【移动应用开发技术】支持多项选择的ExpandableListView怎么用

【移动应用开发技术】支持多项选择的ExpandableListView怎么用

目标（需求）：结果图：/upload/information/20200623/125/122727.jpg实现：<?xml

version="1.0"

encoding="utf-8"?>

<com.home.mymultichecklistview.CheckableLinearLayout

xmlns:android="/apk/res/android"

android:id="@+id/layout"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="horizontal"

>

<com.home.mymultichecklistview.CheckableTextView

android:id="@+id/item"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginTop="6dip"

android:layout_weight="1"

/>

<com.home.mymultichecklistview.InertCheckBox

android:id="@+id/checkbox"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginRight="5dp"

android:maxWidth="40dp"

android:maxHeight="40dp"

android:focusable="false"

android:layout_gravity="right"

android:button="@drawable/checkbox"

/>

</com.home.mymultichecklistview.CheckableLinearLayout>@Override

public

View

getGroupView(int

groupPosition,

boolean

isExpanded,

View

convertView,

ViewGroup

parent)

{

View

groupView

=

convertView;

if

(groupView

==

null)

{

groupView

=

new

TextView(context);

((TextView)groupView).setGravity(Gravity.LEFT

|

Gravity.CENTER_VERTICAL);

groupView.setPadding(50,0,0,0);

}

((TextView)groupView).setText(groupData[groupPosition]);

((TextView)groupView).setTextColor(context.getResources().getColor(R.color.fgcolor));

return

groupView;

}

@Override

public

View

getChildView(final

int

groupPosition,

final

int

childPosition,

boolean

isLastChild,

View

convertView,

ViewGroup

parent)

{

View

itemView

=

convertView;

final

ViewHolder

vh;

if

(itemView

==

null)

{

LayoutInflater

inflater

=

(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

itemView

=

inflater.inflate(R.layout.item_view,

null);

vh

=

new

ViewHolder();

vh.layout

=

(CheckableLinearLayout)itemView.findViewById(R.id.layout);

vh.item

=

(TextView)itemView.findViewById(R.id.item);

itemView.setTag(vh);

}

else

{

vh

=

(ViewHolder)itemView.getTag();

}

vh.item.setText(itemData[groupPosition][childPosition]);

final

ExpandableListView

listView

=

((ExpandableListView)((MainActivity)context).findViewById(R.id.list));

final

int

position

=

listView.getFlatListPosition(ExpandableListView.getPackedPositionForChild(groupPosition,

childPosition));

listView.setItemChecked(position,

checkedState[groupPosition][childPosition]);

vh.layout.setOnClickListener(new

OnClickListener()

{

@Override

public

void

onClick(View

v)

{

((CheckableLinearLayout)v).toggle();

checkedState[groupPosition][childPosition]

=

!checkedState[groupPosition][childPosition];

listView.setItemChecked(position,

((CheckableLinearLayout)v).isChecked());

}

});

return

itemView;

}public

View

getChildView(final

int

groupPosition,

final

int

childPosition,

boolean

isLastChild,

View

convertView,

ViewGroup

parent)

{

View

itemView

=

convertView;

final

ViewHolder

vh;

...

final

int

position

=

listView.getFlatListPosition(ExpandableListView.getPackedPositionForChild(groupPosition,

childPosition));

listView.setItemChecked(position,

checkedState[groupPosition][childPosition]);

vh.layout.setOnClickListener(new

OnClickListener()

{

@Override

public

void

onClick(View

v)

{

((CheckableLinearLayout)v).toggle();

checkedState[groupPosition][childPosition]

=

!checkedState[groupPosition][childPosition];

listView.setItemChecked(position,

((CheckableLinearLayout)v).isChecked());

}

});

return

itemView;

}public

class

InertCheckBox

extends

CheckBox

{

@Override

public

boolean

onKeyDown(int

keyCode,

KeyEvent

event)

{

//直接返回false

return

false;

}

@Override

public

boolean

onKeyUp(int

keyCode,

KeyEvent

event)

{

//直接返回false

return

false;

}

@Override

public

boolean

onTouchEvent(MotionEvent

event)

{

//直接返回false

return

false;

}

@Override

public

boolean

onKeyMultiple(int

keyCode,

int

repeatCount,

KeyEvent

event)

{

//直接返回false

return

false;

...

}public

class

CheckableLinearLayout

extends

LinearLayout

implements

Checkable

{

...

@Override

public

void

setChecked(boolean

checked)

{

this.isChecked

=

checked;

for

(Checkable

view

:

checkableViews)

{

view.setChecked(checked);

}

}

@Override

public

boolean

isChecked()

{

return

this.isChecked;

}

@Override

public

void

toggle()

{

isChecked

=

!isChecked;

for

(Checkable

view

:

checkableViews)

{

view.toggle();

}

}

@Override

protected

void

onFinishInflate()

{

super.onFinishInflate();

for

(int

i=0;

i<this.getChildCount();

i++)

{

findCheckableChild(this.getChildAt(i));

}

}

private

void

findCheckableChild(View

child)

{

if

(child

instance