android 修改系统显示u盘的名称

frameworks\base\media\java\android\mtp\MtpDatabase.java

private int getDeviceProperty(int property, long[] outIntValue, char[] outStringValue) {

Log.e( TAG, "getDeviceProperty " + property );
switch (property)
{
case MtpConstants.DEVICE_PROPERTY_SYNCHRONIZATION_PARTNER:
//case MtpConstants.DEVICE_PROPERTY_DEVICE_FRIENDLY_NAME:
// writable string properties kept in shared preferences
String value = mDeviceProperties.getString(Integer.toString(property), "");
int length = value.length();
if (length > 255) {
length = 255;
}
value.getChars(0, length, outStringValue, 0);
outStringValue[length] = 0;
return MtpConstants.RESPONSE_OK;

case MtpConstants.DEVICE_PROPERTY_DEVICE_FRIENDLY_NAME:
// writable string properties kept in shared preferences
String value1 = mDeviceProperties.getString(Integer.toString(property), "");
Log.e( TAG, "DEVICE_PROPERTY_DEVICE_FRIENDLY_NAME " + value1 );

value1 = "VDE-MID";

//强制写入u盘名称

Log.e( TAG, "DEVICE_PROPERTY_DEVICE_FRIENDLY_NAME1 " + value1 );
int length1 = value1.length();
if (length1 > 255) {
length1 = 255;
}
value1.getChars(0, length1, outStringValue, 0);
outStringValue[length1] = 0;
return MtpConstants.RESPONSE_OK;

case MtpConstants.DEVICE_PROPERTY_IMAGE_SIZE:
// use screen size as max image size
Display display = ((WindowManager)mContext.getSystemService(
Context.WINDOW_SERVICE)).getDefaultDisplay();
int width = display.getMaximumSizeDimension();
int height = display.getMaximumSizeDimension();
String imageSize = Integer.toString(width) + "x" + Integer.toString(height);
imageSize.getChars(0, imageSize.length(), outStringValue, 0);
outStringValue[imageSize.length()] = 0;
return MtpConstants.RESPONSE_OK;

default:
return MtpConstants.RESPONSE_DEVICE_PROP_NOT_SUPPORTED;
}
}

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