Issue #1084 - adding text for permission denial. (#1085)

app/src/main/java/protect/card_locker/ScanActivity.java

@@ -1,11 +1,16 @@
 package protect.card_locker;
 
+import android.Manifest;
 import android.app.Activity;
 import android.content.ActivityNotFoundException;
 import android.content.Intent;
 import android.content.pm.PackageManager;
+import android.graphics.Color;
+import android.net.Uri;
 import android.os.Bundle;
+import android.provider.Settings;
 import android.util.Log;
+import android.util.TypedValue;
 import android.view.KeyEvent;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -14,9 +19,12 @@ import android.widget.Toast;
 
 import androidx.activity.result.ActivityResultLauncher;
 import androidx.activity.result.contract.ActivityResultContracts;
+import androidx.annotation.NonNull;
 import androidx.appcompat.app.ActionBar;
 import androidx.appcompat.widget.Toolbar;
 
+import androidx.core.content.ContextCompat;
+
 import com.google.zxing.ResultPoint;
 import com.google.zxing.client.android.Intents;
 import com.journeyapps.barcodescanner.BarcodeCallback;
@@ -36,6 +44,7 @@ import protect.card_locker.databinding.ScanActivityBinding;
  * originally licensed under Apache 2.0
  */
 public class ScanActivity extends CatimaAppCompatActivity {
+
     private ScanActivityBinding binding;
     private CustomBarcodeScannerBinding customBarcodeScannerBinding;
     private static final String TAG = "Catima";
@@ -116,6 +125,8 @@ public class ScanActivity extends CatimaAppCompatActivity {
     protected void onResume() {
         super.onResume();
         capture.onResume();
+        if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED)
+            showCameraPermissionMissingText(false);
     }
 
     @Override
@@ -221,4 +232,34 @@ public class ScanActivity extends CatimaAppCompatActivity {
             Log.e(TAG, "No activity found to handle intent", e);
         }
     }
+
+    private void showCameraPermissionMissingText(boolean show) {
+        customBarcodeScannerBinding.cameraPermissionDeniedLayout.cameraPermissionDeniedClickableArea.setOnClickListener(show ? v -> {
+            navigateToSystemPermissionSetting();
+          } : null);
+          customBarcodeScannerBinding.background.setBackgroundColor(show ? obtainThemeAttribute(R.attr.colorSurface) : Color.TRANSPARENT);
+          customBarcodeScannerBinding.cameraPermissionDeniedLayout.getRoot().setVisibility(show ? View.VISIBLE : View.GONE);
+
+    }
+
+    private int obtainThemeAttribute(int attribute) {
+        TypedValue typedValue = new TypedValue();
+        getTheme().resolveAttribute(attribute, typedValue, true);
+        return typedValue.data;
+    }
+
+    private void navigateToSystemPermissionSetting() {
+        Intent permissionIntent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS, Uri.fromParts("package", getPackageName(), null));
+        permissionIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        startActivity(permissionIntent);
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
+        if (requestCode == CaptureManager.getCameraPermissionReqCode())
+            showCameraPermissionMissingText(grantResults[0] != PackageManager.PERMISSION_GRANTED);
+
+    }
+
 }

app/src/main/res/drawable/camera_permission_denied.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#BD0000"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M10.94,8.12L7.48,4.66L9,3h6l1.83,2H20c1.1,0 2,0.9 2,2v12c0,0.05 -0.01,0.1 -0.02,0.16l-5.1,-5.1C16.96,13.71 17,13.36 17,13c0,-2.76 -2.24,-5 -5,-5C11.64,8 11.29,8.04 10.94,8.12zM20.49,23.31L18.17,21H4c-1.1,0 -2,-0.9 -2,-2V7c0,-0.59 0.27,-1.12 0.68,-1.49l-2,-2L2.1,2.1l19.8,19.8L20.49,23.31zM14.49,17.32l-1.5,-1.5C12.67,15.92 12.35,16 12,16c-1.66,0 -3,-1.34 -3,-3c0,-0.35 0.08,-0.67 0.19,-0.98l-1.5,-1.5C7.25,11.24 7,12.09 7,13c0,2.76 2.24,5 5,5C12.91,18 13.76,17.75 14.49,17.32z"/>
+</vector>

