Arrays 搜索功能无法获取正确的项目位置
这是我的主页，具有搜索功能：Arrays 搜索功能无法获取正确的项目位置,arrays,android-studio,sorting,listview,search,Arrays,Android Studio,Sorting,Listview,Search,这是我的主页，具有搜索功能： public class Admin extends AppCompatActivity { ListView _admin_listview; Admin_Adapter AA; Homepage_ListView homepageListView; private final Handler handler = new Handler(); public static ArrayList<Homepage_Lis
public class Admin extends AppCompatActivity {
ListView _admin_listview;
Admin_Adapter AA;
Homepage_ListView homepageListView;
private final Handler handler = new Handler();
public static ArrayList<Homepage_ListView> UserArrayList = new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_admin);
ActionBar actionBar = getSupportActionBar();
actionBar.setTitle("Admin Homepage");
_admin_listview = (ListView) findViewById(R.id.admin_listview);
retrieveData();
doTheAutoRefresh();
AA = new Admin_Adapter(this, UserArrayList);
_admin_listview.setAdapter(AA);
_admin_listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, final int position, final long Username) {
startActivity(new Intent(Admin.this, job_detail_admin.class).putExtra("position", position));
}
});
AA.notifyDataSetChanged();
//Initialise and assign variable
BottomNavigationView bottomNavigationView = findViewById(R.id.bot_navigator);
//Set Home Select
bottomNavigationView.setSelectedItemId(R.id.nav_home);
//Perform ItemSelectedListener
bottomNavigationView.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
switch (menuItem.getItemId()) {
case R.id.nav_home:
return true;
case R.id.nav_add_user:
startActivity(new Intent(getApplicationContext(), add_user_function.class));
overridePendingTransition(0,0);
return true;
case R.id.nav_add_job:
startActivity(new Intent(getApplicationContext(), add_job_function.class));
overridePendingTransition(0,0);
return true;
case R.id.nav_logout:
startActivity(new Intent(getApplicationContext(), MainActivity.class));
overridePendingTransition(0,0);
return true;
}
return false;
}
});
}
public void retrieveData() {
StringRequest request = new StringRequest(Request.Method.POST, "http://localhost/taskapp00/User_joblist.php", new Response.Listener<String>() {
@Override
public void onResponse(String response) {
UserArrayList.clear();
try{
JSONObject jObject = new JSONObject(response);
String success = jObject.getString("success");
JSONArray jArray = jObject.getJSONArray("phpjob");
if(success.equals("1")) {
for(int i=0;i<jArray.length();i++) {
JSONObject object = jArray.getJSONObject(i);
String username = object.getString("Username");
String usertype = object.getString("Usertype");
String house = object.getString("House");
String assignment = object.getString("Assignment");
String location = object.getString("Location");
String tenant_tel_no = object.getString("Tenant_tel_no");
String job = object.getString("Job");
String location_in_house = object.getString("Location_in_house");
String message = object.getString("Message");
String status = object.getString("Status");
String confirmation = object.getString("Confirmation");
String image0 = object.getString("Image0");
String image1 = object.getString("Image1");
String image2 = object.getString("Image2");
homepageListView = new Homepage_ListView(username, usertype, assignment, house, location, tenant_tel_no, job, location_in_house, message, status, confirmation, image0, image1, image2);
UserArrayList.add(homepageListView);
AA.notifyDataSetChanged();
}
}
}
catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
if (error instanceof TimeoutError || error instanceof NoConnectionError) {
Toast.makeText(getApplicationContext(), "Communication Error!", Toast.LENGTH_SHORT).show();
