将文件Google Wear发送到手机 [英] Send file Google Wear to mobile
本文介绍了将文件Google Wear发送到手机的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正尝试将Google服装中的文件发送到Nexus5。我已经阅读了一些教程,并想出了以下代码,但是我的手机未收到文件。
I'm trying to send a file from my Google wear to my Nexus 5. I've read some tutorials and came up with the following code but my phone isn't receiving a file.
移动:
private GoogleApiClient mGoogleApiClient;
private int count = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addApi(Wearable.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
Log.d(TAG, "CONNECTING:");
mGoogleApiClient.connect();
}
@Override
protected void onResume() {
super.onStart();
}
@Override
public void onConnected(Bundle bundle) {
Log.d(TAG, "CONNECTED");
Toast.makeText(getApplicationContext(), "Connected.",
Toast.LENGTH_LONG).show();
Wearable.DataApi.addListener(mGoogleApiClient, this);
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
protected void onPause() {
super.onPause();
Wearable.DataApi.removeListener(mGoogleApiClient, this);
mGoogleApiClient.disconnect();
}
@Override
public void onDataChanged(DataEventBuffer dataEvents) {
Toast.makeText(getApplicationContext(), "Data changed.",
Toast.LENGTH_LONG).show();
for (DataEvent event : dataEvents) {
if (event.getType() == DataEvent.TYPE_CHANGED &&
event.getDataItem().getUri().getPath().equals("/txt")) {
// Get the Asset object
DataMapItem dataMapItem = DataMapItem.fromDataItem(event.getDataItem());
Asset asset = dataMapItem.getDataMap().getAsset("sensordataAsset");
Log.d(TAG, "");
ConnectionResult result =
mGoogleApiClient.blockingConnect(10000, TimeUnit.MILLISECONDS);
if (!result.isSuccess()) {
return;
}
// Convert asset into a file descriptor and block until it's ready
InputStream assetInputStream = Wearable.DataApi.getFdForAsset(
mGoogleApiClient, asset).await().getInputStream();
mGoogleApiClient.disconnect();
if (assetInputStream == null) {
return;
}
// Get folder for output
File storage = getApplicationContext().getFilesDir();
Log.d(TAG, "Location:" + storage.toString());
File dir = new File(storage.getAbsolutePath() + "/Clockwork/");
if (!dir.exists()) {
dir.mkdirs();
} // Create folder if needed
Log.d(TAG, dir.getAbsolutePath());
// Read data from the Asset and write it to a file on external storage
final File file = new File(dir, "sensordata.txt");
if (!file.exists()) {
file.mkdirs();
}
Log.d(TAG, file.getPath());
try {
FileOutputStream fOut = new FileOutputStream(file);
int nRead;
byte[] data = new byte[16384];
while ((nRead = assetInputStream.read(data, 0, data.length)) != -1) {
fOut.write(data, 0, nRead);
}
fOut.flush();
fOut.close();
} catch (Exception e) {
}
// Rescan folder to make it appear
try {
String[] paths = new String[1];
paths[0] = file.getAbsolutePath();
MediaScannerConnection.scanFile(this, paths, null, null);
} catch (Exception e) {
}
}
}
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
磨损:
public void sendTextFile() {
readFromFile();
FileInputStream fileInputStream = null;
byte[] bFile = new byte[(int) file.length()];
try {
fileInputStream = new FileInputStream(file);
fileInputStream.read(bFile);
fileInputStream.close();
} catch (Exception e) {
Log.e(TAG, "sendTextFile: " + e.toString());
}
connectGoogleApi();
//Create an Asset from the byte array and set it via the DataApi
Asset asset = Asset.createFromBytes(bFile);
PutDataMapRequest dataMap = PutDataMapRequest.create("/txt");
dataMap.getDataMap().putAsset("sensordataAsset", asset);
PutDataRequest request = dataMap.asPutDataRequest();
PendingResult<DataApi.DataItemResult> pendingResult = Wearable.DataApi
.putDataItem(mGoogleApiClient, request);
}
private void connectGoogleApi() {
mGoogleApiClient = new GoogleApiClient.Builder(context)
.addApi(Wearable.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
mGoogleApiClient.connect();
}
@Override
public void onConnected(Bundle bundle) {
Log.d(TAG, "CONNECTED");
Toast.makeText(context, "Connected.",
Toast.LENGTH_LONG).show();
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
使用上面列出的方法的记录器。有人可以告诉我我在做什么错。
I've made a logger with the methods listed above. Can someone tell me what I'm doing wrong. Thanks in advance.
推荐答案
主要错误:
// Read data from the Asset and write it to a file on external storage
final File file = new File(dir, "sensordata.txt");
if (!file.exists()) {
file.mkdirs(); <---- you create a directory instead a file
}
您看不到错误。
fOut.flush();
fOut.close();
} catch (Exception e) { <--- hide exception
}
文件作为目录存在,无法打开流
File exists as directory and a stream can't be open it
FileOutputStream fOut = new FileOutputStream(file); <-- throw exception
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