package me.weyye.todaynews.ui.adapter;
import android.graphics.Bitmap;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.widget.FrameLayout;
import android.widget.ImageView;
import com.chad.library.adapter.base.BaseMultiItemQuickAdapter;
import com.chad.library.adapter.base.BaseViewHolder;
import java.util.List;
import me.weyye.todaynews.R;
import me.weyye.todaynews.listener.OnChannelDragListener;
import me.weyye.todaynews.model.Channel;
/**
* Created by Administrator on 2017/1/5 0005.
*/
public class ChannelAdapter extends BaseMultiItemQuickAdapter<Channel> {
private BaseViewHolder mEditViewHolder;
private boolean mIsEdit;
private long startTime;
// touch 间隔时间 用于分辨是否是 "点击"
private static final long SPACE_TIME = 100;
private RecyclerView mRecyclerView;
public ChannelAdapter(List<Channel> data) {
super(data);
//默认没有编辑
mIsEdit = false;
addItemType(Channel.TYPE_MY, R.layout.item_channel_title);
addItemType(Channel.TYPE_MY_CHANNEL, R.layout.item_channel);
addItemType(Channel.TYPE_OTHER, R.layout.item_channel_title);
addItemType(Channel.TYPE_OTHER_CHANNEL, R.layout.item_channel);
}
@Override
public BaseViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
mRecyclerView = (RecyclerView) parent;
return super.onCreateViewHolder(parent, viewType);
}
private OnChannelDragListener onChannelDragListener;
public void setOnChannelDragListener(OnChannelDragListener onChannelDragListener) {
this.onChannelDragListener = onChannelDragListener;
}
@Override
protected void convert(final BaseViewHolder baseViewHolder, final Channel channel) {
switch (baseViewHolder.getItemViewType()) {
case Channel.TYPE_MY:
//我的频道
//赋值，以便之后修改文字
mEditViewHolder = baseViewHolder;
baseViewHolder.setText(R.id.tvTitle, channel.Title)
.setOnClickListener(R.id.tvEdit, new View.OnClickListener() {
@Override
public void onClick(View v) {
if (!mIsEdit) {
startEditMode(true);
baseViewHolder.setText(R.id.tvEdit, "完成");
} else {
startEditMode(false);
baseViewHolder.setText(R.id.tvEdit, "编辑");
}
}
});
break;
case Channel.TYPE_OTHER:
//频道推荐
baseViewHolder.setText(R.id.tvTitle, channel.Title)
.setVisible(R.id.tvEdit, false);
break;
case Channel.TYPE_MY_CHANNEL:
//我的频道列表
baseViewHolder
.setVisible(R.id.ivDelete, mIsEdit)//编辑模式就显示删除按钮
.setOnLongClickListener(R.id.rlItemView, new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
if (!mIsEdit) {
//开启编辑模式
startEditMode(true);
mEditViewHolder.setText(R.id.tvEdit, "完成");
}
if (onChannelDragListener != null)
onChannelDragListener.onStarDrag(baseViewHolder);
return true;
}
}).setOnTouchListener(R.id.tvChannel, new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (!mIsEdit) return false;//正常模式无需监听触摸
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
startTime = System.currentTimeMillis();
break;
case MotionEvent.ACTION_MOVE:
if (System.currentTimeMillis() - startTime > SPACE_TIME) {
//当MOVE事件与DOWN事件的触发的间隔时间大于100ms时，则认为是拖拽starDrag
if (onChannelDragListener != null)
onChannelDragListener.onStarDrag(baseViewHolder);
}
break;
case MotionEvent.ACTION_CANCEL:
case MotionEvent.ACTION_UP:
startTime = 0;
break;
}
return false;
}
}).getView(R.id.ivDelete).setTag(true);//在我的频道里面设置true标示，之后会根据这个标示来判断编辑模式是否显示
baseViewHolder.setText(R.id.tvChannel, channel.Title).setOnClickListener(R.id.ivDelete, new View.OnClickListener() {
@Override
public void onClick(View v) {
//执行删除，移动到推荐频道列表
if (mIsEdit) {
