fix: npe in setStroke

ShapedImageView/src/main/java/cn/gavinliu/android/lib/shapedimageview/ShapedImageView.java

@@ -231,11 +231,14 @@ public void setStroke(int strokeColor, float strokeWidth) {
         if (mStrokeWidth != strokeWidth) {
             mStrokeWidth = strokeWidth;
 
-            int width = getMeasuredWidth();
-            int height = getMeasuredHeight();
-            mStrokeShape.resize(width - mStrokeWidth * 2, height - mStrokeWidth * 2);
-
-            postInvalidate();
+            if (mStrokeShape == null) {
+                requestLayout();
+            } else {
+                int width = getMeasuredWidth();
+                int height = getMeasuredHeight();
+                mStrokeShape.resize(width - mStrokeWidth * 2, height - mStrokeWidth * 2);
+                postInvalidate();
+            }
         }
 
         if (mStrokeColor != strokeColor) {

app/src/main/java/cn/gavinliu/android/lib/shapedimageview/demo/SettingActivity.java

@@ -4,6 +4,7 @@
 import android.support.annotation.Nullable;
 import android.support.v7.app.AppCompatActivity;
 import android.view.View;
+import android.widget.FrameLayout;
 
 import cn.gavinliu.android.lib.shapedimageview.ShapedImageView;
 
@@ -20,7 +21,12 @@ protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_setting);
 
-        mShapedImageView = (ShapedImageView) findViewById(R.id.image1);
+        mShapedImageView = new ShapedImageView(this);
+        mShapedImageView.setImageResource(R.drawable.an);
+        mShapedImageView.setStroke(0xFF9999FF, 35);
+
+        FrameLayout frameLayout = findViewById(R.id.frameLayout);
+        frameLayout.addView(mShapedImageView);
     }
 
     public void stroke(View view) {
@@ -35,13 +41,12 @@ public void strokeColor(View view) {
         mShapedImageView.setStrokeColor(getResources().getColor(R.color.colorAccent));
     }
 
-
     public void round(View view) {
-        mShapedImageView.setShape(ShapedImageView.SHAPE_MODE_ROUND_RECT, 50,50);
+        mShapedImageView.setShape(ShapedImageView.SHAPE_MODE_ROUND_RECT, 50, 50);
     }
 
     public void circle(View view) {
-        mShapedImageView.setShape(ShapedImageView.SHAPE_MODE_CIRCLE, 50,50);
+        mShapedImageView.setShape(ShapedImageView.SHAPE_MODE_CIRCLE, 50, 50);
     }
 
     public void radius(View view) {

app/src/main/res/layout/activity_setting.xml

@@ -1,60 +1,51 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical">
 
-    <cn.gavinliu.android.lib.shapedimageview.ShapedImageView
-        android:id="@+id/image1"
-        android:layout_width="200dp"
-        android:layout_height="200dp"
-        android:layout_gravity="center_horizontal"
-        android:layout_marginBottom="10dp"
-        android:layout_marginTop="10dp"
-        android:src="@drawable/an"
-        app:shape_mode="circle"
-        app:stroke_color="#009688"
-        app:stroke_width="3dp"/>
-
+    <FrameLayout
+        android:id="@+id/frameLayout"
+        android:layout_width="300dp"
+        android:layout_height="300dp" />
 
     <Button
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:onClick="stroke"
-        android:text="stroke"/>
+        android:text="stroke" />
 
     <Button
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:onClick="strokeWidth"
-        android:text="stroke_width"/>
+        android:text="stroke_width" />
 
     <Button
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:onClick="strokeColor"
-        android:text="stroke_color"/>
+        android:text="stroke_color" />
 
 
     <Button
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:onClick="round"
-        android:text="round"/>
+        android:text="round" />
 
     <Button
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:onClick="circle"
-        android:text="circle"/>
+        android:text="circle" />
 
 
     <Button
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:onClick="radius"
-        android:text="Radius"/>
+        android:text="Radius" />
 
 </LinearLayout>