PhotoPicker.builder()        .setPhotoCount(maxPhoto) //設(shè)置最多選擇的圖片數(shù)量        .setShowCamera(true)  //是否顯示相機按鈕        .setSelected(photos)  //設(shè)置已經(jīng)選好的圖片        .start(SendDynamicActivity.this); //上下文參數(shù) 需要傳activity

PhotoPreview.builder()        .setPhotos(photos) //設(shè)置選擇好的圖片        .setCurrentItem(position) //設(shè)置當(dāng)前選擇的條目        .setShowDeleteButton(true) //是否顯示刪除按鈕        .start(this);

package com.zlc.friendcirclephoto.ui;import android/197225.html">android.Manifest;import android.content.Intent;import android.os.Bundle;import android.support.v7.widget.RecyclerView;import android.support.v7.widget.StaggeredGridLayoutManager;import android.support.v7.widget.helper.ItemTouchHelper;import android.text.InputFilter;import android.view.View;import android.widget.ImageView;import android.widget.TextView;import com.mylhyl.acp.Acp;import com.mylhyl.acp.AcpListener;import com.mylhyl.acp.AcpOptions;import com.zlc.friendcirclephoto.adapter.MyItemTouchHelperCallback;import com.zlc.friendcirclephoto.adapter.SendImageAdapter;import com.zlc.friendcirclephoto.view.CommonEditText;import com.zlc.friendcirclephoto.R;import com.zlc.friendcirclephoto.utils.LogUtil;import java.util.ArrayList;import java.util.Collections;import java.util.List;import me.iwf.photopicker.PhotoPicker;import me.iwf.photopicker.PhotoPreview;/** * Created by zlc * 發(fā)布朋友圈 */public class SendDynamicActivity extends BaseActivity implements View.OnClickListener,SendImageAdapter.OnClickListener{  private ImageView im_fanhui;  private TextView tv_title;  private CommonEditText id_et_content;  private TextView id_tv_num;  private TextView id_tv_max_num;  private SendImageAdapter mPhotoAdapter;  public static final int maxPhoto = 9; //最大選擇幾張照片  private List<Object> images = new ArrayList<>();  private ArrayList<String> photos = new ArrayList<>();  private RecyclerView mRecycleView;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_send_note);    initView();    initData();    initListener();  }  private void initView() {    im_fanhui = findView(R.id.id_iv_back);    tv_title = findView(R.id.id_tv_title);    tv_title.setText("發(fā)布");    id_et_content = findView(R.id.id_common_et);    mRecycleView = findView(R.id.id_recycleview);    id_tv_num = findView(R.id.tv_num);    id_tv_max_num = findView(R.id.id_tv_max_num);    id_et_content.setHint("這一刻的想法......");    id_tv_num.setText("0");    id_tv_max_num.setText("/188");    id_et_content.setFilters(new InputFilter[]{new InputFilter.LengthFilter(188)});  }  private void initData() {    images.add(1);    mRecycleView.setLayoutManager(new StaggeredGridLayoutManager(3,StaggeredGridLayoutManager.VERTICAL));    mPhotoAdapter = new SendImageAdapter(SendDynamicActivity.this, images);    mRecycleView.setAdapter(mPhotoAdapter);    mPhotoAdapter.setOnClickListener(this);    MyItemTouchHelperCallback callBack = new MyItemTouchHelperCallback(mPhotoAdapter);    //實現(xiàn)拖拽排序    final ItemTouchHelper touchHelper = new ItemTouchHelper(callBack);    //調(diào)用ItemTouchHelper的attachToRecyclerView方法建立聯(lián)系    touchHelper.attachToRecyclerView(mRecycleView);  }  private void initListener() {    im_fanhui.setOnClickListener(this);    id_et_content.setOnTextChaged(new CommonEditText.OnTextChaged() {      @Override      public void setText(String s) {        id_tv_num.setText(s.length()+"");      }    });  }  @Override  public void onClick(View v) {    switch (v.getId()){      case R.id.id_iv_back:        finish();        break;    }  }  @Override  protected void onActivityResult(int