删除USB附件权限对话框 [英] Remove USB Accessory permission dialog
问题描述
我正在使用USB附件的应用程序上工作。当我将设备连接到arduino时，它会请求USB许可，并且在默认使用对话框中具有复选框。当我选中并按OK时，它应该保存许可权并执行不要再问我了，但是每次我连接USB时都会要求获得许可。我想保存许可有什么方法可以保存？
I am working on an application which uses USB accessory.When I attach device to arduino it asks for usb permission and it has checkbox in dialog "use by default".When I checked and press ok then it should save permission and do not ask me again but it is asking for permission every time I attach USB.I want to save permission is there any way to save this?
我的代码看起来很像
@Override
public void onResume() {
super.onResume();
if (mInputStream != null && mOutputStream != null) {
// streams were not null");
return;
}
// streams were null");
UsbAccessory[] accessories = mUsbManager.getAccessoryList();
UsbAccessory accessory = (accessories == null ? null : accessories[0]);
if (accessory != null) {
if (mUsbManager.hasPermission(accessory)) {
openAccessory(accessory);
} else {
synchronized (mUsbReceiver) {
if (!mPermissionRequestPending) {
mUsbManager.requestPermission(accessory,
mPermissionIntent);
mPermissionRequestPending = true;
}
}
}
}
Android清单文件的外观
And Android manifest file looks
<activity
android:name="pkg.sarvajal.soochakdroid.Main"
android:label="@string/Home"
android:theme="@android:style/Theme.Translucent.NoTitleBar.Fullscreen"
android:screenOrientation="landscape">
<intent-filter>
<action android:name="android.hardware.usb.action.USB_ACCESSORY_ATTACHED" />
<action android:name="android.hardware.usb.action.USB_DEVICE_DETACHED" />
</intent-filter>
<meta-data
android:name="android.hardware.usb.action.USB_ACCESSORY_ATTACHED"
android:resource="@xml/accessory_filter" />
</activity>
附件过滤器就像
<?xml version="1.0" encoding="utf-8"?>
<resources>
<usb-accessory manufacturer="Manufacturer" model="Model" version="1.0" />
<usb-device vendor-id="0x0403" product-id="0x0403" />
</resources>
我的BroadcastReceiver代码
My BroadcastReceiver code
private final BroadcastReceiver mUsbReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (ACTION_USB_PERMISSION.equals(action)) {
synchronized (this) {
//UsbAccessory accessory = UsbManager.getAccessory(intent);
UsbAccessory accessory = (UsbAccessory) intent.getParcelableExtra(UsbManager.EXTRA_ACCESSORY);
if (intent.getBooleanExtra(
UsbManager.EXTRA_PERMISSION_GRANTED, false)) {
Flag_USB_Attached = true;
Flag_Count_USB_Attached = 0;
Flag_Count_USB_Restart_App = 0;
openAccessory(accessory);
String strdatetime =responce_date();
//sendSMS_background(phoneNumber, "USB Cable Connected at "+strdatetime);
} else {
// USB permission denied
}
}
} else if (UsbManager.ACTION_USB_ACCESSORY_DETACHED.equals(action)) {
//UsbAccessory accessory = UsbManager.getAccessory(intent);
UsbAccessory accessory = (UsbAccessory) intent.getParcelableExtra(UsbManager.EXTRA_ACCESSORY);
if (accessory != null && accessory.equals(mAccessory)) {
// accessory detached
Flag_USB_Attached = false;
Flag_Count_USB_Attached = 0;
closeAccessory();
String strdatetime =responce_date();
//sendSMS_background(phoneNumber, "Communication Stopped! \n USB Cable Disconnected at "+strdatetime);
//SMS_USB();
}
}
}
并进行设置附件代码
/ Setting up accessory
private void setupAccessory() {
//mUsbManager = UsbManager.getInstance(this);
mUsbManager = (UsbManager) getSystemService(Context.USB_SERVICE);
mPermissionIntent = PendingIntent.getBroadcast(this, 0, new Intent(
ACTION_USB_PERMISSION), 0);
IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);
filter.addAction(UsbManager.ACTION_USB_ACCESSORY_DETACHED);
registerReceiver(mUsbReceiver, filter);
if (getLastNonConfigurationInstance() != null) {
mAccessory = (UsbAccessory) getLastNonConfigurationInstance();
openAccessory(mAccessory);
}
}
// Opening Accessory Mode
private void openAccessory(UsbAccessory accessory) {
mFileDescriptor = mUsbManager.openAccessory(accessory);
if (mFileDescriptor != null) {
mAccessory = accessory;
FileDescriptor fd = mFileDescriptor.getFileDescriptor();
mInputStream = new FileInputStream(fd);
mOutputStream = new FileOutputStream(fd);
Thread thread = new Thread(null, this, "OpenAccessoryTest");
thread.start();
// Accessory opened
} else {
// failed to open accessory
}
}
// close Accessory
private void closeAccessory() {
try {
// T.cancel();
if (mFileDescriptor != null) {
mFileDescriptor.close();
}
} catch (IOException e) {
} finally {
mFileDescriptor = null;
mAccessory = null;
}
}
推荐答案
到 Android USB主机文档，您的应用程序有权访问设备，直到设备断开连接。 此问题提供了一种抑制权限对话框的解决方案。在清单文件中创建一个意图过滤器，并在xml文件中提供设备信息。这样可以使用广播接收器枚举设备。
According to the Android USB host documentation, your application has permission to access the device until the device is disconnected. This question provides a solution to suppress the permission dialog. Create an intent filter in your manifest file and provide the device information in an xml file. This would enable enumerating the device using a broadcast receiver.
另一个参考是此问题。后者是针对有根设备的，我还没有亲自尝试过。
Another reference is this question. The latter is meant for rooted devices and I haven't tried it personally.
编辑：
清单文件：我在清单文件中注册了我的广播接收器。
Manifest File: I register my Broadcast Receiver in the manifest file.
<receiver android:name="MyReceiver">
<intent-filter>
<action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
</intent-filter>
<meta-data android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED"
android:resource="@xml/device_filter" />
</receiver>
为了方便起见，我将广播接收器放在一个单独的类中：
For the sake of convenience, I have my Broadcast Receiver in a separate class:
public class PmrtReceiver extends BroadcastReceiver {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if(UsbManager.ACTION_USB_DEVICE_ATTACHED.equals(action)){
Toast.makeText(context, "Device Detected",Toast.LENGTH_LONG).show();
} else if(UsbManager.ACTION_USB_DEVICE_DETACHED.equals(action)){
Toast.makeText(context, "Device Detached",Toast.LENGTH_LONG).show();
}
}
};
我不必执行其他任何操作来禁止显示权限对话框。
I did not have to do anything else to suppress the permission dialog.
查看Android样本中的USB导弹启动器示例。您的设备过滤器应该是这样的：
Look into the USB Missile Launcher example from the Android Samples. Your device filtr should be something like this:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<usb-device vendor-id="1234" product-id="5678" />
</resources>
您将VID和PID作为十六进制数。
You have the VID and PID as hexadecimal numbers.
这篇关于删除USB附件权限对话框的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
