自定义类似Gridview 不同行列数不同 的显示控件

显示不同行不同列的数据，使用的适配器必须与 自己的显示控件对应，适配器也需要重新定义，

控件如下

import java.util.LinkedList;
import java.util.Queue;
import android.annotation.SuppressLint;
import android.content.Context;
import android.database.DataSetObserver;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.view.GestureDetector.OnGestureListener;
import android.widget.AdapterView;
import android.widget.ListAdapter;
import android.widget.Scroller;
/**
* 候选词与符号显示控件
* 不同行不同列
* @author q
*
*/
public class GridDCView extends AdapterView<ListAdapter> {
protected ListAdapter mAdapter;
private int mTopViewIndex = -1;
private int mBottomViewIndex = 0;
protected int mCurrentY;
protected int mNextY;
private int mMaxY = Integer.MAX_VALUE;
private int mDisplayOffset = 0;
protected Scroller mScroller;
private GestureDetector mGesture;
private Queue<View> mRemovedViewQueue = new LinkedList<View>();
private OnItemClickListener mOnItemClicked = null;
private boolean mIsSetAD = false;
/**
* 数据是否发生了变化
*/
private boolean mDataChanged = false;
private boolean mBlockTouchAction = false;
private Rect mRect = new Rect();
private View mViewBeingTouched = null;
private boolean isScroll = false;
private float mYposition = 0;

public GridDCView(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
initView();
setWillNotDraw(false);
}

private synchronized void initView() {
mTopViewIndex = -1;
mBottomViewIndex = 0;
mDisplayOffset = 0;
mCurrentY = 0;
mNextY = 0;
mMaxY = Integer.MAX_VALUE;
if(mScroller== null){
mScroller = new Scroller(getContext());
}
if(mGesture== null){
mGesture = new GestureDetector(getContext(), mOnGesture);
}
}

@Override
public void setOnItemClickListener(AdapterView.OnItemClickListener listener){
mOnItemClicked = listener;
}

private DataSetObserver mDataObserver = new DataSetObserver() {

@SuppressLint("WrongCall") @Override
public void onChanged(){
//log.l("73 onChanged ");
if(mIsSetAD){
mIsSetAD = false;
}else{
synchronized(GridDCView.this){
mDataChanged = true;
}
mTopViewIndex = -1;
mBottomViewIndex = 0;
mDisplayOffset = 0;
mCurrentY = 0;
mNextY = 0;
mMaxY = Integer.MAX_VALUE;
onLayout(false, 0, 0, getWidth(), getHeight());
}

}
@Override
public void onInvalidated() {
}
};

@Override
public ListAdapter getAdapter() {
return mAdapter;
}

@Override
public View getSelectedView() {
return null;
}

@Override
public void setAdapter(ListAdapter adapter) {
if(mAdapter != null) {
mAdapter.unregisterDataSetObserver(mDataObserver);
}
mIsSetAD = true;
mAdapter = adapter;
mAdapter.registerDataSetObserver(mDataObserver);
reset();
}

private synchronized void reset(){
initView();
removeAllViewsInLayout();
requestLayout();
}

@Override
public void setSelection(int position) {
}

private void addAndMeasureChild(final View child, int viewPos) {
LayoutParams params = child.getLayoutParams();
if(params == null) {
params = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
}
addViewInLayout(child, viewPos, params, true);
child.setMinimumWidth(params.width);
child.setMinimumHeight(params.height);
child.measure(MeasureSpec.makeMeasureSpec(getWidth(), MeasureSpec.AT_MOST),
MeasureSpec.makeMeasureSpec(getHeight(), MeasureSpec.AT_MOST));
}

@SuppressLint("DrawAllocation") @Override
protected synchronized void onLayout(boolean changed, int left, int top, int right, int bottom) {
if(mAdapter == null){
return;
}
if(mDataChanged){
removeAllView();
mDataChanged = false;
mScroller.forceFinished(true);
fillListBottom(0,0);
if(getChildCount() > 0){
int tops = 0;
for(int i=0;i<getChildCount();i++){
View child = getChildAt(i);
int childHight = child.getMeasuredHeight();
int position = ((GridDCViewAdapter.ViewHolder)child.getTag()).position;
int linecount = ((GridDCViewAdapter.ViewHolder)child.getTag()).linecount;
if( position !=0 ){
int x = (position-1)*(getWidth()/linecount);
child.layout(x,tops,child.getMeasuredWidth(),tops + childHight);
}else{
int x = (position-1)*(getWidth()/linecount);
child.layout(x,tops,child.getMeasuredWidth(),tops + childHight);
tops += childHight + child.getPaddingBottom();
}
}
}
invalidate();
}else{
if(mScroller.computeScrollOffset()){
int scrolly = mScroller.getCurrY();
mNextY = scrolly;
}
if(mNextY <= 0){
mNextY = 0;
mScroller.forceFinished(true);
}
if(mNextY >= mMaxY) {
mNextY = mMaxY;
mScroller.forceFinished(true);
}