requestCode, int resultCode, Intent data) {    super.onActivityResult(requestCode, resultCode, data);    if (resultCode == RESULT_OK && (requestCode == PhotoPicker.REQUEST_CODE || requestCode == PhotoPreview.REQUEST_CODE)) {      List<String> photos = null;      if (data != null) {        photos = data.getStringArrayListExtra(PhotoPicker.KEY_SELECTED_PHOTOS);      }      if (photos != null) {        clearPhotoS(photos.size());        images.addAll(images.size()-1,photos);        mPhotoAdapter.notifyDataSetChanged();      }    }  }  @Override  public void onClick(View v, int position) {    switch (v.getId()){      case R.id.iv_add:        selectPhoto();        break;      case R.id.im_delete:        delImages(position);        break;      case R.id.iv_img:        lookPhoto(position);        break;    }  }  public void delImages(int position){    images.remove(position);    if(mPhotoAdapter!=null)      mPhotoAdapter.notifyItemRemoved(position);  }  public void clearPhotoS(int size){    LogUtil.e("返回有幾張照片",size+"");    images.clear();    images.add(1);  }  //選擇圖片  private void selectPhoto() {    List<Object> images = mPhotoAdapter.getDatas();    photos.clear();    for (int i = 0;i< images.size()-1;i++ ){      photos.add(images.get(i).toString());    }    //權(quán)限    Acp.getInstance(this).request(new AcpOptions.Builder()            .setPermissions(                Manifest.permission.WRITE_EXTERNAL_STORAGE,                Manifest.permission.CAMERA,                Manifest.permission.READ_EXTERNAL_STORAGE            )            .build(),        new AcpListener() {          @Override          public void onGranted() {            LogUtil.e("msg", "權(quán)限外全部通過");            PhotoPicker.builder()                .setPhotoCount(maxPhoto)                .setShowCamera(true)                .setSelected(photos)                .start(SendDynamicActivity.this);          }          @Override          public void onDenied(List<String> permissions) {            LogUtil.e(permissions.toString() ,"權(quán)限拒絕");          }        });  }  //查看圖片  private void lookPhoto(int position){    photos.clear();    List<Object> images = mPhotoAdapter.getDatas();    for (int i = 0;i< images.size()-1;i++ ){      photos.add(images.get(i).toString());    }    PhotoPreview.builder()        .setPhotos(photos)        .setCurrentItem(position)        .setShowDeleteButton(true) //是否顯示刪除按鈕        .start(this);  }}

public class SendImageAdapter extends RecyclerView.Adapter<SendImageAdapter.ViewHolder> implements ItemTouchHelperAdapter{  private Activity mContext;  private List<Object> mDatas;  private LayoutInflater mLayoutInflater;  public SendImageAdapter(Activity context,List<Object> datas){    this.mContext = context;    this.mDatas = datas;    mLayoutInflater = LayoutInflater.from(context);  }  @Override  public SendImageAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {    View view = mLayoutInflater.inflate(R.layout.send_grid_item,parent,false);    return new ViewHolder(view);  }  @Override  public void onBindViewHolder(final SendImageAdapter.ViewHolder viewHolder, final int position) {    Object image = mDatas.get(position);    LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) viewHolder.id_rl_img.getLayoutParams();    int w = params.width = (int) ((ScreenUtil.getScreenWidth(mContext) - DensityUtil.dp2px(mContext,38)) / 3.0);    params.height = w;    params.bottomMargin = DensityUtil.dp2px(mContext,7);    params.rightMargin = DensityUtil.dp2px(mContext,7);    viewHolder.id_rl_img.setLayoutParams(params);    if (image instanceof