Show instructions for locking Briar to the Xiaomi recent apps list.

briar-android/src/main/AndroidManifest.xml

@@ -104,8 +104,7 @@
 
 		<activity
 			android:name="org.briarproject.briar.android.account.SetupActivity"
-			android:label="@string/setup_title"
-			android:windowSoftInputMode="adjustResize|stateAlwaysVisible" />
+			android:label="@string/setup_title" />
 
 		<activity
 			android:name="org.briarproject.briar.android.splash.SplashScreenActivity"

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

@@ -32,6 +32,7 @@ public class DozeFragment extends SetupFragment
 	private DozeView dozeView;
 	private HuaweiProtectedAppsView huaweiProtectedAppsView;
 	private HuaweiAppLaunchView huaweiAppLaunchView;
+	private XiaomiView xiaomiView;
 	private Button next;
 	private boolean secondAttempt = false;
 
@@ -53,6 +54,8 @@ public class DozeFragment extends SetupFragment
 		huaweiProtectedAppsView.setOnCheckedChangedListener(this);
 		huaweiAppLaunchView = v.findViewById(R.id.huaweiAppLaunchView);
 		huaweiAppLaunchView.setOnCheckedChangedListener(this);
+		xiaomiView = v.findViewById(R.id.xiaomiView);
+		xiaomiView.setOnCheckedChangedListener(this);
 		next = v.findViewById(R.id.next);
 		ProgressBar progressBar = v.findViewById(R.id.progress);
 
@@ -98,7 +101,8 @@ public class DozeFragment extends SetupFragment
 	public void onCheckedChanged() {
 		next.setEnabled(dozeView.isChecked() &&
 				huaweiProtectedAppsView.isChecked() &&
-				huaweiAppLaunchView.isChecked());
+				huaweiAppLaunchView.isChecked() &&
+				xiaomiView.isChecked());
 	}
 
 	@SuppressLint("BatteryLife")

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

@@ -10,6 +10,7 @@ class DozeHelperImpl implements DozeHelper {
 		Context appContext = context.getApplicationContext();
 		return needsDozeWhitelisting(appContext) ||
 				HuaweiProtectedAppsView.needsToBeShown(appContext) ||
-				HuaweiAppLaunchView.needsToBeShown(appContext);
+				HuaweiAppLaunchView.needsToBeShown(appContext) ||
+				XiaomiView.isXiaomiOrRedmiDevice();
 	}
 }

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

@@ -20,6 +20,9 @@ import static android.content.Intent.FLAG_ACTIVITY_CLEAR_TASK;
 import static android.content.Intent.FLAG_ACTIVITY_CLEAR_TOP;
 import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK;
 import static android.content.Intent.FLAG_ACTIVITY_TASK_ON_HOME;
+import static android.view.WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE;
+import static android.view.WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE;
+import static android.view.WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN;
 import static org.briarproject.briar.android.BriarApplication.ENTRY_ACTIVITY;
 import static org.briarproject.briar.android.account.SetupViewModel.State.AUTHOR_NAME;
 import static org.briarproject.briar.android.account.SetupViewModel.State.CREATED;
@@ -55,10 +58,13 @@ public class SetupActivity extends BaseActivity
 
 	private void onStateChanged(SetupViewModel.State state) {
 		if (state == AUTHOR_NAME) {
+			showKeyboard();
 			showInitialFragment(AuthorNameFragment.newInstance());
 		} else if (state == SET_PASSWORD) {
+			showKeyboard();
 			showPasswordFragment();
 		} else if (state == DOZE) {
+			hideKeyboard();
 			showDozeFragment();
 		} else if (state == CREATED || state == FAILED) {
 			// TODO: Show an error if failed
@@ -84,6 +90,16 @@ public class SetupActivity extends BaseActivity
 		overridePendingTransition(R.anim.screen_new_in, R.anim.screen_old_out);
 	}
 
+	private void showKeyboard() {
+		getWindow().setSoftInputMode(SOFT_INPUT_ADJUST_RESIZE |
+				SOFT_INPUT_STATE_ALWAYS_VISIBLE);
+	}
+
+	private void hideKeyboard() {
+		getWindow().setSoftInputMode(SOFT_INPUT_ADJUST_RESIZE |
+				SOFT_INPUT_STATE_HIDDEN);
+	}
+
 	@Override
 	@Deprecated
 	public void runOnDbThread(Runnable runnable) {

