• Android五种布局模式管理



    学习了一段时间的android,结果发现对其布局还不是很了解,回头重新温习下,希望给和我一样困惑的朋友带来帮助,如有描述不对的地方,还请指正。


    android
    分为5种布局模型:

    1、 线性布局(LinearLayout

    描述:最简单布局方式,依次向下进行排列。

     

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
            android:orientation
    ="vertical"
            android:layout_width
    ="fill_parent"
            android:layout_height
    ="fill_parent">
        
    <Button android:text="Up" 
            android:id
    ="@+id/Button03" 
            android:layout_width
    ="fill_parent" 
            android:layout_height
    ="wrap_content"></Button>
            
        
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
            android:orientation
    ="horizontal" 
            android:layout_width
    ="fill_parent"
            android:layout_height
    ="fill_parent">        
        
    <Button android:text="left" 
            android:id
    ="@+id/Button01" 
            android:width
    ="120px"
            android:layout_width
    ="wrap_content" 
            android:layout_height
    ="wrap_content"></Button>    
        
    <Button 
            
    android:text="right" 
            android:id
    ="@+id/Button02" 
            android:width
    ="120px"
            android:layout_width
    ="wrap_content" 
            android:layout_height
    ="wrap_content"></Button>
        
    </LinearLayout>
    </LinearLayout>

    2、 表格布局(TableLayout

    描述:类似于HTML table ,在其中间添加View 或是<TableRow></TableRow>控件。

     

    <?xml version="1.0" encoding="utf-8"?>
    <TableLayout 
        
    xmlns:android="http://schemas.android.com/apk/res/android"
        android:id
    ="@+id/TableLayout01"
        android:layout_width
    ="fill_parent" android:layout_height="fill_parent">
        
    <TableRow android:gravity="center">
          
    <Button 
                
    android:text="@+id/Button01" 
                android:id
    ="@+id/Button01" 
                android:layout_width
    ="wrap_content" 
                android:layout_height
    ="wrap_content">
           
    </Button>
        
    </TableRow>
        
    <TableRow android:gravity="center">
            
    <TextView android:text="第一行第0列" 
                      android:layout_width
    ="wrap_content" 
                      android:layout_height
    ="wrap_content"></TextView>
            
    <TextView android:text="第一行第1列" 
                      android:layout_width
    ="wrap_content" 
                      android:layout_height
    ="wrap_content"></TextView>
        
    </TableRow>
         
    <TableRow android:gravity="center">
            
    <TextView android:text="第二行第0列" 
                      android:layout_width
    ="wrap_content" 
                      android:layout_height
    ="wrap_content"></TextView>
            
    <TextView android:text="第二行第1列" 
                      android:layout_width
    ="wrap_content" 
                      android:layout_height
    ="wrap_content"></TextView>
        
    </TableRow>
    </TableLayout>

    3、 单帧布局(FrameLayout

    描述:没发现特别的,感觉和线性布局差不多,类似于HTML层叠


    <?xml version="1.0" encoding="utf-8"?>
    <FrameLayout 
        
    xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width
    ="wrap_content" 
        android:layout_height
    ="wrap_content">
        
    <ImageView 
            
    android:id="@+id/ImageView01"
            android:src
    ="@drawable/circle_blue"
            android:layout_width
    ="wrap_content" 
            android:layout_height
    ="wrap_content">
        
    </ImageView>
        
    <ImageView 
            
    android:id="@+id/ImageView02"
            android:src
    ="@drawable/circle_green"
            android:layout_width
    ="wrap_content" 
            android:layout_height
    ="wrap_content">
        
    </ImageView>
        
    <ImageView 
            
    android:id="@+id/ImageView03"
            android:src
    ="@drawable/circle_red"
            android:layout_width
    ="wrap_content" 
            android:layout_height
    ="wrap_content">
        
    </ImageView>
        
    </FrameLayout>

    4、 相对布局(RelativeLayout

    描述:取决于对参照控件进行布局,父控件和子控件均可

    常用属性:android:layout_centerInParent=”true/false”        

              android:layout_above, android:layout_below
    android:layout_alignleft, android:layout_alignright.

