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The source code is released under:
Apache License
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/** * Copyright 2013 Google Inc. All Rights Reserved. */*w w w .j ava 2 s . c om*/ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except * in compliance with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software distributed under the * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either * express or implied. See the License for the specific language governing permissions and * limitations under the License. */ package com.google.android.gms.drive.sample.quickstart; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.OutputStream; import android.app.Activity; import android.content.Intent; import android.content.IntentSender; import android.content.IntentSender.SendIntentException; import android.graphics.Bitmap; import android.os.Bundle; import android.provider.MediaStore; import android.util.Log; import com.google.android.gms.common.ConnectionResult; import com.google.android.gms.common.GooglePlayServicesUtil; import com.google.android.gms.common.api.GoogleApiClient; import com.google.android.gms.common.api.GoogleApiClient.ConnectionCallbacks; import com.google.android.gms.common.api.GoogleApiClient.OnConnectionFailedListener; import com.google.android.gms.common.api.ResultCallback; import com.google.android.gms.drive.Drive; import com.google.android.gms.drive.DriveApi.DriveContentsResult; import com.google.android.gms.drive.MetadataChangeSet; /** * Android Drive Quickstart activity. This activity takes a photo and saves it * in Google Drive. The user is prompted with a pre-made dialog which allows * them to choose the file location. */ public class MainActivity extends Activity implements ConnectionCallbacks, OnConnectionFailedListener { private static final String TAG = "android-drive-quickstart"; 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; /** * Create a new file and save it to Drive. */ private void saveFileToDrive() { // Start by creating a new contents, and setting a callback. Log.i(TAG, "Creating new contents."); 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 bitmapStream = new ByteArrayOutputStream(); image.compress(Bitmap.CompressFormat.PNG, 100, bitmapStream); try { outputStream.write(bitmapStream.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("image/jpeg").setTitle("Android Photo.png").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"); } }