标签文字颜色和背景支持设置颜色值；修复已知bug。

Author: 梁任彦

labels/src/main/java/com/donkingliang/labels/LabelsView.java

@@ -3,6 +3,7 @@
 import android.content.Context;
 import android.content.res.ColorStateList;
 import android.content.res.TypedArray;
+import android.graphics.Color;
 import android.graphics.drawable.ColorDrawable;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
@@ -119,7 +120,12 @@ private void getAttrs(Context context, AttributeSet attrs) {
             mLineMargin = mTypedArray.getDimensionPixelOffset(R.styleable.labels_view_lineMargin, 0);
             mWordMargin = mTypedArray.getDimensionPixelOffset(R.styleable.labels_view_wordMargin, 0);
             int labelBgResId = mTypedArray.getResourceId(R.styleable.labels_view_labelBackground, 0);
-            mLabelBg = getResources().getDrawable(labelBgResId);
+            if (labelBgResId != 0) {
+                mLabelBg = getResources().getDrawable(labelBgResId);
+            } else {
+                int labelBgColor = mTypedArray.getColor(R.styleable.labels_view_labelBackground, Color.TRANSPARENT);
+                mLabelBg = new ColorDrawable(labelBgColor);
+            }
             mTypedArray.recycle();
         }
     }

labels/src/main/res/values/attr.xml

@@ -7,15 +7,15 @@
             <enum name="SINGLE_IRREVOCABLY" value="3" />
             <enum name="MULTI" value="4" />
         </attr>
-        <attr name="maxSelect" format="integer"/>
-        <attr name="labelTextColor" format="reference" />
+        <attr name="maxSelect" format="integer" />
+        <attr name="labelTextColor" format="reference|color" />
         <attr name="labelTextSize" format="dimension" />
         <attr name="labelTextPaddingLeft" format="dimension" />
         <attr name="labelTextPaddingTop" format="dimension" />
         <attr name="labelTextPaddingRight" format="dimension" />
         <attr name="labelTextPaddingBottom" format="dimension" />
         <attr name="lineMargin" format="dimension" />
         <attr name="wordMargin" format="dimension" />
-        <attr name="labelBackground" format="reference" />
+        <attr name="labelBackground" format="reference|color" />
     </declare-styleable>
 </resources>