    <?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width
    ="fill_parent" android:layout_height="fill_parent">
         
    <Button
              
    android:id="@+id/btnmiddle"
              android:text
    ="MiddleButton"
              android:layout_width
    ="200px"
              android:layout_height
    ="wrap_content"
              android:layout_centerInParent
    ="true">     
         
    </Button>
          
    <Button
              
    android:id="@+id/btnup"
              android:text
    ="UpButton"
              android:layout_width
    ="100px"
              android:layout_height
    ="wrap_content"          
              android:layout_above
    ="@id/btnmiddle"
              android:layout_alignLeft
    ="@id/btnmiddle">     
         
    </Button>
          
    <Button
              
    android:id="@+id/btndown"
              android:text
    ="downButton"
              android:layout_width
    ="100px"
              android:layout_height
    ="wrap_content"          
              android:layout_below
    ="@id/btnmiddle"
              android:layout_alignRight
    ="@id/btnmiddle">     
         
    </Button>
    </RelativeLayout>

    5、 坐标布局(AbsoluteLayout

    描述:对其控件进行直接定位,增加灵活性。

    常用属性:android:layout_x,android:layout_y.


    <?xml version="1.0" encoding="utf-8"?>
    <AbsoluteLayout
      
    xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width
    ="wrap_content"
      android:layout_height
    ="wrap_content">
      
      
    <TextView 
           
    android:layout_width="wrap_content" 
           android:text
    ="UserName:" 
           android:layout_height
    ="wrap_content" 
           android:id
    ="@+id/tvName" 
           android:layout_y
    ="20dip" 
           android:layout_x
    ="50dip">
           
    </TextView>
       
    <TextView 
           
    android:layout_width="wrap_content" 
           android:text
    ="Password:" 
           android:layout_height
    ="wrap_content" 
           android:id
    ="@+id/tvPassword" 
           android:layout_y
    ="100dip" 
           android:layout_x
    ="55dip">
           
    </TextView>
           
       
    <EditText
           
    android:layout_width="150px" 
           android:layout_height
    ="wrap_content" 
           android:id
    ="@+id/tvPassword" 
           android:layout_y
    ="10dip" 
           android:layout_x
    ="120dip">
           
    </EditText>
       
    <EditText
           
    android:layout_width="150px" 
           android:layout_height
    ="wrap_content" 
           android:id
    ="@+id/tvPassword" 
           android:layout_y
    ="90dip" 
           android:layout_x
    ="120dip">
           
    </EditText>
    </AbsoluteLayout>

    MyLayout.java

    package com.jay.Layout;

    import android.app.Activity;
    import android.os.Bundle;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.Button;

    public class MyLayout extends Activity {
        
    /** Called when the activity is first created. */
        
    private Button btnLinearlayout;

        
    private Button btnTablayout;

        
    private Button btnRelativelayout;

        
    private Button btnFramelayout;

        
    private Button btnAbsolutelayout;

        OnClickListener listener;

        @Override
        
    public void onCreate(Bundle savedInstanceState) {
            
    super.onCreate(savedInstanceState);
            setContentView(R.layout.main);
            CreateControl();

            listener 
    = new OnClickListener() {

                @Override
                
    public void onClick(View v) {
                    
    // TODO Auto-generated method stub
                    switch (v.getId()) {
                        
    case R.id.btnlinearlayout:
                            setTitle(
    "线性布局");
                            setContentView(R.layout.linearlayout);
                            
    break;
                        
    case R.id.btntableayout:
                            setTitle(
    "表格布局");
                            setContentView(R.layout.tablelayout);
                            
    break;
                        
    case R.id.btnrelativelayout:
                            setTitle(
    "相对布局");
                            setContentView(R.layout.relativelayout);
                            
    break;
                        
    case R.id.btnfreamelayout:
                            setTitle(
    "单帧布局");
                            setContentView(R.layout.framelayout);
                            
    break;
                        
    case R.id.btnabsolutelayout:
                            setTitle(
    "坐标布局");
                            setContentView(R.layout.absolutelayout);
                            
    break;
                    }
                }
            };
            btnLinearlayout.setOnClickListener(listener);
            btnTablayout.setOnClickListener(listener);
            btnRelativelayout.setOnClickListener(listener);
            btnFramelayout.setOnClickListener(listener);
            btnAbsolutelayout.setOnClickListener(listener);
        }

        
    private void CreateControl() {
            
    // TODO Auto-generated method stub
            btnLinearlayout = (Button)findViewById(R.id.btnlinearlayout);
            btnTablayout 
    = (Button)findViewById(R.id.btntableayout);
            btnRelativelayout 
    = (Button)findViewById(R.id.btnrelativelayout);
            btnFramelayout 
    = (Button)findViewById(R.id.btnfreamelayout);
            btnAbsolutelayout 
    = (Button)findViewById(R.id.btnabsolutelayout);
        }
    }
    附上源码:

    /Files/renjie/Jay_Layout.rar

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  • 原文地址:https://www.cnblogs.com/renjie/p/2000183.html
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