在我的应用中，我将设备与目标配对。之后，我将这个设备放在我的有界列表中：
BluetoothDevice[] mAllBondedDevices = (BluetoothDevice[]) adapter.getBondedDevices().toArray(new BluetoothDevice[0]);
for (BluetoothDevice d : mAllBondedDevices) {
Log.d("trace", d.getName().toString()); //check it here
}
现在我想向我的目标发送一个文件，就像我的手机将文件发送到任何移动设备或计算机一样。
我必须使用反射来发送文件吗？ 或这个问题有其他一些解决方案吗？
我的目标设备是计算机和手机
答案 0 :(得分：4)
如果我正确理解您的问题，无需编写任何服务器和客户端即可将文件传输到其他设备，您可以使用以下方法之一
<强> 1 发送您的文件使用呼叫意图
Intent intent = new Intent();
intent.setAction(Intent.ACTION_SEND);
intent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(new File("your_file_address")));
startActivity(intent);
但在此代码中出现了共享意图，之后您需要选择蓝牙来传输文件
<强> 2 要挂钩此选项，您可以尝试此代码
String className = null;
String packageName = null;
file = new File(Environment.getExternalStorageDirectory(), "file.pdf");
Intent intent = new Intent();
intent.setAction(Intent.ACTION_SEND);
intent.setType("text/plain");
intent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file) );
PackageManager pm = activity.getPackageManager();
List<ResolveInfo> appsList = pm.queryIntentActivities( intent, 0);
if(appsList.size() > 0 ){
boolean found = false;
for(ResolveInfo info: appsList){
packageName = info.activityInfo.packageName;
if( packageName.equals("com.android.bluetooth")){
className = info.activityInfo.name;
found = true;
break;// found
}
}
}
intent.setClassName(packageName, className);
activity.startActivity(intent);
这种方式的缺点是你需要选择你的目标 NOT PROGRAMMATICALLY
3。但如果您想选择目标并以编程方式发送文件，可以尝试使用此代码
ContentValues values = new ContentValues();
values.put(BluetoothShare.URI, Uri.fromFile(new File(Environment.getExternalStorageDirectory(), "clip.3gp")).toString());
values.put(BluetoothShare.DESTINATION, address);
values.put(BluetoothShare.DIRECTION, BluetoothShare.DIRECTION_OUTBOUND);
Long ts = System.currentTimeMillis();
values.put(BluetoothShare.TIMESTAMP, ts);
Uri contentUri = activity.getContentResolver().insert(BluetoothShare.CONTENT_URI, values);
您需要下载BluetoothShare代码。（在答案末尾添加） 缺点这种方式是你不能在android 4+中使用这个代码。我测试一下！
BluetoothShare.java 代码（注意它的包地址）
package com.android.bluetooth.opp;
/*
* Copyright (c) 2008-2009, Motorola, Inc.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* - Neither the name of the Motorola, Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
import android.net.Uri;
import android.provider.BaseColumns;
import android.net.Uri;
/**
* Exposes constants used to interact with the Bluetooth Share manager's content
* provider.
* @hide
*/
public final class BluetoothShare implements BaseColumns {
private BluetoothShare() {
}
/**
* The permission to access the Bluetooth Share Manager
*/
public static final String PERMISSION_ACCESS = "android.permission.ACCESS_BLUETOOTH_SHARE";
/**
* The content:// URI for the data table in the provider
*/
public static final Uri CONTENT_URI = Uri.parse("content://com.android.bluetooth.opp/btopp");
/**
* Broadcast Action: this is sent by the Bluetooth Share component to
* transfer complete. The request detail could be retrieved by app * as _ID
* is specified in the intent's data.
*/
public static final String TRANSFER_COMPLETED_ACTION = "android.btopp.intent.action.TRANSFER_COMPLETE";
/**
* This is sent by the Bluetooth Share component to indicate there is an
* incoming file need user to confirm.
*/
public static final String INCOMING_FILE_CONFIRMATION_REQUEST_ACTION = "android.btopp.intent.action.INCOMING_FILE_NOTIFICATION";
/**
* This is sent by the Bluetooth Share component to indicate there is an
* incoming file request timeout and need update UI.
