简单说明主要处理有滑动事件的监听,不同布局的加载条目间距,及条目动态删减和不同条目间的间距处理,添加了简单的新控件快捷菜单,整体代码挺乱,如果谁有更好的条目删减及滑动事件处理麻烦给份相关链接
效果图
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demo展示.gif
demo展示.gif
开始定义
1.获取图片信息
private void initData() {
mHandler = new Main2Activity.MyHandler(this);
new Thread() {
@Override
public void run() {
List<PhotoBean> list = new ArrayList<PhotoBean>();
List<String> list1 = new ArrayList<String>();
super.run();
Cursor cursor = resolver.query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, null, null, null, MediaStore.Images.Media.DATE_TAKEN + " desc");
if (cursor != null && cursor.moveToFirst()) {
do {
String path = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA));
long date = cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATE_TAKEN));
long id=cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Images.Media._ID));
String name=cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DISPLAY_NAME));
String dec=cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Images.Media.BUCKET_DISPLAY_NAME));
Date date1 = new Date(date);
String Sdate = format.format(date1);
if (!list1.contains(Sdate)) {
list1.add(Sdate);
PhotoBean photoBean1 = new PhotoBean(true,Sdate);
list.add(photoBean1);
Log.d("szjjyh","11111111111=");
}
PhotoBean photoBean = new PhotoBean(path, Sdate,id,dec,name);
Log.d("szjjyh","22222222");
list.add(photoBean);
} while (cursor.moveToNext());
cursor.close();
Message msg = new Message();
msg.what = 1;
Bundle bundle = new Bundle();
ArrayList allList = new ArrayList();
allList.add(list);
allList.add(list1);
bundle.putParcelableArrayList("photos", allList);
msg.setData(bundle);
mHandler.sendMessage(msg);
}
}
}.start();
}
//RecyclerView基本信息
private static class MyHandler extends Handler implements PhotoitemClickListener {
WeakReference<Main2Activity> mWeakReference;
MyHandler(Main2Activity activty) {
mWeakReference = new WeakReference<Main2Activity>(activty);
}
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case 1:
Bundle bundle = msg.getData();
mPhotoFiles = (ArrayList<PhotoBean>) bundle.getParcelableArrayList("photos").get(0);
mAdapter = new PhotoRecViewAdapter(mWeakReference.get(), mPhotoFiles);
GridLayoutManager layoutManager = new GridLayoutManager(mWeakReference.get(), 4);
//加载不同的布局后面
layoutManager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
@Override
public int getSpanSize(int position) {
return mPhotoFiles.get(position).isTitle?4:1;
}
});
mWeakReference.get().mRv.addItemDecoration(new PhotoItemDecoration(layoutManager.getSpanCount(), mWeakReference.get()));
mWeakReference.get().mRv.setLayoutManager(layoutManager);
mWeakReference.get().mRv.setAdapter(mAdapter);
mAdapter.setOnItemClickListener(this);
}
}
@Override
public void onItemClick(View itemView, int position) {
Toast.makeText(mWeakReference.get(),"路径="+mPhotoFiles.get(position).getPath(),Toast.LENGTH_SHORT).show();
}
//图片长按点击事件
@Override
public void onLongItemClick(View itemView, int position) {
mWeakReference.get().mRv.setDragSelectActive(true, position);
mWeakReference.get().mLinview.setVisibility(View.VISIBLE);
}
}
//底部删除取消,及全选按钮点击事件
class onclickListener implements View.OnClickListener {
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.list_space_photo_lin_cancel:
for (int i = 0; i< mPhotoFiles.size(); i++){
if (!mPhotoFiles.get(i).isTitle) {
mPhotoFiles.get(i).mSelected = false;
}
}
mAdapter.setSelected(-1,false);
mAdapter.notifyDataSetChanged();
mLinview.setVisibility(View.GONE);
break;
case R.id.list_space_photo_lin_del:
Iterator<PhotoBean> it = mPhotoFiles.iterator();
while(it.hasNext()){
PhotoBean x = it.next();
if(x.mSelected){
it.remove();
}
}
for (int i = 0; i< mPhotoFiles.size(); i++){
if (i< mPhotoFiles.size()+1) {
if (mPhotoFiles.get(i).isTitle && mPhotoFiles.get(i + 1).isTitle) {
mPhotoFiles.remove(i);
i--;
}
}
if (mPhotoFiles.get(mPhotoFiles.size()-1).isTitle){
