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ExpandableListView+gallery+自定义view
前段时间在网上看到一个ExpandableListView与gallery相关的例子，感觉做的很不错；自己借用过来做了些许修改，实现了gallery借助手势onFling()方法实现左右自动滑动并带动自定义的view：
package com.qiyi.test;
import java.util.Timer;
import java.util.TimerTask;
import com.qiyi.R;
import com.qiyi.view.FlowView;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.os.Handler;
import android.os.SystemClock;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ExpandableListView.OnGroupCollapseListener;
import android.widget.ExpandableListView.OnGroupExpandListener;
public class QHomeActivity extends Activity {
private ExpandableListView expandableListView;
public String[] groups = new String[]{"一月影视","二月影视","三月影视","四月影视"};
public String[][] childs = new String[4][2];
public int[] tags = new int[]{0,0,0,0};//用来标示每个组展开与收缩
public int[] galleryImage = new int[]{R.drawable.test1, R.drawable.test2,
R.drawable.test3, R.drawable.test1, R.drawable.test2,
R.drawable.test3, R.drawable.test1, R.drawable.test2,
R.drawable.test3};
private ExpandableAdapter adapter;
private View headerView;
private Gallery gallery;
private GalleryAdapter galleryAdapter;
private FlowView flowView;
private Timer timer;
private static final int MSG_SEND1 = 0;
private static final int MSG_SEND2 = 1;
private int index_flag_gallery = 0;//gallery滑动方向索引标志位 0:向右 1：向左
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.q_home);
initView();
timer = new Timer();
timer.scheduleAtFixedRate(new MyTask(), 0, 5000);
}
private class MyTask extends TimerTask{
@Override
public void run() {
if(index_flag_gallery == 0){
handler.sendEmptyMessage(MSG_SEND1);
}else{
handler.sendEmptyMessage(MSG_SEND2);
}
}
}
Handler handler = new Handler(){
public void handleMessage(android.os.Message msg) {
switch (msg.what) {
case MSG_SEND1://通过手势自动滑动gallery
MotionEvent e1 = MotionEvent.obtain(SystemClock.uptimeMillis(),
SystemClock.uptimeMillis(), MotionEvent.ACTION_DOWN,
89.333336f, 265.33334f, 0);
MotionEvent e2 = MotionEvent.obtain(SystemClock.uptimeMillis(),
SystemClock.uptimeMillis(), MotionEvent.ACTION_UP,
300.0f, 238.00003f, 0);
gallery.onFling(e1, e2, -1300, 0);
break;
case MSG_SEND2:
MotionEvent e11 = MotionEvent.obtain(SystemClock.uptimeMillis(),
SystemClock.uptimeMillis(), MotionEvent.ACTION_DOWN,
300.0f, 238.00003f, 0);
MotionEvent e22 = MotionEvent.obtain(SystemClock.uptimeMillis(),
SystemClock.uptimeMillis(), MotionEvent.ACTION_UP,
89.333336f, 265.33334f, 0);
gallery.onFling(e11, e22, 1300, 0);
break;
default:
break;
}
};
};
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
}
private void initView(){
expandableListView = (ExpandableListView) findViewById(R.id.expandableListView1);
adapter = new ExpandableAdapter(this);
headerView = LayoutInflater.from(this).inflate(R.layout.q_header_view, null);
gallery = (Gallery) headerView.findViewById(R.id.home_gallery);
galleryAdapter = new GalleryAdapter(this);
gallery.setAdapter(galleryAdapter);
flowView = (FlowView) headerView.findViewById(R.id.myView);
flowView.setCount(galleryAdapter.getCount());
gallery.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view,
int position, long id) {
flowView.setSeletion(position);
if(position == 0){
index_flag_gallery = 0;
}else if(position == flowView.getCount()-1){
index_flag_gallery = 1;
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
// TODO Auto-generated method stub
}
});
expandableListView.addHeaderView(headerView);
expandableListView.setAdapter(adapter);
//展开
expandableListView.setOnGroupExpandListener(new OnGroupExpandListener() {
@Override
public void onGroupExpand(int groupPosition) {
tags[groupPosition] = 1;
//只展开一项
for(int i=0 ;i<groups.length;i++){
if(groupPosition != i){
expandableListView.collapseGroup(i);
}
}
}
});
//收缩
