Add generic functions to show a message in dialog and exit app with an error message

app/src/main/java/com/termux/app/TermuxInstaller.java

@@ -12,6 +12,7 @@ import android.view.WindowManager;
 
 import com.termux.R;
 import com.termux.shared.file.FileUtils;
+import com.termux.shared.interact.DialogUtils;
 import com.termux.shared.logger.Logger;
 import com.termux.shared.termux.TermuxConstants;
 
@@ -57,8 +58,9 @@ final class TermuxInstaller {
         if (!isPrimaryUser) {
             String bootstrapErrorMessage = activity.getString(R.string.bootstrap_error_not_primary_user_message, TermuxConstants.TERMUX_PREFIX_DIR_PATH);
             Logger.logError(LOG_TAG, bootstrapErrorMessage);
-            new AlertDialog.Builder(activity).setTitle(R.string.bootstrap_error_title).setMessage(bootstrapErrorMessage)
-                .setOnDismissListener(dialog -> System.exit(0)).setPositiveButton(android.R.string.ok, null).show();
+            DialogUtils.exitAppWithErrorMessage(activity,
+                activity.getString(R.string.bootstrap_error_title),
+                bootstrapErrorMessage);
             return;
         }
 

termux-shared/build.gradle

@@ -5,6 +5,7 @@ android {
     compileSdkVersion project.properties.compileSdkVersion.toInteger()
 
     dependencies {
+        implementation 'androidx.appcompat:appcompat:1.2.0'
         implementation "androidx.annotation:annotation:1.2.0"
         implementation "androidx.core:core:1.5.0-rc01"
         implementation "com.google.guava:guava:24.1-jre"

termux-shared/src/main/java/com/termux/shared/interact/DialogUtils.java

@@ -2,13 +2,19 @@ package com.termux.shared.interact;
 
 import android.app.Activity;
 import android.app.AlertDialog;
+import android.content.Context;
 import android.content.DialogInterface;
 import android.text.Selection;
 import android.util.TypedValue;
 import android.view.KeyEvent;
+import android.view.LayoutInflater;
+import android.view.View;
 import android.view.ViewGroup.LayoutParams;
 import android.widget.EditText;
 import android.widget.LinearLayout;
+import android.widget.TextView;
+
+import com.termux.shared.R;
 
 public final class DialogUtils {
 
@@ -61,11 +67,41 @@ public final class DialogUtils {
             builder.setNegativeButton(negativeButtonText, (dialog, which) -> onNegative.onTextSet(input.getText().toString()));
         }
 
-        if (onDismiss != null) builder.setOnDismissListener(onDismiss);
+        if (onDismiss != null)
+            builder.setOnDismissListener(onDismiss);
 
         dialogHolder[0] = builder.create();
         dialogHolder[0].setCanceledOnTouchOutside(false);
         dialogHolder[0].show();
     }
 
+    public static void showMessage(Context context, String titleText, String messageText, final DialogInterface.OnDismissListener onDismiss) {
+
+        AlertDialog.Builder builder = new AlertDialog.Builder(context, R.style.Theme_AppCompat_Light_Dialog)
+            .setPositiveButton(android.R.string.ok, null);
+
+        LayoutInflater inflater = (LayoutInflater) context.getSystemService( Context.LAYOUT_INFLATER_SERVICE );
+        View view = inflater.inflate(R.layout.dialog_show_message, null);
+        if (view != null) {
+            builder.setView(view);
+
+            TextView titleView = view.findViewById(R.id.dialog_title);
+            if (titleView != null)
+                titleView.setText(titleText);
+
+            TextView messageView = view.findViewById(R.id.dialog_message);
+            if (messageView != null)
+                messageView.setText(messageText);
+        }
+
+        if (onDismiss != null)
+            builder.setOnDismissListener(onDismiss);
+
+        builder.show();
+    }
+
+    public static void exitAppWithErrorMessage(Context context, String titleText, String messageText) {
+        showMessage(context, titleText, messageText, dialog -> System.exit(0));
+    }
+
 }

termux-shared/src/main/res/layout/dialog_show_message.xml

@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical">
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="@color/dark_red"
+        android:paddingStart="24dp"
+        android:paddingTop="16dp"
+        android:paddingEnd="24dp"
+        android:paddingBottom="16dp">
+        <TextView
+            android:id="@+id/dialog_title"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textAppearance="@style/TextAppearance.AppCompat.Title"
+            android:textColor="@android:color/white"/>
+    </LinearLayout>
+
+    <ScrollView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content" >
+        <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:paddingStart="24dp"
+                android:paddingTop="16dp"
+                android:paddingEnd="24dp"
+                android:paddingBottom="16dp"
+                android:scrollbars="vertical">
+            <TextView
+                android:id="@+id/dialog_message"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:textSize="14sp"
+                android:textColor="@android:color/tab_indicator_text"/>
+        </LinearLayout>
+    </ScrollView>
+
+</LinearLayout>
+
+
+
+
+

termux-shared/src/main/res/values/colors.xml

@@ -2,4 +2,5 @@
 <resources>
     <color name="background_markdown_code_inline">#1F000000</color>
     <color name="background_markdown_code_block">#0F000000</color>
+    <color name="dark_red">#FF0000</color>
 </resources>