[英]How do you set the layout width of a cardview inside a linearlayout programmatically?
我正在嘗試在MATCH_PARENT和0dp之間更改兩個cardview元素的布局寬度。 當我通過xml更改模擬場景時,它是正確的,但是,當我以編程方式進行操作時,它並沒有按預期方式呈現。
XML文件
<LinearLayout
android:id="@+id/lDates"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/card_margins"
android:layout_marginEnd="@dimen/card_margins"
android:layout_below="@id/lnrButtons"
android:orientation="horizontal">
<android.support.v7.widget.CardView
android:id="@+id/cardSectionA"
android:layout_width="0dp"
android:layout_height="wrap_content"
app:cardElevation="0dp"
android:layout_marginEnd="@dimen/card_margins"
android:layout_marginBottom="@dimen/card_margins"
app:cardCornerRadius="4dp"
android:layout_weight="1">
<TextView
android:id="@+id/textLabelA"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="@string/sample_value"/>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:id="@+id/cardSectionB"
android:layout_width="0dp"
android:layout_height="wrap_content"
app:cardElevation="0dp"
android:layout_marginEnd="@dimen/card_margins"
android:layout_marginBottom="@dimen/card_margins"
app:cardCornerRadius="4dp"
android:layout_weight="1">
<TextView
android:id="@+id/textLabelB"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/sample_value"/>
</android.support.v7.widget.CardView>
</LinearLayout>
爪哇
//as-is scenario; cardSectionA and cardSectionB should be shown
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
cardSectionA.getLayoutParams().width,
LinearLayout.LayoutParams.WRAP_CONTENT
);
cardSectionA.setLayoutParams(params);
cardSectionB.setLayoutParams(params);
//should only show cardSectionA scenario
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT
);
cardSectionA.setLayoutParams(params);
非常感謝。
弄清楚了。 為了達到預期效果,還必須設置邊距和布局權重。
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT
);
int margin = 10;
params.setMargins(margin, margin, margin, margin);
params.weight = 1;
cardSectionA.setLayoutParams(params);
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.