mPhotoFiles.remove(mPhotoFiles.size()-1);
i--;
}
}
PhotoNode.getInstance().setArrayList(mPhotoFiles);
mAdapter.setSelected(-1, false);
mAdapter.notifyDataSetChanged();
mLinview.setVisibility(View.GONE);
break;
case R.id.list_space_photo_lin_all:
for (int i = 0; i< mPhotoFiles.size(); i++){
if (!mPhotoFiles.get(i).isTitle) {
mPhotoFiles.get(i).mSelected = true;
}
}
mAdapter.notifyDataSetChanged();
break;
default:
break;
}
}
}
2.对滑动事件处理自定义RecyclerView
package com.qiku.face.external.facelock360.spacephoto;
import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import com.qiku.face.external.facelock360.spacephoto.test2.PhotoRecViewAdapter;
public class PhotoSelectRecyclerView extends RecyclerView {
private float mInitialDownX;
private float mInitialDownY;
public PhotoSelectRecyclerView(Context context) {
super(context);
}
public PhotoSelectRecyclerView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public PhotoSelectRecyclerView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
private int mLastDraggedIndex = -1;
private PhotoRecViewAdapter mAdapter;
private int mInitialSelection;
private boolean mDragSelectActive;
boolean isBeingSlide;
private int mMinReached;
private int mMaxReached;
public void setDragSelectActive(boolean active, int initialSelection) {
if (initialSelection ==-1) {
mAdapter.setSelected(initialSelection, active);
}
mLastDraggedIndex = -1;
mDragSelectActive = active;
isBeingSlide=active;
mInitialSelection = initialSelection;
mLastDraggedIndex = initialSelection;
mMinReached = -1;
mMaxReached = -1;
}
public void setAdapter(PhotoRecViewAdapter adapter) {
super.setAdapter(adapter);
mAdapter = adapter;
}
@Override
public boolean onInterceptTouchEvent(MotionEvent e) {
return super.onInterceptTouchEvent(e);
}
@Override
public boolean dispatchTouchEvent(MotionEvent e) {
if (mDragSelectActive) {
if (e.getAction() == MotionEvent.ACTION_DOWN) {
mInitialDownX = e.getX();
mInitialDownY = e.getY();
}else if (e.getAction() == MotionEvent.ACTION_UP) {
// mDragSelectActive = false;
isBeingSlide =false;
} else if (e.getAction() == MotionEvent.ACTION_MOVE) {
float xDiff = Math.abs(e.getX() - mInitialDownX);
float yDiff = Math.abs(e.getY() - mInitialDownY);
if (yDiff < xDiff && xDiff > 20.0) {
isBeingSlide = true;
}
View v = findChildViewUnder(e.getX(), e.getY());
if (isBeingSlide) {
if (getPos(v) != -1) {
Log.d("adsds", " getId=" + v.getTag());
if (v != null && mLastDraggedIndex != getPos(v)) {
mLastDraggedIndex = getPos(v);
if (mMinReached == -1) mMinReached = mLastDraggedIndex;
if (mMaxReached == -1) mMaxReached = mLastDraggedIndex;
if (mLastDraggedIndex > mMaxReached)
mMaxReached = mLastDraggedIndex;
if (mLastDraggedIndex < mMinReached)
mMinReached = mLastDraggedIndex;
if (mAdapter != null)
mAdapter.selectRange(mInitialSelection, mLastDraggedIndex, mMinReached, mMaxReached);
if (mInitialSelection == mLastDraggedIndex) {
mMinReached = mLastDraggedIndex;
mMaxReached = mLastDraggedIndex;
Log.d("ddd", "onClick 3=" + getPos(v));
}
Log.d("ddd", "onClick 2=" + getPos(v));
}
return true;
}
}else {
return super.dispatchTouchEvent(e);
}
}
}
return super.dispatchTouchEvent(e);
}
private int getPos(View parentView) {
int pos = -1;
Object tag = null;
try {
tag = parentView.getTag();
}catch (Exception e){
}
if (tag != null)
pos = (int) tag;
return pos;
}
}
3.对RecyclerView.Adapter的处理
package com.qiku.face.external.facelock360.spacephoto.test2;
import android.content.Context;
import android.provider.MediaStore;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import com.bumptech.glide.Glide;
import com.qiku.face.external.facelock360.spacephoto.PhotoBean;
import com.qiku.face.external.facelock360.spacephoto.R;
import com.qiku.face.external.facelock360.spacephoto.Util;
import java.io.File;
import java.util.List;
/**
* Created by chenmingying on 2017/9/19.
