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Added in API level 23
Summary: Nested Classes | Methods | Inherited Methods | [Expand All]

MidiManager

public final class MidiManager
extends Object

java.lang.Object
    android.media.midi.MidiManager

这个类是MIDI服务的公共应用程序接口。

您可以通过调用 Context.getSystemService()来获得此类的实例。

MidiManager manager = (MidiManager) getSystemService(Context.MIDI_SERVICE);

摘要(Summary)

Nested classes
class MidiManager.DeviceCallback

回叫类用于客户端接收MIDI设备添加和删除通知
interface MidiManager.OnDeviceOpenedListener

监听器类用于接收openDevice(MidiDeviceInfo, MidiManager.OnDeviceOpenedListener, Handler)和openBluetoothDevice(BluetoothDevice, MidiManager.OnDeviceOpenedListener, Handler)的结果

公共方法(Public methods)
MidiDeviceInfo[] getDevices()

获取所有连接的MIDI设备的列表。
void openBluetoothDevice(BluetoothDevice bluetoothDevice, MidiManager.OnDeviceOpenedListener listener, Handler handler)

打开蓝牙MIDI设备进行读写。
void openDevice(MidiDeviceInfo deviceInfo, MidiManager.OnDeviceOpenedListener listener, Handler handler)

打开一个MIDI设备进行读写。
void registerDeviceCallback(MidiManager.DeviceCallback callback, Handler handler)

注册回调以在MIDI设备添加和删除时接收通知。
void unregisterDeviceCallback(MidiManager.DeviceCallback callback)

取消注册 MidiManager.DeviceCallback 。

继承方法(Inherited methods)
From class java.lang.Object

公共方法(Public methods)

getDevices

Added in API level 23 
MidiDeviceInfo[] getDevices ()

获取所有连接的MIDI设备的列表。

返回(Returns)
MidiDeviceInfo[] an array of all MIDI devices

openBluetoothDevice

Added in API level 23 
void openBluetoothDevice (BluetoothDevice bluetoothDevice, 
                MidiManager.OnDeviceOpenedListener listener, 
                Handler handler)

打开蓝牙MIDI设备进行读写。

参数(Parameters)
bluetoothDevice BluetoothDevice: a BluetoothDevice to open as a MIDI device
listener MidiManager.OnDeviceOpenedListener: a MidiManager.OnDeviceOpenedListener to be called to receive the result
handler Handler: the Handler that will be used for delivering the result. If handler is null, then the thread used for the listener is unspecified.

openDevice

Added in API level 23 
void openDevice (MidiDeviceInfo deviceInfo, 
                MidiManager.OnDeviceOpenedListener listener, 
                Handler handler)

打开一个MIDI设备进行读写。

参数(Parameters)
deviceInfo MidiDeviceInfo: a MidiDeviceInfo to open
listener MidiManager.OnDeviceOpenedListener: a MidiManager.OnDeviceOpenedListener to be called to receive the result
handler Handler: the Handler that will be used for delivering the result. If handler is null, then the thread used for the listener is unspecified.

registerDeviceCallback

Added in API level 23 
void registerDeviceCallback (MidiManager.DeviceCallback callback, 
                Handler handler)

注册回调以在MIDI设备添加和删除时接收通知。 对于任何具有开放端口的设备，将立即调用onDeviceStatusChanged(MidiDeviceStatus)方法。 这允许应用程序知道哪些输入端口已被使用，因此不可用。 在注册回调之前，应用程序应调用getDevices()以获取已添加设备的列表。

参数(Parameters)
callback MidiManager.DeviceCallback: a MidiManager.DeviceCallback for MIDI device notifications
handler Handler: The Handler that will be used for delivering the device notifications. If handler is null, then the thread used for the callback is unspecified.

unregisterDeviceCallback

Added in API level 23 
void unregisterDeviceCallback (MidiManager.DeviceCallback callback)

取消注册 MidiManager.DeviceCallback 。

参数(Parameters)
callback MidiManager.DeviceCallback: a MidiManager.DeviceCallback to unregister
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