int otherFirstPosition = getOtherFirstPosition();
int currentPosition = getViewHolderPosition(baseViewHolder);
//获取到目标View
View targetView = mRecyclerView.getLayoutManager().findViewByPosition(otherFirstPosition);
//获取当前需要移动的View
View currentView = mRecyclerView.getLayoutManager().findViewByPosition(currentPosition);
// 如果targetView不在屏幕内,则indexOfChild为-1 此时不需要添加动画,因为此时notifyItemMoved自带一个向目标移动的动画
// 如果在屏幕内,则添加一个位移动画
if (mRecyclerView.indexOfChild(targetView) >= 0 && otherFirstPosition != -1) {
RecyclerView.LayoutManager manager = mRecyclerView.getLayoutManager();
int spanCount = ((GridLayoutManager) manager).getSpanCount();
int targetX = targetView.getLeft();
int targetY = targetView.getTop();
int myChannelSize = getMyChannelSize();//这里我是为了偷懒 ，算出来我的频道的大小
if (myChannelSize % spanCount == 1) {
//我的频道最后一行 之后一个，移动后
targetY -= targetView.getHeight();
}
//我的频道 移动到 推荐频道的第一个
channel.setItemType(Channel.TYPE_OTHER_CHANNEL);//改为推荐频道类型
if (onChannelDragListener != null)
onChannelDragListener.onMoveToOtherChannel(currentPosition, otherFirstPosition - 1);
startAnimation(currentView, targetX, targetY);
} else {
channel.setItemType(Channel.TYPE_OTHER_CHANNEL);//改为推荐频道类型
if (otherFirstPosition == -1) otherFirstPosition = mData.size();
if (onChannelDragListener != null)
onChannelDragListener.onMoveToOtherChannel(currentPosition, otherFirstPosition - 1);
}
// GlobalParams.mRemovedChannels.add(channel);
}
}
});
break;
case Channel.TYPE_OTHER_CHANNEL:
//频道推荐列表
baseViewHolder.setText(R.id.tvChannel, channel.Title).setVisible(R.id.ivDelete, false)
.setOnClickListener(R.id.tvChannel, new View.OnClickListener() {
@Override
public void onClick(View v) {
int myLastPosition = getMyLastPosition();
int currentPosition = getViewHolderPosition(baseViewHolder);
//获取到目标View
View targetView = mRecyclerView.getLayoutManager().findViewByPosition(myLastPosition);
//获取当前需要移动的View
View currentView = mRecyclerView.getLayoutManager().findViewByPosition(currentPosition);
// 如果targetView不在屏幕内,则indexOfChild为-1 此时不需要添加动画,因为此时notifyItemMoved自带一个向目标移动的动画
// 如果在屏幕内,则添加一个位移动画
if (mRecyclerView.indexOfChild(targetView) >= 0 && myLastPosition != -1) {
RecyclerView.LayoutManager manager = mRecyclerView.getLayoutManager();
int spanCount = ((GridLayoutManager) manager).getSpanCount();
int targetX = targetView.getLeft() + targetView.getWidth();
int targetY = targetView.getTop();
int myChannelSize = getMyChannelSize();//这里我是为了偷懒 ，算出来我的频道的大小
if (myChannelSize % spanCount == 0) {
//添加到我的频道后会换行，所以找到倒数第4个的位置
View lastFourthView = mRecyclerView.getLayoutManager().findViewByPosition(getMyLastPosition() - 3);
// View lastFourthView = mRecyclerView.getChildAt(getMyLastPosition() - 3);
targetX = lastFourthView.getLeft();
targetY = lastFourthView.getTop() + lastFourthView.getHeight();
}
// 推荐频道 移动到 我的频道的最后一个
channel.setItemType(Channel.TYPE_MY_CHANNEL);//改为推荐频道类型
if (onChannelDragListener != null)
onChannelDragListener.onMoveToMyChannel(currentPosition, myLastPosition + 1);
startAnimation(currentView, targetX, targetY);
} else {
channel.setItemType(Channel.TYPE_MY_CHANNEL);//改为推荐频道类型
if (myLastPosition == -1) myLastPosition = 0;//我的频道没有了，改成0
if (onChannelDragListener != null)
onChannelDragListener.onMoveToMyChannel(currentPosition, myLastPosition + 1);
}
// GlobalParams.mRemovedChannels.remove(channel);
}
});
break;
}
}
public int getMyChannelSize() {
int size = 0;
