src/de/cweiske/headphoneindicator/MainActivity.java

   1 package de.cweiske.headphoneindicator;
   2
   3 import android.Manifest;
   4 import android.app.Activity;
   5 import android.app.NotificationChannel;
   6 import android.app.NotificationManager;
   7 import android.content.BroadcastReceiver;
   8 import android.content.Context;
   9 import android.content.Intent;
  10 import android.content.IntentFilter;
  11 import android.content.pm.PackageManager;
  12 import android.hardware.usb.UsbManager;
  13 import android.os.Build;
  14 import android.os.Bundle;
  15 import android.widget.ImageView;
  16 import android.widget.TextView;
  17
  18 /**
  19  * Shows headphone icon and text, and starts the background service
  20  *
  21  * @author Christian Weiske, cweiske@cweiske.de
  22  */
  23 public class MainActivity extends Activity {
  24     BroadcastReceiver headsetPlugReceiver = new BroadcastReceiver() {
  25         @Override
  26         public void onReceive(Context context, Intent intent) {
  27             PlugIntentHelper plugIntentHelper = new PlugIntentHelper(context);
  28             PlugInfo plugInfo = plugIntentHelper.getPlugInfo(intent);
  29             if (plugInfo.isAudioEvent) {
  30                 setPlugged(plugInfo.isPlugged, plugInfo.hasMicrophone);
  31             }
  32         }
  33     };
  34
  35     @Override
  36     protected void onCreate(Bundle savedInstanceState) {
  37         super.onCreate(savedInstanceState);
  38         registerNotificationChannel();
  39         requestNotificationPermission();
  40
  41         setContentView(R.layout.activity_main);
  42         startService(new Intent(this, BackgroundService.class));
  43     }
  44
  45     @Override
  46     protected void onResume() {
  47         super.onResume();
  48         IntentFilter filter = new IntentFilter(Intent.ACTION_HEADSET_PLUG);
  49         filter.addAction(UsbManager.ACTION_USB_DEVICE_ATTACHED);
  50         filter.addAction(UsbManager.ACTION_USB_DEVICE_DETACHED);
  51
  52         registerReceiver(this.headsetPlugReceiver, filter);
  53     }
  54
  55     @Override
  56     protected void onPause() {
  57         super.onPause();
  58         this.unregisterReceiver(this.headsetPlugReceiver);
  59     }
  60
  61     public void setPlugged(boolean plugged, boolean microphone)
  62     {
  63         ImageView view = (ImageView) findViewById(R.id.image);
  64         TextView label = (TextView) findViewById(R.id.label);
  65         if (plugged) {
  66             if (microphone) {
  67                 view.setImageResource(R.drawable.headset_w);
  68                 label.setText(R.string.plugged_headset);
  69             } else {
  70                 view.setImageResource(R.drawable.headphones_w);
  71                 label.setText(R.string.plugged_headphones);
  72             }
  73         } else {
  74             view.setImageResource(0);
  75             label.setText(R.string.unplugged);
  76         }
  77     }
  78
  79     private void registerNotificationChannel() {
  80         // Create the NotificationChannel, but only on API 26+ because
  81         // the NotificationChannel class is not in the Support Library.
  82         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
  83             return;
  84         }
  85
  86         CharSequence name = getString(R.string.channel_name);
  87         String description = getString(R.string.channel_description);
  88         NotificationChannel channel = new NotificationChannel(
  89             NotificationReceiver.CHANNEL, name,
  90             //low = no sound
  91             NotificationManager.IMPORTANCE_LOW
  92         );
  93         channel.setDescription(description);
  94
  95         NotificationManager notificationManager = getSystemService(NotificationManager.class);
  96         notificationManager.createNotificationChannel(channel);
  97     }
  98
  99     private void requestNotificationPermission() {
 100         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU) {
 101             return;
 102         }
 103
 104         if (checkSelfPermission(Manifest.permission.POST_NOTIFICATIONS) == PackageManager.PERMISSION_GRANTED) {
 105             return;
 106         }
 107         requestPermissions(new String[] {Manifest.permission.POST_NOTIFICATIONS}, 0);
 108     }
 109 }