public void setDisplayMode(final int width) {
+        Display.Mode mode = getPreferMode(width);
+
         mDisplayObserver.startObserve();
-        mDefaultDisplay.setUserPreferredDisplayMode(getPreferMode(width));
+
+        /** For store settings globally. */
+        /** TODO(b/238061217): Moving to an atom with the same string */
+        Settings.System.putString(
+                getContext().getContentResolver(),
+                SCREEN_RESOLUTION,
+                mode.getPhysicalWidth() + "x" + mode.getPhysicalHeight());
+
+        /** Apply the resolution change. */
+        mDefaultDisplay.setUserPreferredDisplayMode(mode);
     }
 
     /** Get the key corresponding to the resolution. */
@@ -202,7 +215,6 @@ public class ScreenResolutionFragment extends RadioButtonPickerFragment {
         if (!mDisplayObserver.setPendingResolutionChange(selectedWidth)) {
             return;
         }
-
         super.onRadioButtonClicked(selected);
     }
 

tests/unit/src/com/android/settings/display/ScreenResolutionFragmentTest.java

@@ -27,15 +27,12 @@ import android.view.Display;
 
 import androidx.test.annotation.UiThreadTest;
 import androidx.test.core.app.ApplicationProvider;
-import androidx.test.ext.junit.runners.AndroidJUnit4;
 
 import com.android.settingslib.widget.SelectorWithWidgetPreference;
 
 import org.junit.Before;
 import org.junit.Test;
-import org.junit.runner.RunWith;
 
-@RunWith(AndroidJUnit4.class)
 public class ScreenResolutionFragmentTest {
 
     private Context mContext;
@@ -56,6 +53,7 @@ public class ScreenResolutionFragmentTest {
     public void getDefaultKey_FHD() {
         Display.Mode mode = new Display.Mode(0, FHD_WIDTH, 0, 0);
         doReturn(mode).when(mFragment).getDisplayMode();
+        doReturn(mContext).when(mFragment).getContext();
 
         mFragment.onAttach(mContext);
         assertThat(mFragment.getDefaultKey()).isEqualTo(mFragment.getKeyForResolution(FHD_WIDTH));
@@ -66,6 +64,7 @@ public class ScreenResolutionFragmentTest {
     public void getDefaultKey_QHD() {
         Display.Mode mode = new Display.Mode(0, QHD_WIDTH, 0, 0);
         doReturn(mode).when(mFragment).getDisplayMode();
+        doReturn(mContext).when(mFragment).getContext();
 
         mFragment.onAttach(mContext);
         assertThat(mFragment.getDefaultKey()).isEqualTo(mFragment.getKeyForResolution(QHD_WIDTH));
@@ -74,6 +73,7 @@ public class ScreenResolutionFragmentTest {
     @Test
     @UiThreadTest
     public void setDefaultKey_FHD() {
+        doReturn(mContext).when(mFragment).getContext();
         mFragment.onAttach(mContext);
 
         mFragment.setDefaultKey(mFragment.getKeyForResolution(FHD_WIDTH));
@@ -84,6 +84,7 @@ public class ScreenResolutionFragmentTest {
     @Test
     @UiThreadTest
     public void setDefaultKey_QHD() {
+        doReturn(mContext).when(mFragment).getContext();
         mFragment.onAttach(mContext);
 
         mFragment.setDefaultKey(mFragment.getKeyForResolution(QHD_WIDTH));
@@ -94,6 +95,7 @@ public class ScreenResolutionFragmentTest {
     @Test
     @UiThreadTest
     public void bindPreferenceExtra_setSummary() {
+        doReturn(mContext).when(mFragment).getContext();
         mFragment.onAttach(mContext);
         SelectorWithWidgetPreference preference = new SelectorWithWidgetPreference(mContext);
         ScreenResolutionFragment.ScreenResolutionCandidateInfo candidates =