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

@@ -0,0 +1,74 @@
+package org.briarproject.briar.android.account;
+
+
+import android.content.Context;
+import android.util.AttributeSet;
+
+import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.briar.R;
+
+import javax.annotation.Nullable;
+
+import androidx.annotation.StringRes;
+import androidx.annotation.UiThread;
+
+import static android.os.Build.BRAND;
+import static org.briarproject.bramble.util.AndroidUtils.getSystemProperty;
+import static org.briarproject.bramble.util.StringUtils.isNullOrEmpty;
+import static org.briarproject.briar.android.util.UiUtils.showOnboardingDialog;
+
+@UiThread
+@NotNullByDefault
+class XiaomiView extends PowerView {
+
+	public XiaomiView(Context context) {
+		this(context, null);
+	}
+
+	public XiaomiView(Context context, @Nullable AttributeSet attrs) {
+		this(context, attrs, 0);
+	}
+
+	public XiaomiView(Context context, @Nullable AttributeSet attrs,
+			int defStyleAttr) {
+		super(context, attrs, defStyleAttr);
+		setText(R.string.setup_xiaomi_text);
+		setButtonText(R.string.setup_xiaomi_button);
+	}
+
+	@Override
+	public boolean needsToBeShown() {
+		return isXiaomiOrRedmiDevice();
+	}
+
+	public static boolean isXiaomiOrRedmiDevice() {
+		return "Xiaomi".equalsIgnoreCase(BRAND) ||
+				"Redmi".equalsIgnoreCase(BRAND);
+	}
+
+	@Override
+	@StringRes
+	protected int getHelpText() {
+		return R.string.setup_xiaomi_help;
+	}
+
+	@Override
+	protected void onButtonClick() {
+		int bodyRes = isMiuiTenOrLater()
+				? R.string.setup_xiaomi_dialog_body_new
+				: R.string.setup_xiaomi_dialog_body_old;
+		showOnboardingDialog(getContext(), getContext().getString(bodyRes));
+		setChecked(true);
+	}
+
+	private boolean isMiuiTenOrLater() {
+		String version = getSystemProperty("ro.miui.ui.version.name");
+		if (isNullOrEmpty(version)) return false;
+		version = version.replaceAll("[^\\d]", "");
+		try {
+			return Integer.parseInt(version) >= 10;
+		} catch (NumberFormatException e) {
+			return false;
+		}
+	}
+}

briar-android/src/main/res/layout/fragment_setup_doze.xml

@@ -38,6 +38,15 @@
 			app:layout_constraintStart_toStartOf="parent"
 			app:layout_constraintTop_toBottomOf="@+id/huaweiProtectedAppsView" />
 
+		<org.briarproject.briar.android.account.XiaomiView
+			android:id="@+id/xiaomiView"
+			android:layout_width="match_parent"
+			android:layout_height="wrap_content"
+			android:paddingBottom="@dimen/margin_large"
+			app:layout_constraintEnd_toEndOf="parent"
+			app:layout_constraintStart_toStartOf="parent"
+			app:layout_constraintTop_toBottomOf="@+id/huaweiAppLaunchView" />
+
 		<Button
 			android:id="@+id/next"
 			style="@style/BriarButton"
@@ -48,7 +57,7 @@
 			app:layout_constraintBottom_toBottomOf="parent"
 			app:layout_constraintEnd_toEndOf="parent"
 			app:layout_constraintStart_toStartOf="parent"
-			app:layout_constraintTop_toBottomOf="@+id/huaweiAppLaunchView"
+			app:layout_constraintTop_toBottomOf="@+id/xiaomiView"
 			app:layout_constraintVertical_bias="1.0"
 			tools:enabled="true" />
 

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

@@ -30,6 +30,11 @@
 	<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_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>
+	<string name="setup_xiaomi_dialog_body_old">1. Open the recent apps list (also called the app switcher)\n\n2. Swipe down on the image of Briar to show the padlock icon\n\n3. If the padlock is not locked, tap to lock it</string>
+	<string name="setup_xiaomi_dialog_body_new">1. Open the recent apps list (also called the app switcher)\n\n2. Press and hold the image of Briar until the padlock button appears\n\n3. If the padlock is not locked, tap to lock it</string>
 	<string name="warning_dozed">%s was unable to run in the background</string>
 
 	<!-- Login -->