Android学习教程之动态GridView控件使用（6）

本文实例为大家分享了android动态gridview控件使用的具体代码，供大家参考，具体内容如下

mainactivity.java代码:

package siso.haha;

import android.content.intent;
import android.support.v7.app.appcompatactivity;
import android.os.bundle;
import android.view.view;
import android.widget.button;

public class mainactivity extends appcompatactivity {
 private button btnstaggeredgridview;

 @override
 protected void oncreate(bundle savedinstancestate) {
 super.oncreate(savedinstancestate);
 setcontentview(r.layout.activity_main);

 btnstaggeredgridview=(button)findviewbyid(r.id.btnstaggeredgridview);
 btnstaggeredgridview.setonclicklistener(new view.onclicklistener() {
  @override
  public void onclick(view v) {
  intent intent = new intent();
  intent.setclass(mainactivity.this,staggeredgridviewactivity.class);
  //直接启动一个activity
  startactivity(intent);
  }
 });


 }
}

staggeredgridviewactivity.java代码:

package siso.haha;

import android.app.activity;
import android.content.context;
import android.os.bundle;
import android.util.log;
import android.view.layoutinflater;
import android.view.menu;
import android.view.view;
import android.view.viewgroup;
import android.widget.baseadapter;

import java.util.random;

import viewhelper.staggeredgridview;
import viewhelper.staggeredgridview.layoutparams;

public class staggeredgridviewactivity extends activity
{
 private final static string tag = staggeredgridviewactivity.class.getsimplename();
 private staggeredgridview msgv;
 private sgvadapter madapter;

 private staggeredgridview.onscrolllistener mscrolllistener = new staggeredgridview.onscrolllistener() {

 @override
 public void onscrollstatechanged(viewgroup view, int scrollstate) {
  log.d(tag, "[onscrollstatechanged] scrollstate:" + scrollstate);
  switch (scrollstate) {
  case scroll_state_idle:
   settitle("scroll_state_idle");
   break;

  case scroll_state_fling:
   settitle("scroll_state_fling");
   break;

  case scroll_state_touch_scroll:
   settitle("scroll_state_touch_scroll");
   break;

  default:
   break;
  }

 }

 @override
 public void onscroll(viewgroup view, int firstvisibleitem, int visibleitemcount, int totalitemcount) {
  log.d(tag, "[onscroll] firstvisibleitem:" + firstvisibleitem + " visibleitemcount:"+visibleitemcount + " totalitemcount:" + totalitemcount);

 }
 };

 @override
 protected void oncreate(bundle savedinstancestate)
 {
 super.oncreate(savedinstancestate);
 setcontentview(r.layout.activity_staggeredgridview);

 madapter = new sgvadapter(this);
 msgv = (staggeredgridview) findviewbyid(r.id.grid);
 msgv.setcolumncount(4);
 msgv.setadapter(madapter);
 msgv.setonscrolllistener(mscrolllistener);
 }

 @override
 public boolean oncreateoptionsmenu(menu menu)
 {
 // inflate the menu; this adds items to the action bar if it is present.
 // getmenuinflater().inflate(r.menu.activity_main, menu);
 return true;
 }

 private final class sgvadapter extends baseadapter
 {

 layoutinflater minflater;

 public sgvadapter(context ctx)
 {
  minflater = layoutinflater.from(ctx);
 }

 @override
 public int getcount()
 {
  return 30;
 }

 @override
 public object getitem(int position)
 {
  return null;
 }

 @override
 public long getitemid(int position)
 {
  return 0;
 }

 random r = new random();

 @override
 public view getview(int position, view convertview, viewgroup parent)
 {
  //layoutparams相当于一个layout的信息包，它封装了layout的位置、高、宽等信息。假设在屏幕上一块区域是由一个layout占领的，如果将一个view添加到一个layout中，最好告诉layout用户期望的布局方式，也就是将一个认可的layoutparams传递进去。
  /*可以这样去形容layoutparams，在象棋的棋盘上，每个棋子都占据一个位置，也就是每个棋子都有一个位置的信息，如这个棋子在4行4列，这里的“4行4列”就是棋子的layoutparams。
  但layoutparams类也只是简单的描述了宽高，宽和高都可以设置成三种值：
  1，一个确定的值；
  2，fill_parent，即填满（和父容器一样大小）；
  3，wrap_content，即包裹住组件就好。*/
  final layoutparams lp;
  final view v;
  switch (position)
  {
  case 0:
  case 29:
   v = minflater.inflate(r.layout.element_header, parent, false);
   lp = new layoutparams(v.getlayoutparams());
   lp.span = msgv.getcolumncount();
   break;
  case 8:
  case 9:
  case 18:
  case 19:
   v = minflater.inflate(r.layout.element_item_small, parent, false);
   lp = new layoutparams(v.getlayoutparams());
   lp.span = 1;
   break;
  case 10:
  case 20:
   v = minflater.inflate(r.layout.element_item_large, parent, false);
   lp = new layoutparams(v.getlayoutparams());
   lp.span = 4;
   break;
  default:
   v = minflater.inflate(r.layout.element_item, parent, false);
   lp = new layoutparams(v.getlayoutparams());
   lp.span = 2;
   break;
  }
  v.setlayoutparams(lp);
  return v;
 }
 }

