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How to check whether a headset is plugged into an Android device?
This example demonstrates how do I check whether a headset is plugged into an android device.
Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.
Step 2 − Add the following code to res/layout/activity_main.xml.
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center" android:orientation="vertical" tools:context=".MainActivity"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Detecting headphones plug In" /> </LinearLayout>
Step 3 − Add the following code to src/MainActivity.java
import androidx.appcompat.app.AppCompatActivity; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.widget.Toast; public class MainActivity extends AppCompatActivity { BroadcastReceiver broadcastReceiver; boolean Microphone_Plugged_in = false; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); broadcastReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { final String action = intent.getAction(); int iii; if (Intent.ACTION_HEADSET_PLUG.equals(action)) { iii = intent.getIntExtra("state", -1); if (iii == 0) { Microphone_Plugged_in = false; Toast.makeText(getApplicationContext(), "microphone not plugged in", Toast.LENGTH_LONG).show(); } if (iii == 1) { Microphone_Plugged_in = true; Toast.makeText(getApplicationContext(), "microphone plugged in", Toast.LENGTH_LONG).show(); } } } }; IntentFilter receiverFilter = new IntentFilter(Intent.ACTION_HEADSET_PLUG); registerReceiver(broadcastReceiver, receiverFilter); } }
Step 4 − Add the following code to androidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample"> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from the android studio, open one of your project's activity files and click the Run icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen &mius;
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