Java 使用Android将文本文件上载到Google Drive
已编辑:我已将文本设置为如下字符串: 字符串文本=(“你好!”) 我想把它变成一个纯文本文件,然后上传到谷歌驱动器文件夹。我试过下面的代码,但它不完整,所以我不能说出现了什么错误 我正在使用GoogleDrive的“快速入门”演示,并试图根据我的需要进行定制。链接: 驾驶员等级:Java 使用Android将文本文件上载到Google Drive,java,android,google-drive-api,google-drive-android-api,Java,Android,Google Drive Api,Google Drive Android Api,已编辑:我已将文本设置为如下字符串: 字符串文本=(“你好!”) 我想把它变成一个纯文本文件,然后上传到谷歌驱动器文件夹。我试过下面的代码,但它不完整,所以我不能说出现了什么错误 我正在使用GoogleDrive的“快速入门”演示,并试图根据我的需要进行定制。链接: 驾驶员等级: public class UploadDrive extends Activity implements ConnectionCallbacks,OnConnectionFailedListener { priva
public class UploadDrive extends Activity implements ConnectionCallbacks,OnConnectionFailedListener {
private static final String TAG = "androiddrivequickstart";
private static final int REQUEST_CODE_CAPTURE_IMAGE = 1;
private static final int REQUEST_CODE_CREATOR = 2;
private static final int REQUEST_CODE_RESOLUTION = 3;
private GoogleApiClient mGoogleApiClient;
private Bitmap mBitmapToSave;
private void saveFileToDrive() {
// Start by creating a new contents, and setting a callback.
Log.i(TAG, "Creating new contents.");
//How to call? Can i use File from java.io?
final Bitmap image = mBitmapToSave;
Drive.DriveApi.newDriveContents(mGoogleApiClient).setResultCallback(new ResultCallback<DriveContentsResult>() {
@Override
public void onResult(DriveContentsResult result) {
// If the operation was not successful, we cannot do anything
// and must
// fail.
if (!result.getStatus().isSuccess()) {
Log.i(TAG, "Failed to create new contents.");
return;
}
// Otherwise, we can write our data to the new contents.
Log.i(TAG, "New contents created.");
// Get an output stream for the contents.
OutputStream outputStream = result.getDriveContents().getOutputStream();
// Write the bitmap data from it.
ByteArrayOutputStream textFile = new ByteArrayOutputStream();
//image.compress(Bitmap.CompressFormat.PNG, 100, textFile);
try {
outputStream.write(textFile.toByteArray());
} catch (IOException e1) {
Log.i(TAG, "Unable to write file contents.");
}
// Create the initial metadata - MIME type and title.
// Note that the user will be able to change the title later.
MetadataChangeSet metadataChangeSet = new MetadataChangeSet.Builder()
.setMimeType("text/plain").setTitle("Log: test.txt").build();
// Create an intent for the file chooser, and start it.
IntentSender intentSender = Drive.DriveApi
.newCreateFileActivityBuilder()
.setInitialMetadata(metadataChangeSet)
.setInitialDriveContents(result.getDriveContents())
.build(mGoogleApiClient);
try {
startIntentSenderForResult(
intentSender, REQUEST_CODE_CREATOR, null, 0, 0, 0);
} catch (SendIntentException e) {
Log.i(TAG, "Failed to launch file chooser.");
}
}
});
}
@Override
protected void onResume() {
super.onResume();
if (mGoogleApiClient == null) {
// Create the API client and bind it to an instance variable.
// We use this instance as the callback for connection and connection
// failures.
// Since no account name is passed, the user is prompted to choose.
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addApi(Drive.API)
.addScope(Drive.SCOPE_FILE)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
}
// Connect the client. Once connected, the camera is launched.
mGoogleApiClient.connect();
}
@Override
protected void onPause() {
if (mGoogleApiClient != null) {
mGoogleApiClient.disconnect();
}
super.onPause();
}
@Override
protected void onActivityResult(final int requestCode, final int resultCode, final Intent data) {
switch (requestCode) {
case REQUEST_CODE_CAPTURE_IMAGE:
// Called after a photo has been taken.
if (resultCode == Activity.RESULT_OK) {
// Store the image data as a bitmap for writing later.
mBitmapToSave = (Bitmap) data.getExtras().get("data");
}
break;
case REQUEST_CODE_CREATOR:
// Called after a file is saved to Drive.
if (resultCode == RESULT_OK) {
Log.i(TAG, "Image successfully saved.");
mBitmapToSave = null;
// Just start the camera again for another photo.
startActivityForResult(new Intent(MediaStore.ACTION_IMAGE_CAPTURE),REQUEST_CODE_CAPTURE_IMAGE);
}
break;
}
}
@Override
public void onConnectionFailed(ConnectionResult result) {
// Called whenever the API client fails to connect.
Log.i(TAG, "GoogleApiClient connection failed: " + result.toString());
if (!result.hasResolution()) {
// show the localized error dialog.
GooglePlayServicesUtil.getErrorDialog(result.getErrorCode(), this, 0).show();
return;
}
// The failure has a resolution. Resolve it.