*/
public class PhotoRecViewAdapter extends RecyclerView.Adapter<PhotoRecViewAdapter.MyViewHolder> {
private final String TAG = "PhotoRecViewAdapter";
private final LayoutInflater mLayoutInflater;
private Context mContext;
private List<PhotoBean> mList;
private int fixedSize;
private int mWidth;
private boolean isBoxVisibility = false;
private boolean isImageUpdate = true;
protected PhotoitemClickListener mOnItemClickListener;
private static final int VIEW_TYPE_TITLE = R.layout.list_space_photo_rv_title;
private static final int VIEW_TYPE_ITEM = R.layout.list_space_photo_rv_item;
public PhotoRecViewAdapter(Context context, List<PhotoBean> list) {
this.mContext = context;
this.mList = list;
mLayoutInflater = LayoutInflater.from(context);
PhotoNode.getInstance().setArrayList(list);
DisplayMetrics metric = new DisplayMetrics();
WindowManager manager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
manager.getDefaultDisplay().getMetrics(metric);
// 屏幕宽度（像素）
mWidth = metric.widthPixels;
Log.d(TAG, "setLayoutParams=1 " + mWidth + " =" + Util.dip2px(context, 0.5f));
fixedSize = (mWidth - 3 * Util.dip2px(mContext, 1.0f)) / 4;
}
public void setOnItemClickListener(PhotoitemClickListener listener) {
this.mOnItemClickListener = listener;
}
public class MyViewHolder extends RecyclerView.ViewHolder {
private ImageView imageView;
protected CheckBox checkBox;
protected TextView mTextView;
int viewType;
public MyViewHolder(View itemView, int viewType) {
super(itemView);
this.viewType =viewType;
if (viewType==VIEW_TYPE_ITEM) {
imageView = (ImageView) itemView.findViewById(R.id.list_space_photo_img);
checkBox = (CheckBox) itemView.findViewById(R.id.list_space_photo_che);
imageView.setLayoutParams(new RelativeLayout.LayoutParams(getImageSize(getItemCount()),
getImageSize(getItemCount())));
}
if (viewType==VIEW_TYPE_TITLE) {
mTextView = (TextView) itemView.findViewById(R.id.list_photo_time);
}
}
private int getImageSize(int position) {
int tmpSize = 0;
if ((position + 1) % 4 == 0) {
tmpSize = mWidth - 3 * Util.dip2px(mContext, 1.0f) - 3 * fixedSize;
} else {
tmpSize = fixedSize;
}
return tmpSize + Util.dip2px(mContext, 1.0f);
}
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
return new MyViewHolder(mLayoutInflater.inflate(viewType, parent, false),viewType);
}
@Override
public void onBindViewHolder(@NonNull final MyViewHolder holder, final int position) {
Log.d(TAG, "onBindViewHolder: position=" + position);
if (holder.viewType==VIEW_TYPE_TITLE) {
holder.mTextView.setText(mList.get(position).getDate());
}
if (holder.viewType==VIEW_TYPE_ITEM) {
Glide.with(mContext).load(mList.get(position).getPath()).into(holder.imageView);
//holder.imageView.setImageBitmap(MediaStore.Images.Media.);
if (isBoxVisibility) {
holder.checkBox.setVisibility(View.VISIBLE);
} else {
holder.checkBox.setVisibility(View.GONE);
mList.get(position).mSelected = false;
Log.d(TAG, "onBindViewHolder: mList.set(" + position + ").mSelected");
}
holder.checkBox.setChecked(mList.get(position).mSelected);
Log.d(TAG, "onBindViewHolder: mList.get(" + position + ")=" + mList.get(position).mSelected);
if (holder.checkBox.isChecked()) {
holder.imageView.setAlpha(0.8f);
} else {
holder.imageView.setAlpha(1.0f);
}
holder.itemView.setTag(position);
holder.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
Log.d(TAG, "onCheckedChanged: mList.set1(" + holder.getAdapterPosition() + ")" + b);
mList.get(holder.getAdapterPosition()).mSelected = b;
if (b) {
holder.imageView.setAlpha(0.8f);
} else {
holder.imageView.setAlpha(1.0f);
}
}
});
