diff --git a/library/build.gradle b/library/build.gradle
index 9ab1345..ea6b666 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -1,13 +1,13 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 30
+    compileSdkVersion 31
 
     defaultConfig {
         minSdkVersion 14
-        targetSdkVersion 30
-        versionCode 36
-        versionName "support.v0.0.12"
+        targetSdkVersion 31
+        versionCode 37
+        versionName "support.v0.0.13"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
diff --git a/library/src/main/java/com/ruffian/library/widget/RImageView.java b/library/src/main/java/com/ruffian/library/widget/RImageView.java
index a7170c4..a4f32ea 100644
--- a/library/src/main/java/com/ruffian/library/widget/RImageView.java
+++ b/library/src/main/java/com/ruffian/library/widget/RImageView.java
@@ -12,11 +12,13 @@
 import android.graphics.PorterDuffColorFilter;
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.LayerDrawable;
+import android.os.Build;
+import android.util.AttributeSet;
+
 import android.support.annotation.ColorInt;
 import android.support.annotation.DrawableRes;
 import android.support.annotation.Nullable;
 import android.support.v7.widget.AppCompatImageView;
-import android.util.AttributeSet;
 
 import com.ruffian.library.widget.rounded.RoundDrawable;
 
@@ -39,7 +41,6 @@ public class RImageView extends AppCompatImageView {
     //是否圆形
     private boolean mIsCircle = false;
 
-
     private Drawable mDrawable;
     private ScaleType mScaleType;
     private int mResource;
@@ -52,7 +53,7 @@ public RImageView(Context context) {
 
     public RImageView(Context context, @Nullable AttributeSet attrs) {
         super(context, attrs);
-        initAttributeSet(attrs);
+        initAttributeSet(context, attrs);
     }
 
     /**
@@ -60,8 +61,10 @@ public RImageView(Context context, @Nullable AttributeSet attrs) {
      *
      * @param attrs
      */
-    private void initAttributeSet(AttributeSet attrs) {
-        TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.RImageView);
+    private void initAttributeSet(Context context, AttributeSet attrs) {
+        if (context == null || attrs == null) return;
+
+        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.RImageView);
         mIsCircle = a.getBoolean(R.styleable.RImageView_is_circle, false);
         mCorner = a.getDimensionPixelSize(R.styleable.RImageView_corner_radius, -1);
         mCornerTopLeft = a.getDimensionPixelSize(R.styleable.RImageView_corner_radius_top_left, 0);
@@ -70,19 +73,26 @@ private void initAttributeSet(AttributeSet attrs) {
         mCornerBottomRight = a.getDimensionPixelSize(R.styleable.RImageView_corner_radius_bottom_right, 0);
         mBorderWidth = a.getDimensionPixelSize(R.styleable.RImageView_border_width, 0);
         mBorderColor = a.getColor(R.styleable.RImageView_border_color, Color.BLACK);
+
         //get system attrs
         String namespace = "http://schemas.android.com/apk/res/android";//android的命名空间
         int tintColor = attrs.getAttributeResourceValue(namespace, "tint", 0);
-        if (tintColor != 0)
-            mColorFilter = new PorterDuffColorFilter(getResources().getColor(tintColor), mTintMode);
+
         int tintMode = attrs.getAttributeIntValue(namespace, "tintMode", 0);
         if (tintMode != 0) mTintMode = wrapTintMode(tintMode);
+        //android studio 预览：需要区分版本或者使用 isInEditMode() 判断区分
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+            setImageTintList(getImageTintList());
+        } else {
+            if (tintColor != 0) {
+                mColorFilter = new PorterDuffColorFilter(getResources().getColor(tintColor), mTintMode);
+            }
+        }
 
         a.recycle();
         updateDrawableAttrs();
     }
 
-
     @Override
     protected void drawableStateChanged() {
         super.drawableStateChanged();
@@ -128,11 +138,12 @@ public void setImageResource(@DrawableRes int resId) {
     @Override
     public void setImageTintList(@Nullable ColorStateList tint) {
         super.setImageTintList(tint);
-        this.mColorFilter = new PorterDuffColorFilter(tint.getDefaultColor(), mTintMode);
+        if (tint != null) {
+            this.mColorFilter = new PorterDuffColorFilter(tint.getDefaultColor(), mTintMode);
+        }
         setColorFilter();
     }
 
-
     @Override
     public void setImageTintMode(@Nullable PorterDuff.Mode tintMode) {
         super.setImageTintMode(tintMode);
@@ -140,7 +151,6 @@ public void setImageTintMode(@Nullable PorterDuff.Mode tintMode) {
         setColorFilter();
     }
 
-
     public void setColorFilter() {
         if (mColorFilter != null && mDrawable != null) {
             //ColorFilter filter = new PorterDuffColorFilter(Color.parseColor("#00FF00"), PorterDuff.Mode.SRC_ATOP);
@@ -187,7 +197,6 @@ private void updateAttrs(Drawable drawable, ScaleType scaleType) {
         }
     }
 
-
     /**
      * 绘制空Bitmap
      */