广播监听USB和外设插拔状态

直入正题，看代码

//USB插入监听 添加广播过滤意图
IntentFilter filter = new IntentFilter();
filter.addAction("android.hardware.usb.action.USB_DEVICE_ATTACHED");
filter.addAction("android.hardware.usb.action.USB_DEVICE_DETACHED");
filter.addAction("android.hardware.usb.action.USB_STATE");
registerReceiver(mUsbBroadcastReceiver, filter);

//BOOLEAN为成员变量，自己随便起一个就行
BroadcastReceiver mUsbBroadcastReceiver = new BroadcastReceiver() {

@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
//判断外设
if (action.equals("android.hardware.usb.action.USB_DEVICE_ATTACHED")) {//外设已经连接
mIvUsb.setVisibility(View.VISIBLE);
}
if (action.equals("android.hardware.usb.action.USB_DEVICE_DETACHED")) {
if (BOOLEAN) {//外设已经移除
mIvUsb.setVisibility(View.GONE);
}
}
//判断存储usb
if (action.equals("android.hardware.usb.action.USB_STATE")) {
boolean connected = intent.getExtras().getBoolean("connected");
if (connected) {//USB 已经连接
mIvUsb.setVisibility(View.VISIBLE);
} else {
if (BOOLEAN) {//USB 断开
mIvUsb.setVisibility(View.GONE);
}

}
}
//判断耳机
if (action.equals("android.intent.action.HEADSET_PLUG")) {
int intExtra = intent.getIntExtra("state", 0);
// state --- 0代表拔出，1代表插入
// name--- 字符串，代表headset的类型。
// microphone -- 1代表这个headset有麦克风，0则没有
// int i=intent.getIntExtra("",0);
if (intExtra == 0) {
if (BOOLEAN) {
//拔出耳机
}
}
if (intExtra == 1) {
//耳机插入
int intType = intent.getIntExtra("microphone", 0);
if (intType == 0) {

//没有麦克风
}
if (intType == 1) {

//有话筒
}
}

}
BOOLEAN = true;
}

};

第二个是发送广播到服务器

private void setBroadCast(long restflow) {
Intent intent = new Intent();
intent.setAction("realtimeflow");
intent.putExtra("restflow", restflow);
sendBroadcastAsUser(intent, UserHandle.ALL);
// UserHandle.ALL只有在源码情况下才能编译通过，在AS上无法直接编译
}

最后：验证自己写的广播接收器能否接收到广播

ctrl+r进入命令行界面后按照如下格式发送广播
"adb shell am broadcast -a 你的广播 "

adb shell am broadcast -a "a_test_broadcast"