}

activity_main.xml内容:

<?xml version="1.0" encoding="utf-8"?>
<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"
 android:paddingleft="@dimen/activity_horizontal_margin"
 android:paddingright="@dimen/activity_horizontal_margin"
 android:paddingtop="@dimen/activity_vertical_margin"
 android:paddingbottom="@dimen/activity_vertical_margin"
 tools:context="siso.haha.mainactivity">


 <button
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="动态gridview"
 android:id="@+id/btnstaggeredgridview"
 android:layout_alignparenttop="true"
 android:layout_centerhorizontal="true" />

 <button
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="new button"
 android:id="@+id/button2"
 android:layout_below="@+id/btnstaggeredgridview"
 android:layout_centerhorizontal="true" />

 <button
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="new button"
 android:id="@+id/button3"
 android:layout_below="@+id/button2"
 android:layout_centerhorizontal="true" />

 <button
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="new button"
 android:id="@+id/button4"
 android:layout_below="@+id/button3"
 android:layout_centerhorizontal="true" />

 <button
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="new button"
 android:id="@+id/button5"
 android:layout_below="@+id/button4"
 android:layout_centerhorizontal="true" />

 <button
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="new button"
 android:id="@+id/button6"
 android:layout_below="@+id/button5"
 android:layout_centerhorizontal="true" />

 <button
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="new button"
 android:id="@+id/button7"
 android:layout_below="@+id/button6"
 android:layout_centerhorizontal="true" />

 <button
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="new button"
 android:id="@+id/button8"
 android:layout_below="@+id/button7"
 android:layout_centerhorizontal="true" />

 <button
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="new button"
 android:id="@+id/button9"
 android:layout_below="@+id/button8"
 android:layout_centerhorizontal="true" />

 <button
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="new button"
 android:id="@+id/button10"
 android:layout_alignparentbottom="true"
 android:layout_centerhorizontal="true" />
</relativelayout>

activity_staggeredgridview.xml内容:

<?xml version="1.0" encoding="utf-8"?>

 <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=".staggeredgridviewactivity" >

 <viewhelper.staggeredgridview
  android:id="@+id/grid"
  android:layout_width="match_parent"
  android:layout_height="match_parent" />

 </relativelayout>

其他：

element_header.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="56dp"
 android:background="@drawable/bg_white_box"
 android:gravity="center_vertical"
 android:orientation="horizontal" >

 <button
 android:id="@+id/button1"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_weight="1"
 android:text="做一点事..." />

 <progressbar
 android:id="@+id/progressbar1"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_weight="1" />

</linearlayout>

element_item.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="wrap_content"
 android:background="@drawable/bg_white_box"
 android:orientation="vertical"
 android:padding="2dp" >

 <imageview
 android:id="@+id/imageview1"
 android:layout_width="match_parent"
 android:layout_height="100dp"
 android:src="@android:color/holo_green_light" />

 <textview
 android:id="@+id/textview1"
 android:layout_width="match_parent"
 android:layout_height="56dp"
 android:layout_margin="8dp"
 android:drawableright="@android:drawable/ic_menu_info_details"
 android:gravity="center_vertical"
 android:lines="2"
 android:text="列表项文本在这里，图像上面"
 android:textappearance="?android:attr/textappearance" />

</linearlayout>

element_item_large.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="wrap_content"
 android:background="@drawable/bg_white_box"
 android:orientation="vertical"
 android:padding="2dp" >

 <imageview
 android:id="@+id/imageview1"
 android:layout_width="match_parent"
 android:layout_height="160dp"
 android:src="@android:color/holo_orange_light" />

 <textview
 android:id="@+id/textview1"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:layout_margin="8dp"
 android:drawableright="@android:drawable/ic_menu_info_details"
 android:gravity="center_vertical"
 android:lines="2"
 android:text="列表项文本在这里，图像上面"
 android:textappearance="?android:attr/textappearance" />

</linearlayout>

element_item_small.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="wrap_content"
 android:background="@drawable/bg_white_box"
 android:orientation="vertical"
 android:padding="2dp" >

 <imageview
 android:id="@+id/imageview1"
 android:layout_width="match_parent"
 android:layout_height="100dp"
 android:src="@android:color/holo_red_light" />

 <textview
 android:id="@+id/textview1"
 android:layout_width="match_parent"
 android:layout_height="56dp"
 android:layout_margin="8dp"
 android:drawableright="@android:drawable/ic_menu_info_details"
 android:gravity="center_vertical"
 android:lines="2"
 android:text="列表项文本在这里，图像上面"
 android:textappearance="?android:attr/textappearance" />

</linearlayout>

bg_white_box.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
 android:shape="rectangle" >

 <solid android:color="@android:drawable/screen_background_light" />

 <stroke
 android:width="1dp"
 android:color="@android:color/holo_blue_dark" />

</shape>

运行结果如图:

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。