expandableListView.setOnGroupCollapseListener(new OnGroupCollapseListener() {
@Override
public void onGroupCollapse(int groupPosition) {
tags[groupPosition] = 0;
}
});
}
/**
* gallery adapter
* @author Administrator
*
*/
private class GalleryAdapter extends BaseAdapter{
private Context context;
public GalleryAdapter(Context ctx){
this.context = ctx;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return galleryImage.length;
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return galleryImage[position];
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if(convertView == null){
convertView = LayoutInflater.from(context).inflate(R.layout.gallery_item, null);
}
ImageView imageView = (ImageView) convertView.findViewById(R.id.home_img);
imageView.setImageResource(galleryImage[position]);
return convertView;
}
}
/**
* 二级下拉列表adapter
* @author Administrator
*
*/
private class ExpandableAdapter extends BaseExpandableListAdapter{
private Context context;
public ExpandableAdapter(Context ctx){
this.context = ctx;
for(int i = 0 ;i < 4;i++){
for(int j = 0;j < 2;j++){
childs[i][j] = "child" + i + "_" + j;
}
}
}
@Override
public Object getChild(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return childs[groupPosition][childPosition];
}
@Override
public long getChildId(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
if(convertView == null){
convertView = LayoutInflater.from(context).inflate(R.layout.child_item, null);
}
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
// TODO Auto-generated method stub
return childs[groupPosition].length;
}
@Override
public Object getGroup(int groupPosition) {
// TODO Auto-generated method stub
return groups[groupPosition];
}
@Override
public int getGroupCount() {
// TODO Auto-generated method stub
return groups.length;
}
@Override
public long getGroupId(int groupPosition) {
// TODO Auto-generated method stub
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
GroupHolder groupHolder = null;
if(convertView == null){
groupHolder = new GroupHolder();
convertView = LayoutInflater.from(context).inflate(R.layout.group_item, null);
groupHolder.imageView = (ImageView) convertView.findViewById(R.id.tag_img);
groupHolder.title = (TextView) convertView.findViewById(R.id.title_view);
convertView.setTag(groupHolder);
}else{
groupHolder = (GroupHolder) convertView.getTag();
}
if(tags[groupPosition] == 0){
groupHolder.imageView.setImageResource(R.drawable.list_indecator_button);
}else{
groupHolder.imageView.setImageResource(R.drawable.list_indecator_button_down);
}
groupHolder.title.setText(groups[groupPosition]);
return convertView;
}
@Override
public boolean hasStableIds() {
// TODO Auto-generated method stub
return true;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return true;
}
class GroupHolder{
ImageView imageView;
TextView title;
}
}
}
下面是自定义的view：
package com.qiyi.view;
import com.qiyi.R;
import android.R.integer;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
public class FlowView extends View{
private int count;
private float space,radius;
private int point_normal_color,point_selected_color;
//选中
private int seleted = 0;
public FlowView(Context context, AttributeSet attrs) {
super(context, attrs);
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.FlowViewStyle);
count = a.getInteger(R.styleable.FlowViewStyle_count, 4);
space = a.getDimension(R.styleable.FlowViewStyle_space, 9);
radius = a.getDimension(R.styleable.FlowViewStyle_point_radius, 9);
point_normal_color = a.getColor(R.styleable.FlowViewStyle_point_normal_color, 0x000000);
point_selected_color = a.getColor(R.styleable.FlowViewStyle_point_seleted_color, 0xffff07);
int sum = attrs.getAttributeCount();
/*if(true){
String str = "";
for(int i=0;i<sum;i++){
String name = attrs.getAttributeName(i);
String value = attrs.getAttributeValue(i);
