// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.espressif.ui.activities;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.text.TextUtils;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.AdapterView;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import com.espressif.AppConstants;
import com.espressif.wifi_provisioning.R;
import com.espressif.provisioning.ESPConstants;
import com.espressif.provisioning.ESPProvisionManager;
import com.espressif.provisioning.WiFiAccessPoint;
import com.espressif.provisioning.listeners.WiFiScanListener;
import com.espressif.ui.adapters.WiFiListAdapter;
import com.google.android.material.textfield.TextInputLayout;
import java.util.ArrayList;
public class WiFiScanActivity extends AppCompatActivity {
private static final String TAG = WiFiScanActivity.class.getSimpleName();
private Handler handler;
private ImageView ivRefresh;
private ListView wifiListView;
private ProgressBar progressBar;
private WiFiListAdapter adapter;
private ArrayList<WiFiAccessPoint> wifiAPList;
private ESPProvisionManager provisionManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_wifi_scan_list);
Toolbar toolbar = findViewById(R.id.toolbar);
toolbar.setTitle(R.string.title_activity_wifi_scan_list);
setSupportActionBar(toolbar);
ivRefresh = findViewById(R.id.btn_refresh);
wifiListView = findViewById(R.id.wifi_ap_list);
progressBar = findViewById(R.id.wifi_progress_indicator);
progressBar.setVisibility(View.VISIBLE);
wifiAPList = new ArrayList<>();
handler = new Handler();
provisionManager = ESPProvisionManager.getInstance(getApplicationContext());
String deviceName = provisionManager.getEspDevice().getDeviceName();
String wifiMsg = String.format(getString(R.string.setup_instructions), deviceName);
TextView tvWifiMsg = findViewById(R.id.wifi_message);
tvWifiMsg.setText(wifiMsg);
ivRefresh.setOnClickListener(refreshClickListener);
adapter = new WiFiListAdapter(this, R.id.tv_wifi_name, wifiAPList);
// Assign adapter to ListView
wifiListView.setAdapter(adapter);
wifiListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int pos, long l) {
Log.d(TAG, "Device to be connected -" + wifiAPList.get(pos));
String ssid = wifiAPList.get(pos).getWifiName();
if (ssid.equals(getString(R.string.join_other_network))) {
askForNetwork(wifiAPList.get(pos).getWifiName(), wifiAPList.get(pos).getSecurity());
} else if (wifiAPList.get(pos).getSecurity() == ESPConstants.WIFI_OPEN) {
goForProvisioning(wifiAPList.get(pos).getWifiName(), "");
} else {
askForNetwork(wifiAPList.get(pos).getWifiName(), wifiAPList.get(pos).getSecurity());
}
}
});
wifiListView.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
@Override
public void onLayoutChange(View v, int left, int top, int right, int bottom, int oldLeft, int oldTop, int oldRight, int oldBottom) {
}
});
startWifiScan();
}
@Override
public void onBackPressed() {
provisionManager.getEspDevice().disconnectDevice();
super.onBackPressed();
}
private void startWifiScan() {
Log.d(TAG, "Start Wi-Fi Scan");
wifiAPList.clear();
runOnUiThread(new Runnable() {
@Override
public void run() {
updateProgressAndScanBtn(true);
}
});
handler.postDelayed(stopScanningTask, 15000);
provisionManager.getEspDevice().scanNetworks(new WiFiScanListener() {
@Override
public void onWifiListReceived(final ArrayList<WiFiAccessPoint> wifiList) {
runOnUiThread(new Runnable() {
@Override
public void run() {
wifiAPList.addAll(wifiList);
completeWifiList();
}
});
}
@Override
public void onWiFiScanFailed(Exception e) {
// TODO
Log.e(TAG, "onWiFiScanFailed");
e.printStackTrace();
runOnUiThread(new Runnable() {
@Override
public void run() {
updateProgressAndScanBtn(false);
Toast.makeText(WiFiScanActivity.this, "Failed to get Wi-Fi scan list", Toast.LENGTH_LONG).show();
}
});
}
});
}
private void completeWifiList() {
// Add "Join network" Option as a list item
WiFiAccessPoint wifiAp = new WiFiAccessPoint();
wifiAp.setWifiName(getString(R.string.join_other_network));
wifiAPList.add(wifiAp);
updateProgressAndScanBtn(false);
handler.removeCallbacks(stopScanningTask);
}
private void askForNetwork(final String ssid, final int authMode) {
final AlertDialog.Builder builder = new AlertDialog.Builder(this, R.style.AlertDialogTheme);
LayoutInflater inflater = this.getLayoutInflater();
final View dialogView = inflater.inflate(R.layout.dialog_wifi_network, null);
builder.setView(dialogView);
final EditText etSsid = dialogView.findViewById(R.id.et_ssid);
final EditText etPassword = dialogView.findViewById(R.id.et_password);
if (ssid.equals(getString(R.string.join_other_network))) {
builder.setTitle(R.string.dialog_title_network_info);
} else {
builder.setTitle(ssid);
etSsid.setVisibility(View.GONE);
}
builder.setPositiveButton(R.string.btn_provision, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
String password = etPassword.getText().toString();
if (ssid.equals(getString(R.string.join_other_network))) {
String networkName = etSsid.getText().toString();
if (TextUtils.isEmpty(networkName)) {
etSsid.setError(getString(R.string.error_ssid_empty));
} else {
dialog.dismiss();
goForProvisioning(networkName, password);
}
} else {
if (TextUtils.isEmpty(password)) {
if (authMode != ESPConstants.WIFI_OPEN) {
TextInputLayout passwordLayout = dialogView.findViewById(R.id.layout_password);
passwordLayout.setError(getString(R.string.error_password_empty));
} else {
dialog.dismiss();
goForProvisioning(ssid, password);
}
} else {
if (authMode == ESPConstants.WIFI_OPEN) {
password = "";
}
dialog.dismiss();
goForProvisioning(ssid, password);
}
}
}
});
builder.setNegativeButton(R.string.btn_cancel, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
AlertDialog alertDialog = builder.create();
alertDialog.show();
}
private void goForProvisioning(String ssid, String password) {
finish();
Intent provisionIntent = new Intent(getApplicationContext(), ProvisionActivity.class);
provisionIntent.putExtras(getIntent());
provisionIntent.putExtra(AppConstants.KEY_WIFI_SSID, ssid);
provisionIntent.putExtra(AppConstants.KEY_WIFI_PASSWORD, password);
startActivity(provisionIntent);
}
private View.OnClickListener refreshClickListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
startWifiScan();
}
};
private Runnable stopScanningTask = new Runnable() {
@Override
public void run() {
updateProgressAndScanBtn(false);
}
};
/**
* This method will update UI (Scan button enable / disable and progressbar visibility)
*/
private void updateProgressAndScanBtn(boolean isScanning) {
if (isScanning) {
progressBar.setVisibility(View.VISIBLE);
wifiListView.setVisibility(View.GONE);
ivRefresh.setVisibility(View.GONE);
} else {
progressBar.setVisibility(View.GONE);
wifiListView.setVisibility(View.VISIBLE);
ivRefresh.setVisibility(View.VISIBLE);
adapter.notifyDataSetChanged();
}
}
}
