Android应用程序使用蓝牙传输文件

Question

我正在开发一个android应用程序，通过蓝牙将文件传输到远程设备。我已成功连接设备，但不知道如何进行传输。任何帮助？

Answer 1

试试这个。 我可以使用此代码发送文件。 BluetoothShare.java

import android.provider.BaseColumns; 
import android.net.Uri; 

/** 
* Exposes constants used to interact with the Bluetooth Share manager's content 
* provider. 
*/ 

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. 
*/ 
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. 
*/ 
public static final String FILENAME_HINT = "hint"; 

/** 
* The name of the column containing the filename where the shared file was 
* actually stored. 
*/ 
public static final String _DATA = "_data"; 

/** 
* The name of the column containing the MIME type of the shared file. 
*/ 
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. 
*/ 
public static final String DIRECTION = "direction"; 

/** 
* The name of the column containing Bluetooth Device Address that the 
* transfer is associated with. 
*/ 
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. 
*/ 
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. 
*/ 
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. 
*/ 
public static final String STATUS = "status"; 

/** 
* The name of the column containing the total size of the file being 
* transferred. 
*/ 
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. 
*/ 
public static final String CURRENT_BYTES = "current_bytes"; 

/** 
* The name of the column containing the timestamp when the transfer is 
* initialized. 
*/ 
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; 

}