for (int i = 0; i < mData.size(); i++) {
Channel channel = (Channel) mData.get(i);
if (channel.getItemType() == Channel.TYPE_MY_CHANNEL) {
size++;
}
}
return size;
}
private void startAnimation(final View currentView, int targetX, int targetY) {
final ViewGroup parent = (ViewGroup) mRecyclerView.getParent();
final ImageView mirrorView = addMirrorView(parent, currentView);
TranslateAnimation animator = getTranslateAnimator(targetX - currentView.getLeft(), targetY - currentView.getTop());
currentView.setVisibility(View.INVISIBLE);//暂时隐藏
mirrorView.startAnimation(animator);
animator.setAnimationListener(new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
parent.removeView(mirrorView);//删除添加的镜像View
if (currentView.getVisibility() == View.INVISIBLE) {
currentView.setVisibility(View.VISIBLE);//显示隐藏的View
}
}
@Override
public void onAnimationRepeat(Animation animation) {
}
});
}
/**
* 添加需要移动的 镜像View
*/
private ImageView addMirrorView(ViewGroup parent, View view) {
view.destroyDrawingCache();
//首先开启Cache图片 ，然后调用view.getDrawingCache()就可以获取Cache图片
view.setDrawingCacheEnabled(true);
ImageView mirrorView = new ImageView(view.getContext());
//获取该view的Cache图片
Bitmap bitmap = Bitmap.createBitmap(view.getDrawingCache());
mirrorView.setImageBitmap(bitmap);
//销毁掉cache图片
view.setDrawingCacheEnabled(false);
int[] locations = new int[2];
view.getLocationOnScreen(locations);//获取当前View的坐标
int[] parenLocations = new int[2];
mRecyclerView.getLocationOnScreen(parenLocations);//获取RecyclerView所在坐标
FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(bitmap.getWidth(), bitmap.getHeight());
params.setMargins(locations[0], locations[1] - parenLocations[1], 0, 0);
parent.addView(mirrorView, params);//在RecyclerView的Parent添加我们的镜像View，parent要是FrameLayout这样才可以放到那个坐标点
return mirrorView;
}
private int ANIM_TIME = 360;
/**
* 获取位移动画
*/
private TranslateAnimation getTranslateAnimator(float targetX, float targetY) {
TranslateAnimation translateAnimation = new TranslateAnimation(
Animation.RELATIVE_TO_SELF, 0f,
Animation.ABSOLUTE, targetX,
Animation.RELATIVE_TO_SELF, 0f,
Animation.ABSOLUTE, targetY);
// RecyclerView默认移动动画250ms 这里设置360ms 是为了防止在位移动画结束后 remove(view)过早 导致闪烁
translateAnimation.setDuration(ANIM_TIME);
translateAnimation.setFillAfter(true);
return translateAnimation;
}
/**
* 获取推荐频道列表的第一个position
*
* @return
*/
private int getOtherFirstPosition() {
//之前找到了第一个pos直接返回
// if (mOtherFirstPosition != 0) return mOtherFirstPosition;
for (int i = 0; i < mData.size(); i++) {
Channel channel = (Channel) mData.get(i);
if (Channel.TYPE_OTHER_CHANNEL == channel.getItemType()) {
//找到第一个直接返回
return i;
}
}
return -1;
}
/**
* 我的频道最后一个的position
*
* @return
*/
private int getMyLastPosition() {
for (int i = mData.size() - 1; i > -1; i--) {
Channel channel = (Channel) mData.get(i);
if (Channel.TYPE_MY_CHANNEL == channel.getItemType()) {
//找到第一个直接返回
return i;
}
}
return -1;
}
/**
* 开启编辑模式
*/
private void startEditMode(boolean isEdit) {
mIsEdit = isEdit;
int visibleChildCount = mRecyclerView.getChildCount();
for (int i = 0; i < visibleChildCount; i++) {
View view = mRecyclerView.getChildAt(i);
ImageView imgEdit = (ImageView) view.findViewById(R.id.ivDelete);
if (imgEdit != null) {
boolean isVis = imgEdit.getTag() == null ? false : (boolean) imgEdit.getTag();
imgEdit.setVisibility(isVis && isEdit ? View.VISIBLE : View.INVISIBLE);
}
}
}
}