Allow adding/changing contacts

Fixes #103

app/src/main/java/eu/faircode/email/FragmentMessage.java

@@ -24,6 +24,7 @@ import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.database.Cursor;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.graphics.Typeface;
@@ -79,6 +80,9 @@ import java.util.Date;
 import java.util.List;
 import java.util.Locale;
 
+import javax.mail.Address;
+import javax.mail.internet.InternetAddress;
+
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
@@ -98,6 +102,7 @@ public class FragmentMessage extends FragmentEx {
     private ImageView ivFlagged;
     private ImageView ivAvatar;
     private TextView tvFrom;
+    private ImageView ivContactAdd;
     private TextView tvTime;
     private TextView tvCount;
     private TextView tvTo;
@@ -158,6 +163,7 @@ public class FragmentMessage extends FragmentEx {
         ivFlagged = view.findViewById(R.id.ivFlagged);
         ivAvatar = view.findViewById(R.id.ivAvatar);
         tvFrom = view.findViewById(R.id.tvFrom);
+        ivContactAdd = view.findViewById(R.id.ivContactAdd);
         tvTime = view.findViewById(R.id.tvTime);
         tvCount = view.findViewById(R.id.tvCount);
         tvTo = view.findViewById(R.id.tvTo);
@@ -213,6 +219,56 @@ public class FragmentMessage extends FragmentEx {
             }
         });
 
+        ivContactAdd.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                for (Address address : message.from) {
+                    InternetAddress ia = (InternetAddress) address;
+                    String name = ia.getPersonal();
+                    String email = ia.getAddress();
+
+                    // https://developer.android.com/training/contacts-provider/modify-data
+                    Intent edit = new Intent();
+                    if (!TextUtils.isEmpty(name))
+                        edit.putExtra(ContactsContract.Intents.Insert.NAME, name);
+                    if (!TextUtils.isEmpty(email))
+                        edit.putExtra(ContactsContract.Intents.Insert.EMAIL, email);
+
+                    Cursor cursor = null;
+                    try {
+                        ContentResolver resolver = getContext().getContentResolver();
+                        cursor = resolver.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI,
+                                new String[]{
+                                        ContactsContract.CommonDataKinds.Photo.CONTACT_ID,
+                                        ContactsContract.Contacts.LOOKUP_KEY
+                                },
+                                ContactsContract.CommonDataKinds.Email.ADDRESS + " = ?",
+                                new String[]{email}, null);
+                        if (cursor.moveToNext()) {
+                            int colContactId = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Photo.CONTACT_ID);
+                            int colLookupKey = cursor.getColumnIndex(ContactsContract.Contacts.LOOKUP_KEY);
+
+                            long contactId = cursor.getLong(colContactId);
+                            String lookupKey = cursor.getString(colLookupKey);
+
+                            Uri lookupUri = ContactsContract.Contacts.getLookupUri(contactId, lookupKey);
+
+                            edit.setAction(Intent.ACTION_EDIT);
+                            edit.setDataAndType(lookupUri, ContactsContract.Contacts.CONTENT_ITEM_TYPE);
+                        } else {
+                            edit.setAction(Intent.ACTION_INSERT);
+                            edit.setType(ContactsContract.Contacts.CONTENT_TYPE);
+                        }
+                    } finally {
+                        if (cursor != null)
+                            cursor.close();
+                    }
+
+                    startActivity(edit);
+                }
+            }
+        });
+
         tvBody.setMovementMethod(new LinkMovementMethod() {
             public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) {
                 if (event.getAction() != MotionEvent.ACTION_UP)
@@ -446,6 +502,13 @@ public class FragmentMessage extends FragmentEx {
             ivAvatar.setImageDrawable(Drawable.createFromStream(is, "avatar"));
         }
 
+        if (message.from == null) {
+            ViewGroup.LayoutParams lp = ivContactAdd.getLayoutParams();
+            lp.height = 0;
+            lp.width = 0;
+            ivContactAdd.setLayoutParams(lp);
+        }
+
         pbWait.setVisibility(View.GONE);
 
         grpHeader.setVisibility(free ? View.GONE : View.VISIBLE);

app/src/main/res/drawable/baseline_import_contacts_24.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0"
+        android:tint="?attr/colorControlNormal">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M21,5c-1.11,-0.35 -2.33,-0.5 -3.5,-0.5 -1.95,0 -4.05,0.4 -5.5,1.5 -1.45,-1.1 -3.55,-1.5 -5.5,-1.5S2.45,4.9 1,6v14.65c0,0.25 0.25,0.5 0.5,0.5 0.1,0 0.15,-0.05 0.25,-0.05C3.1,20.45 5.05,20 6.5,20c1.95,0 4.05,0.4 5.5,1.5 1.35,-0.85 3.8,-1.5 5.5,-1.5 1.65,0 3.35,0.3 4.75,1.05 0.1,0.05 0.15,0.05 0.25,0.05 0.25,0 0.5,-0.25 0.5,-0.5L23,6c-0.6,-0.45 -1.25,-0.75 -2,-1zM21,18.5c-1.1,-0.35 -2.3,-0.5 -3.5,-0.5 -1.7,0 -4.15,0.65 -5.5,1.5L12,8c1.35,-0.85 3.8,-1.5 5.5,-1.5 1.2,0 2.4,0.15 3.5,0.5v11.5z"/>
+</vector>

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

@@ -46,10 +46,21 @@
         android:text="From"
         android:textAppearance="@style/TextAppearance.AppCompat.Medium"
         android:textIsSelectable="true"
-        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/ivContactAdd"
         app:layout_constraintStart_toEndOf="@id/ivAvatar"
         app:layout_constraintTop_toTopOf="parent" />
 
+    <ImageView
+        android:id="@+id/ivContactAdd"
+        android:layout_width="24dp"
+        android:layout_height="24dp"
+        android:layout_marginEnd="6dp"
+        android:layout_marginStart="6dp"
+        android:src="@drawable/baseline_import_contacts_24"
+        app:layout_constraintBottom_toBottomOf="@id/spFrom"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="@id/tvFrom" />
+
     <TextView
         android:id="@+id/tvTime"
         android:layout_width="0dp"
@@ -390,7 +401,7 @@
         android:id="@+id/grpHeader"
         android:layout_width="0dp"
         android:layout_height="0dp"
-        app:constraint_referenced_ids="ivFlagged,ivAvatar,tvFrom,tvToTitle,tvTo,tvSize,tvTime,tvSubject" />
+        app:constraint_referenced_ids="ivFlagged,ivAvatar,tvFrom,ivContactAdd,tvToTitle,tvTo,tvSize,tvTime,tvSubject" />
 
     <androidx.constraintlayout.widget.Group
         android:id="@+id/grpThread"