Created RecyclerView with CardView. Everything works, the data is set via the adapter, but I cannot read the text from the EditText when I click on the button. PS: for some reason all the properties of EditText through the debugger are shown as Null or -1. What could be the problem?
MainActivity.java
package com.example.nik.greenery; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothSocket; import android.content.DialogInterface; import android.content.Intent; import android.os.Bundle; import android.support.design.widget.NavigationView; import android.support.v4.view.GravityCompat; import android.support.v4.widget.DrawerLayout; import android.support.v7.app.ActionBarDrawerToggle; import android.support.v7.app.AlertDialog; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.support.v7.widget.Toolbar; import android.util.Log; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.Button; import android.widget.EditText; import java.util.ArrayList; import java.util.List; public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener { BluetoothSocket clientSocket; ArrayList<String> nameDeviceList = new ArrayList<>(); BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); EditText nameDevice; Button buttonApply; /* CircularProgressBar tempProgressBar = (CircularProgressBar)findViewById(R.id.progress_bar_temperature); CircularProgressBar humProgressBar = (CircularProgressBar)findViewById(R.id.progress_bar_humidyty);*/ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); ActionBarDrawerToggle toggle = new ActionBarDrawerToggle( this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close); drawer.addDrawerListener(toggle); toggle.syncState(); NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view); navigationView.setNavigationItemSelectedListener(this); RecyclerView rv = (RecyclerView)findViewById(R.id.rv); rv.setHasFixedSize(true); List<Object> sensorsDataList = new ArrayList<>(); LinearLayoutManager llm = new LinearLayoutManager(MainActivity.this); rv.setLayoutManager(llm); sensorsDataList.add(new SensorsData("67", "67", "NaN", "NaN")); sensorsDataList.add(new SensorsData("67", "67", "NaN", "NaN")); //sensorsDataList.add(new SensorsData("100", "100", "NaN", "NaN")); rv.setAdapter(new ComplexRecyclerViewAdapter(sensorsDataList)); LayoutInflater inflater = this.getLayoutInflater(); View view = inflater.inflate(R.layout.name_device, null); nameDevice = view.findViewById(R.id.editNameDevice); Log.d("Text", nameDevice.getText().toString()); buttonApply = view.findViewById(R.id.buttonApply); startActivityForResult(new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE), 0); if (bluetoothAdapter == null) { new AlertDialog.Builder(this) .setTitle("Not compatible") .setMessage("Your phone does not support Bluetooth") .setPositiveButton("Exit", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { System.exit(0); } }) .setIcon(android.R.drawable.ic_dialog_alert) .show(); } } @Override public void onBackPressed() { DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); if (drawer.isDrawerOpen(GravityCompat.START)) { drawer.closeDrawer(GravityCompat.START); } else { super.onBackPressed(); } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); //noinspection SimplifiableIfStatement if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } @SuppressWarnings("StatementWithEmptyBody") @Override public boolean onNavigationItemSelected(MenuItem item) { // Handle navigation view item clicks here. int id = item.getItemId(); if (id == R.id.nav_sensor) { // Handle the camera action } else if (id == R.id.nav_manage) { } else if (id == R.id.nav_hand_mode) { } else if (id == R.id.nav_plots) { } DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); drawer.closeDrawer(GravityCompat.START); return true; } public void apply_click(View view) { Log.d("HELLO", "HELLO"); String name = nameDevice.getText().toString(); Log.d("name", name); } } ComplexRecycleViewAdapter.java
package com.example.nik.greenery; import android.support.annotation.NonNull; import android.support.v7.widget.RecyclerView; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import java.util.List; /** * Created by Nik on 30.04.2018. */ public class ComplexRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> { // The items to display in your RecyclerView private List<Object> items; private final int NAME_DEVICE = 0, HUM_AND_TEMP = 1; // Provide a suitable constructor (depends on the kind of dataset) public ComplexRecyclerViewAdapter(List<Object> items) { this.items = items; } @NonNull @Override public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) { RecyclerView.ViewHolder viewHolder = null; LayoutInflater inflater = LayoutInflater.from(parent.getContext()); switch (viewType){ case NAME_DEVICE: View v1 = inflater.inflate(R.layout.name_device, parent, false); viewHolder = new NameDeviceViewHolder(v1); break; case HUM_AND_TEMP: View v2 = inflater.inflate(R.layout.temperature_and_hum, parent,false); viewHolder = new TempHumViewHolder(v2); break; default: View v3 = inflater.inflate(R.layout.name_device, parent, false); viewHolder = new NameDeviceViewHolder(v3); break; } return viewHolder; } @Override public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) { switch (holder.getItemViewType()){ case NAME_DEVICE: NameDeviceViewHolder vh1 = (NameDeviceViewHolder) holder; configureViewHolderNameDevice(vh1, position); break; case HUM_AND_TEMP: TempHumViewHolder vh2 = (TempHumViewHolder) holder; configureViewHolderTempHum(vh2, position); break; default: break; } } private void configureViewHolderTempHum(TempHumViewHolder vh2, int position) { SensorsData sensorsData = (SensorsData)items.get(position); if (sensorsData != null){ vh2.getHum().setText(sensorsData.getHumAir()); vh2.getHumProgressBar().setProgress(Float.parseFloat(sensorsData.getHumAir())); vh2.getTemp().setText(sensorsData.getTemp()); vh2.getTempProgressBar().setProgress(Float.parseFloat(sensorsData.getTemp())); } } private void configureViewHolderNameDevice(NameDeviceViewHolder vh1, int position) { } //Returns the view type of the item at position for the purposes of view recycling. @Override public int getItemViewType(int position) { Log.d("Position", String.valueOf(position)); if (position == 0) { return NAME_DEVICE; } else if (position == 1) { return HUM_AND_TEMP; } return -1; } @Override public int getItemCount() { return this.items.size(); } } NameDeviceViewHolder.java
package com.example.nik.greenery; import android.support.v7.widget.RecyclerView; import android.view.View; import android.widget.Button; import android.widget.EditText; /** * Created by Nik on 30.04.2018. */ public class NameDeviceViewHolder extends RecyclerView.ViewHolder { public NameDeviceViewHolder(View itemView) { super(itemView); } } TempHumViewHolder.java
package com.example.nik.greenery; import android.support.v7.widget.RecyclerView; import android.view.View; import android.widget.TextView; import com.budiyev.android.circularprogressbar.CircularProgressBar; /** * Created by Nik on 30.04.2018. */ public class TempHumViewHolder extends RecyclerView.ViewHolder { private CircularProgressBar tempProgressBar; private CircularProgressBar humProgressBar; private TextView nameAir; private TextView temp; private TextView hum; private TextView tempText; private TextView humText; public TempHumViewHolder(View itemView) { super(itemView); tempProgressBar = itemView.findViewById(R.id.progress_bar_temperature); humProgressBar = itemView.findViewById(R.id.progress_bar_humidyty); nameAir = itemView.findViewById(R.id.air); temp = itemView.findViewById(R.id.temp_text); hum = itemView.findViewById(R.id.hum_text); tempText = itemView.findViewById(R.id.temperature); humText = itemView.findViewById(R.id.humidity); } public CircularProgressBar getTempProgressBar(){ return this.tempProgressBar; } public CircularProgressBar getHumProgressBar(){ return this.humProgressBar; } public TextView getNameAir(){ return this.nameAir; } public TextView getTemp(){ return this.temp; } public TextView getHum(){ return this.hum; } public TextView getTempText(){ return this.tempText; } public TextView getHumText(){ return this.humText; } public void setHumProgressBar(CircularProgressBar humProgressBar) { this.humProgressBar = humProgressBar; } public void setNameAir(TextView nameAir) { this.nameAir = nameAir; } public void setTempProgressBar(CircularProgressBar tempProgressBar) { this.tempProgressBar = tempProgressBar; } public void setHum(TextView hum) { this.hum = hum; } public void setTemp(TextView temp) { this.temp = temp; } public void setHumText(TextView humText) { this.humText = humText; } public void setTempText(TextView tempText) { this.tempText = tempText; } } temperature_and_hum.xml
<?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:orientation="vertical" android:layout_width="match_parent" android:layout_height="wrap_content" android:paddingLeft="16dp" android:paddingRight="16dp" android:paddingBottom="12dp"> <android.support.constraint.ConstraintLayout android:layout_width="match_parent" android:layout_height="match_parent"> <android.support.v7.widget.CardView android:id="@+id/card_view" style="@style/MyCardViewStyle" android:layout_width="329dp" android:layout_height="235dp" android:layout_gravity="center" android:layout_marginEnd="8dp" android:layout_marginStart="8dp"> <android.support.constraint.ConstraintLayout android:layout_width="match_parent" android:layout_height="match_parent"> <com.budiyev.android.circularprogressbar.CircularProgressBar