*/
public static final String USER_CONFIRMATION_TIMEOUT_ACTION = "android.btopp.intent.action.USER_CONFIRMATION_TIMEOUT";
/**
* The name of the column containing the URI of the file being
* sent/received.
* <P>
* Type: TEXT
* </P>
* <P>
* Owner can Init/Read
* </P>
*/
public static final String URI = "uri";
/**
* The name of the column containing the filename that the incoming file
* request recommends. When possible, the Bluetooth Share manager will
* attempt to use this filename, or a variation, as the actual name for the
* file.
* <P>
* Type: TEXT
* </P>
* <P>
* Owner can Init/Read
* </P>
*/
public static final String FILENAME_HINT = "hint";
/**
* The name of the column containing the filename where the shared file was
* actually stored.
* <P>
* Type: TEXT
* </P>
* <P>
* Owner can Read
* </P>
*/
public static final String _DATA = "_data";
/**
* The name of the column containing the MIME type of the shared file.
* <P>
* Type: TEXT
* </P>
* <P>
* Owner can Init/Read
* </P>
*/
public static final String MIMETYPE = "mimetype";
/**
* The name of the column containing the direction (Inbound/Outbound) of the
* transfer. See the DIRECTION_* constants for a list of legal values.
* <P>
* Type: INTEGER
* </P>
* <P>
* Owner can Init/Read
* </P>
*/
public static final String DIRECTION = "direction";
/**
* The name of the column containing Bluetooth Device Address that the
* transfer is associated with.
* <P>
* Type: TEXT
* </P>
* <P>
* Owner can Init/Read
* </P>
*/
public static final String DESTINATION = "destination";
/**
* The name of the column containing the flags that controls whether the
* transfer is displayed by the UI. See the VISIBILITY_* constants for a
* list of legal values.
* <P>
* Type: INTEGER
* </P>
* <P>
* Owner can Init/Read/Write
* </P>
*/
public static final String VISIBILITY = "visibility";
/**
* The name of the column containing the current user confirmation state of
* the transfer. Applications can write to this to confirm the transfer. the
* USER_CONFIRMATION_* constants for a list of legal values.
* <P>
* Type: INTEGER
* </P>
* <P>
* Owner can Init/Read/Write
* </P>
*/
public static final String USER_CONFIRMATION = "confirm";
/**
* The name of the column containing the current status of the transfer.
* Applications can read this to follow the progress of each download. See
* the STATUS_* constants for a list of legal values.
* <P>
* Type: INTEGER
* </P>
* <P>
* Owner can Read
* </P>
*/
public static final String STATUS = "status";
/**
* The name of the column containing the total size of the file being
* transferred.
* <P>
* Type: INTEGER
* </P>
* <P>
* Owner can Read
* </P>
*/
public static final String TOTAL_BYTES = "total_bytes";
/**
* The name of the column containing the size of the part of the file that
* has been transferred so far.
* <P>
* Type: INTEGER
* </P>
* <P>
* Owner can Read
* </P>
*/
public static final String CURRENT_BYTES = "current_bytes";
/**
* The name of the column containing the timestamp when the transfer is
* initialized.
* <P>
* Type: INTEGER
* </P>
* <P>
* Owner can Read
* </P>
*/
public static final String TIMESTAMP = "timestamp";
/**
* This transfer is outbound, e.g. share file to other device.
*/
public static final int DIRECTION_OUTBOUND = 0;
/**
* This transfer is inbound, e.g. receive file from other device.
*/
public static final int DIRECTION_INBOUND = 1;
/**
* This transfer is waiting for user confirmation.
*/
public static final int USER_CONFIRMATION_PENDING = 0;
/**
* This transfer is confirmed by user.
*/
public static final int USER_CONFIRMATION_CONFIRMED = 1;
/**
* This transfer is auto-confirmed per previous user confirmation.
*/
public static final int USER_CONFIRMATION_AUTO_CONFIRMED = 2;
/**
* This transfer is denied by user.
*/
public static final int USER_CONFIRMATION_DENIED = 3;
/**
* This transfer is timeout before user action.
