• [转]简约而不简单——Android SimpleAdapter


    列表(ListView)、表格(GridView),这在手机应用上面肯定是少不了的,怎样实现比较复杂一点的界面呢,先看一下我的效果图。

    image image

    这样布局的情况是最基本的,也是最常用的,网上关于这样的布局有多种版本的实现方法,但是有很多需要自己实现Adapter,那样子是比较复杂而且没有必要的,因为我们有简约而不简单的SimpleAdapter。

    1. ListView

    SimpleAdapter的核心代码:

    		for (int i = 0; i < 10; i++) {
    			Map<String, Object> map = new HashMap<String, Object>();
    			map.put("PIC", R.drawable.pic);
    			map.put("TITLE", "Test Title");
    			map.put("CONTENT", "Test Content");
    			contents.add(map);
    		}
    		SimpleAdapter adapter = new SimpleAdapter(this,
    				(List<Map<String, Object>>) contents, R.layout.listitem,
    				new String[] { "PIC", "TITLE", "CONTENT" }, new int[] {
    						R.id.listitem_pic, R.id.listitem_title,
    						R.id.listitem_content });
    
    		listView.setAdapter(adapter);

    listitem的Layout:

    <?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="?android:attr/listPreferredItemHeight">
    	<ImageView android:id="@+id/listitem_pic"
    		android:layout_width="wrap_content" android:layout_height="fill_parent"
    		android:layout_alignParentTop="true" android:layout_alignParentBottom="true"
    		android:src="@drawable/pic" android:adjustViewBounds="true"
    		android:padding="2dip" />
    	<TextView android:id="@+id/listitem_title"
    		android:layout_width="wrap_content" android:layout_height="wrap_content"
    		android:layout_toRightOf="@+id/listitem_pic"
    		android:layout_alignParentRight="true" android:layout_alignParentTop="true"
    		android:layout_above="@+id/listitem_content"
    		android:layout_alignWithParentIfMissing="true" android:gravity="center_vertical"
    		android:text="@+id/listitem_title" android:textSize="22px" />
    	<TextView android:id="@+id/listitem_content"
    		android:layout_width="fill_parent" android:layout_height="wrap_content"
    		android:layout_toRightOf="@+id/listitem_pic"
    		android:layout_alignParentBottom="true"
    		android:layout_alignParentRight="true" android:singleLine="true"
    		android:ellipsize="marquee" android:text="@+id/item_content"
    		android:textSize="14px" />
    </RelativeLayout>

    2. GridView

    SimpleAdapter的核心代码:

    		for (int i = 0; i < 10; i++) {
    			Map<String, Object> map = new HashMap<String, Object>();
    			map.put("PIC", R.drawable.pic);
    			map.put("TITLE", "Test Title");
    			contents.add(map);
    		}
    		SimpleAdapter adapter = new SimpleAdapter(this,
    				(List<Map<String, Object>>) contents, R.layout.griditem,
    				new String[] { "PIC", "TITLE" }, new int[] { R.id.griditem_pic,
    						R.id.griditem_title, });
    
    		gridView.setAdapter(adapter);


    griditem的Layout:

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    	android:layout_height="fill_parent" android:layout_width="fill_parent"
    	android:orientation="vertical">
    	<ImageView android:id="@+id/griditem_pic"
    		android:layout_width="wrap_content" android:layout_height="wrap_content"
    		android:layout_gravity="center_horizontal">
    	</ImageView>
    	<TextView android:id="@+id/griditem_title"
    		android:layout_width="wrap_content" android:layout_height="wrap_content"
    		android:layout_gravity="center_horizontal" android:text="test">
    	</TextView>
    </LinearLayout>

    最后附上代码:https://files.cnblogs.com/game-over/test.zip

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  • 原文地址:https://www.cnblogs.com/xiangtailiang/p/3411931.html
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