holder.imageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Log.d(TAG, "onClick: " + position);
mOnItemClickListener.onItemClick(view, position);
if (!isBoxVisibility) {
// mFileManager.openFile(mContext, mList.get(position).mPath);
} else {
if (holder.checkBox.isChecked()) {
mList.get(position/*holder.getAdapterPosition()*/).mSelected = false;
} else {
mList.get(position/*holder.getAdapterPosition()*/).mSelected = true;
}
notifyItemChanged(position);
}
}
});
holder.imageView.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View view) {
Log.d(TAG, "onLongClick: " + position);
if (mOnItemClickListener != null) {
mOnItemClickListener.onLongItemClick(view, position/*holder.getAdapterPosition()*/);
}
//
if (!isBoxVisibility) {
mList.get(position/*holder.getAdapterPosition()*/).mSelected = true;
// Toast.makeText(mContext,"="+position+ " Tag="+position,Toast.LENGTH_SHORT).show();
// notifyItemChanged();
// holder.checkBox.setVisibility(View.VISIBLE);
// holder.checkBox.setChecked(true);
isBoxVisibility = true;
// isImageUpdate =false;
notifyDataSetChanged();
}
return false;
}
});
}
}
@Override
public int getItemCount() {
return mList == null ? 0 : mList.size();
}
public void setSelected(int initialSelection, boolean b) {
isBoxVisibility = b;
//notifyDataSetChanged();
}
int aSelection = -1;
public void selectRange(int initialSelection, int lastDraggedIndex, int minReached, int maxReached) {
//if ()
Log.d(TAG, "initialSelection=" + initialSelection + " lastDraggedIndex=" + lastDraggedIndex +
" minReached=" + minReached + " maxReached=" + maxReached);
if (aSelection != lastDraggedIndex) {
mList.get(lastDraggedIndex).mSelected = !mList.get(lastDraggedIndex).mSelected;
notifyItemChanged(lastDraggedIndex);
aSelection = lastDraggedIndex;
}
}
public void remove(int position) {
new File(mList.get(position).getPath()).delete();
mList.remove(position);
notifyItemRemoved(position);
}
//获取不同布局的对象
@Override
public int getItemViewType(int position) {
if (mList.get(position).isTitle)
return VIEW_TYPE_TITLE;
else return VIEW_TYPE_ITEM;
}
}
4.对分割线的处理
package com.qiku.face.external.facelock360.spacephoto.test2;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import com.qiku.face.external.facelock360.spacephoto.PhotoBean;
import com.qiku.face.external.facelock360.spacephoto.R;
import java.util.ArrayList;
import java.util.List;
public class PhotoItemDecoration extends RecyclerView.ItemDecoration {
private int spanCount;
private Context mContext;
private List<PhotoBean> mDataArrayList;
private List<Integer> mNum = new ArrayList<>();
public PhotoItemDecoration(int spanCount, Context mContext) {
this.spanCount =spanCount;
this.mContext = mContext;
}
@Override
public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
mDataArrayList = PhotoNode.getInstance().getArrayList();
if (mDataArrayList != null) {
mNum.clear();
for (int i = 0; i < mDataArrayList.size(); i++) {
if (mDataArrayList.get(i).isTitle) {
mNum.add(i);
}
}
}
int childLayoutPosition = parent.getChildLayoutPosition(view);
int n = -2;
if (mNum != null) {
for (int i = 0; i < mNum.size()-1; i++) {
if (mNum.get(i) < childLayoutPosition && childLayoutPosition < mNum.get(i + 1)) {
n = childLayoutPosition - mNum.get(i)-1;
}
if (childLayoutPosition>mNum.get(mNum.size()-1)){
n = childLayoutPosition - mNum.get(i + 1)-1;
}
if (childLayoutPosition == mNum.get(i)){
outRect.left = 0;
}
}
}
if ((n+1) %spanCount==0) {
outRect.right = 0;
}else {
outRect.right = mContext.getResources().getDimensionPixelSize(R.dimen.image_interval);
}
}
@Override
public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) {
super.onDraw(c, parent, state);
}
}
差不多了