String) {      viewHolder.im_delete.setVisibility(View.VISIBLE);      viewHolder.iv_add.setVisibility(View.GONE);      viewHolder.im_img.setVisibility(View.VISIBLE);      //這里最好使用glide Picasso加載本地圖片 bitmap容易造成內(nèi)存溢出      Bitmap bitmap = BitmapFactory.decodeFile(image.toString());      viewHolder.im_img.setImageBitmap(bitmap);      LogUtil.e("手機照片", image.toString());    } else {      viewHolder.im_delete.setVisibility(View.INVISIBLE);      viewHolder.iv_add.setVisibility(View.VISIBLE);      viewHolder.im_img.setVisibility(View.GONE);      viewHolder.iv_add.setImageResource(R.drawable.tupiantianjia2x);      LogUtil.e("添加照片", ""+image);    }    viewHolder.iv_add.setOnClickListener(new MyClickListener(viewHolder));    viewHolder.im_img.setOnClickListener(new MyClickListener(viewHolder));    viewHolder.im_delete.setOnClickListener(new MyClickListener(viewHolder));  }  @Override  public int getItemCount() {    if(mDatas == null){      return 0;    }    return mDatas.size() >= 9 ? 9 : mDatas.size();  }  public List<Object> getDatas() {    return mDatas;  }  public static class ViewHolder extends RecyclerView.ViewHolder{    private final ImageView im_img;    private final ImageView iv_add;    private final ImageView im_delete;    private final FrameLayout id_rl_img;    public ViewHolder(View itemView) {      super(itemView);      im_img = (ImageView) itemView.findViewById(R.id.iv_img);      iv_add = (ImageView) itemView.findViewById(R.id.iv_add);      im_delete = (ImageView) itemView.findViewById(R.id.im_delete);      id_rl_img = (FrameLayout) itemView.findViewById(R.id.id_rl_img);    }  }  //拖拽排序相關(guān)  @Override  public void onItemMove(int fromPos, int toPos) {    if(fromPos == mDatas.size()-1 || toPos == mDatas.size()-1 )      return;    Collections.swap(mDatas,fromPos,toPos);    notifyItemMoved(fromPos,toPos);  }  //滑動刪除相關(guān)  @Override  public void onItemDel(int pos) {    if(pos == mDatas.size() - 1)      return;    mDatas.remove(pos);    notifyItemRemoved(pos);  }  public interface OnClickListener{    void onClick(View v, int position);  }  private static OnClickListener onClickListener;  public void setOnClickListener(OnClickListener onClickListener) {    this.onClickListener = onClickListener;  }  public static class MyClickListener implements View.OnClickListener{    private ViewHolder mHolder;    public MyClickListener(ViewHolder holder ){      this.mHolder = holder;    }    @Override    public void onClick(View view) {      switch (view.getId()){        case R.id.iv_add:        case R.id.im_delete:        case R.id.iv_img:          if(onClickListener!=null) {            int pos = mHolder.getAdapterPosition();            onClickListener.onClick(view, pos);          }          break;      }    }  }}

 MyItemTouchHelperCallback callBack = new  MyItemTouchHelperCallback(mPhotoAdapter);  //實現(xiàn)拖拽排序  final ItemTouchHelper touchHelper = new ItemTouchHelper(callBack);  //調(diào)用ItemTouchHelper的attachToRecyclerView方法建立聯(lián)系  touchHelper.attachToRecyclerView(mRecycleView);