int dy = mCurrentY - mNextY;
removeNonVisibleItems(dy);
fillList(dy);
positionItems(dy);
mCurrentY = mNextY;
if(!mScroller.isFinished()){
post(new Runnable(){
@SuppressLint("WrongCall") @Override
public void run() {
onLayout(false, 0, 0, getWidth(), getHeight());
}
});
}
}
}

private void fillList(final int dx) {
int edge = 0;
View child = getChildAt(getChildCount()-1);
if(child != null) {
edge = child.getBottom();
}
fillListBottom(edge, dx);
edge = 0;
child = getChildAt(0);
if(child != null) {
edge = child.getTop();
}
fillListTop(edge, dx);
}

private void fillListBottom(int bottomEdge, final int dx) {
while(bottomEdge + dx < getHeight() && mBottomViewIndex < mAdapter.getCount()) {
View child = mAdapter.getView(mBottomViewIndex,mRemovedViewQueue.poll(), this);
addAndMeasureChild(child, -1);
int position = ((GridDCViewAdapter.ViewHolder)child.getTag()).position;
if( position == ((GridDCViewAdapter.ViewHolder)child.getTag()).linecount ){
bottomEdge += child.getMeasuredHeight()/*+child.getPaddingTop()+child.getPaddingBottom()*/;
}
if(mBottomViewIndex == mAdapter.getCount()-1) {
mMaxY = mCurrentY + bottomEdge - getHeight();
}
if (mMaxY < 0) {
mMaxY = 0;
}
mBottomViewIndex++;
}
}

private void fillListTop(int topEdge, final int dx) {
while(topEdge + dx > 0 && mTopViewIndex >= 0) {
View child = mAdapter.getView(mTopViewIndex, mRemovedViewQueue.poll(), this);
addAndMeasureChild(child, 0);
int position = ((GridDCViewAdapter.ViewHolder)child.getTag()).position;
if( position == 1 ){
topEdge -= child.getMeasuredHeight();
mDisplayOffset -= child.getMeasuredHeight();
}
mTopViewIndex--;
}
}
/**
* 删除不可见控件
* @param dx
*/
private void removeNonVisibleItems(final int dy) {
View child = getChildAt(0);
while(child != null && child.getBottom() + dy <= 0) {
if(((GridDCViewAdapter.ViewHolder)child.getTag()).position==((GridDCViewAdapter.ViewHolder)child.getTag()).linecount){
mDisplayOffset += child.getMeasuredHeight();
}
mRemovedViewQueue.offer(child);
removeViewInLayout(child);
mTopViewIndex++;
child = getChildAt(0);
}
child = getChildAt(getChildCount()-1);
while(child != null && child.getTop() + dy >= getHeight()) {
mRemovedViewQueue.offer(child);
removeViewInLayout(child);
mBottomViewIndex--;
child = getChildAt(getChildCount()-1);
}
}

private void positionItems(final int dy) {
if(getChildCount() > 0){
mDisplayOffset += dy;
int top = mDisplayOffset;
int left = 0;
for(int i=0;i<getChildCount();i++){
View child = getChildAt(i);
int childHight = child.getMeasuredHeight();
int with = child.getMeasuredWidth();
int position = ((GridDCViewAdapter.ViewHolder)child.getTag()).position;
int linecount = ((GridDCViewAdapter.ViewHolder)child.getTag()).linecount;
left +=child.getPaddingLeft();
if( position != linecount ){
child.layout( left,top,left+with,top + childHight);
left +=(with+child.getPaddingRight());
}else{
child.layout( left,top,left+with,top + childHight);
top += childHight + child.getPaddingBottom();
left = 0;
}
}
}
}

@SuppressLint("WrongCall")
public synchronized void scrollTo(int y) {
mScroller.startScroll(0, mNextY, 0,y - mNextY);
onLayout(false, 0, 0, getWidth(), getHeight());
}

