Java Android uses view group layout

1. Linear layout LinerLauout

The linear layout can be a single row and column view. Rows can be horizontal or vertical;
you can useandroid:orientation

Attributes	parameter
android:orientation	horizonal和vertical
android:width	wrap_content和match_parent
adnroid:width	wrap_content和match_parent

linelayout.xml

<?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" >

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#FFFAF0"
        android:gravity="center"
        android:text="TextView(显示框)"
        android:textColor="#EA5246"
        android:textSize="18sp"
        android:textStyle="bold|italic" />
    
     <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#FF4500"
        android:gravity="center"
        android:text="TextView(显示框)"
        android:textColor="#EA5246"
        android:textSize="18sp"
        android:textStyle="bold|italic" />
     
      <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#808080"
        android:gravity="center"
        android:text="TextView(显示框)"
        android:textColor="#EA5246"
        android:textSize="18sp"
        android:textStyle="bold|italic" />
      
       <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#000000"
        android:gravity="center"
        android:text="TextView(显示框)"
        android:textColor="#EA5246"
        android:textSize="18sp"
        android:textStyle="bold|italic" />

</LinearLayout>

2. Table Layout TableLayout

TableRowDetermine the number of rows, the number of columns in it

tablelayout.xml

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

    <TableRow>

        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="测试11" />
        
    </TableRow>

    <TableRow>

        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="测试21" />

        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="测试22" />
    </TableRow>
    
    <TableRow>
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="测试31" />
        
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="测试32" />
        
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="测试33" />
        
    </TableRow>

</TableLayout>

3. Frame Layout FrameLayout

The secondary layout is used to add views from bottom to top in the Lacey stack format, which is to cover layer by layer.
framelayout.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:layout_gravity="center" >

    <TextView
        android:layout_width="150sp"
        android:layout_height="150sp"
        android:background="#000000" 
        android:gravity="center"
        />
    
    <TextView
        android:layout_width="100sp"
        android:layout_height="100sp"
        android:background="#FFA07A" 
        android:gravity="center"
        />
    
    <TextView
        android:layout_width="50sp"
        android:layout_height="50sp"
        android:background="#FFD700" 
        android:gravity="center"
        />

</FrameLayout>

4. Relative Layout RelativeLayout

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="${relativePackage}.${activityClass}" >

    <Button
        android:id="@+id/btn1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />

</RelativeLayout>

5. Absolute layout RelativeLayout

The layout is definitely not recommended, so you don’t need to watch it

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

    <CheckBox
        android:id="@+id/checkBox1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_x="42dp"
        android:layout_y="92dp"
        android:text="CheckBox" /> 

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_x="22dp"
        android:layout_y="14dp"
        android:text="Button" />

</AbsoluteLayout>