app/src/main/res/layout/camera_permission_failed_layout.xml

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    app:layout_behavior="@string/appbar_scrolling_view_behavior"
+    tools:context="protect.card_locker.MainActivity"
+    tools:showIn="@layout/custom_barcode_scanner">
+
+    <LinearLayout
+        android:id="@+id/camera_permission_denied_clickable_area"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical">
+
+        <ImageView
+            android:layout_width="match_parent"
+            android:layout_height="84dp"
+            android:scaleType="fitCenter"
+            android:src="@drawable/camera_permission_denied" />
+
+        <TextView
+            style="@style/TextAppearance.Material3.HeadlineLarge"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:text="@string/cameraPermissionDeniedTitle" />
+
+        <TextView
+            style="@style/AppTheme.TextView.NoData"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:text="@string/noCameraPermissionDirectToSystemSetting" />
+    </LinearLayout>
+
+</RelativeLayout>

app/src/main/res/layout/custom_barcode_scanner.xml

@@ -19,23 +19,39 @@
         app:zxing_viewfinder_laser="@color/zxing_custom_viewfinder_laser"
         app:zxing_viewfinder_mask="@color/zxing_custom_viewfinder_mask"/>
 
-    <LinearLayout
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/background"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
         android:layout_gravity="bottom|center_horizontal"
-        android:gravity="center_horizontal"
-        android:orientation="vertical">
+        android:padding="@dimen/activity_scanner_padding">
+
+        <include
+            android:id="@+id/camera_permission_denied_layout"
+            layout="@layout/camera_permission_failed_layout"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:visibility="gone"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
 
         <Button
             android:id="@+id/add_from_image"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="@string/addFromImage" />
+            android:text="@string/addFromImage"
+            app:layout_constraintBottom_toTopOf="@+id/add_manually"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent" />
 
         <Button
             android:id="@+id/add_manually"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="@string/addManually" />
-    </LinearLayout>
+            android:text="@string/addManually"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent" />
+    </androidx.constraintlayout.widget.ConstraintLayout>
 </merge>

app/src/main/res/values-zh-rCN/strings.xml

@@ -95,6 +95,8 @@
     <string name="importOptionFilesystemTitle">从文件系统导入</string>
     <string name="exportOptionExplanation">导出的数据将储存至你选择的位置.</string>
     <string name="noExternalStoragePermissionError">在导入导出前需要获得外部储存权限</string>
+    <string name="cameraPermissionDeniedTitle">我们不能访问您的相机</string>
+    <string name="noCameraPermissionDirectToSystemSetting">Catima需要访问您的相机来扫描条形码. 轻触这里以更改您的权限设置。</string>
     <string name="exporting">导出中…</string>
     <string name="importing">导入中…</string>
     <string name="exportFailed">无法导出卡片</string>

app/src/main/res/values/dimens.xml

@@ -32,7 +32,8 @@
 
     <dimen name="activity_margin_small">8dp</dimen>
     <dimen name="activity_margin">16dp</dimen>
-
+    <!--    Padding for layouts-->
+    <dimen name="activity_scanner_padding">10dp</dimen>
     <!-- The default letter tile text size -->
     <dimen name="tileLetterFontSize">66sp</dimen>
     <dimen name="tileLetterFontSizeForShortcut">48dp</dimen>

app/src/main/res/values/strings.xml

@@ -66,6 +66,8 @@
     <string name="importing">Importing…</string>
     <string name="exporting">Exporting…</string>
     <string name="noExternalStoragePermissionError">Grant external storage permission to import or export data</string>
+    <string name="cameraPermissionDeniedTitle">We can\'t access the camera</string>
+    <string name="noCameraPermissionDirectToSystemSetting">To scan barcodes, Catima will need access to your camera. Tap here to change your permission settings.</string>
     <string name="exportOptionExplanation">The data will be written to a location of your choice.</string>
     <string name="importOptionFilesystemTitle">Import from filesystem</string>
     <string name="importOptionFilesystemExplanation">Choose a specific file from the filesystem.</string>