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问题:
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:card_view="http://schemas.android.com/apk/res-auto" android:id="@+id/card_view" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="@dimen/activity_vertical_margin" card_view:cardCornerRadius="12dp" card_view:cardElevation="12dp"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical"> ..... </android.support.v7.widget.CardView>
This is what I set in layout.xml
I'd like to programmatically change the background of the card at runtime.
CardView card =(CardView) findViewById(R.id.card_view); card.setBackgroundResource(R.drawable.card1);
This will set all radius corners to 0dp. I'd like to keep the radius and the background drawable.
回答1:
Instead of CardView you can set background resource for layout containing by that cardview like following.
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:card_view="http://schemas.android.com/apk/res-auto" android:id="@+id/card_view" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="@dimen/activity_vertical_margin" card_view:cardCornerRadius="12dp" card_view:cardElevation="12dp"> <LinearLayout android:id="@+id/myLayout" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical"> ..... </LinearLayout> </android.support.v7.widget.CardView>
and
LinearLayout myLayout=(LinearLayout) findViewById(R.id.myLayout); myLayout.setBackgroundResource(R.drawable.card1);
I hope this will help you.
回答2:
Use card_view:cardBackgroundColor="#FFFFFFFF" instead of android:background="#FFFFFFFF"
Programatically use, card.setCardBackgroundColor(color) instead of card.setBackgroundColor(color)
