Android 仿微信发动态九宫格拖拽、删除功能

1、完美1比1 仿照微信仿微信发动态 九宫格拖拽、删除

暴力拖拽ui有点问题，不影响使用，资源文件自己找个+号

2、微信发动态拖拽bug

当选择完图片，长按图片拖拽过程中按下屏幕home键盘，再次进入这时候就不能点击输入文字，点击输入文字的时候会触发选择相册事件

3、拖拽事件用的basequickadapter

implementation 'com.android.support:recyclerview-v7:28.0.0'
implementation "com.github.CymChad:BaseRecyclerViewAdapterHelper:2.9.50"
implementation "com.github.bumptech.glide:glide:4.9.0"

4、演示

5、快速入手

activity
NineGridChooseImage nineGridChooseImage = findViewById(R.id.nineGridChooseImage);
FrameLayout frameLayout= findViewById(R.id.frameLayout);
nineGridChooseImage.init(frameLayout);

int statusBarHeight = 0;
int resourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
if (resourceId > 0) {
 statusBarHeight = getResources().getDimensionPixelSize(resourceId);
}
nineGridChooseImage.setFixH(statusBarHeight);//自己对一下高度
nineGridChooseImage.setAddClick(new NineGridChooseImage.AddClick() {
 @Override
 public void onAdd() {
 /* List<String> list = new LinkedList<>();
 for(int i = 0;i<5;i++){
  list.add("https://xx.jpg");
 }*/
 nineGridChooseImage.addData("https://xxx.jpg");
 }
});

xml

<?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-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/frameLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Main11Activity">
<com.example.hotfix_01.view.NineGridChooseImage
android:background="#A8A1A1"
android:layout_marginTop="100dp"
android:id="@+id/nineGridChooseImage"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</FrameLayout>

