Question

我在 DrawerLayout 中有 LinearLayout ，它根据layout_weight呈现抽屉项目和视图。我试图通过将其高度设置为0或使用 View.Visibility - GONE 属性来以编程方式隐藏该视图。

尝试

通过将其Visibilty设置为 GONE ，它将充当 INVISIBLE



通过获取LayoutParams并将其高度设置为0.虽然它充当 INVISIBLE

ParentLayout： mother.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">

<android.support.v4.widget.DrawerLayout
    android:id="@+id/activityMotherDrawerLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true">

    <include layout="@layout/activity_mother" />

    <include layout="@layout/motherdrawer" />

  </android.support.v4.widget.DrawerLayout>

布局： motherdrawer.xml

<?xml version="1.0" encoding="utf-8"?>
<com.app.ui.view.ScrimInsetsFrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:id="@+id/drawerRootLayout"
  android:layout_width="@dimen/activity_mother_drawer_width"
  android:layout_height="match_parent"
  android:layout_gravity="start"
  android:background="@color/background_application"
  android:fitsSystemWindows="false"
  android:orientation="vertical">

<RelativeLayout
    android:id="@+id/activityMotherDrawerInnerLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="@dimen/activity_mother_drawer_layout_padding">

    <LinearLayout
        android:id="@+id/activityMotherDrawerInnerInnerLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">


        <LinearLayout
            android:id="@+id/activityMotherDrawerMyAttendanceLayout"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_gravity="center"
            android:layout_weight="1"
            android:clickable="true"
            android:orientation="vertical">

            <ImageView
                android:id="@+id/activityMotherDrawerMyAttendanceIv"
                android:layout_width="match_parent"
                android:layout_height="0dp"
                android:layout_centerInParent="true"
                android:layout_weight="1.5"
                android:padding="@dimen/activity_mother_drawer_image_padding"
                android:scaleType="centerInside"
                android:src="@drawable/ic_drawer_attendance" />

            <android.support.v7.widget.AppCompatTextView
                android:layout_width="match_parent"
                android:layout_height="0dp"
                android:layout_below="@id/activityMotherDrawerMyAttendanceIv"
                android:layout_centerHorizontal="true"
                android:layout_weight="1"
                android:gravity="top|center"
                android:text="@string/activity_mother_drawer_attendance"
                android:textColor="@color/colorGray"
                android:textSize="@dimen/activity_mother_drawer_text_size" />

        </LinearLayout>

        <LinearLayout
            android:id="@+id/activityMotherDrawerDashboardLayout"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_gravity="center"
            android:layout_weight="1"
            android:clickable="true"
            android:orientation="vertical">

            <ImageView
                android:id="@+id/activityMotherDrawerDashboardIv"
                android:layout_width="match_parent"
                android:layout_height="0dp"
                android:layout_centerInParent="true"
                android:layout_weight="1.5"
                android:padding="@dimen/activity_mother_drawer_image_padding"
                android:scaleType="centerInside"
                android:src="@drawable/ic_drawer_dashboard" />

            <android.support.v7.widget.AppCompatTextView
                android:layout_width="match_parent"
                android:layout_height="0dp"
                android:layout_below="@id/activityMotherDrawerDashboardIv"
                android:layout_centerHorizontal="true"
                android:layout_weight="1"
                android:gravity="top|center"
                android:text="@string/activity_mother_drawer_dashboard"
                android:textColor="@color/colorGray"
                android:textSize="@dimen/activity_mother_drawer_text_size" />

        </LinearLayout>

        <LinearLayout
            android:id="@+id/activityMotherDrawerSettingsLayout"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_gravity="center"
            android:layout_weight="1"
            android:clickable="true"
            android:orientation="vertical">

            <ImageView
                android:id="@+id/activityMotherDrawerSettingsIv"
                android:layout_width="match_parent"
                android:layout_height="0dp"
                android:layout_centerInParent="true"
                android:layout_weight="1.5"
                android:padding="@dimen/activity_mother_drawer_image_padding"
                android:scaleType="centerInside"
                android:src="@drawable/ic_drawer_settings" />

            <android.support.v7.widget.AppCompatTextView
                android:layout_width="match_parent"
                android:layout_height="0dp"
                android:layout_below="@id/activityMotherDrawerSettingsIv"
                android:layout_centerHorizontal="true"
                android:layout_weight="1"
                android:gravity="top|center"
                android:text="@string/activity_mother_drawer_setting"
                android:textColor="@color/colorGray"
                android:textSize="@dimen/activity_mother_drawer_text_size" />

        </LinearLayout>
    </LinearLayout>

   </RelativeLayout>
 </com.app.ui.view.ScrimInsetsFrameLayout>`

每当我尝试使用 getLayoutParams 获取layoutParam时，它会返回 FrameLayout ，其中ParentView为LinearLayout。

使用Java：

mDashboardLayout = (LinearLayout)mDrawerInnerRootLayout.findViewById(R.id.activityMotherDrawerDashboardLayout);
LinearLayout.LayoutParams mParams = (LinearLayout.LayoutParams) mDashboardLayout.getLayoutParams();//returns FrameLayout instead where it should return LinearLayout

mDashboardLayout.setVisibility(View.GONE); //it acts as INVISIBILITY

任何人都可以告诉我为什么它会返回 FrameLayout而不是 LinearLayout 或为何其可见性更改为INVISIBLE而非GONE？

Answer 1

虽然将视图 - 可见性更改为GONE或INVISIBLE仍然保持视图始终是不可见的。它确实接受onClick事件。根据SO，我想完全删除该视图。我可以使用以下方法实现它。

我正在以编程方式相应地将View添加到ParentView层次结构并刷新整个布局。

  View inflatedDashboardView;
  inflatedDashboardView = mInflater.inflate(R.layout.layout_drawer_dashboard, mDrawerInnerRootLayout, false);
  mDashboardLayout = (LinearLayout) inflatedDashboardView.findViewById(R.id.activityMotherDrawerDashboardLayout);
  mDrawerInnerRootLayout.addView(inflatedDashboardView);
  mDrawerInnerRootLayout.forceLayout();

我仍然无法理解为什么DrawerLayout内的InnerView布局总是返回FrameLayout。

DrawerLayout内部的内部视图布局始终返回FrameLayout

1 个答案: