Catch exception in Huawei power management setup.

briar-android/src/main/java/org/briarproject/briar/android/account/HuaweiAppLaunchView.java

@@ -4,13 +4,14 @@ package org.briarproject.briar.android.account;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
-import android.content.pm.ResolveInfo;
 import android.util.AttributeSet;
+import android.widget.Toast;
 
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.briar.R;
 
 import java.util.List;
+import java.util.logging.Logger;
 
 import javax.annotation.Nullable;
 
@@ -19,13 +20,25 @@ import androidx.annotation.UiThread;
 
 import static android.content.pm.PackageManager.MATCH_DEFAULT_ONLY;
 import static android.os.Build.VERSION.SDK_INT;
+import static android.widget.Toast.LENGTH_LONG;
+import static java.util.Arrays.asList;
+import static java.util.logging.Level.WARNING;
+import static java.util.logging.Logger.getLogger;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 @UiThread
 @NotNullByDefault
 class HuaweiAppLaunchView extends PowerView {
 
+	private static final Logger LOG =
+			getLogger(HuaweiAppLaunchView.class.getName());
+
 	private final static String PACKAGE_NAME = "com.huawei.systemmanager";
-	private final static String CLASS_NAME =
+	// First try to open StartupNormalAppListActivity
+	private final static String CLASS_NAME_1 =
+			PACKAGE_NAME + ".startupmgr.ui.StartupNormalAppListActivity";
+	// Fall back to HwPowerManagerActivity
+	private final static String CLASS_NAME_2 =
 			PACKAGE_NAME + ".power.ui.HwPowerManagerActivity";
 
 	public HuaweiAppLaunchView(Context context) {
@@ -52,9 +65,12 @@ class HuaweiAppLaunchView extends PowerView {
 		// "App launch" was introduced in EMUI 8 (Android 8.0)
 		if (SDK_INT < 26) return false;
 		PackageManager pm = context.getPackageManager();
-		List<ResolveInfo> resolveInfos = pm.queryIntentActivities(getIntent(),
+		for (Intent i : getIntents()) {
-				MATCH_DEFAULT_ONLY);
+			if (!pm.queryIntentActivities(i, MATCH_DEFAULT_ONLY).isEmpty()) {
-		return !resolveInfos.isEmpty();
+				return true;
+			}
+		}
+		return false;
 	}
 
 	@Override
@@ -65,14 +81,27 @@ class HuaweiAppLaunchView extends PowerView {
 
 	@Override
 	protected void onButtonClick() {
-		getContext().startActivity(getIntent());
+		Context context = getContext();
+		for (Intent i : getIntents()) {
+			try {
+				context.startActivity(i);
+				setChecked(true);
+				return;
+			} catch (Exception e) {
+				logException(LOG, WARNING, e);
+			}
+		}
+		Toast.makeText(context, R.string.setup_huawei_app_launch_error_toast,
+				LENGTH_LONG).show();
+		// Let the user continue with setup
 		setChecked(true);
 	}
 
-	private static Intent getIntent() {
+	private static List<Intent> getIntents() {
-		Intent intent = new Intent();
+		Intent intent1 = new Intent();
-		intent.setClassName(PACKAGE_NAME, CLASS_NAME);
+		intent1.setClassName(PACKAGE_NAME, CLASS_NAME_1);
-		return intent;
+		Intent intent2 = new Intent();
+		intent2.setClassName(PACKAGE_NAME, CLASS_NAME_2);
+		return asList(intent1, intent2);
 	}
-
 }

briar-android/src/main/res/values/strings.xml

@@ -30,6 +30,7 @@
 	<string name="setup_huawei_app_launch_text">Please tap the button below, open the \"App launch\" screen and make sure Briar is set to \"Manage manually\".</string>
 	<string name="setup_huawei_app_launch_button">Open Battery Settings</string>
 	<string name="setup_huawei_app_launch_help">If Briar is not set to \"Manage manually\" in the \"App launch\" screen, it will not be able to run in the background.</string>
+	<string name="setup_huawei_app_launch_error_toast">Could not open battery settings</string>
 	<string name="setup_xiaomi_text">To run in the background, Briar needs to be locked to the recent apps list.</string>
 	<string name="setup_xiaomi_button">Protect Briar</string>
 	<string name="setup_xiaomi_help">If Briar is not locked to the recent apps list, it will be unable to run in the background.</string>