Android 下通过反射调用加载/卸载(mount/unmount) 外置SD卡

/* * Copyright (C) 2010 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package android.os.storage; import android.os.Binder; import android.os.IBinder; import android.os.IInterface; import android.os.Parcel; import android.os.Parcelable; import android.os.RemoteException; import android.os.storage.StorageVolume; /** * WARNING! Update IMountService.h and IMountService.cpp if you change this * file. In particular, the ordering of the methods below must match the * _TRANSACTION enum in IMountService.cpp * * @hide - Applications should use android.os.storage.StorageManager to access * storage functions. */ public interface IMountService extends IInterface { /** Local-side IPC implementation stub class. */ public static abstract class Stub extends Binder implements IMountService { private static class Proxy implements IMountService { private final IBinder mRemote; Proxy(IBinder remote) { mRemote = remote; } public IBinder asBinder() { return mRemote; } public String getInterfaceDescriptor() { return DESCRIPTOR; } /** * Registers an IMountServiceListener for receiving async * notifications. */ public void registerListener(IMountServiceListener listener) throws RemoteException { Parcel _data = Parcel.obtain(); Parcel _reply = Parcel.obtain(); try { _data.writeInterfaceToken(DESCRIPTOR); _data.writeStrongBinder((listener != null ? listener.asBinder() : null)); mRemote.transact(Stub.TRANSACTION_registerListener, _data, _reply, 0); _reply.readException(); } finally { _reply.recycle(); _data.recycle(); } } /** * Unregisters an IMountServiceListener */ public void unregisterListener(IMountServiceListener listener) throws RemoteException { Parcel _data = Parcel.obtain(); Parcel _reply = Parcel.obtain(); try { _data.writeInterfaceToken(DESCRIPTOR); _data.writeStrongBinder((listener != null ? listener.asBinder() : null)); mRemote.transact(Stub.TRANSACTION_unregisterListener, _data, _reply, 0); _reply.readException(); } finally { _reply.recycle(); _data.recycle(); } } /** * Returns true if a USB mass storage host is connected */ public boolean isUsbMassStorageConnected() throws RemoteException { Parcel _data = Parcel.obtain(); Parcel _reply = Parcel.obtain(); boolean _result; try { _data.writeInterfaceToken(DESCRIPTOR); mRemote.transact(Stub.TRANSACTION_isUsbMassStorageConnected, _data, _reply, 0); _reply.readException(); _result = 0 != _reply.readInt(); } finally { _reply.recycle(); _data.recycle(); } return _result; } /** * Enables / disables USB mass storage. The caller should check * actual status of enabling/disabling USB mass storage via * StorageEventListener. */ public void setUsbMassStorageEnabled(boolean enable) throws RemoteException { Parcel _data = Parcel.obtain(); Parcel _reply = Parcel.obtain(); try { _data.writeInterfaceToken(DESCRIPTOR); _data.writeInt((enable ? 1 : 0)); mRemote.transact(Stub.TRANSACTION_setUsbMassStorageEnabled, _data, _reply, 0); _reply.readException(); } finally { _reply.recycle(); _data.recycle(); } } /** * Returns true if a USB mass storage host is enabled (media is * shared) */ public boolean isUsbMassStorageEnabled() throws RemoteException { Parcel _data = Parcel.obtain(); Parcel _reply = Parcel.obtain(); boolean _result; try { _data.writeInterfaceToken(DESCRIPTOR); mRemote.transact(Stub.TRANSACTION_isUsbMassStorageEnabled, _data, _reply, 0); _reply.readException(); _result = 0 != _reply.readInt(); } finally { _reply.recycle(); _data.recycle(); } return _result; } /** * Mount external storage at given mount point. Returns an int * consistent with MountServiceResultCode */ public int mountVolume(String mountPoint) throws RemoteException { Parcel _data = Parcel.obtain(); Parcel _reply = Parcel.obtain(); int _result; try { _data.writeInterfaceToken(DESCRIPTOR); _data.writeString(mountPoint); mRemote.transact(Stub.TRANSACTION_mountVolume, _data, _reply, 0); _reply.readException(); _result = _reply.readInt(); } finally { _reply.recycle(); _data.recycle(); } return _result; } /** * Safely unmount external storage at given mount point. The unmount * is an asynchronous operation. Applications should register * StorageEventListener for storage related status changes. */ public void unmountVolume(String mountPoint, boolean force, boolean removeEncryption) throws RemoteException { Parcel _data = Parcel.obtain(); Parcel _reply = Parcel.obtain(); try { _data.writeInterfaceToken(DESCRIPTOR); _data.writeString(mountPoint); _data.writeInt((force ? 1 : 0)); _data.writeInt((removeEncryption ? 1 : 0)); mRemote.transact(Stub.TRANSACTION_unmountVolume, _data, _reply, 0); _reply.readException(); } finally { _reply.recycle(); _data.recycle(); } } /** * Format external storage given a mount point. Returns an int * consistent with MountServiceResultCode */ public int formatVolume(String mountPoint) throws RemoteException { Parcel _data = Parcel.obtain(); Parcel _reply = Parcel.obtain(); int _result; try { _data.writeInterfaceToken(DESCRIPTOR); _data.writeString(mountPoint); mRemote.transact(Stub.