@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
if(ev.getAction() == MotionEvent.ACTION_UP ){
if(!isScroll){
for(int i=0;i<getChildCount();i++){
View child = getChildAt(i);
if (isEventWithinView(ev, child)) {
if(mOnItemClicked != null){
playSV();
mOnItemClicked.onItemClick(GridDCView.this, child, mTopViewIndex + 1 + i, mAdapter.getItemId( mTopViewIndex + 1 + i ));

unpressTouchedChild();

return true;
}
break;
}
}
}
unpressTouchedChild();
}else if(ev.getAction() == MotionEvent.ACTION_DOWN){
for(int i=0;i<getChildCount();i++){
View child = getChildAt(i);
if (isEventWithinView(ev, child)) {
child.setPressed(true);
break;
}
}
}
boolean handled = super.dispatchTouchEvent(ev);
handled |= mGesture.onTouchEvent(ev);
return handled;
}

@SuppressLint("WrongCall")
protected boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
synchronized(GridDCView.this){
mScroller.fling(0,mNextY,0,(int)-velocityY, 0, 0, 0, mMaxY);
}
onLayout(false, 0, 0, getWidth(), getHeight());
return true;
}

protected boolean onDown(MotionEvent e) {
isScroll = false;
mYposition = e.getY();
mBlockTouchAction = !mScroller.isFinished();
mScroller.forceFinished(true);
unpressTouchedChild();
if (!mBlockTouchAction) {
final int index = getChildIndex((int) e.getX(), (int) e.getY());
if (index >= 0) {
mViewBeingTouched = getChildAt(index);
if (mViewBeingTouched != null) {
mViewBeingTouched.setPressed(true);
refreshDrawableState();
}
}
}
return true;
}

private OnGestureListener mOnGesture = new GestureDetector.SimpleOnGestureListener() {
@Override
public boolean onDown(MotionEvent e) {
return GridDCView.this.onDown(e);
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
return GridDCView.this.onFling(e1, e2, velocityX, velocityY);
}
@SuppressLint("WrongCall") @Override
public boolean onScroll(MotionEvent e1, MotionEvent e2,
float distanceX, float distanceY) {
unpressAllChild();
if(Math.abs(e2.getY()-mYposition)>15){
isScroll = true;
}
synchronized(GridDCView.this){
mNextY += (int)distanceY;
}
onLayout(false, 0, 0, getWidth(), getHeight());
return true;
}

@Override
public boolean onSingleTapConfirmed(MotionEvent e) {
unpressTouchedChild();
return true;
}
};

private boolean isEventWithinView(MotionEvent e, View child) {
int x  = (int) e.getX();
int y = (int) e.getY();
child.getHitRect(mRect);
if (mRect.contains(x, y)) {
return true;
}
return false;
}
private int getChildIndex(final int x, final int y) {
int childCount = getChildCount();
for (int index = 0; index < childCount; index++) {
getChildAt(index).getHitRect(mRect);
if (mRect.contains(x, y)) {
return index;
}
}
return -1;
}
private void unpressTouchedChild() {
if (mViewBeingTouched != null) {
mViewBeingTouched.setPressed(false);
refreshDrawableState();
mViewBeingTouched = null;
}
}

private void unpressAllChild(){
for(int i = 0 ; i < getChildCount();i++){
View child =  getChildAt(i);
child.setPressed(false);
}
}
@SuppressLint("WrongCall")
public void toStartPosition(){
mTopViewIndex = -1;
mBottomViewIndex = 0;
mDisplayOffset = 0;
mCurrentY = 0;
mNextY = 0;
mMaxY = Integer.MAX_VALUE;
onLayout(false, 0, 0, getWidth(), getHeight());
}

@SuppressLint("WrongCall")
public void refreshShow(){
synchronized(GridDCView.this){
mDataChanged = true;
}
mTopViewIndex = -1;
mBottomViewIndex = 0;
mDisplayOffset = 0;
mCurrentY = 0;
mNextY = 0;
mMaxY = Integer.MAX_VALUE;
onLayout(false, 0, 0, getWidth(), getHeight());
}

private void removeAllView(){
View child = null;
int count = getChildCount();
for(int i=0;i<count;i++){
child =  getChildAt(i);
mRemovedViewQueue.offer(child);
}
removeAllViewsInLayout();
}

