ListView for multi-select/Radio

http://blog.csdn.net/ljfbest/article/details/40685327

The ListView itself has a single, multi-select mode, which can be set by Listview.setchoicemode:

Listview.setchoicemode (listview.choice_mode_multiple);//Turn on multi-select mode listview.setchoicemode ( Listview.choice_mode_single);//Open Radio mode Listview.setchoicemode (listview.choice_mode_none);//default mode Listview.setchoicemode (Listview.choice_mode_multiple_modal);//not used, do not know what to do

implementing a single selectionRequired settings: Listview.setchoicemode (Listview.choice_mode_single);
the ListView control also needs to specify a selector:android:listselector= "@drawable/checkable_item_selector" [HTML]View Plaincopy

2. <selector xmlns:android="http://schemas.android.com/apk/res/android">
4. <item android:drawable= "@color/c1" android:state_pressed="true"/>
6. <item android:drawable= "@color/c1" android:state_checked="true"/>
8. <item android:drawable="@color/c2"/>
10. </selector>

but the color of the single-selection is still the system-selected color, not the C1 you set, do not know why?
implement multi-selectsetting: Listview.setchoicemode (Listview.choice_mode_single);
To implement the Checkable interface for each item's view, the following is the LinearLayout implementation checkable interface: [Java]View Plaincopy

2. Public class Checkablelinearlayout extends LinearLayout implements checkable {
4. private Boolean mchecked;
6. Public checkablelinearlayout (context context, AttributeSet attrs) {
8. Super (context, attrs);
10. }
12. @Override
14. public void Setchecked (boolean checked) {
16. mchecked = checked;
18. Setbackgrounddrawable (checked? New Colordrawable (0xff0000a0): null); Blue appears when selected
20. }
22. @Override
24. Public Boolean isChecked () {
26. return mchecked;
28. }
30. @Override
32. public void Toggle () {
34. Setchecked (!mchecked);
36. }
38. }

Use as follows: [HTML]View Plaincopy

2. <com.ljfbest.temp.CheckableLinearLayout xmlns:android="http://schemas.android.com/apk/res/ Android "
4. android:layout_width="match_parent"
6. android:layout_height="wrap_content">
8. <TextView
10. android:id="@+id/tv"
12. android:layout_width="match_parent"
14. android:layout_height="wrap_content"
16. android:gravity="center_vertical"
18. android:minheight="? Android:attr/listpreferreditemheightsmall"
20. android:paddingend="? android:attr/listpreferreditempaddingend"
22. android:paddingstart="? Android:attr/listpreferreditempaddingstart"
24. android:textappearance="? Android:attr/textappearancelistitemsmall" />
26. </com.ljfbest.temp.CheckableLinearLayout>

The demo chart is attached below:

Here are a few APIs to get/set the selected entry information:Listview.getcheckeditemcount ();//Gets the selected number of rows: invalid for Choice_mode_nonelistview.getcheckeditemposition ();//Gets the selected row, only valid for radio mode, returns an intlistview.getcheckeditemids ();//Gets the IDs of the selected entries, which is the long[] type, note that adapter Hasstableids () is required to return true, And these IDs are returned by adapter's getitemid (int position). Demo in Demo

listview.setitemchecked (position, value);//Set the state of a line

ListView for multi-select/Radio