android.hardware.usb.UsbDeviceConnection#close ( )源码实例Demo

下面列出了android.hardware.usb.UsbDeviceConnection#close ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： yubikit-android 文件： UsbSession.java

@Override
public @NonNull
Iso7816Connection openIso7816Connection() throws IOException {
    UsbInterface ccidInterface = getInterface(UsbConstants.USB_CLASS_CSCID);
    if (ccidInterface == null) {
        throw new IOException("No CCID interface found!");
    }
    Pair<UsbEndpoint, UsbEndpoint> endpointPair = findEndpoints(ccidInterface, UsbConstants.USB_ENDPOINT_XFER_BULK);
    if (endpointPair.first == null || endpointPair.second == null) {
        throw new IOException("Unable to find endpoints!");
    }

    UsbDeviceConnection connection = openConnection();
    if (connection == null) {
        throw new IOException("exception in UsbManager.openDevice");
    }

    if (!connection.claimInterface(ccidInterface, true)) {
        connection.close();
        throw new IOException("Interface couldn't be claimed");
    }

    return new UsbIso7816Connection(connection, ccidInterface, endpointPair.first, endpointPair.second);
}

源代码2 项目： yubikit-android 文件： UsbSession.java

/**
 * Creates and starts session for communication with yubikey using HID interface
 * @return session for communication with yubikey (supported over USB only)
 * @throws IOException if Keyboard HID interface or endpoints are not found
 */
public @NonNull
UsbHidConnection openHidKeyboardConnection() throws IOException {
    UsbInterface hidInterface = getInterface(UsbConstants.USB_CLASS_HID);
    if (hidInterface == null) {
        throw new IOException("No HID interface found");
    }

    if (hidInterface.getInterfaceSubclass() != UsbConstants.USB_INTERFACE_SUBCLASS_BOOT) {
        throw new IOException("No expected HID interface");
    }

    UsbDeviceConnection connection = openConnection();
    if (connection == null) {
        throw new IOException("exception in UsbManager.openDevice");
    }

    if (!connection.claimInterface(hidInterface, true)) {
        connection.close();
        throw new IOException("Interface couldn't be claimed");
    }

    return new UsbHidConnection(connection, hidInterface);
}

源代码3 项目： astrobee_android 文件： MainActivity.java

protected void setupUsb(UsbDevice device) {
    UsbInterface inf = device.getInterface(0);
    UsbDeviceConnection conn = mUsbManager.openDevice(device);
    if (conn == null) {
        Log.wtf("MainActivity", "unable to open device?");
        return;
    }

    if (!conn.claimInterface(inf, true)) {
        conn.close();
        Log.wtf("MainActivity", "unable to claim interface!");
        return;
    }

    mBlinkDevice = device;
    mBlinkConn = conn;
}

源代码4 项目： astrobee_android 文件： MainActivity.java

protected void setupUsb(UsbDevice device) {
    UsbInterface inf = device.getInterface(0);
    UsbDeviceConnection conn = mUsbManager.openDevice(device);
    if (conn == null) {
        Log.wtf("MainActivity", "unable to open device?");
        return;
    }

    if (!conn.claimInterface(inf, true)) {
        conn.close();
        Log.wtf("MainActivity", "unable to claim interface!");
        return;
    }

    mBlinkDevice = device;
    mBlinkConn = conn;
}

源代码5 项目： libcommon 文件： UsbDeviceInfo.java

/**
 * USB機器情報(ベンダー名・製品名・バージョン・シリアル等)を取得する
 * @param manager
 * @param device
 * @param out
 * @return
 */
@SuppressLint("NewApi")
public static UsbDeviceInfo getDeviceInfo(
	@NonNull final UsbManager manager,
	@Nullable final UsbDevice device, @Nullable final UsbDeviceInfo out) {

	final UsbDeviceConnection connection
		= (device != null && manager.hasPermission(device))
			? manager.openDevice(device) : null;

	try {
		return getDeviceInfo(connection, device, out);
	} finally {
		if (connection != null) {
			connection.close();
		}
	}
}

