Add about dialog with license info

1 files changed, 33 insertions, 0 deletions

diff --git a/src/eu/siacs/conversations/ui/AboutDialog.java b/src/eu/siacs/conversations/ui/AboutDialog.java
new file mode 100644
index 00000000..994d1bd9
--- /dev/null
+++ b/src/eu/siacs/conversations/ui/AboutDialog.java
@@ -0,0 +1,33 @@
+package eu.siacs.conversations.ui;
+
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.preference.DialogPreference;
+import android.util.AttributeSet;
+
+public class AboutDialog extends DialogPreference {
+	public AboutDialog(final Context context, final AttributeSet attrs, final int defStyle) {
+		super(context, attrs, defStyle);
+		setSummary();
+	}
+
+	public AboutDialog(final Context context, final AttributeSet attrs) {
+		super(context, attrs);
+		setSummary();
+	}
+
+	private void setSummary() {
+		if (getContext() != null &&getContext().getPackageManager() != null) {
+			final String packageName = getContext().getPackageName();
+			final String versionName;
+			try {
+				versionName = getContext().getPackageManager().getPackageInfo(packageName, 0).versionName;
+				setSummary("Conversations " + versionName);
+			} catch (final PackageManager.NameNotFoundException e) {
+				// Using try/catch as part of the logic is sort of like this:
+				// https://xkcd.com/292/
+			}
+		}
+	}
+}
+