prefs: added PreferenceWithValue to show string

src/PreferenceWithValue.java

@@ -0,0 +1,33 @@
+package de.duenndns;
+
+import android.content.Context;
+import android.preference.Preference;
+import android.util.AttributeSet;
+import android.view.View;
+
+public class PreferenceWithValue extends Preference {
+	CharSequence mSummary;
+
+	public PreferenceWithValue(Context context, AttributeSet attrs) {
+		super(context, attrs);
+	}
+
+	public PreferenceWithValue(Context context) {
+		super(context);
+	}
+
+	private void setSummaryToText(String text) {
+		if (mSummary == null)
+			mSummary = getSummary();
+		if (text == null || text.length() == 0)
+			setSummary(mSummary);
+		else
+			setSummary(mSummary + ": " + text);
+	}
+	@Override
+	protected void onBindView(View view) {
+		super.onBindView(view);
+		setSummaryToText(getSharedPreferences().getString(getKey(), ""));
+	}
+
+}