CODEWITHSUNDEEP
androidandroid-layoutandroid-linearlayout
Zheng Chenggong
Zheng Chenggong

Reputation: 23

Why My LinearLayout disappear?

This is my xml file

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

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="70dp">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:text="testFun:"
            android:textColor="@color/text_black"
            android:textSize="@dimen/titleTextSize"
            android:textStyle="bold" />

    </RelativeLayout>

    <View
        android:layout_width="match_parent"
        android:layout_height="2dp"
        android:background="@color/gray" />

    <RelativeLayout
        android:id="@+id/layout_currentStation"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <View
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"></View>

            <TextView
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="3"
                android:singleLine="true"
                android:text="tv_station:"
                android:textColor="@color/text_black"
                android:textSize="20sp" />

            <TextView
                android:id="@+id/tv_currentStation"
                android:layout_width="0dp"
                android:layout_height="40dp"
                android:layout_weight="6"
                android:background="@drawable/shape_home_white_r6"
                android:gravity="center_vertical"
                android:singleLine="true"
                android:textColor="@color/text_black"
                android:textColorHint="@color/text_gray"
                android:textSize="20sp" />

            <ImageView
                android:id="@+id/img_nomal_state_arrow"
                android:layout_width="30dp"
                android:layout_height="40dp"
                android:layout_alignParentRight="true"
                android:layout_centerVertical="true"
                android:layout_marginRight="5dp"
                android:paddingLeft="5dp"
                android:paddingRight="5dp"
                android:src="@drawable/icon_arrow_down" />

            <View
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"></View>
        </LinearLayout>

    </RelativeLayout>

    <LinearLayout
        android:id="@+id/testLayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:text="test" />
    </LinearLayout>

</LinearLayout>

I think android system will allocate rest of the space to "testLayout", because it is the only one specify the "layout_weight" attribute, but the result is:

enter image description here

The "testLayout" is just disappear, why?

Upvotes: 0

Views: 1361

Answers (3)

D&#225;niel Hoffmann
D&#225;niel Hoffmann

Reputation: 35

There is no orientation in the testLayout, try to add a vertical or horizontal orientation to it

EDIT

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="70dp">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:text="testFun:"
        android:textColor="@color/text_black"
        android:textSize="@dimen/titleTextSize"
        android:textStyle="bold" />

</RelativeLayout>

<View
    android:layout_width="match_parent"
    android:layout_height="2dp"
    android:background="@color/gray" />

<RelativeLayout
    android:id="@+id/layout_currentStation"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="10dp">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <View
            android:layout_width="0dp"
            android:layout_height="40dp"
            android:layout_weight="1"></View>

        <TextView
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="3"
            android:singleLine="true"
            android:text="tv_station:"
            android:textColor="@color/text_black"
            android:textSize="20sp" />

        <TextView
            android:id="@+id/tv_currentStation"
            android:layout_width="0dp"
            android:layout_height="40dp"
            android:layout_weight="6"
            android:background="@drawable/shape_home_white_r6"
            android:gravity="center_vertical"
            android:singleLine="true"
            android:textColor="@color/text_black"
            android:textColorHint="@color/text_gray"
            android:textSize="20sp" />

        <ImageView
            android:id="@+id/img_nomal_state_arrow"
            android:layout_width="30dp"
            android:layout_height="40dp"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:layout_marginRight="5dp"
            android:paddingLeft="5dp"
            android:paddingRight="5dp"
            android:src="@drawable/icon_arrow_down" />

        <View
            android:layout_width="0dp"
            android:layout_height="40dp"
            android:layout_weight="1"></View>
    </LinearLayout>

</RelativeLayout>


<LinearLayout
    android:id="@+id/testLayout"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="1"
    android:orientation="vertical">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="test" />
</LinearLayout>

I set the Views height to 40dp same as the TextView height and now "testLayout" is visible at the bottom

Upvotes: 0

Jitesh Prajapati
Jitesh Prajapati

Reputation: 2533

Change height of both View in Relative layout(use fix height in dp).

<RelativeLayout
        android:id="@+id/layout_currentStation"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <View
                android:layout_width="0dp"
                android:layout_height="5dp"   // fix it in dp
                android:layout_weight="1"></View>

            <TextView
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="3"
                android:singleLine="true"
                android:text="tv_station:"
                android:textColor="@color/text_black"
                android:textSize="20sp" />

            <TextView
                android:id="@+id/tv_currentStation"
                android:layout_width="0dp"
                android:layout_height="40dp"
                android:layout_weight="6"
                android:background="@drawable/shape_home_white_r6"
                android:gravity="center_vertical"
                android:singleLine="true"
                android:textColor="@color/text_black"
                android:textColorHint="@color/text_gray"
                android:textSize="20sp" />

            <ImageView
                android:id="@+id/img_nomal_state_arrow"
                android:layout_width="30dp"
                android:layout_height="40dp"
                android:layout_alignParentRight="true"
                android:layout_centerVertical="true"
                android:layout_marginRight="5dp"
                android:paddingLeft="5dp"
                android:paddingRight="5dp"
                android:src="@drawable/icon_arrow_down" />

            <View
                android:layout_width="0dp"
                android:layout_height="5dp"   // fix it in dp
                android:layout_weight="1"></View>
        </LinearLayout>

    </RelativeLayout>

hope it helps.

Upvotes: 2

Narendra Sorathiya
Narendra Sorathiya

Reputation: 3830

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

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="70dp">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:text="testFun:"
        android:textColor="@color/text_black"
        android:textSize="@dimen/titleTextSize"
        android:textStyle="bold" />

</RelativeLayout>

<View
    android:layout_width="match_parent"
    android:layout_height="2dp"
    android:background="@color/gray" />

<RelativeLayout
    android:id="@+id/layout_currentStation"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="10dp">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <View
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"></View>

        <TextView
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="3"
            android:singleLine="true"
            android:text="tv_station:"
            android:textColor="@color/text_black"
            android:textSize="20sp" />

        <TextView
            android:id="@+id/tv_currentStation"
            android:layout_width="0dp"
            android:layout_height="40dp"
            android:layout_weight="6"
            android:background="@drawable/shape_home_white_r6"
            android:gravity="center_vertical"
            android:singleLine="true"
            android:textColor="@color/text_black"
            android:textColorHint="@color/text_gray"
            android:textSize="20sp" />

        <ImageView
            android:id="@+id/img_nomal_state_arrow"
            android:layout_width="30dp"
            android:layout_height="40dp"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:layout_marginRight="5dp"
            android:paddingLeft="5dp"
            android:paddingRight="5dp"
            android:src="@drawable/icon_arrow_down" />

        <View
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"></View>
    </LinearLayout>

</RelativeLayout>

<LinearLayout
    android:id="@+id/testLayout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_weight="1">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:text="test" />
</LinearLayout>

Upvotes: 0

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