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| 1 | +/* |
| 2 | + * Copyright 2014 Google Inc. All Rights Reserved. |
| 3 | + * |
| 4 | + * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except |
| 5 | + * in compliance with the License. You may obtain a copy of the License at |
| 6 | + * |
| 7 | + * http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | + * |
| 9 | + * Unless required by applicable law or agreed to in writing, software distributed under the |
| 10 | + * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either |
| 11 | + * express or implied. See the License for the specific language governing permissions and |
| 12 | + * limitations under the License. |
| 13 | + */ |
| 14 | +package com.google.android.gms.drive.sample.conflict; |
| 15 | + |
| 16 | +import android.app.Activity; |
| 17 | +import android.content.Intent; |
| 18 | +import android.util.Log; |
| 19 | +import android.widget.Toast; |
| 20 | + |
| 21 | +import com.google.android.gms.auth.api.signin.GoogleSignIn; |
| 22 | +import com.google.android.gms.auth.api.signin.GoogleSignInAccount; |
| 23 | +import com.google.android.gms.auth.api.signin.GoogleSignInClient; |
| 24 | +import com.google.android.gms.auth.api.signin.GoogleSignInOptions; |
| 25 | +import com.google.android.gms.drive.Drive; |
| 26 | +import com.google.android.gms.drive.DriveClient; |
| 27 | +import com.google.android.gms.drive.DriveResourceClient; |
| 28 | +import com.google.android.gms.tasks.Task; |
| 29 | + |
| 30 | +/** |
| 31 | + * An abstract activity that handles authorization and connection to the Drive |
| 32 | + * services. |
| 33 | + */ |
| 34 | +public abstract class BaseDemoActivity extends Activity { |
| 35 | + private static final String TAG = "BaseDemoActivity"; |
| 36 | + |
| 37 | + /** |
| 38 | + * Request code for auto Google Play Services error resolution. |
| 39 | + */ |
| 40 | + protected static final int REQUEST_CODE_SIGN_IN = 0; |
| 41 | + |
| 42 | + /** |
| 43 | + * Handles high-level drive functions like sync. |
| 44 | + */ |
| 45 | + private DriveClient mDriveClient; |
| 46 | + |
| 47 | + /** |
| 48 | + * Handles access to Drive resources/files. |
| 49 | + */ |
| 50 | + private DriveResourceClient mDriveResourceClient; |
| 51 | + |
| 52 | + @Override |
| 53 | + protected void onStart() { |
| 54 | + super.onStart(); |
| 55 | + signIn(); |
| 56 | + } |
| 57 | + |
| 58 | + /** |
| 59 | + * Handles resolution callbacks. |
| 60 | + */ |
| 61 | + @Override |
| 62 | + public void onActivityResult(int requestCode, int resultCode, Intent data) { |
| 63 | + super.onActivityResult(requestCode, resultCode, data); |
| 64 | + if (requestCode == REQUEST_CODE_SIGN_IN) { |
| 65 | + if (resultCode != RESULT_OK) { |
| 66 | + // Sign-in may fail or be cancelled by the user. For this sample, sign-in is |
| 67 | + // required and is fatal. For apps where sign-in is optional, handle appropriately. |
| 68 | + Log.e(TAG, "Sign-in failed."); |
| 69 | + finish(); |
| 70 | + return; |
| 71 | + } |
| 72 | + |
| 73 | + // We can use last signed in account here because we know the account has Drive scopes. |
| 74 | + initializeDriveClient(GoogleSignIn.getLastSignedInAccount(this)); |
| 75 | + } |
| 76 | + } |
| 77 | + |
| 78 | + /** |
| 79 | + * Starts the sign-in process and initializes the Drive client. |
| 80 | + */ |
| 81 | + protected void signIn() { |
| 82 | + GoogleSignInOptions signInOptions = |
| 83 | + new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN) |
| 84 | + .requestScopes(Drive.SCOPE_FILE) |
| 85 | + .requestScopes(Drive.SCOPE_APPFOLDER) |
| 86 | + .build(); |
| 87 | + GoogleSignInClient googleSignInClient = GoogleSignIn.getClient(this, signInOptions); |
| 88 | + startActivityForResult(googleSignInClient.getSignInIntent(), REQUEST_CODE_SIGN_IN); |
| 89 | + } |
| 90 | + |
| 91 | + /** |
| 92 | + * Continues the sign-in process, initializing the DriveResourceClient with the current |
| 93 | + * user's account. |
| 94 | + */ |
| 95 | + private void initializeDriveClient(GoogleSignInAccount signInAccount) { |
| 96 | + mDriveClient = Drive.getDriveClient(getApplicationContext(), signInAccount); |
| 97 | + mDriveResourceClient = Drive.getDriveResourceClient(getApplicationContext(), signInAccount); |
| 98 | + onDriveClientReady(); |
| 99 | + } |
| 100 | + |
| 101 | + /** |
| 102 | + * Shows a toast message. |
| 103 | + */ |
| 104 | + protected void showMessage(String message) { |
| 105 | + Toast.makeText(this, message, Toast.LENGTH_LONG).show(); |
| 106 | + } |
| 107 | + |
| 108 | + /** |
| 109 | + * Called after the user has signed in and the Drive client has been initialized. |
| 110 | + */ |
| 111 | + protected abstract void onDriveClientReady(); |
| 112 | + |
| 113 | + protected DriveClient getDriveClient() { |
| 114 | + return mDriveClient; |
| 115 | + } |
| 116 | + |
| 117 | + protected DriveResourceClient getDriveResourceClient() { |
| 118 | + return mDriveResourceClient; |
| 119 | + } |
| 120 | +} |
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