1 files changed, 93 insertions, 0 deletions
diff --git a/main/src/cgeo/geocaching/settings/NumberPickerPreference.java b/main/src/cgeo/geocaching/settings/NumberPickerPreference.java
new file mode 100644
index 0000000..273b7d3
--- /dev/null
+++ b/main/src/cgeo/geocaching/settings/NumberPickerPreference.java
@@ -0,0 +1,93 @@
+package cgeo.geocaching.settings;
+
+import cgeo.geocaching.R;
+
+import org.apache.commons.lang3.StringUtils;
+
+import android.content.Context;
+import android.preference.DialogPreference;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+
+public class NumberPickerPreference extends DialogPreference {
+
+    private EditText editText;
+
+    public NumberPickerPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public NumberPickerPreference(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    @Override
+    protected void onBindDialogView(View view) {
+        String msg = (String) this.getDialogMessage();
+        if (StringUtils.isNotBlank(msg)) {
+            TextView tv = (TextView) view.findViewById(R.id.number_picker_message);
+            tv.setText(msg);
+        }
+
+        editText = (EditText) view.findViewById(R.id.number_picker_input);
+        setValue(getPersistedInt(0));
+
+        Button minus = (Button) view.findViewById(R.id.number_picker_minus);
+        Button plus = (Button) view.findViewById(R.id.number_picker_plus);
+
+        minus.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View button) {
+                Integer value = getValue();
+                if (value != null) {
+                    setValue(--value);
+                }
+            }
+        });
+
+        plus.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View button) {
+                Integer value = getValue();
+                if (value != null) {
+                    setValue(++value);
+                }
+            }
+        });
+
+        super.onBindDialogView(view);
+    }
+
+    private Integer getValue() {
+        try {
+            return Integer.parseInt(editText.getText().toString());
+        } catch (NumberFormatException e) {
+            return null;
+        }
+    }
+
+    private void setValue(final int value) {
+        int v = value;
+        if (v <= 0) {
+            v = 0;
+        } else if (v > Integer.MAX_VALUE) {
+            v = Integer.MAX_VALUE;
+        }
+        editText.setText(String.valueOf(v));
+    }
+
+    @Override
+    protected void onDialogClosed(boolean positiveResult) {
+        if (positiveResult) {
+            Integer value = getValue();
+            if (value != null) {
+                persistInt(value);
+                callChangeListener(value);
+            }
+        }
+        super.onDialogClosed(positiveResult);
+    }
+}