修复未设置EndDrawable出现的无法结束loading的错误，

修复无文字时的错误

Author: FlodCoding

Loadingbutton-support/build.gradle

@@ -7,8 +7,8 @@ android {
     defaultConfig {
         minSdkVersion 17
         targetSdkVersion 28
-        versionCode 102
-        versionName "1.0.2"
+        versionCode 103
+        versionName "1.0.3"
     }
 
     buildTypes {

Loadingbutton-support/src/main/java/com/flod/loadingbutton/DrawableTextView.java

@@ -10,10 +10,10 @@
 import android.support.annotation.Nullable;
 import android.support.annotation.Px;
 import android.support.v7.widget.AppCompatTextView;
+import android.text.TextUtils;
 import android.util.AttributeSet;
 import android.view.Gravity;
 
-
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.util.Arrays;
@@ -134,16 +134,19 @@ protected void onDraw(Canvas canvas) {
 
         if (enableCenterDrawables && (isCenterHorizontal | isCenterVertical)) {
 
+            //有文字就才位移画布了
+            boolean textNoEmpty = !TextUtils.isEmpty(getText());
             //画布的偏移量
             int transX = 0, transY = 0;
 
+
             if (mDrawables[POSITION.START] != null) {
                 Rect bounds = mDrawablesBounds[POSITION.START];
                 int offset = (int) calcOffset(POSITION.START);
                 mDrawables[POSITION.START].setBounds(bounds.left + offset, bounds.top,
                         bounds.right + offset, bounds.bottom);
 
-                if (isCenterHorizontal)
+                if (isCenterHorizontal && textNoEmpty)
                     transX -= (mDrawablesBounds[POSITION.START].width() + getCompoundDrawablePadding()) >> 1;
             }
 
@@ -154,7 +157,7 @@ protected void onDraw(Canvas canvas) {
                 mDrawables[POSITION.TOP].setBounds(bounds.left, bounds.top + offset,
                         bounds.right, bounds.bottom + offset);
 
-                if (isCenterVertical)
+                if (isCenterVertical && textNoEmpty)
                     transY -= (mDrawablesBounds[POSITION.TOP].height() + getCompoundDrawablePadding()) >> 1;
             }
 
@@ -164,7 +167,7 @@ protected void onDraw(Canvas canvas) {
                 mDrawables[POSITION.END].setBounds(bounds.left + offset, bounds.top,
                         bounds.right + offset, bounds.bottom);
 
-                if (isCenterHorizontal)
+                if (isCenterHorizontal && textNoEmpty)
                     transX += (mDrawablesBounds[POSITION.END].width() + getCompoundDrawablePadding()) >> 1;
             }
 
@@ -174,11 +177,12 @@ protected void onDraw(Canvas canvas) {
                 mDrawables[POSITION.BOTTOM].setBounds(bounds.left, bounds.top + offset,
                         bounds.right, bounds.bottom + offset);
 
-                if (isCenterVertical)
+                if (isCenterVertical && textNoEmpty)
                     transY += (mDrawablesBounds[POSITION.BOTTOM].height() + getCompoundDrawablePadding()) >> 1;
             }
 
-            if (enableTextInCenter) {
+
+            if (enableTextInCenter && textNoEmpty) {
                 canvas.translate(transX, transY);
                 this.canvasTransX = transX;
                 this.canvasTransY = transY;