android:id="@+id/progress_bar_temperature" android:layout_width="129dp" android:layout_height="127dp" android:layout_marginTop="40dp" app:animateProgress="true" app:backgroundStrokeColor="#ff3f51b5" app:backgroundStrokeWidth="2dp" app:drawBackgroundStroke="false" app:foregroundStrokeCap="butt" app:foregroundStrokeColor="#ffff4081" app:foregroundStrokeWidth="3dp" app:indeterminate="false" app:indeterminateMinimumAngle="45" app:indeterminateRotationAnimationDuration="1200" app:indeterminateSweepAnimationDuration="600" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" app:maximum="100" app:progress="50" app:progressAnimationDuration="100" app:startAngle="270" tools:ignore="MissingConstraints" /> <TextView android:id="@+id/temp_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="8dp" android:layout_marginEnd="8dp" android:layout_marginStart="8dp" android:layout_marginTop="8dp" android:gravity="center" android:text="@string/nan" android:textSize="24sp" app:layout_constraintBottom_toBottomOf="@+id/progress_bar_temperature" app:layout_constraintEnd_toEndOf="@+id/progress_bar_temperature" app:layout_constraintStart_toStartOf="@+id/progress_bar_temperature" app:layout_constraintTop_toTopOf="@+id/progress_bar_temperature" app:layout_constraintVertical_bias="0.506" tools:ignore="MissingConstraints" /> <TextView android:id="@+id/temperature" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginEnd="8dp" android:layout_marginStart="8dp" android:text="@string/temperature" android:textSize="18sp" app:layout_constraintEnd_toEndOf="@+id/progress_bar_temperature" app:layout_constraintStart_toStartOf="@+id/progress_bar_temperature" app:layout_constraintTop_toBottomOf="@+id/progress_bar_temperature" tools:ignore="MissingConstraints" /> <com.budiyev.android.circularprogressbar.CircularProgressBar android:id="@+id/progress_bar_humidyty" android:layout_width="129dp" android:layout_height="130dp" android:layout_marginTop="40dp" app:animateProgress="true" app:backgroundStrokeColor="#ff3f51b5" app:backgroundStrokeWidth="2dp" app:drawBackgroundStroke="false" app:foregroundStrokeCap="butt" app:foregroundStrokeColor="#ffff4081" app:foregroundStrokeWidth="3dp" app:indeterminate="false" app:indeterminateMinimumAngle="45" app:indeterminateRotationAnimationDuration="1200" app:indeterminateSweepAnimationDuration="600" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintTop_toTopOf="parent" app:maximum="100" app:progress="50" app:progressAnimationDuration="100" app:startAngle="270" tools:ignore="MissingConstraints"/> <TextView android:id="@+id/hum_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="8dp" android:layout_marginEnd="8dp" android:layout_marginStart="8dp" android:layout_marginTop="8dp" android:gravity="center" android:text="@string/nan" android:textSize="24sp" app:layout_constraintBottom_toBottomOf="@+id/progress_bar_humidyty" app:layout_constraintEnd_toEndOf="@+id/progress_bar_humidyty" app:layout_constraintStart_toStartOf="@+id/progress_bar_humidyty" app:layout_constraintTop_toTopOf="@+id/progress_bar_humidyty" /> <TextView android:id="@+id/humidity" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginEnd="8dp" android:layout_marginStart="8dp" android:text="@string/humidity" android:textSize="18sp" app:layout_constraintEnd_toEndOf="@+id/progress_bar_humidyty" app:layout_constraintStart_toStartOf="@+id/progress_bar_humidyty" app:layout_constraintTop_toBottomOf="@+id/progress_bar_humidyty" tools:ignore="MissingConstraints" /> <TextView android:id="@+id/air" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/name_air" android:textSize="30sp" tools:layout_editor_absoluteX="0dp" tools:layout_editor_absoluteY="0dp" tools:ignore="MissingConstraints" /> </android.support.constraint.ConstraintLayout> </android.support.v7.widget.CardView> </android.support.constraint.ConstraintLayout> </LinearLayout> name_device.xml
<?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:orientation="vertical" android:layout_width="match_parent" android:layout_height="wrap_content" android:paddingLeft="16dp" android:paddingRight="16dp" android:paddingBottom="12dp"> <android.support.constraint.ConstraintLayout android:layout_width="match_parent" android:layout_height="match_parent"> <android.support.v7.widget.CardView android:id="@+id/card_view" style="@style/MyCardViewStyle" android:layout_width="334dp" android:layout_height="121dp" android:layout_gravity="center" android:layout_marginEnd="8dp" android:layout_marginStart="8dp" android:layout_marginTop="8dp"> <android.support.constraint.ConstraintLayout android:layout_width="match_parent" android:layout_height="match_parent"> <EditText android:id="@+id/editNameDevice" android:layout_width="match_parent" android:layout_height="50dp" android:hint="@string/name_greenery" /> <Button android:id="@+id/buttonApply" android:layout_width="match_parent" android:layout_height="46dp" android:layout_below="@id/editNameDevice" android:layout_marginTop="48dp" android:onClick="apply_click" android:text="@string/apply" app:layout_constraintTop_toTopOf="parent" tools:ignore="MissingConstraints" tools:layout_editor_absoluteX="0dp" /> </android.support.constraint.ConstraintLayout> </android.support.v7.widget.CardView> </android.support.constraint.ConstraintLayout> </LinearLayout>