fix: reduce camera selector button padding by 50%

- switch from weight-based stretch to wrap_content
   - use compact 8x4dp padding for camera buttons

Author: ystinia

app/src/main/java/com/openipc/decoder/Decoder.java

@@ -364,8 +364,7 @@ private void createMenu(View menu) {
         // camera slot selector: horizontal row [1] [2] [3] [4]
         LinearLayout camRow = new LinearLayout(this);
         camRow.setOrientation(LinearLayout.HORIZONTAL);
-        layout.addView(camRow, new LinearLayout.LayoutParams(
-                LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
+        layout.addView(camRow);
 
         LinearLayout header = new LinearLayout(this);
         header.setOrientation(LinearLayout.VERTICAL);
@@ -400,9 +399,8 @@ private void createMenu(View menu) {
             final int slot = i;
             camButtons[i] = createItem(String.valueOf(i + 1));
             camButtons[i].setGravity(Gravity.CENTER);
-            LinearLayout.LayoutParams camBtnParams = new LinearLayout.LayoutParams(
-                    0, LinearLayout.LayoutParams.WRAP_CONTENT, 1f);
-            camRow.addView(camButtons[i], camBtnParams);
+            camButtons[i].setPadding(dp(8), dp(4), dp(8), dp(4));
+            camRow.addView(camButtons[i]);
 
             if (i == mActive) highlightItem(camButtons[i]);