浮动动作button边框颜色不变

我通过使用以下代码更改了Floating Action Button backgroundTintList颜色：

 fab.setBackgroundTintList(ColorStateList.valueOf(mResources.getColor(R.color.fab_color))); 

但是我最终得到了API 4.4.2的以下内容：

• 处理Android硬件后退button
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• Android：如何更改应用程序的大小：fabSize =“正常”浮动操作button
• Android radiogroup，单选button之间的分隔符
• 如何使用AppCompat设置button的禁用颜色？

一切看起来很好API 21 <=但API 21以下，我有这个问题的FAB。

我正在编程创buildFAB，如下所示：

• 自定义alertdialog Android中的OnClickListener
• Android的一个OnClick方法为多个button？
• 操作栏上的“返回”button - Android。 如何去“回”？
• 事件OnClick在自定义通知中的button
• 显示前一个片段

  FloatingActionButton fab = new FloatingActionButton(this); CoordinatorLayout.LayoutParams layoutParams = new CoordinatorLayout.LayoutParams( ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); fab.setLayoutParams(layoutParams); layoutParams.rightMargin = mResources.getDimensionPixelSize(R.dimen.activity_horizontal_margin); ((CoordinatorLayout) findViewById(R.id.coordinatorLayout)).addView(fab); CoordinatorLayout.LayoutParams p = (CoordinatorLayout.LayoutParams) fab.getLayoutParams(); p.setAnchorId(R.id.appBarLayout); p.anchorGravity = Gravity.BOTTOM | Gravity.END; fab.setLayoutParams(p); fab.setVisibility(View.VISIBLE); fab.setBackgroundTintList(ColorStateList.valueOf(mResources.getColor(R.color.fab_color))); fab.setImageDrawable(getResources().getDrawable(R.drawable.ic_button)); 

我也碰巧由FloatingActionButton的官方源代码运行，我看到他们在这里实例化borderDrawable：

  @Override void setBackgroundDrawable(Drawable originalBackground, ColorStateList backgroundTint, PorterDuff.Mode backgroundTintMode, int rippleColor, int borderWidth) { // Now we need to tint the original background with the tint mShapeDrawable = DrawableCompat.wrap(originalBackground.mutate()); DrawableCompat.setTintList(mShapeDrawable, backgroundTint); if (backgroundTintMode != null) { DrawableCompat.setTintMode(mShapeDrawable, backgroundTintMode); } final Drawable rippleContent; if (borderWidth > 0) { // BORDER DRAWABLE RIGHT HERE!! mBorderDrawable = createBorderDrawable(borderWidth, backgroundTint); rippleContent = new LayerDrawable(new Drawable[]{mBorderDrawable, mShapeDrawable}); } else { mBorderDrawable = null; rippleContent = mShapeDrawable; } mRippleDrawable = new RippleDrawable(ColorStateList.valueOf(rippleColor), rippleContent, null); mShadowViewDelegate.setBackgroundDrawable(mRippleDrawable); mShadowViewDelegate.setShadowPadding(0, 0, 0, 0); } 

Related of "浮动动作button边框颜色不变"

 <item name="colorAccent">@color/colorAccent</item> 

  <android.support.design.widget.FloatingActionButton android:id="@+id/fab" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="bottom|end" app:backgroundTint="@color/fab_color" android:layout_margin="@dimen/fab_margin" android:src="@android:drawable/ic_dialog_email" /> 

 <android.support.design.widget.FloatingActionButton android:id="@+id/fab" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="54dp" android:layout_marginRight="16dp" android:clickable="true" android:src="@drawable/ic_edit" app:layout_anchor="@id/xxxx" app:rippleColor="@android:color/white" app:backgroundTint="#00FF00" app:layout_anchorGravity="bottom|end|right" /> 

 <android.support.design.widget.FloatingActionButton android:id="@+id/fab" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="54dp" android:layout_marginRight="16dp" android:clickable="true" android:src="@drawable/ic_edit" app:layout_anchor="@id/xxx" app:borderWidth="0dp" app:rippleColor="@android:color/white" app:backgroundTint="#4000FF00" app:elevation="0dp" app:pressedTranslationZ="0dp" app:layout_anchorGravity="bottom|end|right" />