str += "attr_name:" + name + ": " + value + "\n";
}
}*/
a.recycle();
}
public void setSeletion(int index){
this.seleted = index;
invalidate();
}
public void setCount(int count){
this.count = count;
invalidate();
}
public int getCount(){
return count;
}
public void next(){
if(seleted < count - 1){
seleted++;
}else{
seleted = 0;
}
invalidate();
}
public void previous(){
if(seleted > 0){
seleted --;
}else{
seleted = count - 1;
}
invalidate();
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
Paint paint = new Paint();
paint.setAntiAlias(true);
float width = (getWidth() - ((radius*2*count) + (space*(count-1))))/2.f;
for(int i=0;i < count;i++){
if(i == seleted){
paint.setColor(point_selected_color);
}else{
paint.setColor(point_normal_color);
}
canvas.drawCircle(width + getPaddingLeft() + radius + i
* (space + radius + radius), getHeight() / 2, radius, paint);
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
//裁定绘制图样的区域
setMeasuredDimension(measureWith(widthMeasureSpec), measureHeight(heightMeasureSpec));
}
private int measureWith(int measureSpec){
int result = 0;
int specMode = MeasureSpec.getMode(measureSpec);
int specSize = MeasureSpec.getSize(measureSpec);
if(specMode == MeasureSpec.EXACTLY){
result = specSize;
}else{
result = (int)(getPaddingLeft()+getPaddingRight()+(count*2*radius)+(count-1)*radius+1);
}
return result;
}
private int measureHeight(int measureSpec) {
int result = 0;
int specMode = MeasureSpec.getMode(measureSpec);
int specSize = MeasureSpec.getSize(measureSpec);
if (specMode == MeasureSpec.EXACTLY) {
result = specSize;
} else {
result = (int) (2 * radius + getPaddingTop() + getPaddingBottom() + 1);
if (specMode == MeasureSpec.AT_MOST) {
result = Math.min(result, specSize);
}
}
return result;
}
}
用于指定自定义view的属性的xml文件(values目录下)：
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="FlowViewStyle">
<attr name="count" format="integer"/>
<attr name="space" format="dimension"/>
<attr name="point_size" format="dimension"/>
<attr name="point_seleted_color" format="color|reference"/>
<attr name="point_normal_color" format="color|reference"/>
<attr name="point_radius" format="dimension"/>
</declare-styleable>
</resources>
选择样式文件(values目录下):
<?xml version="1.0" encoding="utf-8"?>
<resources>
<drawable name="transparent">#00000000</drawable>
</resources>
<?xml version="1.0" encoding="utf-8"?>
<selector
xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/transparent" android:state_expanded="true"></item>
<item android:drawable="@drawable/transparent"></item>
</selector>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<include layout="@layout/title_view"/>
<ExpandableListView android:id="@+id/expandableListView1"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:groupIndicator="@drawable/tag_but_background">
</ExpandableListView>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res/com.qiyi"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Gallery android:id="@+id/home_gallery"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:spacing="5dip"/>
<LinearLayout android:id="@+id/linearLayout1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:orientation="vertical"
android:background="#65000000">
<TextView android:text="好影视，一网打尽"
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="5dip"
android:layout_marginTop="5dip"
android:textColor="#ffffff"
android:textSize="18dip">
</TextView>
<com.qiyi.view.FlowView
android:id="@+id/myView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dip"
app:count="4"
android:gravity="center"
app:point_normal_color="#45000000"
app:point_radius="3dip"
app:point_seleted_color="#ffffff"
app:point_size="5dip"
app:space="10dip">
</com.qiyi.view.FlowView>
</LinearLayout>
</FrameLayout>
- 大小: 25.3 KB
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