Java RecyclerView单击事件不工作
由于某些原因,尽管项目显示正常,但单击事件对my RecyclerView不起作用。根据屏幕大小,我使用了两种不同的适配器。有人知道它为什么不起作用以及如何修复吗 recyclerview\u item\u gridcell(用于较大屏幕) RecyclerView适配器类(用于较小屏幕)Java RecyclerView单击事件不工作,java,android,xml,android-recyclerview,android-adapter,Java,Android,Xml,Android Recyclerview,Android Adapter,由于某些原因,尽管项目显示正常,但单击事件对my RecyclerView不起作用。根据屏幕大小,我使用了两种不同的适配器。有人知道它为什么不起作用以及如何修复吗 recyclerview\u item\u gridcell(用于较大屏幕) RecyclerView适配器类(用于较小屏幕) 公共类MyRecycleServiceAdapterll扩展了RecycleView.Adapter{ 私有字符串[]mData; 私人停车场; 私有MyRecycleServiceAdapterll.Ite
公共类MyRecycleServiceAdapterll扩展了RecycleView.Adapter{
私有字符串[]mData;
私人停车场;
私有MyRecycleServiceAdapterll.ItemClickListener McClickListener;
MyRecycleServiceAdapterll(上下文,字符串[]数据){
this.mInflater=LayoutInflater.from(上下文);
this.mData=数据;
}
@凌驾
@非空
public MyRecycleServiceAdapterll.ViewHolder onCreateViewHolder(@NonNull ViewGroup父级,int-viewType){
视图=最小充气器。充气(R.layout.recyclerview\u item\u textview,父项,false);
返回新的MyRecycleServiceAdapterll.ViewHolder(视图);
}
@凌驾
BindViewHolder上的公共无效(@NonNull myRecycleServiceAdapterll.ViewHolder,int位置){
holder.myTextView.setText(mData[position]);
}
@凌驾
public int getItemCount(){
返回mData.length;
}
公共类ViewHolder扩展了RecyclerView.ViewHolder实现了View.OnClickListener{
文本视图myTextView;
ViewHolder(视图项视图){
超级(项目视图);
myTextView=itemView.findViewById(R.id.item\u text);
setOnClickListener(这个);
}
@凌驾
公共void onClick(视图){
if(mClickListener!=null)mClickListener.onItemClick(视图,getAdapterPosition());
}
}
字符串getItem(int-id){
返回mData[id];
}
void setClickListener(myRecycleServiceAdapterLL.ItemClickListener ItemClickListener){
this.mClickListener=itemClickListener;
}
公共接口项ClickListener{
void onItemClick(视图,int位置);
}
}
RecyclerView适配器类(用于较大屏幕)
公共类MyRecycleServiceAdapterGL扩展了RecycleView.Adapter{
私有字符串[]mData;
私人停车场;
私有项ClickListener McClickListener;
MyRecycleServiceAdapterGL(上下文,字符串[]数据){
this.mInflater=LayoutInflater.from(上下文);
this.mData=数据;
}
@凌驾
@非空
public MyRecycleServiceAdapterGL.ViewHolder onCreateViewHolder(@NonNull ViewGroup父级,int-viewType){
View=mInflater.inflate(R.layout.recyclerview\u item\u gridcell,父项,false);
返回新的MyRecycleServiceAdapterGL.ViewHolder(视图);
}
@凌驾
public void onBindViewHolder(@NonNull ViewHolder,int位置){
holder.myTextView.setText(mData[position]);
}
@凌驾
public int getItemCount(){
返回mData.length;
}
公共类ViewHolder扩展了RecyclerView.ViewHolder实现了View.OnClickListener{
文本视图myTextView;
ViewHolder(视图项视图){
超级(项目视图);
myTextView=itemView.findViewById(R.id.info\u text);
setOnClickListener(这个);
}
@凌驾
公共void onClick(视图){
if(mClickListener!=null)mClickListener.onItemClick(视图,getAdapterPosition());
}
}
字符串getItem(int-id){
返回mData[id];
}
void setClickListener(myRecycleServiceAdapterGL.ItemClickListener ItemClickListener){
this.mClickListener=itemClickListener;
}
//父活动将实现此方法以响应单击事件
公共接口项ClickListener{
void onItemClick(视图,int位置);
}
}
检查您的根视图在xml单元格中是否可单击和聚焦。你们应该能够看到触地时的涟漪
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:padding="20dp"
android:layout_width="match_parent"
android:clickable="true"
android:focusable="true"
android:layout_height="wrap_content"> ....
。。。。
及
更新2
您的线性布局没有可接触区域。这就是为什么我们不能触发单击方法,因为该按钮填充根。我们无法接触根元素。因此,您应该在该状态下使用button.setClickListener。在适配器类中(两个类)
您可以在整个itemview上设置OnClickListener
,而应该在myTextView上设置OnClickListener
那就好像
myTextView = itemView.findViewById(R.id.info_text);
myTextView.setOnClickListener(this);
你的代码看起来不错。需要检查根视图是否可单击。请发送单元格的xml,以将其替换为LinearLayoutCompat。可能是错误或其他原因。因此,文本视图会触发click事件?文本视图会触发click事件,但由于某些原因,它不适用于LinearLayout
。它现在适用于LinearLayout
,但不适用于按钮本身。请检查我的答案。这不是因为可点击和可犯规。这是因为您在整个项目视图上设置了click listener,而不是在文本视图上设置了click listener
public class MainActivity extends Activity implements MyRecyclerViewAdapterGL.ItemClickListener, MyRecyclerViewAdapterLL.ItemClickListener {
boolean themeState;
MyRecyclerViewAdapterGL adapterGL;
MyRecyclerViewAdapterLL adapterLL;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
boolean isScreenSmall = getResources().getBoolean(R.bool.is_screen_small);
setContentView(R.layout.activity_main);
String[] dataArray = {"Item A", "Item B", "Item C", "Item D" ,"Item E" ,"Item F"};
if(isScreenSmall){
// ItemDecoration for small devices
RecyclerView recyclerViewLL = findViewById(R.id.recyclerView_list);
recyclerViewLL.setLayoutManager(new LinearLayoutManager(this));
adapterLL = new MyRecyclerViewAdapterLL(this, dataArray);
adapterLL.setClickListener(this);
recyclerViewLL.addItemDecoration(new DividerItemDecoration(this, LinearLayout.VERTICAL));
recyclerViewLL.setAdapter(adapterLL);
}
else{
// ItemDecoration for large devices
RecyclerView recyclerViewGL = findViewById(R.id.recyclerView_list);
int numberOfColumns = 2;
recyclerViewGL.setLayoutManager(new GridLayoutManager(this, numberOfColumns));
adapterGL = new MyRecyclerViewAdapterGL(this, dataArray);
adapterGL.setClickListener(this);
recyclerViewGL.setAdapter(adapterGL);
}
}
@Override
public void onItemClick(View view, int position) {
if (position == 0) {
Toast.makeText(MainActivity.this, "Item A was clicked", LENGTH_SHORT).show();
} else if (position == 1) {
Toast.makeText(MainActivity.this, "Item B was clicked", LENGTH_SHORT).show();
} else if (position == 2) {
Toast.makeText(MainActivity.this, "Item C was clicked", LENGTH_SHORT).show();
}
}
}
public class MyRecyclerViewAdapterLL extends RecyclerView.Adapter<MyRecyclerViewAdapterLL.ViewHolder> {
private String[] mData;
private LayoutInflater mInflater;
private MyRecyclerViewAdapterLL.ItemClickListener mClickListener;
MyRecyclerViewAdapterLL(Context context, String[] data) {
this.mInflater = LayoutInflater.from(context);
this.mData = data;
}
@Override
@NonNull
public MyRecyclerViewAdapterLL.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = mInflater.inflate(R.layout.recyclerview_item_textview, parent, false);
return new MyRecyclerViewAdapterLL.ViewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull MyRecyclerViewAdapterLL.ViewHolder holder, int position) {
holder.myTextView.setText(mData[position]);
}
@Override
public int getItemCount() {
return mData.length;
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
TextView myTextView;
ViewHolder(View itemView) {
super(itemView);
myTextView = itemView.findViewById(R.id.item_text);
itemView.setOnClickListener(this);
}
@Override
public void onClick(View view) {
if (mClickListener != null) mClickListener.onItemClick(view, getAdapterPosition());
}
}
String getItem(int id) {
return mData[id];
}
void setClickListener(MyRecyclerViewAdapterLL.ItemClickListener itemClickListener) {
this.mClickListener = itemClickListener;
}
public interface ItemClickListener {
void onItemClick(View view, int position);
}
}
public class MyRecyclerViewAdapterGL extends RecyclerView.Adapter<MyRecyclerViewAdapterGL.ViewHolder> {
private String[] mData;
private LayoutInflater mInflater;
private ItemClickListener mClickListener;
MyRecyclerViewAdapterGL(Context context, String[] data) {
this.mInflater = LayoutInflater.from(context);
this.mData = data;
}
@Override
@NonNull
public MyRecyclerViewAdapterGL.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = mInflater.inflate(R.layout.recyclerview_item_gridcell, parent, false);
return new MyRecyclerViewAdapterGL.ViewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
holder.myTextView.setText(mData[position]);
}
@Override
public int getItemCount() {
return mData.length;
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
TextView myTextView;
ViewHolder(View itemView) {
super(itemView);
myTextView = itemView.findViewById(R.id.info_text);
itemView.setOnClickListener(this);
}
@Override
public void onClick(View view) {
if (mClickListener != null) mClickListener.onItemClick(view, getAdapterPosition());
}
}
String getItem(int id) {
return mData[id];
}
void setClickListener(MyRecyclerViewAdapterGL.ItemClickListener itemClickListener) {
this.mClickListener = itemClickListener;
}
// parent activity will implement this method to respond to click events
public interface ItemClickListener {
void onItemClick(View view, int position);
}
}
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:padding="20dp"
android:layout_width="match_parent"
android:clickable="true"
android:focusable="true"
android:layout_height="wrap_content"> ....
<TextView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/item_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true"
android:background="?android:attr/selectableItemBackground"
/>
myTextView = itemView.findViewById(R.id.info_text);
myTextView.setOnClickListener(this);