package com.joy.usbbroadcastreceiver; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.widget.Toast; public class MainActivity extends AppCompatActivity { private static final String TAG = "joy:"; private USBBroadcastReceiver usbBroadcastReceiver; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); IntentFilter intentFilter = new IntentFilter(); intentFilter.addAction("android.hardware.usb.action.USB_STATE"); usbBroadcastReceiver = new USBBroadcastReceiver(); registerReceiver(usbBroadcastReceiver, intentFilter); } @Override protected void onDestroy() { super.onDestroy(); if (usbBroadcastReceiver != null) { unregisterReceiver(usbBroadcastReceiver); } } class USBBroadcastReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { // TODO Auto-generated method stub if (intent.getAction().equals("android.hardware.usb.action.USB_STATE")) { if (intent.getExtras().getBoolean("connected")) { // usb 插入 Toast.makeText(MainActivity.this, "usb 插入", Toast.LENGTH_SHORT).show(); logi("usb 插入"); } else { // usb 拔出 Toast.makeText(MainActivity.this, "usb 拔出", Toast.LENGTH_SHORT).show(); logi("usb 拔出"); } } } } public void logi(String s) { Log.i(TAG, "joy99:" + s); } }