} else if (error instanceof AuthFailureError) {
Toast.makeText(getApplicationContext(), "Authentication Error!", Toast.LENGTH_SHORT).show();
} else if (error instanceof ServerError) {
Toast.makeText(getApplicationContext(), "Server Side Error!", Toast.LENGTH_SHORT).show();
} else if (error instanceof NetworkError) {
Toast.makeText(getApplicationContext(), "Network Error!", Toast.LENGTH_SHORT).show();
} else if (error instanceof ParseError) {
Toast.makeText(getApplicationContext(), "Parse Error!", Toast.LENGTH_SHORT).show();
}
}
});
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(request);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.search_function, menu);
//E/SpannableStringBuilder: SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
MenuItem searchItem = menu.findItem(R.id.search);
SearchView searchView = (SearchView) searchItem.getActionView();//returns the object of class that is specified within the "actionviewclass"
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String query) {
return false;
}
@Override
public boolean onQueryTextChange(String newText) {
//it gets called with every new IP string. newText=Ip string
ArrayList<Homepage_ListView> results = new ArrayList<>();
for (Homepage_ListView x: UserArrayList) {
if (x.getUsername().toLowerCase().contains(newText) || x.getUsertype().toLowerCase().contains(newText) || x.getLocation().toLowerCase().contains(newText))
results.add(x);
}
((Admin_Adapter)_admin_listview.getAdapter()).update(results);//refresh listview
return false;
}
});
return true;
}
private void doTheAutoRefresh() {
if (UserArrayList!=null && UserArrayList.size()>0) {
UserArrayList.clear();
}
Runnable refresh = new Runnable() {
@Override
public void run() {
retrieveData();
handler.postDelayed(this, 1000);
}
};
handler.postDelayed(refresh, 1000);
}
}
公共类管理扩展AppCompative活动{
ListView _admin_ListView；
管理适配器AA；
主页\列表视图主页页面列表视图；
私有最终处理程序=新处理程序（）；
public static ArrayList UserArrayList=new ArrayList（）；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_admin）；
ActionBar ActionBar=getSupportActionBar（）；
actionBar.setTitle（“管理员主页”）；
_admin_listview=（listview）findViewById（R.id.admin_listview）；
检索数据（）；
doTheAutoRefresh（）；
AA=新的管理适配器（这是UserArrayList）；
_admin_listview.setAdapter（AA）；
_admin_listview.setOnItemClickListener（新的AdapterView.OnItemClickListener（）{
@凌驾
public void onItemClick（AdapterView AdapterView、视图视图、最终整型位置、最终长用户名）{
startActivity（新的意图（管理本、工作细节、管理类）.putExtra（“职位”，职位））；
}
});
AA.notifyDataSetChanged（）；
//初始化并分配变量
BottomNavigationView BottomNavigationView=findViewById（R.id.bot\u navigator）；
//设置主页选择
bottomNavigationView.setSelectedItemId（R.id.nav_home）；
//执行ItemSelectedListener
bottomNavigationView.setOnNavigationItemSelectedListener（新的bottomNavigationView.OnNavigationItemSelectedListener（）{
@凌驾
公共布尔值onNavigationItemSelected（@NonNull MenuItem MenuItem）{
开关（menuItem.getItemId（））{
案例R.id.nav_主页：
返回true；
案例R.id.nav\u添加用户：
startActivity（新意图（getApplicationContext（），add_user_function.class））；
覆盖转换（0,0）；
返回true；
案例R.id.nav_添加_作业：
startActivity（新意图（getApplicationContext（），add_job_function.class））；
覆盖转换（0,0）；
返回true；
案例R.id.nav_注销：
startActivity（新意图（getApplicationContext（），MainActivity.class））；
覆盖转换（0,0）；
返回true；
}
返回false；
}
});
}
公共无效检索数据（）{
StringRequest=新的StringRequest（request.Method.POST）http://localhost/taskapp00/User_joblist.php，新的响应。侦听器（）{
@凌驾
公共void onResponse（字符串响应）{
UserArrayList.clear（）；
试一试{
JSONObject jObject=新JSONObject（响应）；
String success=jObject.getString（“success”）；
JSONArray jArray=jObject.getJSONArray（“phpjob”）；
如果（成功等于（“1”））{
对于（int i=0；i0）{