*/
public static final int USER_CONFIRMATION_TIMEOUT = 4;
/**
* This transfer is visible and shows in the notifications while in progress
* and after completion.
*/
public static final int VISIBILITY_VISIBLE = 0;
/**
* This transfer doesn't show in the notifications.
*/
public static final int VISIBILITY_HIDDEN = 1;
/**
* Returns whether the status is informational (i.e. 1xx).
*/
public static boolean isStatusInformational(int status) {
return (status >= 100 && status < 200);
}
/**
* Returns whether the transfer is suspended. (i.e. whether the transfer
* won't complete without some action from outside the transfer manager).
*/
public static boolean isStatusSuspended(int status) {
return (status == STATUS_PENDING);
}
/**
* Returns whether the status is a success (i.e. 2xx).
*/
public static boolean isStatusSuccess(int status) {
return (status >= 200 && status < 300);
}
/**
* Returns whether the status is an error (i.e. 4xx or 5xx).
*/
public static boolean isStatusError(int status) {
return (status >= 400 && status < 600);
}
/**
* Returns whether the status is a client error (i.e. 4xx).
*/
public static boolean isStatusClientError(int status) {
return (status >= 400 && status < 500);
}
/**
* Returns whether the status is a server error (i.e. 5xx).
*/
public static boolean isStatusServerError(int status) {
return (status >= 500 && status < 600);
}
/**
* Returns whether the transfer has completed (either with success or
* error).
*/
public static boolean isStatusCompleted(int status) {
return (status >= 200 && status < 300) || (status >= 400 && status < 600);
}
/**
* This transfer hasn't stated yet
*/
public static final int STATUS_PENDING = 190;
/**
* This transfer has started
*/
public static final int STATUS_RUNNING = 192;
/**
* This transfer has successfully completed. Warning: there might be other
* status values that indicate success in the future. Use isSucccess() to
* capture the entire category.
*/
public static final int STATUS_SUCCESS = 200;
/**
* This request couldn't be parsed. This is also used when processing
* requests with unknown/unsupported URI schemes.
*/
public static final int STATUS_BAD_REQUEST = 400;
/**
* This transfer is forbidden by target device.
*/
public static final int STATUS_FORBIDDEN = 403;
/**
* This transfer can't be performed because the content cannot be handled.
*/
public static final int STATUS_NOT_ACCEPTABLE = 406;
/**
* This transfer cannot be performed because the length cannot be determined
* accurately. This is the code for the HTTP error "Length Required", which
* is typically used when making requests that require a content length but
* don't have one, and it is also used in the client when a response is
* received whose length cannot be determined accurately (therefore making
* it impossible to know when a transfer completes).
*/
public static final int STATUS_LENGTH_REQUIRED = 411;
/**
* This transfer was interrupted and cannot be resumed. This is the code for
* the OBEX error "Precondition Failed", and it is also used in situations
* where the client doesn't have an ETag at all.
*/
public static final int STATUS_PRECONDITION_FAILED = 412;
/**
* This transfer was canceled
*/
public static final int STATUS_CANCELED = 490;
/**
* This transfer has completed with an error. Warning: there will be other
* status values that indicate errors in the future. Use isStatusError() to
* capture the entire category.
*/
public static final int STATUS_UNKNOWN_ERROR = 491;
/**
* This transfer couldn't be completed because of a storage issue.
* Typically, that's because the file system is missing or full.
*/
public static final int STATUS_FILE_ERROR = 492;
/**
* This transfer couldn't be completed because of no sdcard.
*/
public static final int STATUS_ERROR_NO_SDCARD = 493;
/**
* This transfer couldn't be completed because of sdcard full.
*/
public static final int STATUS_ERROR_SDCARD_FULL = 494;
/**
* This transfer couldn't be completed because of an unspecified un-handled
* OBEX code.
*/
public static final int STATUS_UNHANDLED_OBEX_CODE = 495;
/**
* This transfer couldn't be completed because of an error receiving or
* processing data at the OBEX level.
*/
public static final int STATUS_OBEX_DATA_ERROR = 496;
/**
* This transfer couldn't be completed because of an error when establishing
* connection.
*/
public static final int STATUS_CONNECTION_ERROR = 497;
}