源代码6 项目： astrobee_android 文件： MainActivity.java

private void performUsbPermissionCallback(final UsbDevice device) {
    if (mUsbHandler.getLooper().getThread() != Thread.currentThread()) {
        mUsbHandler.post(new Runnable() {
            @Override
            public void run() {
                performUsbPermissionCallback(device);
            }
        });
        return;
    }

    if (mPicoflexx != null) {
        Log.d(TAG, "Already have a picoflexx");
        return;
    }

    UsbDeviceConnection conn = mUsbManager.openDevice(device);
    Log.i(TAG, "USB Device: " + device.getDeviceName() + ", fd: " + conn.getFileDescriptor());

    if (!openPicoflexx(conn.getFileDescriptor())) {
        Log.e(TAG, "error initializing the picoflexx");
        mUiHandler.obtainMessage(WHAT_STATE, STATE_ERROR, R.string.error_initializing)
                .sendToTarget();
        conn.close();
        return;
    }

    mConn = conn;
    mPicoflexx = device;

    final int width = getMaxWidth();
    final int height = getMaxHeight();

    mCloud.setWidth(width);
    mCloud.setHeight(height);
    mCloud.setRowStep(width * 12);

    mUiHandler.obtainMessage(WHAT_STATE, STATE_IDLE, -1).sendToTarget();
}

源代码7 项目： libcommon 文件： USBMonitor.java

/**
 * デバイスを閉じる
 * Java内でインターフェースをopenして使う時は開いているインターフェースも閉じる
 */
public void close() {
	if (DEBUG) Log.i(TAG, "UsbControlBlock#close:");

	UsbDeviceConnection connection;
	synchronized (this) {
		connection = mConnection;
		mConnection = null;
	}
	if (connection != null) {
		// 2015/01/06 closeしてからonDisconnectを呼び出すように変更
		// openしているinterfaceが有れば閉じる XXX Java側でインターフェースを使う時
		final int n = mInterfaces.size();
		for (int i = 0; i < n; i++) {
			final SparseArray<UsbInterface> intfs = mInterfaces.valueAt(i);
			if (intfs != null) {
				final int m = intfs.size();
				for (int j = 0; j < m; j++) {
					final UsbInterface intf = intfs.valueAt(j);
					connection.releaseInterface(intf);
				}
				intfs.clear();
			}
		}
		mInterfaces.clear();
		connection.close();
		final USBMonitor monitor = getMonitor();
		final UsbDevice device = getDevice();
		if ((monitor != null) && (device != null)) {
			monitor.callOnDisconnect(device, this);
		}
	}
}

源代码8 项目： AndroidUSBCamera 文件： USBMonitor.java

/**
 * ベンダー名・製品名・バージョン・シリアルを取得する
 * @param manager
 * @param device
 * @param _info
 * @return
 */
@TargetApi(Build.VERSION_CODES.M)
public static UsbDeviceInfo updateDeviceInfo(final UsbManager manager, final UsbDevice device, final UsbDeviceInfo _info) {
	final UsbDeviceInfo info = _info != null ? _info : new UsbDeviceInfo();
	info.clear();

	if (device != null) {
		if (BuildCheck.isLollipop()) {
			info.manufacturer = device.getManufacturerName();
			info.product = device.getProductName();
			info.serial = device.getSerialNumber();
		}
		if (BuildCheck.isMarshmallow()) {
			info.usb_version = device.getVersion();
		}
		if ((manager != null) && manager.hasPermission(device)) {
			final UsbDeviceConnection connection = manager.openDevice(device);
			if(connection == null) {
				return null;
			}
			final byte[] desc = connection.getRawDescriptors();

			if (TextUtils.isEmpty(info.usb_version)) {
				info.usb_version = String.format("%x.%02x", ((int)desc[3] & 0xff), ((int)desc[2] & 0xff));
			}
			if (TextUtils.isEmpty(info.version)) {
				info.version = String.format("%x.%02x", ((int)desc[13] & 0xff), ((int)desc[12] & 0xff));
			}
			if (TextUtils.isEmpty(info.serial)) {
				info.serial = connection.getSerial();
			}

