Android 连接USB弹窗出来USB相关选项

/frameworks/base/services/usb/java/com/android/server/usb/UsbDeviceManager.java

@Override

public void handleMessage(Message msg) {

switch (msg.what) {

case MSG_UPDATE_STATE:

mConnected = (msg.arg1 == 1);

mConfigured = (msg.arg2 == 1);

updateUsbNotification(false);

updateAdbNotification(false);

if (mBootCompleted) {

updateUsbStateBroadcastIfNeeded(getAppliedFunctions(mCurrentFunctions));

}

if ((mCurrentFunctions & UsbManager.FUNCTION_ACCESSORY) != 0) {

updateCurrentAccessory();

}

if (mBootCompleted) {

if (!mConnected && !hasMessages(MSG_ACCESSORY_MODE_ENTER_TIMEOUT)

&& !hasMessages(MSG_FUNCTION_SWITCH_TIMEOUT)) {

// restore defaults when USB is disconnected

if (!mScreenLocked

&& mScreenUnlockedFunctions != UsbManager.FUNCTION_NONE) {

setScreenUnlockedFunctions();

} else {

//*/add def mtp

setEnabledFunctions(UsbManager.FUNCTION_MTP, true);

/*/

setEnabledFunctions(UsbManager.FUNCTION_NONE, false);

//*/

}

} else {

//*/connect usb jump usb dialog activity

Intent intent2 = new Intent();

intent2.setClassName("com.android.settings", "com.android.settings.Settings$UsbDetailsActivity ");

intent2.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

mContext.startActivity(intent2);

//*/

}

updateUsbFunctions();

} else {

mPendingBootBroadcast = true;

}

break;

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