Update

app/src/main/java/com/hippo/widget/SimpleImageView.java

@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2015 Hippo Seven
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.hippo.widget;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.Canvas;
+import android.graphics.drawable.Drawable;
+import android.util.AttributeSet;
+import android.view.View;
+
+public class SimpleImageView extends View {
+
+    private Drawable mDrawable;
+
+    private static final int[] LAYOUT_ATTRS = new int[] {
+            android.R.attr.src
+    };
+
+    public SimpleImageView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        init(context, attrs);
+    }
+
+    public SimpleImageView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        init(context, attrs);
+    }
+
+    private void init(Context context, AttributeSet attrs) {
+        final TypedArray a = context.obtainStyledAttributes(attrs, LAYOUT_ATTRS);
+        mDrawable = a.getDrawable(0);
+        a.recycle();
+    }
+
+    @Override
+    protected int getSuggestedMinimumWidth() {
+        int superMinWidth = super.getSuggestedMinimumWidth();
+        return (mDrawable == null) ? superMinWidth :
+                Math.max(superMinWidth, mDrawable.getMinimumWidth() + getPaddingLeft() + getPaddingRight());
+    }
+
+    @Override
+    protected int getSuggestedMinimumHeight() {
+        int superMinHeight = super.getSuggestedMinimumHeight();
+        return (mDrawable == null) ? superMinHeight :
+                Math.max(superMinHeight, mDrawable.getMinimumHeight() + getPaddingTop() + getPaddingBottom());
+    }
+
+    @Override
+    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
+        super.onLayout(changed, left, top, right, bottom);
+        int width = right - left;
+        int height = bottom - top;
+        mDrawable.setBounds(getPaddingLeft(), getPaddingTop(),
+                width - getPaddingRight(), height - getPaddingBottom());
+    }
+
+    @Override
+    protected void onDraw(Canvas canvas) {
+        mDrawable.draw(canvas);
+    }
+}