Show last updated time

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

@@ -20,6 +20,8 @@ package eu.faircode.email;
 */
 
 import android.content.Context;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
 import android.graphics.Paint;
 import android.net.Uri;
 import android.os.Bundle;
@@ -39,6 +41,7 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.core.widget.TextViewCompat;
 
+import java.text.DateFormat;
 import java.util.List;
 
 public class FragmentAbout extends FragmentBase {
@@ -52,6 +55,7 @@ public class FragmentAbout extends FragmentBase {
 
         TextView tvVersion = view.findViewById(R.id.tvVersion);
         TextView tvRelease = view.findViewById(R.id.tvRelease);
+        TextView tvUpdated = view.findViewById(R.id.tvUpdated);
         ImageButton ibUpdate = view.findViewById(R.id.ibUpdate);
         TextView tvGplV3 = view.findViewById(R.id.tvGplV3);
         LinearLayout llContributors = view.findViewById(R.id.llContributors);
@@ -59,6 +63,18 @@ public class FragmentAbout extends FragmentBase {
         tvVersion.setText(getString(R.string.title_version, BuildConfig.VERSION_NAME));
         tvRelease.setText(BuildConfig.RELEASE_NAME);
 
+        long last = 0;
+        try {
+            PackageManager pm = getContext().getPackageManager();
+            PackageInfo pi = pm.getPackageInfo(BuildConfig.APPLICATION_ID, 0);
+            last = pi.lastUpdateTime;
+        } catch (Throwable ex) {
+            Log.e(ex);
+        }
+
+        DateFormat DF = Helper.getDateTimeInstance(getContext(), DateFormat.SHORT, DateFormat.SHORT);
+        tvUpdated.setText(getString(R.string.app_updated, last == 0 ? "-" : DF.format(last)));
+
         ibUpdate.setVisibility(
                 Helper.hasValidFingerprint(getContext()) || BuildConfig.DEBUG
                         ? View.VISIBLE : View.GONE);

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

@@ -34,16 +34,28 @@
         app:layout_constraintStart_toEndOf="@id/tvVersion"
         app:layout_constraintTop_toTopOf="@id/tvVersion" />
 
+    <eu.faircode.email.FixedTextView
+        android:id="@+id/tvUpdated"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="12dp"
+        android:text="@string/app_updated"
+        android:textAppearance="@style/TextAppearance.AppCompat.Small"
+        app:layout_constraintEnd_toStartOf="@+id/ibUpdate"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/tvRelease" />
+
     <eu.faircode.email.FixedTextView
         android:id="@+id/tvCopyright"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
         android:layout_marginStart="12dp"
+        android:layout_marginTop="12dp"
         android:text="@string/app_copyright"
         android:textAppearance="@style/TextAppearance.AppCompat.Small"
         app:layout_constraintEnd_toStartOf="@+id/ibUpdate"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/tvVersion" />
+        app:layout_constraintTop_toBottomOf="@id/tvUpdated" />
 
     <ImageButton
         android:id="@+id/ibUpdate"
@@ -54,7 +66,7 @@
         android:contentDescription="@string/title_more"
         android:padding="6dp"
         android:scaleType="fitCenter"
-        app:layout_constraintBottom_toBottomOf="@+id/tvCopyright"
+        app:layout_constraintBottom_toBottomOf="@+id/tvUpdated"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintTop_toTopOf="@id/tvVersion"
         app:srcCompat="@drawable/twotone_cached_24" />

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

@@ -9,6 +9,7 @@
     <string name="app_crash">FairEmail is not supported on this device because bugs in Android cause crashes</string>
     <string name="app_exit">Go \'back\' again to exit</string>
     <string name="app_cake">Insufficient storage space left</string>
+    <string name="app_updated">Last update: %1$s</string>
 
     <string name="channel_service">Receive</string>
     <string name="channel_send">Send</string>