Android Layout Below and Above

2019-06-17 02:30发布

I got three TextViews. The first and the third are defined with a not changing Text. The second, the TextView between the first and the third gets the value with an input. How can I set the second TextView between the first and the third in the layout?

<TextView
android:id="@+id/secondtext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/firsttext"
android:layout_above="@+id/thirdtext"
android:layout_alignLeft="@+id/firsttext"
android:layout_alignRight="@+id/thirdtext"
android:background="@drawable/border"
android:scrollbars="vertical"
android:textAppearance="?android:attr/textAppearanceMedium" />

That doesn't work!

<TextView
        android:id="@+id/secondtext"
        android:layout_width="282dp"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/firsttext"
        android:layout_below="@+id/firsttext"
        android:background="@drawable/border"
        android:ellipsize="marquee"
        android:lines="4"
        android:scrollbars="vertical"
        android:textAppearance="?android:attr/textAppearanceMedium" />

That also doesn't work

4条回答
Lonely孤独者°
2楼-- · 2019-06-17 02:49

Define a LinearLayout with height="wrap_content" and width="fill_parent".

You can overcome your problem with two ways. Either add android:layout_below="@id/TextViewExample" in your Textviews or use android:layout_marginTop="10dip"

  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="@android:color/black" >

        <TextView
            android:id="@+id/firsttext"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@android:color/white"
            android:text="first"
             android:layout_marginTop="10dip"
            android:textAppearance="?android:attr/textAppearanceMedium" />

        <TextView
            android:id="@+id/secondtext"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@id/firsttext"
            android:background="@android:color/white"
            android:text="second"
            android:layout_below="@id/firstText"
             android:layout_marginTop="20dip"
            android:textAppearance="?android:attr/textAppearanceMedium" />

        <TextView
            android:id="@+id/thirdtext"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@id/secondtext"
            android:background="@android:color/white"
            android:text="third"
             android:layout_marginTop="30dip"
            android:textAppearance="?android:attr/textAppearanceMedium" 
            android:layout_below="@id/secondtext"/>

    </LinearLayout>
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Melony?
3楼-- · 2019-06-17 02:52

Your question is not clear. But try this.. If you are using Relative layout as parent then

<TextView
android:id="@+id/secondtext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignRight="@id/firsttext"
android:background="@drawable/border"
android:scrollbars="vertical"
android:textAppearance="?android:attr/textAppearanceMedium" />

to show three textviews in horizontal way.

<TextView
android:id="@+id/secondtext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/firsttext"
android:background="@drawable/border"
android:scrollbars="vertical"
android:textAppearance="?android:attr/textAppearanceMedium" />

to show in vertical way..

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走好不送
4楼-- · 2019-06-17 02:54

Try

android:layout_width="match_parent"
android:layout_centerInParent="true"
android:layout_toLeftOf="@id/thirdText"
android:layout_toRightOf="@id/firstText"

Make sure to add your left and right TextView first with the fixed width and

android:layout_alignParentLeft="true"

and

android:layout_alignParentRight="true" 
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倾城 Initia
5楼-- · 2019-06-17 02:59

Too many dependencies, check if you are getting any circular dependency error in xml. As per your requirement, without specifying the spacing and other UI details, a solution:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@android:color/black" >

    <TextView
        android:id="@+id/firsttext"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@android:color/white"
        android:text="first"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <TextView
        android:id="@+id/secondtext"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/firsttext"
        android:background="@android:color/white"
        android:text="second"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <TextView
        android:id="@+id/thirdtext"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/secondtext"
        android:background="@android:color/white"
        android:text="third"
        android:textAppearance="?android:attr/textAppearanceMedium" />

</RelativeLayout>
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