XML布局（Android开发）存在一些问题。

Question

I think I have some problems with a LinearLayout container. I do not know how to fix these problems:

I am a beginner to XML but I think the problem is in the second LinearLayout. I hope someone can help me out.

The code is here below:

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

    </LinearLayout>**
        <Button 
            android:layout_height="match_parent"
             android:layout_width="match_parent"         

            />





</LinearLayout>

Answer 1

The problem I see when reading your xml file is that inside the main LinearLayout you have 3 elements with the properties about the width and height as follows:

android:layout_height="match_parent"
android:layout_width="match_parent"

which means you expect the elements to fill entirely the main LinearLayout . This is not going to work. A linear layout has ordered not overlapping elements ( RelativeLayout is there for that). Since the main LinearLayout is supposed to be oriented vertically, I suppose that for these three elements, you need to set the properties to match the whole width of main LinearLayout and to be wrapped vertically, by setting these values:

android:layout_height="wrap_content"
android:layout_width="match_parent"

You should apply these to the TextView , LinearLayout and Button elements of second level.

Answer 2

如果您有重叠的图像视图，请尝试为其添加权重和/或更改宽度以使其与父视图不匹配，而仅包装内容。

Answer 3

请将andriod更改为android（第14行）

Answer 4

Your posted code has a typo. Your fix might be as simple as replacing the line:

andriod:orientation="horizontal"

with:

android:orientation="horizontal"

Answer 5

Judging by the image you posted, I think you may have forgotten to add weights to occupy the free space in your Linearlayouts. Try this:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
    android:layout_height="match_parent"
    android:layout_width="match_parent"
    android:orientation="vertical">
    <TextView 
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
    />
    <LinearLayout
        android:layout_height="match_parent"
        android:layout_width="match_parent"
        andriod:orientation="horizontal"
        android:layout_weight="1" >
        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_weight="1"
           />
        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_weight="1"
            />

    </LinearLayout>
        <Button 
            android:layout_height="wrap_content"
             android:layout_width="match_parent"         
            />    

</LinearLayout>