Java Android自定义列表SimpleAdapter-选择行图标
布局:Java Android自定义列表SimpleAdapter-选择行图标,java,android,listadapter,Java,Android,Listadapter,布局: <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="vertical" android:background="@android:color/black"> <LinearLayout
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="@android:color/black">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:layout_width="40dp"
android:layout_height="40dp"
android:id="@+id/icon"/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView android:id="@+id/line_a"
android:textSize="14dp"
android:textColor="@android:color/white"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textStyle="bold"/>
<TextView android:id="@+id/line_b"
android:textSize="10dp"
android:textColor="@android:color/darker_gray"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
</LinearLayout>
SimpleAdapter sa;
ArrayList<HashMap<String,String>> list = new ArrayList<HashMap<String,String>>();
HashMap<String,String> item;
for(int i = 0; i < j; i++){
item = new HashMap<String,String>();
item.put( "line1", ListData[i][0]);
item.put( "line2", ListData[i][1]);
item.put( "type", ListData[i][2]);
list.add( item );
}
sa = new SimpleAdapter(this, list,
R.layout.two_lines_list,
new String[] { "line1","line2" },
new int[] {R.id.line_a, R.id.line_b});
// can you add the setImageView here? If yes, how?
setListAdapter( sa );
}
Java:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="@android:color/black">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:layout_width="40dp"
android:layout_height="40dp"
android:id="@+id/icon"/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView android:id="@+id/line_a"
android:textSize="14dp"
android:textColor="@android:color/white"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textStyle="bold"/>
<TextView android:id="@+id/line_b"
android:textSize="10dp"
android:textColor="@android:color/darker_gray"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
</LinearLayout>
SimpleAdapter sa;
ArrayList<HashMap<String,String>> list = new ArrayList<HashMap<String,String>>();
HashMap<String,String> item;
for(int i = 0; i < j; i++){
item = new HashMap<String,String>();
item.put( "line1", ListData[i][0]);
item.put( "line2", ListData[i][1]);
item.put( "type", ListData[i][2]);
list.add( item );
}
sa = new SimpleAdapter(this, list,
R.layout.two_lines_list,
new String[] { "line1","line2" },
new int[] {R.id.line_a, R.id.line_b});
// can you add the setImageView here? If yes, how?
setListAdapter( sa );
}
simpledaptersa;
ArrayList=新建ArrayList();
HashMap项;
对于(int i=0;i
如何使图标从res/drawable获取图像。。。根据类型(在HashMap中插入的ListData[i][2])?例如,如果类型为“1”,则应在两行开始处设置icon1.png您应覆盖
simpledapter.getView(int-position、View-convertView、ViewGroup-parent)
方法,并获取具有当前位置的列表项(该方法中的第一个参数),然后检查设置图标所需的值集
注意:为了提高性能,最好在getView
方法中使用ViewHolder模式