// Called typically when the app is not yet authorized, and an
// authorization
// dialog is displayed to the user.
try {
result.startResolutionForResult(this, REQUEST_CODE_RESOLUTION);
} catch (SendIntentException e) {
Log.e(TAG, "Exception while starting resolution activity", e);
}
}
@Override
public void onConnected(Bundle connectionHint) {
Log.i(TAG, "API client connected.");
if (mBitmapToSave == null) {
// This activity has no UI of its own. Just start the camera.
startActivityForResult(new Intent(MediaStore.ACTION_IMAGE_CAPTURE),
REQUEST_CODE_CAPTURE_IMAGE);
return;
}
saveFileToDrive();
}
@Override
public void onConnectionSuspended(int cause) {
Log.i(TAG, "GoogleApiClient connection suspended");
}
}
公共类UploadDrive extends活动实现ConnectionCallbacks、OnConnectionFailedListener{
私有静态最终字符串标记=“androiddrivequickstart”;
私有静态最终整数请求\代码\捕获\图像=1;
私有静态最终整数请求\代码\创建者=2;
私有静态最终整数请求\代码\分辨率=3;
私人GoogleapClient MGoogleapClient;
私有位图mbitmatosave;
私有void saveFileToDrive(){
//首先创建一个新的内容,并设置一个回调。
Log.i(标记“创建新内容”);
//如何调用?我可以使用java.io中的文件吗?
最终位图图像=mBitmapToSave;
Drive.DriveApi.newDriveContents(mGoogleApiClient.setResultCallback(newResultCallback()){
@凌驾
public void onResult(DriveContentsResult结果){
//如果手术不成功,我们什么也做不了
//而且必须
//失败。
如果(!result.getStatus().issucess()){
Log.i(标记“未能创建新内容”);
返回;
}
//否则,我们可以将数据写入新内容。
Log.i(标记“创建的新内容”);
//获取内容的输出流。
OutputStream OutputStream=result.getDriveContents().getOutputStream();
//从中写入位图数据。
ByteArrayOutputStream textFile=新建ByteArrayOutputStream();
//image.compress(Bitmap.CompressFormat.PNG,100,textFile);
试一试{
write(textFile.toByteArray());
}捕获(IOE1异常){
Log.i(标记“无法写入文件内容”);
}
//创建初始元数据-MIME类型和标题。
//请注意,用户稍后可以更改标题。
MetadataChangeSet MetadataChangeSet=新建MetadataChangeSet.Builder()
.setMimeType(“text/plain”).setTitle(“Log:test.txt”).build();
//为文件选择器创建意图,并启动它。
IntentSender IntentSender=Drive.DriveApi
.newCreateFileActivityBuilder()
.setInitialMetadata(metadataChangeSet)
.setInitialDriveContents(结果.getDriveContents())
.构建(mGoogleApiClient);
试一试{
startinentsenderforresult(
intentSender,请求\代码\创建者,null,0,0,0);
}捕获(发送){
Log.i(标记“未能启动文件选择器”);
}
}
});
}
@凌驾
受保护的void onResume(){
super.onResume();
if(mGoogleApiClient==null){
//创建API客户端并将其绑定到实例变量。
//我们使用这个实例作为连接和连接的回调
//失败。
//由于未传递任何帐户名,因此会提示用户选择。
mgoogleapclient=新的Googleapclient.Builder(此)
.addApi(Drive.API)
.addScope(驱动器.SCOPE\u文件)
.addConnectionCallbacks(此)
.addOnConnectionFailedListener(此)
.build();
}
//连接客户端。一旦连接,相机将启动。
mGoogleApiClient.connect();
}
@凌驾
受保护的void onPause(){
if(mGoogleApiClient!=null){
mGoogleApiClient.disconnect();
}
super.onPause();
}
@凌驾
受保护的void onActivityResult(最终int请求代码、最终int结果代码、最终意图数据){
开关(请求代码){
案例请求\代码\捕获\图像:
//拍完照片后打电话来。
if(resultCode==Activity.RESULT\u确定){
//将图像数据存储为位图,以便以后写入。
MbitMatoSave=(位图)data.getExtras().get(“数据”);
}
打破
案例请求\代码\创建者:
//将文件保存到驱动器后调用。
if(resultCode==RESULT\u OK){
Log.i(标记“图像已成功保存”);
mbitmatosave=null;
//只需再次启动相机,拍摄另一张照片。
startActivityForResult(新意图(MediaStore.ACTION\u IMAGE\u CAPTURE)、请求\u CODE\u CAPTURE\u IMAGE);
}
打破
}
}
@凌驾
连接失败的公共void(连接结果){
//每当API客户端连接失败时调用。
Log.i(标记“GoogleAppClient连接失败:”+result.toString());
如果(!result.hasResolution()){
//显示本地化错误对话框。
GooglePlayServicesUtil.getErrorDialog(result.getErrorCode(),this,0.show();
返回;
}
//失败有解决的办法。解决它。
//通常在应用程序尚未授权时调用,并且
//授权书
//对话框将显示给用户。
试一试{
result.startResolutionForResult(这是请求代码解析);
}捕获(发送){
Log.e(标记“启动解析活动时异常”,e);
}
}
@凌驾
未连接的公共无效(捆绑连接提示){
Log.i(标记“API客户端已连接”);
if(mbitmatosave==null){
//此活动没有自己的UI。只需启动相机。
startActivityForResult(新意图(MediaStore.ACTION\u IMAGE\u CAPTURE),
请求(编码)(捕获)(图像);;
返回;
}
saveFileToDrive();
}
@凌驾
聚氨基甲酸酯
DriveContents file2Cont(DriveContents driveContents, java.io.File file) {
OutputStream oos = driveContents.getOutputStream();
if (oos != null) try {
InputStream is = new FileInputStream(file);
byte[] buf = new byte[8192];
int c = 0;
while ((c = is.read(buf, 0, buf.length)) > 0) {
oos.write(buf, 0, c);
oos.flush();
}
} catch (Exception e) {/*handle errors*/}
finally {
try {
oos.close();
} catch (Exception ignore) { }
}
return driveContents;
}
DriveContents bytes2Cont(DriveContents driveContents, byte[] buf) {
OutputStream os = driveContents.getOutputStream();
try { os.write(buf);
} catch (IOException e) {/*handle errors*/}
finally {
try { os.close();
} catch (Exception e) {/*handle errors*/}
}
return driveContents;
}