5、实现过程

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NineGridChooseImage.java
package com.example.hotfix_01.view;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.ObjectAnimator;
import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Point;
import android.graphics.Rect;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.helper.ItemTouchHelper;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Display;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.bumptech.glide.Glide;
import com.chad.library.adapter.base.BaseItemDraggableAdapter;
import com.chad.library.adapter.base.BaseViewHolder;
import com.chad.library.adapter.base.callback.ItemDragAndSwipeCallback;
import com.chad.library.adapter.base.listener.OnItemDragListener;
import java.util.LinkedList;
import java.util.List;
import top.antaikeji.base.R;
import top.antaikeji.foundation.utils.DisplayUtil;
import static android.support.v7.widget.helper.ItemTouchHelper.ACTION_STATE_IDLE;
/**
* Author: flyzhang
*/
public class NineGridChooseImage extends RecyclerView {
private Rect lastRect = new Rect();
private Rect rect = new Rect();
private boolean isDel = false, tempImageDel = false;
private int mSelectPosition = 0;
private int SCREEN_W, SCREEN_H;
private int mImageWH;
private int mImageCount = 4;
private DraggableAdapter mDraggableAdapter;
private LinearLayout mBottomView;
private FrameLayout mFrameLayout;
private AddClick mAddClick;
private DragCallBack mDragCallBack;
private ImageView mTempImage;
;
private int mFixH = 0;
private int bottomViewH = 55;
private ImageView trash;
private int margin = 2;
public NineGridChooseImage(@NonNull Context context) {
super(context);
}
public NineGridChooseImage(@NonNull Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
}
public void init(FrameLayout f) {
this.mFrameLayout = f;
Display defaultDisplay = ((Activity) getContext()).getWindowManager().getDefaultDisplay();
Point point = new Point();
defaultDisplay.getSize(point);
SCREEN_H = point.y;
SCREEN_W = point.x;
mImageWH = SCREEN_W / 3 - 2 * DisplayUtil.dpToPx(5) - 4 * DisplayUtil.pxToDp(20) - DisplayUtil.pxToDp(50);
bottomViewH = DisplayUtil.dpToPx(bottomViewH);
margin = DisplayUtil.dpToPx(margin);
mTempImage = new ImageView(getContext());
mTempImage.setScaleType(ImageView.ScaleType.FIT_XY);
//初始化底部view
mBottomView = new LinearLayout(getContext());
mBottomView.setGravity(Gravity.CENTER);
mBottomView.setBackgroundColor(Color.RED);
FrameLayout.LayoutParams bottomLayoutParams = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, bottomViewH);
bottomLayoutParams.gravity = Gravity.BOTTOM;
trash = new ImageView(getContext());
int wh = DisplayUtil.dpToPx(25);
FrameLayout.LayoutParams trashParams = new FrameLayout.LayoutParams(wh, wh);
trash.setLayoutParams(trashParams);
mBottomView.addView(trash);
TextView tipTextView = new TextView(getContext());
tipTextView.setTextColor(Color.WHITE);
tipTextView.setText("拖拽此处删除");
mBottomView.addView(tipTextView);
mBottomView.setOrientation(LinearLayout.VERTICAL);
mBottomView.setLayoutParams(bottomLayoutParams);
mBottomView.setVisibility(GONE);
out();
mFrameLayout.addView(mBottomView);
GridLayoutManager gridLayoutManager = new GridLayoutManager(getContext(), 3);
setLayoutManager(gridLayoutManager);
List<String> data = new LinkedList<>();
data.add("");
mDraggableAdapter = new DraggableAdapter(data);
DragAndSwipeCallback mItemDragAndSwipeCallback = new DragAndSwipeCallback(mDraggableAdapter);
ItemTouchHelper itemTouchHelper = new ItemTouchHelper(mItemDragAndSwipeCallback);
itemTouchHelper.attachToRecyclerView(this);
mDraggableAdapter.enableDragItem(itemTouchHelper, R.id.image, true);
mItemDragAndSwipeCallback.setSwipeMoveFlags(ItemTouchHelper.START | ItemTouchHelper.END);
mDraggableAdapter.setOnItemDragListener(new OnItemDragListener() {
 @Override
 public void onItemDragStart(RecyclerView.ViewHolder viewHolder, int pos) {
 if(null!=mDragCallBack){
  mDragCallBack.onStart();
 }
 mSelectPosition = pos;
 mFrameLayout.removeView(mTempImage);
 tempImageDel = false;
 isDel = false;
 in();
 ImageView imageView = viewHolder.itemView.findViewById(R.id.image);
 mTempImage.setImageDrawable(imageView.getDrawable());
 ViewGroup.LayoutParams l = new ViewGroup.LayoutParams(imageView.getWidth(), imageView.getHeight());
 mTempImage.setLayoutParams(l);
 imageView.getGlobalVisibleRect(lastRect);
 mTempImage.setX(lastRect.left);
 mTempImage.setY(lastRect.top - mFixH);
 mTempImage.setScaleX(1.2f);
 mTempImage.setScaleY(1.2f);
 mFrameLayout.addView(mTempImage);
 imageView.setAlpha(0f);
 }
 @Override
 public void onItemDragMoving(RecyclerView.ViewHolder source, int from, RecyclerView.ViewHolder target, int to) {
 target.itemView.findViewById(R.id.image).getGlobalVisibleRect(lastRect);
 mSelectPosition = to;
 }
 @Override
 public void onItemDragEnd(RecyclerView.ViewHolder viewHolder, int pos) {
 if(null!=mDragCallBack){
  mDragCallBack.onEnd();
 }
 ImageView imageView = viewHolder.itemView.findViewById(R.id.image);
 imageView.setScaleX(1f);
 imageView.setScaleY(1f);
 if (tempImageDel) {
  mDraggableAdapter.remove(mSelectPosition);
 } else {
  imageView.setAlpha(1f);
  mFrameLayout.removeView(mTempImage);
 }
 out();
 }
});
setAdapter(mDraggableAdapter);
}
public void setFixH(int mFixH) {
this.mFixH = mFixH;
}
/**
* 拖住adapter
*/
private class DraggableAdapter extends BaseItemDraggableAdapter<String, BaseViewHolder> {
