Question

除非屏幕小于那个宽度，否则可以将子宽度设置为固定宽度吗？

即。我希望下面的CardView正常400dp，除非它在一个小屏幕上，此时它应该是屏幕宽度（减去边距）......

<cdudigital.com.conjugator.MyLinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    tools:context=".GameActivity">
    <android.support.v7.widget.CardView
        xmlns:card_view="http://schemas.android.com/apk/res-auto"
        android:id="@+id/card_view"
        android:layout_gravity="center"
        android:gravity="center"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        card_view:cardCornerRadius="4dp"
        card_view:cardElevation="3dp">
    </android.support.v7.widget.CardView>
</cdudigital.com.conjugator.MyLinearLayout>

Answer 1

获取屏幕DP

DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();
float dpWidth = displayMetrics.widthPixels / displayMetrics.density;

并检查它是否低于400

if(dpWidth < 400){
    cardView.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT));
} else {
    cardView.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,(400 * displayMetrics.density + 0.5f)));
}

或者在XML

中

android:layout_width="match_parent"
android:maxWidth="400dp"

Android布局最大宽度或屏幕宽度？

1 个答案: