如何解决无法使用EditText在android应用中实现搜索栏
- 我正在创建一个应用，其中我尝试使用无法执行的EditText bt实现搜索栏。一旦我ruinging应用程序。当我尝试在EditText中输入文本时，该应用会自动关闭
- 这是我的家庭活动
package com.udaan_tech.the_beauty_secret_97;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import java.util.ArrayList;
import java.util.List;
public class HomeActivity extends AppCompatActivity {
Button btn_logout;
FirebaseAuth mFirebaseAuth;
private FirebaseAuth.AuthStateListener mAuthstatelistener;
RecyclerView mRecyclerView;
List<Productdataclass> myItemlist;
Productdataclass mProductdataclass;
Home_adaptor myAdapter;
ImageView upload;
private DatabaseReference databaseReference;
private ValueEventListener eventListener;
ProgressDialog progressDialog;
EditText text_Search;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
//getSupportActionBar().hide();
btn_logout = findViewById(R.id.btn_logout);
mRecyclerView =(RecyclerView) findViewById(R.id.recyclerview);
upload= (ImageView)findViewById(R.id.iv_logo);
text_Search =findViewById(R.id.txt_Search);
final String abc = "dummy123@gmail.com";
GridLayoutManager gridLayoutManager = new GridLayoutManager(HomeActivity.this,1);
mRecyclerView.setLayoutManager(gridLayoutManager);
myItemlist = new ArrayList<>();
progressDialog = new ProgressDialog(this);
progressDialog.setMessage("Fetching Data From Server...Please Wait");
final Home_adaptor myAdapter = new Home_adaptor(HomeActivity.this,myItemlist);
mRecyclerView.setAdapter(myAdapter);
databaseReference = FirebaseDatabase.getInstance().getReference("Products List");
progressDialog.show();
eventListener = databaseReference.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange( DataSnapshot dataSnapshot) {
myItemlist.clear();
for (DataSnapshot itemSnapshot: dataSnapshot.getChildren()) {
Productdataclass ItemData = itemSnapshot.getValue(Productdataclass.class);
myItemlist.add(ItemData);
}
myAdapter.notifyDataSetChanged();
progressDialog.dismiss();
}
@Override
public void onCancelled(@NonNull DatabaseError error) {
progressDialog.dismiss();
}
});
text_Search.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence,int i,int i1,int i2) {
}
@Override
public void onTextChanged(CharSequence charSequence,int i2) {
}
@Override
public void afterTextChanged(Editable s) {
filter(s.toString());
}
});
btn_logout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
FirebaseAuth.getInstance().signOut();
Intent logout = new Intent(HomeActivity.this,Sign_In_Activity.class);
startActivity(logout);
}
});
upload.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (FirebaseAuth.getInstance().getCurrentUser().getEmail().contentEquals(abc)) {
Intent upload = new Intent(HomeActivity.this,UploadActivity.class);
startActivity(upload);
}
else{
Toast.makeText(HomeActivity.this,"Welcome to The Beauty Secret97 By Aliya Gawankar",Toast.LENGTH_SHORT).show();
}
}
});
}
@Override
public void onBackPressed() {
super.onBackPressed();
Toast.makeText(this,"Redirecting to Home",Toast.LENGTH_SHORT).show();
Intent backintent = new Intent(HomeActivity.this,MainActivity.class);
startActivity(backintent);
}
private void filter(String text) {
ArrayList<Productdataclass> filterlist = new ArrayList<>();
for (Productdataclass item: myItemlist){
if(item.getItem_name().toLowerCase().contains(text.toLowerCase())){
filterlist.add(item);
}
}
myAdapter.filteredlist(filterlist);
}
}
3。这是我的模态班
import java.util.ArrayList;
public class Productdataclass {
private String item_name;
private String item_description;
private String item_price;
private String item_image;
private String availablity;
public Productdataclass(String item_name,String item_description,String item_price,String item_image,String availablity) {
this.item_name = item_name;
this.item_description = item_description;
this.item_price = item_price;
this.item_image = item_image;
this.availablity = availablity;
}
public Productdataclass(){
}
public String getItem_name() {
return item_name;
}
public String getItem_description() {
return item_description;
}
public String getItem_price() {
return item_price;
}
public String getItem_image() {
return item_image;
}
public String getAvailablity() {
return availablity;
}
}
4。这是我的适配器类
package com.udaan_tech.the_beauty_secret_97;
import android.content.Context;
import android.content.Intent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.cardview.widget.CardView;
import androidx.recyclerview.widget.RecyclerView;
import com.bumptech.glide.Glide;
import java.util.ArrayList;
import java.util.List;
public class Home_adaptor extends RecyclerView.Adapter<itemviewHolder> {
private Context mContext;
private List<Productdataclass> myItemlist;
public Home_adaptor(Context mContext,List<Productdataclass> myItemlist) {
this.mContext = mContext;
this.myItemlist = myItemlist;
}
@Override
public itemviewHolder onCreateViewHolder(@NonNull ViewGroup parent,int viewType) {
View mView = LayoutInflater.from(parent.getContext()).inflate(R.layout.cv_home,parent,false);
return new itemviewHolder(mView);
}
@Override
public void onBindViewHolder(@NonNull final itemviewHolder holder,int position) {
Glide.with(mContext)
.load(myItemlist.get(position).getItem_image())
.into(holder.image_iv);
//holder.image_iv.setImageResource(myItemlist.get(position).getItem_image());
holder.title_tv.setText(myItemlist.get(position).getItem_name());
holder.availablity_tv.setText(myItemlist.get(position).getAvailablity());
holder.price_tv.setText(myItemlist.get(position).getItem_price());
holder.desc_tv.setText(myItemlist.get(position).getItem_description());
holder.mCardview.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(mContext,DescriptionActivity.class);
intent.putExtra("Image",myItemlist.get(holder.getAdapterPosition()).getItem_image());
intent.putExtra("Title",myItemlist.get(holder.getAdapterPosition()).getItem_name());
intent.putExtra("Price",myItemlist.get(holder.getAdapterPosition()).getItem_price());
intent.putExtra("Desc",myItemlist.get(holder.getAdapterPosition()).getItem_description());
intent.putExtra("Stock",myItemlist.get(holder.getAdapterPosition()).getAvailablity());
mContext.startActivity(intent);
}
});
}
@Override
public int getItemCount() {
return myItemlist.size();
}
public void filteredlist(ArrayList<Productdataclass> filterlist) {
myItemlist = filterlist;
notifyDataSetChanged();
}
}
class itemviewHolder extends RecyclerView.ViewHolder {
ImageView image_iv;
TextView title_tv,availablity_tv,price_tv,desc_tv;
CardView mCardview;
public itemviewHolder(View itemView) {
super(itemView);
image_iv = itemView.findViewById(R.id.image_iv);
title_tv = itemView.findViewById(R.id.title_tv);
availablity_tv = itemView.findViewById(R.id.availblity_tv);
price_tv = itemView.findViewById(R.id.price_tv);
desc_tv = itemView.findViewById(R.id.desc_tv);
mCardview = itemView.findViewById(R.id.cardview_item);
}
}
5。这是我的家庭活动的xml文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
android:background="@drawable/appback"
android:orientation="vertical"
tools:context=".HomeActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:orientation="horizontal">
<ImageView
android:id="@+id/iv_logo"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_weight="1"
android:padding="5dp"
app:srcCompat="@drawable/logo1home" />
<ImageView
android:id="@+id/imageView5"
android:layout_width="20dp"
android:layout_height="match_parent"
android:layout_gravity="bottom"
android:layout_marginLeft="10dp"
android:layout_weight="1"
android:padding="12dp"
app:srcCompat="@drawable/search" />
<EditText
android:id="@+id/txt_Search"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:hint="Type here to search"
android:inputType="textPersonName" />
<Button
android:id="@+id/btn_logout"
android:layout_width="52dp"
android:layout_height="match_parent"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_weight="1"
android:background="@drawable/pink_btn"
android:text="Log Out" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recyclerview"
android:layout_width="match_parent"
android:layout_height="match_parent">
</androidx.recyclerview.widget.RecyclerView>
</LinearLayout>
</LinearLayout>
</LinearLayout>
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