android - 蓝牙不发送文件到其他设备

Question

有人问过，但我没有找到任何解决方案。对于蓝牙应用程序，我使用的是 bluetoothShare.class。

我将文件发送到目标设备的源代码

MainActvity.class:

Set<BluetoothDevice> devices = btAdapter
                            .getBondedDevices();
                    final String btDeviceName = selected_deviceName;
                    BluetoothDevice device = null;

                    for (BluetoothDevice itDevice : devices) {
                        if (btDeviceName.equals(itDevice.getName())) {
                            device = itDevice;
                        }
                    }

                    if (device != null) {

                        ContentValues values = new ContentValues();
                        values.put(BluetoothShare.URI, uri.toString());
                        values.put(BluetoothShare.MIMETYPE, "image/jpeg");
                        values.put(BluetoothShare.DESTINATION,
                                device.getAddress());
                        values.put(BluetoothShare.DIRECTION,
                                BluetoothShare.DIRECTION_OUTBOUND);
                        Long ts = System.currentTimeMillis();
                        values.put(BluetoothShare.TIMESTAMP, ts);
                        final Uri contentUri = getApplicationContext()
                                .getContentResolver().insert(
                                        BluetoothShare.CONTENT_URI, values);
                        Log.v(TAG, "Insert contentUri: " + contentUri
                                + "  to device: " + device.getName());
                        Toast.makeText(getApplicationContext(), "Success",
                                Toast.LENGTH_LONG).show();
                    } else {
                        textStatus
                                .setText("Bluetooth remote device not found");
                    }
                } else {
                    textStatus.setText("Bluetooth not activated");
                }
            }

            else {
                Toast.makeText(getApplicationContext(), "No devices found",
                        Toast.LENGTH_LONG).show();
            }

和 blueToothShare.class:

package process.bluetooth.sendfile.opp;

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


public final class BluetoothShare implements BaseColumns {
private BluetoothShare() {
}

public static final String PERMISSION_ACCESS = "android.permission.ACCESS_BLUETOOTH_SHARE";

public static final Uri CONTENT_URI = Uri
        .parse("content://com.android.bluetooth.opp/btopp");

public static final String TRANSFER_COMPLETED_ACTION = "android.btopp.intent.action.TRANSFER_COMPLETE";

public static final String INCOMING_FILE_CONFIRMATION_REQUEST_ACTION = "android.btopp.intent.action.INCOMING_FILE_NOTIFICATION";

public static final String USER_CONFIRMATION_TIMEOUT_ACTION = "android.btopp.intent.action.USER_CONFIRMATION_TIMEOUT";

public static final String URI = "uri";

public static final String FILENAME_HINT = "hint";

public static final String _DATA = "_data";

public static final String MIMETYPE = "mimetype";

public static final String DIRECTION = "direction";

public static final String DESTINATION = "destination";

public static final String VISIBILITY = "visibility";

public static final String USER_CONFIRMATION = "confirm";

public static final String STATUS = "status";

public static final String TOTAL_BYTES = "total_bytes";

public static final String CURRENT_BYTES = "current_bytes";

public static final String TIMESTAMP = "timestamp";

public static final int DIRECTION_OUTBOUND = 0;

public static final int DIRECTION_INBOUND = 1;

public static final int USER_CONFIRMATION_PENDING = 0;

public static final int USER_CONFIRMATION_CONFIRMED = 1;

public static final int USER_CONFIRMATION_AUTO_CONFIRMED = 2;

public static final int USER_CONFIRMATION_DENIED = 3;

public static final int USER_CONFIRMATION_TIMEOUT = 4;

public static final int VISIBILITY_VISIBLE = 0;

public static final int VISIBILITY_HIDDEN = 1;

public static boolean isStatusInformational(int status) {
    return (status >= 100 && status < 200);
}

public static boolean isStatusSuspended(int status) {
    return (status == STATUS_PENDING);
}

public static boolean isStatusSuccess(int status) {
    return (status >= 200 && status < 300);
}

public static boolean isStatusError(int status) {
    return (status >= 400 && status < 600);
}

public static boolean isStatusClientError(int status) {
    return (status >= 400 && status < 500);
}

public static boolean isStatusServerError(int status) {
    return (status >= 500 && status < 600);
}

public static boolean isStatusCompleted(int status) {
    return (status >= 200 && status < 300)
            || (status >= 400 && status < 600);
}

public static final int STATUS_PENDING = 190;

public static final int STATUS_RUNNING = 192;

public static final int STATUS_SUCCESS = 200;

public static final int STATUS_BAD_REQUEST = 400;

public static final int STATUS_FORBIDDEN = 403;

public static final int STATUS_NOT_ACCEPTABLE = 406;

public static final int STATUS_LENGTH_REQUIRED = 411;

public static final int STATUS_PRECONDITION_FAILED = 412;

public static final int STATUS_CANCELED = 490;

public static final int STATUS_UNKNOWN_ERROR = 491;

public static final int STATUS_FILE_ERROR = 492;

public static final int STATUS_ERROR_NO_SDCARD = 493;

public static final int STATUS_ERROR_SDCARD_FULL = 494;

public static final int STATUS_UNHANDLED_OBEX_CODE = 495;

public static final int STATUS_OBEX_DATA_ERROR = 496;

public static final int STATUS_CONNECTION_ERROR = 497;

}

Answer 1

BluetoothShare 类不支持 android 4.1 及更高版本。您可以使用以下 Intent 编码在 android 4.1 及以上版本中发送文件

Intent intent = new Intent();
    intent.setAction(Intent.ACTION_SEND);
    intent.setComponent(new ComponentName(
        "com.android.bluetooth",
        "com.android.bluetooth.opp.BluetoothOppLauncherActivity"));
    intent.setType("image/jpeg");
    file = new File(filepath);
    intent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));
    startActivity(intent);

Android v 2.2/2.3 中的某些设备也无法通过 bluetoothShare 类发送文件。