GridView 横向滚动
tihi 2012-08-15
GridView横向滚动.
分类：androidjava2012-08-0723:1681人阅读评论(0)收藏举报
GridView和ListView都是android比较重要的控件，但是横滚的控件不是太多。
这里介绍怎么把GridView横向滚动起来，看到其他网友也有相应的解决方法，自己只是把这些知识总结一下，供大家参考！
首先让GridView横向滚动需要HorizontalScrollView这个控件，例如：
[html]viewplaincopyprint?
01.<SPANstyle="FONT-FAMILY:'MicrosoftYaHei';FONT-SIZE:14px"><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
02.xmlns:tools="http://schemas.android.com/tools"
03.android:layout_width="fill_parent"
04.android:layout_height="fill_parent">
05.
06.<HorizontalScrollView
07.android:layout_width="fill_parent"
08.android:layout_height="wrap_content"
09.android:scrollbars="none">
10.
11.<LinearLayout
12.android:layout_width="fill_parent"
13.android:layout_height="wrap_content"
14.android:orientation="horizontal">
15.
16.<GridView
17.android:id="@+id/gridview"
18.android:layout_width="fill_parent"
19.android:layout_height="wrap_content"
20.android:layout_gravity="center">
21.</GridView>
22.</LinearLayout>
23.</HorizontalScrollView>
24.
25.</LinearLayout></SPAN>
<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<HorizontalScrollView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:scrollbars="none">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<GridView
android:id="@+id/gridview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center">
</GridView>
</LinearLayout>
</HorizontalScrollView>
</LinearLayout>
以上是主要布局，然后我们写GridView中每个item中的布局，比较简单，只是给大家介绍下：
[html]viewplaincopyprint?
01.<SPANstyle="FONT-FAMILY:'MicrosoftYaHei';FONT-SIZE:14px"><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
02.xmlns:tools="http://schemas.android.com/tools"
03.android:layout_width="fill_parent"
04.android:layout_height="wrap_content"
05.android:orientation="vertical">
06.
07.<ImageView
08.android:layout_width="100dp"
09.android:layout_height="100dp"
10.android:background="#00ff00"/>
11.
12.<TextView
13.android:id="@+id/item_textview"
14.android:layout_width="100dp"
15.android:layout_height="20dp"
16.android:gravity="center"/>
17.
18.</LinearLayout></SPAN>
<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:layout_width="100dp"
android:layout_height="100dp"
android:background="#00ff00"/>
<TextView
android:id="@+id/item_textview"
android:layout_width="100dp"
android:layout_height="20dp"
android:gravity="center"/>
</LinearLayout>
上面是item的布局，比较简单，就是一个ImageView和TextView,然后是主要实现GridView的Adapter。
以下是Activity的实现方法。
[java]viewplaincopyprint?
01.<SPANstyle="FONT-FAMILY:'MicrosoftYaHei';FONT-SIZE:14px">publicclassMainActivityextendsActivity{
02.
03.privateGridViewgridView;
04.privateLayoutInflaterinflater;
05.privateList<String>dataList=newArrayList<String>();
06.
07.@Override
08.publicvoidonCreate(BundlesavedInstanceState){
09.super.onCreate(savedInstanceState);
10.setContentView(R.layout.activity_main);
11.gridView=(GridView)this.findViewById(R.id.gridview);
12.for(inti=0;i<10;i++){
13.dataList.add("测试"+i);
14.}
15.inflater=(LayoutInflater)this
16..getSystemService(Context.LAYOUT_INFLATER_SERVICE);
17.GridViewAdapteradapter=newGridViewAdapter();
18.gridView.setAdapter(adapter);
19.intsize=dataList.size();
20.DisplayMetricsdm=newDisplayMetrics();
21.getWindowManager().getDefaultDisplay().getMetrics(dm);
22.floatdensity=dm.density;
23.intallWidth=(int)(110*size*density);
24.intitemWidth=(int)(100*density);
25.LinearLayout.LayoutParamsparams=newLinearLayout.LayoutParams(
26.allWidth,LinearLayout.LayoutParams.FILL_PARENT);
27.gridView.setLayoutParams(params);
28.gridView.setColumnWidth(itemWidth);
29.gridView.setHorizontalSpacing(10);
30.gridView.setStretchMode(GridView.NO_STRETCH);
31.gridView.setNumColumns(size);
32.}
33.
34.@Override
35.publicbooleanonCreateOptionsMenu(Menumenu){
36.getMenuInflater().inflate(R.menu.activity_main,menu);
37.returntrue;
38.}
39.
40.finalclassGridViewAdapterextendsBaseAdapter{
41.
42.@Override
43.publicintgetCount(){
44.returndataList.size();
45.}
46.
47.@Override
48.publicObjectgetItem(intposition){
49.returndataList.get(position);
50.}
51.
52.@Override
53.publiclonggetItemId(intposition){
54.returnposition;
55.}
56.
57.@Override
58.publicViewgetView(intposition,ViewconvertView,ViewGroupparent){
59.convertView=inflater.inflate(R.layout.gridview_item,null);
60.TextViewtextView=(TextView)convertView
61..findViewById(R.id.item_textview);
62.Stringstr=dataList.get(position);
63.textView.setText(str);
64.returnconvertView;
65.}
66.
67.}
68.}</SPAN>
publicclassMainActivityextendsActivity{
privateGridViewgridView;
privateLayoutInflaterinflater;
privateList<String>dataList=newArrayList<String>();
@Override
publicvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gridView=(GridView)this.findViewById(R.id.gridview);
for(inti=0;i<10;i++){
dataList.add("测试"+i);
}
inflater=(LayoutInflater)this
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
GridViewAdapteradapter=newGridViewAdapter();
gridView.setAdapter(adapter);
intsize=dataList.size();
DisplayMetricsdm=newDisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
floatdensity=dm.density;
intallWidth=(int)(110*size*density);
intitemWidth=(int)(100*density);
LinearLayout.LayoutParamsparams=newLinearLayout.LayoutParams(
allWidth,LinearLayout.LayoutParams.FILL_PARENT);
gridView.setLayoutParams(params);
gridView.setColumnWidth(itemWidth);
gridView.setHorizontalSpacing(10);
gridView.setStretchMode(GridView.NO_STRETCH);
gridView.setNumColumns(size);
}
@Override
publicbooleanonCreateOptionsMenu(Menumenu){
getMenuInflater().inflate(R.menu.activity_main,menu);
returntrue;
}
finalclassGridViewAdapterextendsBaseAdapter{
@Override
publicintgetCount(){
returndataList.size();
}
@Override
publicObjectgetItem(intposition){
returndataList.get(position);
}
@Override
publiclonggetItemId(intposition){
returnposition;
}
@Override
publicViewgetView(intposition,ViewconvertView,ViewGroupparent){
convertView=inflater.inflate(R.layout.gridview_item,null);
TextViewtextView=(TextView)convertView
.findViewById(R.id.item_textview);
Stringstr=dataList.get(position);
textView.setText(str);
returnconvertView;
}
}
}
主要是设置GridView的LayoutParams，new这个LayoutParams对象必须是这个View所在Layout的布局类型，然后设置GridView总长度和每个item的长度，然后设置总个数就可以实现横滚的效果！