			final byte[] languages = new byte[256];
			int languageCount = 0;
			// controlTransfer(int requestType, int request, int value, int index, byte[] buffer, int length, int timeout)
			try {
				int result = connection.controlTransfer(
					USB_REQ_STANDARD_DEVICE_GET, // USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_DEVICE
    				USB_REQ_GET_DESCRIPTOR,
    				(USB_DT_STRING << 8) | 0, 0, languages, 256, 0);
				if (result > 0) {
        			languageCount = (result - 2) / 2;
				}
				if (languageCount > 0) {
					if (TextUtils.isEmpty(info.manufacturer)) {
						info.manufacturer = getString(connection, desc[14], languageCount, languages);
					}
					if (TextUtils.isEmpty(info.product)) {
						info.product = getString(connection, desc[15], languageCount, languages);
					}
					if (TextUtils.isEmpty(info.serial)) {
						info.serial = getString(connection, desc[16], languageCount, languages);
					}
				}
			} finally {
				connection.close();
			}
		}
		if (TextUtils.isEmpty(info.manufacturer)) {
			info.manufacturer = USBVendorId.vendorName(device.getVendorId());
		}
		if (TextUtils.isEmpty(info.manufacturer)) {
			info.manufacturer = String.format("%04x", device.getVendorId());
		}
		if (TextUtils.isEmpty(info.product)) {
			info.product = String.format("%04x", device.getProductId());
		}
	}
	return info;
}

源代码9 项目： DeviceConnect-Android 文件： USBMonitor.java

/**
 * ベンダー名・製品名・バージョン・シリアルを取得する
 * @param manager
 * @param device
 * @param _info
 * @return
 */
public static UsbDeviceInfo updateDeviceInfo(final UsbManager manager, final UsbDevice device, final UsbDeviceInfo _info) {
	final UsbDeviceInfo info = _info != null ? _info : new UsbDeviceInfo();
	info.clear();

	if (device != null) {
		if (BuildCheck.isLollipop()) {
			info.manufacturer = device.getManufacturerName();
			info.product = device.getProductName();
			info.serial = device.getSerialNumber();
		}
		if (BuildCheck.isMarshmallow()) {
			info.usb_version = device.getVersion();
		}
		if ((manager != null) && manager.hasPermission(device)) {
			final UsbDeviceConnection connection = manager.openDevice(device);
			final byte[] desc = connection.getRawDescriptors();

			if (TextUtils.isEmpty(info.usb_version)) {
				info.usb_version = String.format("%x.%02x", ((int)desc[3] & 0xff), ((int)desc[2] & 0xff));
			}
			if (TextUtils.isEmpty(info.version)) {
				info.version = String.format("%x.%02x", ((int)desc[13] & 0xff), ((int)desc[12] & 0xff));
			}
			if (TextUtils.isEmpty(info.serial)) {
				info.serial = connection.getSerial();
			}

			final byte[] languages = new byte[256];
			int languageCount = 0;
			// controlTransfer(int requestType, int request, int value, int index, byte[] buffer, int length, int timeout)
			try {
				int result = connection.controlTransfer(
					USB_REQ_STANDARD_DEVICE_GET, // USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_DEVICE
    				USB_REQ_GET_DESCRIPTOR,
    				(USB_DT_STRING << 8) | 0, 0, languages, 256, 0);
				if (result > 0) {
        			languageCount = (result - 2) / 2;
				}
				if (languageCount > 0) {
					if (TextUtils.isEmpty(info.manufacturer)) {
						info.manufacturer = getString(connection, desc[14], languageCount, languages);
					}
					if (TextUtils.isEmpty(info.product)) {
						info.product = getString(connection, desc[15], languageCount, languages);
					}
					if (TextUtils.isEmpty(info.serial)) {
						info.serial = getString(connection, desc[16], languageCount, languages);
					}
				}
			} finally {
				connection.close();
			}
		}
		if (TextUtils.isEmpty(info.manufacturer)) {
			info.manufacturer = USBVendorId.vendorName(device.getVendorId());
		}
		if (TextUtils.isEmpty(info.manufacturer)) {
			info.manufacturer = String.format("%04x", device.getVendorId());
		}
		if (TextUtils.isEmpty(info.product)) {
			info.product = String.format("%04x", device.getProductId());
		}
	}
	return info;
}

方法所在类

android.hardware.usb.UsbDeviceConnection