UserArrayList.clear（）；
}
Runnable refresh=new Runnable（）{
@凌驾
公开募捐{
检索数据（）；
handler.postDelayed（这个，1000）；
}
};
handler.postDelayed（刷新，1000）；
}
}
public class Admin_Adapter extends ArrayAdapter<Homepage_ListView> implements Filterable {
List<Homepage_ListView> arrayhpJobList;
public CardView _admin_cardview;
public Admin_Adapter(@NonNull Context context, List<Homepage_ListView> arrayhpJobList) {
super(context, R.layout.cardview_admin, arrayhpJobList);
this.arrayhpJobList = arrayhpJobList;
notifyDataSetChanged();
}
//**must have for search function**
@Override
public int getCount() {//return the no. of list items
return arrayhpJobList.size();
}
@NonNull
@Override
public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
//inflate layout and pass
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.cardview_admin, null, true);
_admin_cardview = view.findViewById(R.id.admin_cardview);
TextView _house = view.findViewById(R.id.House_AL);
TextView _username = view.findViewById(R.id.Username_AL);
TextView _assigned = view.findViewById(R.id.Assigned_AL);
if (Admin.UserArrayList.get(position).getStatus().matches("1") && Admin.UserArrayList.get(position).getConfirmation().matches("0")) {
_admin_cardview.setCardBackgroundColor(0xFFFFFF8D);
}
else if (Admin.UserArrayList.get(position).getStatus().matches("1") && Admin.UserArrayList.get(position).getConfirmation().matches("1")) {
_admin_cardview.setCardBackgroundColor(0xFFFA5D50);
}
else if (Admin.UserArrayList.get(position).getConfirmation().matches("2")) {
_admin_cardview.setCardBackgroundColor(0xFFCCFF90);
}
else {
_admin_cardview.setCardBackgroundColor(0xFFE7E7E7);
}
_house.setText(" House: " + arrayhpJobList.get(position).getHouse());
_username.setText(" Assigner: " + arrayhpJobList.get(position).getUsername());
_assigned.setText(" Assigned To: " + arrayhpJobList.get(position).getAssignment());
return view;
}
public void update(ArrayList<Homepage_ListView> results) {
arrayhpJobList = new ArrayList<>();
arrayhpJobList.addAll(results);
notifyDataSetChanged();
}
}
公共类管理_适配器扩展ArrayAdapter实现可过滤{
工作清单；
公共CardView _admin_CardView；
公共管理适配器（@NonNull上下文上下文，列表arrayhpJobList）{
超级（上下文，R.layout.cardwiew_admin，arrayhpJobList）；
this.arrayhpJobList=arrayhpJobList；
notifyDataSetChanged（）；
}
//**必须具有搜索功能**
@凌驾
public int getCount（）{//返回列表项的数量
返回arrayhpJobList.size（）；
}
@非空
@凌驾
公共视图getView（int位置，@Nullable视图convertView，@NonNull视图组父级）{
//充气布局和通道
View View=LayoutInflater.from（parent.getContext（））.flate（R.layout.cardwiew_admin，null，true）；
_admin\u cardwiew=view.findviewbyd（R.id.admin\u cardwiew）；
TextView _house=view.findViewById（R.id.house_AL）；
TextView\u username=view.findviewbyd（R.id.username\u AL）；
TextView\u assigned=view.findviewbyd（R.id.assigned\u AL）；
if（Admin.UserArrayList.get（position）.getStatus（）匹配（“1”）和&Admin.UserArrayList.get（position）.getConfirmation（）匹配（“0”）{
_admin_cardview.setCardBackgroundColor（0xFFFFFF8D）；
}
else if（Admin.UserArrayList.get（position.getStatus（）.matches）（“1”）&Admin.UserArrayList.get（position.getConfirmation（）.matches（“1”））{
_admin_cardview.setCardBackgroundColor（0xFFFA5D50）；
}
else if（Admin.UserArrayList.get（position.getConfirmation（）.matches（“2”））{
_admin_cardview.setCardBackgroundColor（0xFFCCFF90）；
}
否则{
_admin_cardview.setCardBackgroundColor（0xFFE7E7E7）；
}
_house.setText（“house:+arrayhpJobList.get（position.getHouse（））；
_username.setText（“Assigner:+arrayhpJobList.get（position.getUsername（））；
_assigned.setText（“assigned To:”+arrayhpJobList.get（position.getAssignment（））；
返回视图；
}
公共作废更新（ArrayList结果）{
arrayhpJobList=新的ArrayList（）；
arrayhpJobList.addAll（结果）；
notifyDataSetChanged（）；
}
}