package com.zlc.friendcirclephoto.adapter;import android.graphics.Canvas;import android.support.v7.widget.GridLayoutManager;import android.support.v7.widget.LinearLayoutManager;import android.support.v7.widget.RecyclerView;import android.support.v7.widget.StaggeredGridLayoutManager;import android.support.v7.widget.helper.ItemTouchHelper;public class MyItemTouchHelperCallback extends ItemTouchHelper.Callback {  private SendImageAdapter mAdapter; //適配器傳過來  private boolean isLongDrag = true;  private boolean isMoveSwipe = true;  public MyItemTouchHelperCallback(SendImageAdapter adapter){    this.mAdapter = adapter;  }  @Override  public int getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {    RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();    int dragFlags = 0; //拖拽的標(biāo)志    int swipeFlags = 0; //刪除的標(biāo)志    int position = viewHolder.getAdapterPosition();    if(position == mAdapter.getDatas().size() - 1){ // 如果是最后一個條目 則既不能拖拽也不能刪除      dragFlags = 0;      swipeFlags = 0;    } else if(layoutManager instanceof GridLayoutManager || layoutManager instanceof StaggeredGridLayoutManager){//網(wǎng)格布局 則支持上下左右拖拽 不支持刪除      dragFlags = ItemTouchHelper.UP | ItemTouchHelper.DOWN | ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT; //允許上下左右的拖動      swipeFlags = 0; //不能刪除    }else if(layoutManager instanceof LinearLayoutManager){ //線性布局分為垂直和水平      LinearLayoutManager manager = (LinearLayoutManager) layoutManager;      int orientation = manager.getOrientation();      if(orientation == LinearLayoutManager.HORIZONTAL){ //橫向listview列表         dragFlags = ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT; //允許左右的拖動        swipeFlags = ItemTouchHelper.DOWN; //只允許從上向下側(cè)滑      }else if(orientation == LinearLayoutManager.VERTICAL){ //豎向listview列表        dragFlags = ItemTouchHelper.UP | ItemTouchHelper.DOWN; //允許上下的拖動        swipeFlags = ItemTouchHelper.LEFT; //只允許從右向左側(cè)滑刪除      }    }else{  //最后一個條目既不能拖拽也不能刪除 相當(dāng)于更多      dragFlags = 0;      swipeFlags = 0;    }    return makeMovementFlags(dragFlags,swipeFlags);  }  @Override  public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {    mAdapter.onItemMove(viewHolder.getAdapterPosition(),target.getAdapterPosition());    return true;  }  @Override  public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {    mAdapter.onItemDel(viewHolder.getAdapterPosition());  }  // 該方法返回true時，表示支持長按拖動  @Override  public boolean isLongPressDragEnabled() {    return isLongDrag;  }  //該方法返回true時，表示支持滑動刪除  @Override  public boolean isItemViewSwipeEnabled() {    return isMoveSwipe;  }  //從靜止?fàn)顟B(tài)變?yōu)橥献Щ蛘呋瑒拥臅r候會回調(diào)該方法，參數(shù)actionState表示當(dāng)前的狀態(tài)。 開始拖拽的時候給item添加一個背景色，然后在拖拽完成的時候還原  @Override  public void onSelectedChanged(RecyclerView.ViewHolder viewHolder, int actionState) {    //拖拽的時候才設(shè)置背景顏色//    if (actionState != ItemTouchHelper.ACTION_STATE_IDLE && actionState != ItemTouchHelper.ACTION_STATE_SWIPE) {//      viewHolder.itemView.setBackgroundColor(Color.LTGRAY);//    }    super.onSelectedChanged(viewHolder, actionState);  }  //當(dāng)用戶操作完畢某個item并且其動畫也結(jié)束后會調(diào)用該方法  @Override  public void clearView(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {    //重置改變，防止由于復(fù)用而導(dǎo)致的顯示問題    super.clearView(recyclerView, viewHolder);    viewHolder.itemView.setBackgroundColor(0);  }  //我們可以在這個方法內(nèi)實現(xiàn)我們自定義的交互規(guī)則或者自定義的動畫效果  @Override  public void onChildDraw(Canvas c, RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {    super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);  }  public void setLongDrag(boolean longDrag) {    isLongDrag = longDrag;  }  public void setMoveSwipe(boolean moveSwipe) {    isMoveSwipe = moveSwipe;  }}

 //拖拽排序相關(guān)  @Override  public void onItemMove(int fromPos, int toPos) {    if(fromPos == mDatas.size()-1 || toPos == mDatas.size()-1 )      return;    Collections.swap(mDatas,fromPos,toPos);    notifyItemMoved(fromPos,toPos);  }  //滑動刪除相關(guān)  @Override  public void onItemDel(int pos) {    if(pos == mDatas.size() - 1)      return;    mDatas.remove(pos);    notifyItemRemoved(pos);}