private DraggableAdapter(List<String> data) {
 super(R.layout.base_iamge_item, data);
}
@Override
protected void convert(@NonNull BaseViewHolder helper, String item) {
 ImageView imageView = helper.getView(R.id.image);//图片
 LinearLayout.LayoutParams l = (LinearLayout.LayoutParams) imageView.getLayoutParams();
 l.height = mImageWH;
 l.width = mImageWH;
 l.rightMargin = margin;
 l.bottomMargin = margin;
 l.topMargin = margin;
 imageView.setLayoutParams(l);
 ImageView imageView2 = helper.getView(R.id.image2);//加号
 LinearLayout.LayoutParams l2 = (LinearLayout.LayoutParams) imageView.getLayoutParams();
 l2.height = mImageWH;
 l2.width = mImageWH;
 l2.rightMargin = margin;
 l2.bottomMargin = margin;
 l2.topMargin = margin;
 imageView2.setLayoutParams(l2);
 /**
 * 如果list的长度等于mImageCount 最后一张最后一张显示正常图片
 *
 */
 if(TextUtils.isEmpty(item)){
 if(mImageCount <= helper.getAdapterPosition()){
  imageView.setVisibility(View.GONE);
  imageView2.setVisibility(View.GONE);
 }else{
  imageView.setVisibility(View.GONE);
  imageView2.setVisibility(View.VISIBLE);
  imageView2.setOnClickListener(new OnClickListener() {
  @Override
  public void onClick(View v) {
   if (null != mAddClick) {
   mAddClick.onAdd();
   }
  }
  });
 }
 }else{
 imageView.setVisibility(View.VISIBLE);
 imageView2.setVisibility(View.GONE);
 Glide.with(mContext).load(item).into(imageView);
 }
 imageView.setAlpha(1f);
}
}
/**
* 拖拽监听
*/
private class DragAndSwipeCallback extends ItemDragAndSwipeCallback {
private DragAndSwipeCallback(BaseItemDraggableAdapter adapter) {
 super(adapter);
}
@Override
public boolean canDropOver(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder current, @NonNull RecyclerView.ViewHolder target) {
 if (target.getAdapterPosition() == mDraggableAdapter.getData().size() - 1 || current.getAdapterPosition() == mDraggableAdapter.getData().size() - 1) {
 return false;
 }
 return super.canDropOver(recyclerView, current, target);
}
@Override
public void onSelectedChanged(RecyclerView.ViewHolder viewHolder, int actionState) {
 super.onSelectedChanged(viewHolder, actionState);
 if (actionState == ACTION_STATE_IDLE) {
 //空闲状态
 if (isDel) {
  isDel = false;
  tempImageDel = true;
  mFrameLayout.removeView(mTempImage);
 }
 }
}
@Override
public void onChildDrawOver(@NonNull Canvas c, @NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {
 super.onChildDrawOver(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
 if (tempImageDel) {
 return;
 }
 ImageView tempImageView = viewHolder.itemView.findViewById(R.id.image);
 boolean b = tempImageView.getGlobalVisibleRect(rect);
 Log.e("TAG", "dX:" + dX);
 Log.e("TAG", "dY:" + dY);
 if (b && dX > 0 && dY > 0) {
 mTempImage.setX(rect.left);
 mTempImage.setY(rect.top - mFixH);
 } else {
 mTempImage.setX(lastRect.left + dX);
 mTempImage.setY(lastRect.top - mFixH + dY);
 }
 mTempImage.getGlobalVisibleRect(rect);
 if (SCREEN_H - bottomViewH < rect.bottom) {
 isDel = true;
 trash.setBackgroundResource(R.drawable.base_trash_open);
 } else {
 isDel = false;
 trash.setBackgroundResource(R.drawable.base_trash_close);
 }
}
}
public void addData(String path) {
mDraggableAdapter.addData(0, path);
mDraggableAdapter.notifyItemChanged(mDraggableAdapter.getData().size()-1);
}
public void addData(List<String> path){
int size = mDraggableAdapter.getData().size();
int offset = mImageCount - size + 1;
if(offset > path.size()){
 offset = path.size();
}
mDraggableAdapter.addData(0, path.subList(0,offset));
mDraggableAdapter.notifyItemChanged(mDraggableAdapter.getData().size() -1);
}
public void setImageCount(int mImageCount) {
this.mImageCount = mImageCount;
}
public void setAddClick(AddClick mAddClick) {
this.mAddClick = mAddClick;
}
public void setDragCallBack(DragCallBack mDragCallBack) {
this.mDragCallBack = mDragCallBack;
}
/**
* 获取列表
*
* @return
*/
public List<String> getData() {
List<String> res = new LinkedList<>();
for (int i = 0; i < mDraggableAdapter.getData().size() - 1; i++) {
 res.add(mDraggableAdapter.getData().get(i));
}
return res;
}
/**
* 底部进入
*/
private void in() {
mBottomView.setVisibility(View.VISIBLE);
ObjectAnimator animator = ObjectAnimator.ofFloat(mBottomView, "translationY", 0)
 .setDuration(200);
animator.start();
}
/**
* 底部移除屏幕外部
*/
private void out() {
final int moveX = DisplayUtil.dpToPx(55);
ObjectAnimator animator = ObjectAnimator.ofFloat(mBottomView, "translationY", moveX)
 .setDuration(200);
animator.addListener(new AnimatorListenerAdapter() {
 @Override
 public void onAnimationEnd(Animator animation) {
 super.onAnimationEnd(animation);
 mBottomView.setVisibility(View.GONE);
 trash.setBackgroundResource(R.drawable.base_trash_close);
 }
});
animator.start();
}
public interface AddClick {
void onAdd();
}
public interface DragCallBack{
void onStart();
void onEnd();
}
}

iamge_item.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/l"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >

<ImageView
android:scaleType="fitXY"
android:id="@+id/image"
android:layout_width="149dp"
android:layout_height="149dp" />

<ImageView
android:id="@+id/image2"
android:visibility="gone"
android:layout_width="149dp"
android:layout_height="149dp" />
</LinearLayout>

总结

以上所述是小编给大家介绍的Android 仿微信发动态九宫格拖拽、删除功能网站的支持！
如果你觉得本文对你有帮助，欢迎转载，烦请注明出处，谢谢！

来源：https://blog.csdn.net/INTKILOW/article/details/103101782