@SuppressLint("WrongCall")
public void pageDown(){
mNextY+=getHeight();
onLayout(false, 0, 0, getWidth(), getHeight());
}
@SuppressLint("WrongCall")
public void pageUp(){
if(mNextY>getHeight()){
mNextY-=getHeight();
}else{
mNextY = 0;
}
onLayout(false, 0, 0, getWidth(), getHeight());
}

public boolean isHaveItemClickListener(){
if( mOnItemClicked == null){
return false;
}
return true;
}

public void clearCacheView(){
mRemovedViewQueue.clear();
}

}

可以根据不同需求，进行修改

与之对应的适配器代码如下

import java.util.TreeMap;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.TextView;

public class GridDCViewAdapter extends SymbolBaseAdapter{
private static final String TAG = "TAG";
private String[]data  = null;
/**
* 键 数据位置， 值 该行数量
*/
private TreeMap< Integer, Integer> lineCountMap = new  TreeMap<>();
/**
*  键 数据位置， 值 在该行位置
*/
private TreeMap< Integer, Integer> columnPositionMap = new  TreeMap<>();
private int mViewWith = 0;
private GridDCView mGDCView = null;
private Context mService = null;
private int mCount = 0;
private int mSymSize = 0;
/**
* @param data 显示数据
* @param context
* @param view 显示控件
* @param service
*/
public GridDCViewAdapter(String[] data, GridDCView view,<span style="font-family: Arial, Helvetica, sans-serif;">Context </span><span style="font-family: Arial, Helvetica, sans-serif;">service) {</span>
super();
this.data = data;
if(data == null){
mCount = 0;
}else{
mCount =  this.data.length;
}
this.mGDCView = view;
mService = service;
}

@Override
public int getCount() {
if(data == null){
return 0;
}
return mCount;
}

@Override
public Object getItem(int position) {
return position;
}

@Override
public long getItemId(int position) {
return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder ;
if(convertView == null){
TextView itemView = new TextView(mService);
itemView.setClickable(false);
convertView = itemView;
viewHolder = new ViewHolder();
convertView.setTag(viewHolder);
convertView.setPadding(1, 2, 1, 2);
((TextView)convertView).setGravity(Gravity.CENTER);
}else{
viewHolder=(ViewHolder)convertView.getTag();
}
if(mViewWith != mGDCView.getWidth()){
mViewWith = mGDCView.getWidth();
}
if(lineCountMap.get(position) == null){
int num = num(position);
for( int i = 0;i < num;i++){
lineCountMap.put(position+i, num);
columnPositionMap.put(position+i, i+1);
}
}
viewHolder.linecount = lineCountMap.get(position);
viewHolder.position = columnPositionMap.get(position);

((TextView)convertView).setText(data[position]);
((TextView)convertView).setLayoutParams(new LayoutParams(mViewWith/viewHolder.linecount-2, mService.mStandHight));
return convertView;
}
/**
* 获取该行显示数量
* @param position
* @return
*/
private int num(int position){
int size = <span style="font-family: Arial, Helvetica, sans-serif;">3</span>;
if(position+1 > mCount){
Log.e(TAG, "数组越界");
return 0;
}
if(data[position].length() < size){//3
if(position+2 > mCount){
return 1;
}
if(data[position+1].length() < size){//3
if(position+3 > mCount||position+4 > mCount){
return 2;
}
if(data[position+2].length() < size&&data[position+3].length() < size/*&&data[startposition+4].length() < 3*/){//3
return 4;
}else{
return 2;
}
}else if(data[position+1].length() >= size+2){
return 1;
}else{
return 2;
}

}else if(data[position].length() >= size &&data[position].length() < size+2){
if(position+2 > mCount){
return 1;
}
if(data[position+1].length() < size+2){
return 2;
}else {
return 1;
}
}else{
return 1;
}
}

public static class ViewHolder {
/**
* 该行显示列数
*/
public int linecount;
/**
* 该控件显示在该行位置
*/
public int position ;
}
/**
* 获取指定位置的数据
* @param position 数据位置
*/
@Override
public String getText( int position){
if(position > mCount-1){
return null;
}
return data[position];
}

public void setData(String[]data){
this.data = data;
lineCountMap.clear();
columnPositionMap.clear();
if(data == null){
mCount = 0;
}else{
mCount = this.data.length;
}
notifyDataSetChanged();
}
}

这里需要计算自己的每行显示多少列，以及该项在该行位置分别设置在hoder中设置给每个itemview,需要修改自己计算行数与列数的算法，以及显示的itemview等

新人，有问题请各位大神在下面指出来，谢谢