前言
已经很久没有写简书了，正好最近有遇到一个安卓仿iOS的抖动删除功能。小编研究了一下，正好分享出来。先放个图给各位看官们，看看是不是自己需要的。
实现
其实这个功能并不复杂，下面开始说明一下怎么做。有需求的看官们可以直接拉到最后面查看Demo。
首先是添加依赖库Recyclerview
在app文件中的build.gradle里的dependencies下方，添加依赖库Recyclerview
implementation 'com.android.support:recyclerview-v7:28.0.0'
布局文件
首先是总体的布局，小编就随便弄了一下，差不多就行了，如下：
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.recyclerview.widget.RecyclerView
android:layout_width="300dp"
android:layout_height="500dp"
android:layout_centerInParent="true"
android:background="@color/colorPrimary"
android:id="@+id/recyclerView">
</androidx.recyclerview.widget.RecyclerView>
</RelativeLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
然后是item的布局，item可以按照自己的喜好弄，这里小编也只是弄了一个简易的，如下：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_width="67dp"
android:layout_height="67dp"
android:id="@+id/icone_item"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:layout_marginLeft="8dp"
android:background="@drawable/icone_background">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/item_text"
android:textColor="@color/colorPrimaryDark"
android:layout_centerInParent="true"
android:textSize="30dp">
</TextView>
</RelativeLayout>
<RelativeLayout
android:layout_width="67dp"
android:layout_height="67dp"
android:background="@drawable/icone_mask_border"
android:layout_alignTop="@id/icone_item"
android:layout_alignLeft="@id/icone_item"
android:id="@+id/icone_item_mask"
android:visibility="invisible">
</RelativeLayout>
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/close"
android:layout_alignRight="@id/icone_item"
android:layout_marginRight="-8dp"
android:id="@+id/icone_item_delete"
android:visibility="invisible">
</ImageButton>
</RelativeLayout>
设置模型
然后就是模型的设置，小编在这里只设了两个，i代表的是所显示的数字，isDetele代表的是是否显示删除样式，如下：
public class Model {
int i;
boolean isDetele;
}
设置Adapter
这里是比较关键的一个步骤，按钮的点击、长按、删除都需要在这里用代理分享出去，然后还需要根据进来的数据显示相应的样式，如下：
public class ItemAdapter extends RecyclerView.Adapter<ItemAdapter.ViewHolder> {
public interface OnItemClickListener {
void onClick(int position);
void onDeleteClickListener(int position);
void onLongClick(View view, int position);
}
private Context mContext;
private OnItemClickListener mListener;
private List<Model> mDatas = new ArrayList<>();
public ItemAdapter(Context context, List<Model> datas) {
mContext = context;
mDatas = datas;
}
public void setOnItemClickListener(OnItemClickListener listener) {
mListener = listener;
}
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item, parent, false);
ViewHolder holder = new ViewHolder(view);
return holder;
}
@Override
public void onBindViewHolder(@NonNull final ViewHolder holder, final int position) {
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (mListener != null) {
mListener.onClick(position);
}
}
});
holder.delete.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (mListener != null) {
mListener.onDeleteClickListener(position);
}
}
});
holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(final View view) {
Animation rotate = AnimationUtils.loadAnimation(mContext, R.anim.rotate);
view.startAnimation(rotate);
holder.delete.setVisibility(View.VISIBLE);
holder.mask.setVisibility(View.VISIBLE);
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
view.clearAnimation();
}
}, 1 * 1000);
if (mListener != null) {
mListener.onLongClick(view, position);
}
return true;
}
});
Boolean isDelete = mDatas.get(position).isDetele;
holder.textView.setText(String.valueOf(mDatas.get(position).i));
if (isDelete) {
holder.delete.setVisibility(View.VISIBLE);
holder.mask.setVisibility(View.VISIBLE);
}else {
holder.delete.setVisibility(View.INVISIBLE);
holder.mask.setVisibility(View.INVISIBLE);
}
}
@Override
public int getItemCount() {
return mDatas.size();
}
static class ViewHolder extends RecyclerView.ViewHolder {
RelativeLayout backgound;
RelativeLayout mask;
TextView textView;
ImageButton delete;
public ViewHolder(@NonNull View itemView) {
super(itemView);
backgound = itemView.findViewById(R.id.icone_item);
textView = itemView.findViewById(R.id.item_text);
mask = itemView.findViewById(R.id.icone_item_mask);
delete = itemView.findViewById(R.id.icone_item_delete);
}
}
}
最后
最后，就是在显示的Activity页面中调用。设置相应的参数来设定显示的方式，各种手势的处理等等，如下：
public class ItemAdapter extends RecyclerView.Adapter<ItemAdapter.ViewHolder> {
public interface OnItemClickListener {
void onClick(int position);
void onDeleteClickListener(int position);
void onLongClick(View view, int position);
}
private Context mContext;
private OnItemClickListener mListener;
private List<Model> mDatas = new ArrayList<>();
public ItemAdapter(Context context, List<Model> datas) {
mContext = context;
mDatas = datas;
}
public void setOnItemClickListener(OnItemClickListener listener) {
mListener = listener;
}
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item, parent, false);
ViewHolder holder = new ViewHolder(view);
return holder;
}
@Override
public void onBindViewHolder(@NonNull final ViewHolder holder, final int position) {
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (mListener != null) {
mListener.onClick(position);
}
}
});
holder.delete.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (mListener != null) {
mListener.onDeleteClickListener(position);
}
}
});
holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(final View view) {
Animation rotate = AnimationUtils.loadAnimation(mContext, R.anim.rotate);
view.startAnimation(rotate);
holder.delete.setVisibility(View.VISIBLE);
holder.mask.setVisibility(View.VISIBLE);
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
view.clearAnimation();
}
}, 1 * 1000);
if (mListener != null) {
mListener.onLongClick(view, position);
}
return true;
}
});
Boolean isDelete = mDatas.get(position).isDetele;
holder.textView.setText(String.valueOf(mDatas.get(position).i));
if (isDelete) {
holder.delete.setVisibility(View.VISIBLE);
holder.mask.setVisibility(View.VISIBLE);
}else {
holder.delete.setVisibility(View.INVISIBLE);
holder.mask.setVisibility(View.INVISIBLE);
}
}
@Override
public int getItemCount() {
return mDatas.size();
}
static class ViewHolder extends RecyclerView.ViewHolder {
RelativeLayout backgound;
RelativeLayout mask;
TextView textView;
ImageButton delete;
public ViewHolder(@NonNull View itemView) {
super(itemView);
backgound = itemView.findViewById(R.id.icone_item);
textView = itemView.findViewById(R.id.item_text);
mask = itemView.findViewById(R.id.icone_item_mask);
delete = itemView.findViewById(R.id.icone_item_delete);
}
}
}
这篇文章到这里就结束了，写的不好的地方欢迎大家指出，Demo下载地址：Demo。最后，希望这篇文章对各位看官们有所帮助。如果看官们可以给小编一个小小的支持那就更好了。
